Principal Architect – Data Platforms / Data Lakes / Cloud / Python – 12 Month Contract – £700 p/d Inside IR35 – London

A global digital media organisation are looking for a Principal Architect to join their Data Foundation & Product Analytics team on an initial 12-month contract. This role sits at the forefront of enterprise data strategy, engineering, and platform governance — and will be instrumental in shaping the next generation of data infrastructure within the business. This is a hybrid role (London-based) with flexibility in a fast-paced, multi-cloud, multiplatform environment.

You will partner with the Enterprise Data Lake and Governance teams, architecting robust data pipelines and platforms across cloud and on-prem ecosystems, whilst establishing and enforcing standards for data modelling, ensuring consistency in data quality.

Key Responsibilities:

Architect and lead the development of large-scale, secure, and resilient data lakes and pipelines using Data Lakes and Data Mesh concepts.

Extensive experience using Python, SQL and AWS

Define and enforce data architecture across mesh and domain-driven data products.

Implement and govern real-time/batch processing (Kafka, Spark, Glue).

Ensure strong metadata, cataloguing, and lineage practices across the enterprise.

Lead teams of engineers across global hubs, mentoring and supporting high standards.

Knowledge on data governance & security practices such as IAM, RBAC, Collibra, OpenMetadata, GDPR compliance

TPBN1_UKTJ

Software Engineer - Active SC, Java, Microservices Up to £550 per day (Inside IR35) London / Remote 6 months My client is an instantly recognisable consultancy who require a strong Software Engineer with Active Security Clearance (SC) and with deep expertise in Java (Spring Boot) to join a large-scale, business-critical microservices programme. Key Requirements: Proven experience working as a Java Software Engineer on large microservice architectures Active Security Clearance (SC) Strong capability building scalable RESTful APIs and backend services in Java (Spring Boot): Postgres (or other relational SQL databases) with solid understanding of schema design and SQL Docker: Confident containerising and deploying applications Test-Driven Development (JUnit & Mockito or similar testing frameworks) CI/CD: Hands-on experience with Jenkins or similar automated pipeline tooling Flexibility working in agile teams and collaborating closely with engineers, product, and design colleagues Nice to have: API Specification using Swagger / OpenAPI Gradle build systems Liquibase (or similar) for database versioning/migrations Kafka or similar event-streaming platforms React and Typescript If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now. If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career. Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at hays.co.uk TPBN1\_UKTJ

Up to £500 per day - Inside IR35

Remote / Must be UK based

6 months

My client is an instantly recognisable consultancy who require a Release Manager with Active SC clearance for an end client within the public sector.

Key Requirements:

Proven commercial experience working as a Release Manager within the Public Sector.
Active SC Clearance.
Own and coordinate end‑to‑end release cycles for AWS‑hosted Java/Spring Boot services, ensuring readiness, dependency management, quality checks and stakeholder communication.
Oversee deployments through CI/CD pipelines (Jenkins or similar), managing environments, resolving issues, and supporting teams working with Dockerised microservices and SQL databases.
Ensure governance, risk management and adherence to change‑control processes, including validating test coverage and sign‑off criteria ahead of releases.
Drive continual improvement in release processes, collaborating with agile delivery teams and leveraging knowledge of tools like Swagger/OpenAPI, Gradle, Liquibase, Kafka, React and Typescript.
Nice to have:

Immediate availabilityHays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C’s, Privacy Policy and Disclaimers which can be found at (url removed)

Contract Software Engineer (Golang)

Location: Hybrid, 3 days per week onsite in Burgess Hill

Rate: £280 per day (Inside IR35)

Duration: 12 months

Tech: Golang, Java, Git, REST, Jenkins, NoSQL, Postgres/ql

We are hiring for a consulting tech agency partnered with a major fintech organisation. This is a strong opportunity for a Golang Software Engineer to join a large-scale fintech programme delivering customer-focused digital solutions.

We are looking for a Golang Software Engineer to work within a microservices architecture, building REST APIs and asynchronous messaging services such as Kafka or RabbitMQ. This Golang Software Engineer will operate within a Scrum framework, contributing to business-critical functions delivered through a fully automated CI/CD pipeline. The successful Golang Software Engineer will be comfortable with testing practices and modern engineering standards. This Golang Software Engineer role is ideal for someone experienced in regulated or fintech environments.

Required Skills

• Golang
• Microservices architecture
• REST and asynchronous messaging (Kafka, RabbitMQ)
• Scrum / Agile delivery
• CI/CD pipelines and automation

Desired Skills

• Degree in Computer Science, Engineering, or equivalent experience
• Test-Driven Development (TDD), BDD
• Unit, integration and regression testing
• Kafka, PostgreSQL, gRPC, Docker, GraphQL
• Jenkins, JIRA or Rally
• Git or SVN

Tech environment includes: Golang, Java, REST, Git, Jenkins, NoSQL, PostgreSQL, Kafka, Docker.

If you are a Golang Software Engineer seeking a 12-month contract in a fintech environment, apply now.

Role: Python Developer

Salary: £140,000 P/A + Bonus + Benefits

Location: London

Client: Top Fintech

My client is a well-established and successful tech house working in the finance sector who are looking for a Python Developer, with outstanding technical and communication skills to join their existing team of software engineers!

You will get the chance to work with some of the best technologists out there, hailing from a variety of the top tech houses and trading firms, to work on some of the most modern, innovative software in finance.

You will get the opportunity to build one of the most scalable and performant data platforms, not only in the finance space, but in the world. Working alongside some of the smartest people in London, you will get a true input into the end to end SDLC and get to make a genuine impact on a growing business.

Requirements:

• Strong experience with Python (2+ Years)
• Experience working with REST Microservices
• Strong SQL
• Experience working with very large data sets.
• Knowledge of big data tools (Spark, Kafka etc)
• Experience working in finance (Preferred)
• Strong formal education - ideally in Computer Science

If this sounds of interest, then please do not hesitate to apply ASAP! Interviews taking place immediately!

Founded in 2001, Resident Advisor (RA) is one of the world’s longest-running music media brands and a cornerstone of the dance, electronic and DJ ecosystem. The site’s audience of over 7 million monthly users is drawn in by a combination of news, editorial, club listings and ticketing, RA-branded events at venues and festivals worldwide, original films and a weekly mix series that has run for 20 years.

Purpose of the role:

We’re looking for a Lead Platform Engineer passionate about electronic music to join our Core Platform team. You’ll lead a small, focused team helping scale our high-traffic infrastructure that handles massive spikes during on-sale events. Our tech stack includes Node.js/.NET microservices, PostgreSQL/MSSQL databases, ElasticSearch, Redis, and Kafka running on AWS EKS (Kubernetes), managed via Terraform with CI/CD pipelines and DataDog monitoring.

Your responsibilities include improving infrastructure performance and reliability, driving modernization and cost optimization, developing shared components (i.e. auth systems, GraphQL gateways), enhancing developer experience, maintaining E2E testing systems, and creating internal tooling. This is an opportunity to solve challenging scale problems while shaping the technical foundation that powers RA’s products for the electronic music community.

Key responsibilities

• Managing and improving AWS infrastructure using infrastructure-as-code practices
• Database maintenance and query optimization
• Cloud cost optimization and resource efficiency
• Researching, planning, and leading the evolution of backend infrastructure, transitioning from reactive maintenance to a proactive, future-proof platform roadmap
• Providing functional and technical training to the broader development team, fostering a culture of shared knowledge and operational excellence
• Writing application code to support infrastructure tooling and shared platform services
• Leading, mentoring, and supporting a team of two site reliability engineers and one QA Engineer including regular 1:1s, goal setting, and performance feedback
• Owning team capacity planning and workload prioritization, ensuring the right work gets done in the right order
• Collaborating with the QA Engineer to define and uphold quality standards, integrating QA practices into the wider development team’s process
• Acting as a technical escalation point for your team and a key voice in broader platform and architecture decisions

Required Skills:

• Experience working with AWS
• Experience with Kubernetes and containerized application deployment
• Experience with infrastructure-as-code technologies (Terraform preferred)
• Experience deploying and maintaining SQL-based databases (PostgreSQL or MS SQL Server)
• Experience writing production-level application code
• Experience building and maintaining CI/CD pipelines
• Experience with git and version control workflows
• Strong documentation writing skills and commitment to knowledge sharing
• Proven experience leading or mentoring engineers in a formal or informal capacity
• Strong interpersonal skills with openness to giving and receiving feedback
• Fluent English communication skills (written and verbal)
• Experience with DataDog or similar for monitoring and alerting

Desired Skills:

• Experience with both PostgreSQL and MS SQL Server
• Advanced SQL query optimization skills
• Experience deploying and maintaining Kafka for event-driven architectures
• Experience deploying and maintaining ETL pipelines
• Deep understanding of Site Reliability Engineering principles and best practices
• Experience with backend languages such as C# and Node.js
• Experience with scripting languages (such as Bash, Python, PowerShell)
• Experience managing high-traffic systems with significant load variations
• Familiarity with QA methodologies and E2E testing frameworks, and an appreciation for how reliability and quality practices intersect

What we offer you:

• Generous annual leave policies aimed at promoting work-life balance.
• Flexibility in working arrangements, offering hybrid or remote work options based on role requirements and location.
• Matching pension schemes and/or 401k.
• Comprehensive staff wellbeing initiatives, featuring regular activities and workplace programmes to support mental and physical health. This includes discounted Classpass memberships, and custom-fitted earplugs.
• Company-led social events, team lunches, and discounts on RA merch.
• Paid annual volunteering allowance, encouraging contributions to community projects and charities you care about.
• Regular company-wide Q&As with senior leadership, along with ongoing virtual educational training sessions for all staff.
• A transparent internal company culture committed to diversity, equity, and inclusion (see:https://ra.co/about/diversity).
• Active involvement in community projects within the electronic music community (see: https://ra.co/about/community).

More about RA:

As an independent company run by devoted dance music enthusiasts, our mission is to bring together the world’s electronic music communities. Our Global Contributor Network (GCN) and international teams help us establish connections with hyper-niche local scenes.

We became B-Corp certified in 2024, which counts us among businesses leading a global movement for an inclusive, equitable, and regenerative economy and part of a community that meets high social and environmental impact standards.

We especially welcome applicants from diverse backgrounds, abilities, ethnicities, experiences, gender identities, and sexual orientations. We aim for our team to reflect the communities we engage with. We ensure everyone is valued and respected by actively promoting equality, diversity, and inclusion in our workplace.

Our values:

• Electronic music is art.
• We celebrate the progressive values that underpin electronic music.
• We advocate for a more inclusive and equitable electronic music community.
• We honour the past, present and future of electronic music.
• We use innovation to empower the community.
• We choose honesty over gain and purpose over profit.
• We’re always front left

This role is a full-time position, based in London. Please note: This position requires applicants to be based in London and to work from the office three days per week. The annual salary range for this role is £75,000 £85,000.This listing will be open for a maximum of two weeks from the 6th March.

Our Hedge Fund client is looking for a Python Developer/Engineer Contract role

This team is responsible for the firms equity transaction data platform, including trade life cycle event processing, enrichment, and PnL calculations. The role is ideal for an engineer who enjoys building robust, high-throughput services and data pipelines in a fast-paced, delivery-focused environment.

Principal Responsibilities
Design and develop solutions for trade life cycle event processing, including corporate actions, expiries, and other post-trade events.
Build and operate Python-based services that perform large-scale data transformations and calculations.
Publish and distribute transaction and PnL data using Kafka, including AVRO-based schemas and streaming patterns.

Required Skills
Minimum of 6+ years of professional Python development experience, ideally in capital markets or a fintech firm.
Experience in finance: understanding of common financial asset classes; knowledge of equities corporate action processing, trade life cycle concepts, and/or P&L calculations is a strong plus.
Experience with Kafka (or equivalent streaming/messaging platforms) and schema-based event publishing (eg, AVRO).
Strong experience performing large-scale data calculations in Python using libraries like pandas, polars, and NumPy.
Experience building REST services using frameworks such as FastAPI and/or Flask.
Strong SQL skills and experience working with relational databases in production environments.
Hands-on experience with containerized deployments and modern infrastructure tooling (Docker, Kubernetes) and familiarity with cloud platforms.
Understanding of modern SDLC practices (testing strategy, CI/CD, release management, observability, and operational ownership).

Office based, 5 days per week.
Based in London.

Contract role inside IR35

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We are looking for a strong Data Engineering Architect with 1216 years of experience in building and architecting modern data platforms on Microsoft Azure. The ideal candidate will have deep hands-on expertise in Azure Data Factory (ADF) pipeline engineering, SQL performance tuning, and end-to-end data integration architecture, along with a strong analytical mindset to troubleshoot complex data issues. You will lead solution architecture, define best practices, and mentor teams to build scalable, secure, and reliable data solutions.

Key Responsibilities

Azure Data Engineering & Architecture

• Architect and design end-to-end Azure data engineering solutions (batch + near real-time) aligned to enterprise standards.
• Define target state architecture for data ingestion, transformation, orchestration, and serving layers.
• Lead architectural decisions around scalability, resiliency, performance, security, governance, and cost optimization.

Azure Data Factory (ADF) Pipeline Engineering (Core)

• Design, develop, test, and deploy Azure Data Factory pipelines following best practices (modular design, parameterization, reusability, CI/CD readiness).

• Build robust ingestion and orchestration workflows using:

• Linked Services, Datasets, Pipelines, Triggers

• Mapping Data Flows / Wrangling Data Flows (where applicable)

• Integration Runtime strategies (Self-hosted / Azure IR)

Implement operational excellence: logging, alerting, retry patterns, failure handling, and idempotent design.

SQL Development & Optimization

• Develop and optimize SQL queries and stored procedures to support ADF pipeline operations and downstream transformations.
• Conduct query plan analysis and performance tuning (indexes, partitioning strategies, statistics, query rewrites).
• Establish SQL coding standards and reusable patterns for transformation logic.

Troubleshooting & Analytical Problem Solving

• Apply a strong analytical mindset to diagnose and resolve complex data integration issues across ingestion, transformation, orchestration, and storage layers.
• Perform root cause analysis (RCA) for pipeline failures, performance degradation, data quality issues, and environment instability.
• Design proactive monitoring dashboards and alerts for pipeline SLAs and data freshness.

Engineering Standards, DevOps & Governance

• Define and enforce best practices for:

• CI/CD for ADF (Azure DevOps / Git-based workflows)

• Infrastructure-as-Code (ARM/Bicep/Terraformpreferred)

• Version control, code review, release management

Implement data governance patterns: metadata management, lineage, auditing, encryption, RBAC, key management, PII controls.Collaborate with security/compliance teams to ensure enterprise adherence.

Leadership & Stakeholder Management

• Act as a technical leader for data engineering squads; mentor and guide engineers on design patterns and implementation.
• Translate business requirements into technical architecture and delivery plans.
• Work closely with Product Owners, Data Analysts, Data Scientists, and Platform teams to ensure alignment.

Required Skills & Qualifications

Must-Have (Strong)

• 1216 years of overall IT experience with significant data engineering & architecture exposure.

• Strong Azure Cloud Data Engineering and associated services architecture knowledge

• Deep hands-on experience with:

• Azure Data Factory (ADF) pipeline design, orchestration, integration runtime strategy

• SQL advanced querying, stored procedures, performance tuning

Strong troubleshooting skills for complex multi-system data issues.Strong understanding of data architecture concepts:

• Data lakes/lakehouse/warehouse, dimensional modeling, ELT/ETL patterns
• Batch orchestration, dependency management, SCD handling, incremental loads

Azure Ecosystem (Preferred / Good to Have)

• Azure data services experience in one or more:

• Azure Synapse Analytics / Dedicated SQL Pools

• Azure Databricks / Spark

• ADLS Gen2, Azure SQL DB, Managed Instance

• Event Hub / Kafka, Stream Analytics (if real-time involved)

Monitoring & observability:

• Azure Monitor, Log Analytics, Application Insights

Security & identity:

• Azure AD, Managed Identity, Key Vault, RBAC

Engineering Practices

• CI/CD practices for data pipelines; Git branching strategies and release governance.
• Strong documentation skills: architecture diagrams, solution designs, operational runbooks.

Behavioral / Soft Skills

• Excellent analytical thinking and structured problem-solving.
• Strong communication and stakeholder management skills.
• Ownership mindset, ability to drive standards and influence cross-team adoption.
• Proven mentoring/coaching ability.

Education

• Bachelors/Masters degree in Computer Science, Information Systems, or related field (or equivalent experience).

Nice-to-Have Certifications

• Microsoft Certified: Azure Data Engineer Associate
• Microsoft Certified: Azure Solutions Architect Expert
• DP-203 / AZ-305 (or equivalent)

Company Description Ready to join a team that's leading the way in reshaping the future of insurance? Here at esure Group, we are on a mission to revolutionise insurance for good! We’ve been providing Home and Motor Insurance since 2000, with over 2 million customers trusting us to keep them covered through our esure and Sheilas’ Wheels brands. With a bold dedication for digital innovation, we're transforming the way the industry operates and putting customers at the heart of everything we do. Having completed our recent multi-year digital transformation, we’re now leveraging advanced technology and data-driven insights alongside exceptional service, to deliver personalised experiences that meet our customers ever-changing needs today and in the future. Job Description We are currently recruiting for a QA Engineer (Automation) to join our wider Digital & Technology team at esure. You’ll play a key role in delivering high‑quality, reliable software solutions by driving automation excellence, embedding a quality‑first mindset, and supporting our ongoing digital transformation. What you’ll do: Design, develop and maintain automated test suites using Java, Selenium WebDriver and Playwright Build and execute automated and manual tests for APIs, microservices and UI journeys Create and own end‑to‑end test strategies, plans and executable BDD specifications Validate event‑driven message flows using Kafka Support continuous integration and delivery pipelines in Jenkins, ensuring high-quality releases Collaborate closely within an Agile squad to deliver reliable, scalable software Drive continuous improvement across QA processes, automation frameworks and tooling Qualifications What we’d love you to bring: Strong experience in Java and building automation frameworks Expertise in API testing (RESTful services) and service‑level automation Hands‑on experience with Selenium WebDriver, Playwright, and solid working knowledge of TypeScript Experience with GitHub (branching strategies, code reviews, PRs) Exposure to cloud environments, ideally AWS, and containerised/Kubernetes-based systems Understanding of Kafka, microservices architecture and distributed systems testing Experience working in BDD (e.g., Cucumber) and Agile/Scrum environments Strong collaboration, communication and problem‑solving skills Additional Information What’s in it for you?: Competitive salary that reflects your skills, experience and potential. Discretionary bonus scheme that recognises your hard work and contributions to esure’s success. 25 days annual leave, plus 8 flexible days and the ability to buy and sell further holiday. Our flexible benefits platform is loaded with perks to choose from, so you can build a personal toolkit to support your health, wellbeing, lifestyle, and finances. Company funded private medical insurance for qualifying colleagues. Fantastic discounts on our insurance products! 50% off for yourself and spouse/partner and 10% off for direct family members. We’ll elevate your career with hands-on training, mentoring, access to our exclusive academies, regular career conversations, and expert partner resources. Driving good in the world couldn’t be more important to us. Our colleagues can use 2 volunteering days per year to support their local communities. Join our internal networks and communities to connect, learn, and share ideas with likeminded colleagues. We’re a proud supporter of the ABI’s ‘Make Flexible Work’ campaign and welcome you to ask about the flexibility you need. Our hybrid working approach also puts you in the driving seat of how and where you do your best work. And much more; See a full overview of our benefits here

Software Engineer with key skills in either Python, Go or Typescript and experience operating data systems at scale is sought on a remote basis by a market leading Fintech. With recent investment this Software Engineer will be joining a dynamic, autonomous team of six tasked with scaling new product functionality and greenfield solutions. As such proven experience working in a product led, fast paced start or scale up would be hugely beneficial. This role would suit an experienced software engineer who relishes using the latest technology to build greenfield solutions that quickly solve business problems with the ability to understand and translate business requirements into technical solutions. This Software engineer should have most of the following key skills - Strong commercial software engineering experience - Go, Python, Typescript, node etc - Solid rational database exposure - MySQL, Postgres - A well rounded skill set in streaming systems - Kafa, Kinesis etc - Strong AWS deployment exposure - Understanding of column-oriented databases - BigQuery, ClickHouse etc - A product focussed, business first approach to engineering - Experience working in a fast paced product lead environment - Experience operating data systems at scale - Any experience working in a FinTech or regulated industry - Cloud native architecture exposure - AWS massively preferred - Solid pipeline automation skills (CI/CD) In return this Software Engineer will receive: - Base salary of up to £100,000 - Long term remote working (one day a month on site max) - Generous equity stake with a clear business exit strategy - Bonus scheme - Private healthcare - Flexible working hours - Clear progression and personal development opportunities - 25 days annual leave plus bank holidays - Private pension - Regular salary reviews So if you are a software engineer who gets excited about greenfield development and playing a key role in building high traffic, enterprise grade applications for household names then please apply now to be considered. Software Engineer Up to £100,000 Product, FinTech, Kafka, data systems, AWS, Clickhouse, CI/CD, cloud native Python, JavaScript, node, express, react, aws, serverless, cloud, cloud native, Typescript TPBN1\_UKTJ

Principle Java Engineer Salary to £70k + Company Options Scheme Hybrid working between your home, their offices (London Vauxhall) & client sites. NB: Please only apply if you are a UK National and able to achieve SC (ideally DV) clearance i.e. you have at least 5 years residency in the UK with no more than a 3 month break outside the UK. This company is a Workflow & AI Orchestration Specialist. They're on a mission to modernise how public sector organisations manage casework, derive insight from data and deliver citizen services. Theyre growing fast and looking for bright, dynamic people to help build their business. Role Theyre looking for an experienced (Principle/Team Lead) Java Engineer to join their implementation team. Youll work across Camunda BPMN/DMN process automation, API integration, and microservice orchestration helping their public-sector clients build secure, scalable, and resilient digital services. Youll collaborate with solution architects, business analysts, and designers to translate workflows into elegant, maintainable code. Youll play a key part in defining technical standards, optimising runtime performance, and mentoring less- experienced engineers in workflow-centric delivery. This is an ideal role for someone who enjoys solving complex process problems through clean code, automation, and modern engineering practices. The role involves visiting client sites; the company will cover travel expenses. Frequency is uncertain but candidates should be comfortable with that being 2-3 days per week. Client sites could be anywhere but will most likely be in & around London. Responsibilities Design, develop, and deploy Camunda-based process and decision automation solutions Implement and integrate Java-based microservices, APIs, and connectors within orchestration flows Translate BPMN and DMN models into executable workflows and reusable components Collaborate closely with analysts and service designers to refine and iterate business processes Develop and maintain automated test suites, CI/CD pipelines, and containerised deployments Optimise Camunda engine performance and monitor workflow metrics for production environments Participate in code reviews, peer testing, and technical design discussions Contribute to their internal best-practice frameworks and automation accelerators Essential Eligible (have resided in the UK for the past 5 years) and prepared to go through UK SC Security Clearance Strong experience in Java software engineering and object-oriented design Strong Spring (Boot) experience Experience with REST APIs, and microservice architectures Knowledge of Docker and Kubernetes for containerisation and orchestration Proficiency in Git, CI/CD pipelines, and automated testing frameworks Understanding of event-driven design and message brokers (e.g. Kafka, RabbitMQ) Good knowledge of security, authentication, and integration patterns for enterprise systems Experience working in agile teams within digital transformation or automation programmes A willingness to learn BPMN and Camunda tooling Some exposure to process automation or microservice orchestration Desirable Experience with Camunda 8 (Zeebe) clusters and Operate/Tasklist components Experience implementing solutions using Camunda 7 or 8 (BPMN/DMN) Familiarity with Camunda connectors, external task workers, and scripting extensions Exposure to cloud platforms (AWS, Azure, GCP) and infrastructure-as-code (Terraform, Helm) Experience integrating process automation with case-management or service-orchestration platforms Understanding of agentic AI capabilities and how they can complement workflow automation Experience mentoring developers or contributing to open-source Camunda extensions Already holding UK security clearance (SC, DV, eDV) Other Stuff NB: Please only apply if you are a UK National and able to achieve SC or DV clearance. i.e. you have at least 5 years residency in the UK with no more than a 3 month break outside the UK. NB: for non-UK Citizens; we cannot accept applications from anyone requiring sponsorship (now or in the future) for UK permanent employment status. If you are utilising a work visa this must allow you to work in the UK unrestricted for at least the next 5 years. Profile 29 recruitment keywords: Java software engineer object-oriented design OOD Camunda BPMN DMN Spring Boot REST API microservice architecture Docker Kubernetes containerisation orchestration Git CI/CD pipelines automated testing frameworks Kafka RabbitMQ Security authentication integration patterns enterprise systems agile digital transformation automation Java developer Camunda developer Zeebe Cloud AWS Azure GCP Terraform Helm process automation agentic AI artificial intelligence security clearance SC DV eDV London home based hybrid lead senior manager manage

• Gloucester location - hybrid working when possible
• Must hold active Enhanced DV Clearance (West)
• Competitive Salary DOE - 6% bonus, 25 days holiday, clearance bonus
• Experience in Data Pipelines, ETL processing, Data Integration, Apache, SQL/NoSQL, Team Leadership

Who Are We?

Our client is a trusted and growing supplier to the National Security sector, delivering mission-critical solutions that help keep the nation safe, secure, and prosperous. You’ll work with cutting-edge technologies, including AI/Data Science, Cyber, Cloud, DevOps/SRE, and Platform Engineering. They have long-term contracts secured across the latest customer framework and are set for significant growth.

What will the Lead Data Engineer be Doing?

You will develop mission-critical data solutions for National Security clients, working with cutting-edge technologies such as AI/DS, Cyber, Cloud, DevOps/SRE, and Platform Engineering. You’ll collaborate directly with customers across National Security, Defence, and Intelligence to solve complex, high-stakes challenges. The role involves designing and implementing sophisticated data pipelines to connect operational systems with analytics and business intelligence platforms.

Responsibilities include:

• Design, build, and maintain data pipelines, including ingestion, orchestration, and enrichment
• Develop data-streaming and ETL solutions (e.g. NiFi)
• Model databases and integrate data from diverse sources
• Ensure data quality, consistency, and security
• Monitor and optimise system performance
• Write clean, secure, reusable, test-driven code
• Apply systems integration expertise within agile teams
• Decompose user needs into epics and stories
• Promote reuse of data flows and best practices across teams
• Champion data engineering standards across government

The Lead Data Engineer Should Have:

• Active eDV clearance (West)
• Willingness to work full-time on-site in Gloucester when required.

Required experience in the following:

• Apache Kafka
• Apache NiFI
• SQL and NoSQL databases (e.g. MongoDB)
• ETL processing languages such as Groovy, Python or Java
• Understand and interpret technical and business stakeholder needs
• Manage expectations through clear, proactive communication
• Lead and support challenging conversations with teams and senior stakeholders

To be Considered:

Please either apply by clicking online or emailing me directly to . For further information please call me on / - I can make myself available outside of normal working hours to suit from 7am until 10pm. If unavailable, please leave a message and either myself or one of my colleagues will respond. By applying for this role, you give express consent for us to process & submit (subject to required skills) your application to our client in conjunction with this vacancy only. Also feel free to follow me on or connect with me on LinkedIn, just search Henry Clay-Davies (searchability). I look forward to hearing from you.

KEY SKILLS:

DATA ENGINEER / DATA ENGINEERING / DEFENCE / NATIONAL SECURITY / DATA STRATEGY / DATA PIPELINES / DATA GOVERNANCE / SQL / NOSQL / APACHE / NIFI / KAFKA / ETL / GLOUCESTER / DV / SECURITY CLEARED / DV CLEARANCE

Our client is the leader in their field and with pipeline opportunities that would enable them to double their revenue by the end of 2028. To support this, they are in the early stages of a bold digital transformation to improve operational processes and procedures and to modernise systems and practices so that they can deliver quality at pace.

Currently the team are transitioning from traditional software application development using C#, Blazer and SQL Server integrating with Dynamics Business Central, and the Data team provide analytics and insights using SAS, MicroStrategy and Power BI.

The new model is to continue with a .NET tech stack, but the team will build and run so developing applications and deploying with DevSecOps. The Data team will also deploy solutions and will move to Fabric, Databricks or Snowflake.

With a Data Architect now in place, the focus is to recruit a Technical Lead to lead the software engineering function.

This role will formerly move towards a Head of Engineering & Platform position but will remain hands on. This is leading by doing and mentoring so you will still be building full stack C# applications and deploying with DevOps but leading others too. There are 7 Software Engineers, an Automation Tester, Scrum Master, DevOps, Infra Engineers and Service Desk Team.

You need to have experience of leading end to end software development including design, build, testing, deployment and support. The Service Desk team need to work closely with the build and deployment resources so that they can support products more effectively.

Key areas of responsibility:

Define and execute the engineering strategy across Azure cloud, integration, and legacy modernisation, aligned to the clients long-term digital roadmap.

Design and deliver cloud-native solutions that scale efficiently, perform reliably, and integrate seamlessly across business functions.

Lead by example in Azure DevSecOps: create and manage pipelines (YAML), infrastructure-as-code (Bicep, Terraform), and container orchestration (AKS, Docker).

Embed engineering best practice: implement CI/CD, code quality gates, automated testing, and observability from build to production.

Guide platform evolution: re-engineer legacy .NET and SQL systems into modular, API-driven architectures.

Build and empower teams: mentor full-stack, DevOps, and Automation Test engineers fostering autonomy, innovation, and accountability.

Champion security and reliability by design: integrate compliance, performance, and monitoring into every stage of delivery.

Collaborate widely: partner with Product, Data, and Infrastructure teams to ensure alignment between technology capability and commercial goals.

Drive innovation: pilot emerging technologies (AI, automation, data services) that improve efficiency and insight.

Tech Stack seeking:

Full Stack Developer; Design and Build with C#, JavaScript Library (React.js bonus), API Development, SQL Server/Backend Development including ETL/Integration

Azure DevOps (Repos, Pipelines, Boards, Artifacts, Test Plans),

CI/CD automation, gated releases, and environment governance

Infrastructure-as-Code (Bicep, ARM, Terraform)

Containerisation (Docker, AKS) and serverless (Azure Functions)

Monitoring and observability (Application Insights, Log Analytics)

Secrets management and vulnerability scanning (Key Vault, SonarQube, OWASP)

Microservices and event-driven design (Service Bus, Event Grid, Kafka)

Domain-Driven Design (DDD) principles

Overall experience:

8+ years in software engineering, with deep full-stack and cloud experience.

Proven record of leading end to end engineering teams through modernisation or platform rebuilds (Design, build, test, deploy, support)

Azure DevOps and enterprise-scale CI/CD. (DevSecOps a bonus)

Excellent architectural judgement; balancing delivery speed, stability, and cost efficiency. Good understanding of SOLID principles

Strong communication and leadership presence able to influence peers and executives alike. This role needs high energy and to take the team on a journey

A continuous learner, passionate about automation, clean code, and scalable design.

This is an exciting time to join a digital transformation in the early stages to lead and influence their transition to modern practices and systems to help them scale and grow at pace.

The role will ideally be Peterborough 2 days a week and 3 days remote. However this can also be based out of London (City) but with Peterborough for 2 days per month for 4 months then London 1 day a week and Peterborough 1 day some weeks. Travel from London + overnight stays in Peterborough will be paid.

TPBN1_UKTJ

Senior Software Engineer Salary: £75k-£110k (plus attractive bonus on top) Location: London or Leeds (relaxed about hybrid or remote working, if preferred) My client is a specialist provider of sports pricing and trading technology, developing advanced simulation-based models and risk tools that underpin the performance of major sports brands.

Role Overview Were looking for a Senior Software Engineer to join the Modelling & Data Engineering group at a rapidly expanding sports-technology business. This is a hands-on role in a fast-moving environment where youll help shape new modelling tools, improve existing systems, and contribute to the technical foundations that support the companys growth.

What youll be working on Developing high-quality, maintainable software using .NET technologies.

Taking ownership of greenfield initiatives, designing and building internal tools that support the companys modelling capabilities.

Helping to gather, process and structure the data that powers the modelling pipeline.

Introducing new technologies, improving architectural patterns and reducing technical debt to enhance performance and maintainability.

Collaborating closely with colleagues across the Modelling & Data Engineering function to manage the full lifecycle of internal tooling.

Qualifications Essential A degree in a STEM discipline (Computer Science preferred), or equivalent demonstrable programming ability.

Certifications or training aligned with the companys core tech stack (e.g., .NET, AWS).

Strong programming fundamentals, including data structures, performance-focused development, design patterns and SOLID principles.

Commercial experience working with .NET (ideally .NET 5+).

Good SQL knowledge and at least one year working with relational databases.

Experience with distributed streaming platforms such as Kafka.

Familiarity with in-memory storage solutions like Redis.

Hands-on experience with AWS services such as S3, Athena, ECS, CloudFormation, Lambda and CloudWatch.

Confident using Git in a multi-developer environment.

Background in systems integration, including APIs, networking and data migration.

A commitment to producing clean, well-documented, reproducible systems.

Strong communication, organisation and time-management skills, with the ability to work independently or as part of a team.

Analytical mindset and strong problem-solving ability.

Desirable Interest in US sports (NFL, NBA, MLB, NHL, NCAAB, NCAAF), Cricket, Tennis or Football.

Experience collaborating with Data Scientists or Data Engineers.

Comfort with mathematical concepts such as probability, statistics and matrix operations.

Additional notes While experience with C# is preferred, candidates with a strong Java background and relevant industry exposure - or a clear personal interest in betting, gaming or US sports - will also be considered.

TPBN1_UKTJ

Software Engineer with key skills in either Python, Go or Typescript and experience operating data systems at scale is sought on a remote basis by a market leading Fintech.

With recent investment this Software Engineer will be joining a dynamic, autonomous team of six tasked with scaling new product functionality and greenfield solutions. As such proven experience working in a product led, fast paced start or scale up would be hugely beneficial.

This role would suit an experienced software engineer who relishes using the latest technology to build greenfield solutions that quickly solve business problems with the ability to understand and translate business requirements into technical solutions.

This Software engineer should have most of the following key skills

• Strong commercial software engineering experience - Go, Python, Typescript, node etc
• Solid rational database exposure - MySQL, Postgres
• A well rounded skill set in streaming systems - Kafa, Kinesis etc
• Strong AWS deployment exposure
• Understanding of column-oriented databases - BigQuery, ClickHouse etc
• A product focussed, business first approach to engineering
• Experience working in a fast paced product lead environment
• Experience operating data systems at scale
• Any experience working in a FinTech or regulated industry
• Cloud native architecture exposure - AWS massively preferred
• Solid pipeline automation skills (CI/CD)

In return this Software Engineer will receive:

• Base salary of up to £100,000
• Long term remote working (one day a month on site max)
• Generous equity stake with a clear business exit strategy
• Bonus scheme
• Private healthcare
• Flexible working hours
• Clear progression and personal development opportunities
• 25 days annual leave plus bank holidays
• Private pension
• Regular salary reviews

So if you are a software engineer who gets excited about greenfield development and playing a key role in building high traffic, enterprise grade applications for household names then please apply now to be considered.

Software Engineer
Up to £100,000
Product, FinTech, Kafka, data systems, AWS, Clickhouse, CI/CD, cloud native
Python, JavaScript, node, express, react, aws, serverless, cloud, cloud native, Typescript

Key Responsibilities

• Participate in the growth, industrialization, and DevOps of the Airops Fast Data platform.* Develop event-driven data interfaces between Airops products, the data platform, and third-party applications or middleware, within an MS Azure environment.* Work within a DevOps team and participate in the maintenance of the Azure platform.* Utilize tools like Jenkins, ArgoCD, and Helm charts for continuous integration and continuous deployment (CI/CD) processes.* Work with Kubernetes and OpenShift for container orchestration and management.* Develop and maintain event streaming solutions using Kafka and Azure Event Hub.

Ideal Candidate Profile

• Java Development: Previous experience as a Java developer, with expertise in Java Quarkus or Java Spring Boot (Java version 21).* Cloud Native: Experience developing in a cloud environment (MS Azure or AWS).* Event Streaming: Experience with event streaming infrastructure (e.g., Kafka, Azure Event Hub).* DevOps: Experience with DevOps infrastructure and components, including Jenkins, ArgoCD, and Helm charts.* Containerization: Proficiency in containerization and orchestration tools such as Kubernetes and OpenShift.* Software Maintenance: Experience in software maintenance, including incident resolution, root cause analysis, and post-mortem analysis.* Agile Methodologies: Experience working in Agile environments (Scrum, SAFe).

We have a current opportunity for a Rust Engineer on a permanent basis. The position will be based in London. For further information about this position please apply.

you will build the infrastructure that sits between our traders and the market - execution paths, data pipelines, and observability tooling that power trillions in annual notional volume. When a system performs at 3am under peak load, you will be one of the reasons why. This is a rare opportunity to apply Rust in a domain where performance directly changes outcomes, and where your engineering decisions carry real commercial weight.

Requirements

• 5-10 years software engineering; 3+ years production Rust - ownership, lifetimes, and async model are instincts, not references
• Tokio and the broader async Rust ecosystem; concurrent, lock-free, and wait-free data structures in live systems
• Low-latency system design; hot path optimisation, benchmarking, and hardware-level profiling - cache topology, NUMA effects, allocator behaviour
• Custom allocator design, unsafe code review, and rigorous reasoning about memory safety at system boundaries
• High-performance network programming: TCP/UDP, zero-copy I/O, kernel bypass awareness (DPDK, io_uring)
• Distributed messaging and event streaming: Kafka, NATS, or equivalent; ordering guarantees, exactly-once semantics, consumer group management
• Production observability: metrics (Prometheus/OpenTelemetry), distributed tracing, structured logging, and alert design
• CI/CD pipeline design including benchmarking gates, automated performance regression detection, and reproducible builds
• TDD as a design discipline - property-based testing, integration tests, chaos and fault injection experience
• Ability to lead architecture design reviews, author ADRs, and elevate Rust engineering standards across a team
• Cloud infrastructure - Azure preferred, AWS considered; IAM, managed services, automated and auditable deployment pipelines, secrets management

Nice to Have

• Front office trading environment (any asset class) - execution systems, market data infrastructure, or low-latency pricing engines
• FIX protocol, OMS/EMS connectivity, or direct exchange co-location experience
• SIMD, vectorisation, or GPU offloading for numerical workloads; eBPF for observability or network instrumentation
• Open-source Rust contributions, published crates, or ring-buffer/LMAX Disruptor pattern experience

What We’re Looking For

You find the bottleneck before anyone reports it, understand it at the hardware level, and instrument the fix so the next problem surfaces in seconds. You write Rust other engineers learn from and care deeply.

To find out more about Huxley, please visit (url removed)

Huxley, a trading division of SThree Partnership LLP is acting as an Employment Business in relation to this vacancy Registered office 8 Bishopsgate, London, EC2N 4BQ, United Kingdom Partnership Number OC(phone number removed) England and Wales

Software Engineer - Active SC, Java, Microservices Up to £550 per day (Inside IR35) London / Remote 6 months My client is an instantly recognisable consultancy who require a strong Software Engineer with Active Security Clearance (SC) and with deep expertise in Java (Spring Boot) to join a large-scale, business‑critical microservices programme. Key Requirements: Proven experience working as a Java Software Engineer on large microservice architectures Active Security Clearance (SC) Strong capability building scalable RESTful APIs and backend services in Java (Spring Boot): Postgres (or other relational SQL databases) with solid understanding of schema design and SQL Docker: Confident containerising and deploying applications Test‑Driven Development (JUnit & Mockito or similar testing frameworks) CI/CD: Hands‑on experience with Jenkins or similar automated pipeline tooling Flexibility working in agile teams and collaborating closely with engineers, product, and design colleagues Nice to have: API Specification using Swagger / OpenAPI Gradle build systems Liquibase (or similar) for database versioning/migrations Kafka or similar event‑streaming platforms React and Typescript If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now. If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career. Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at (url removed)

Location: 3 days on site in either Sheffield/Birmingham/London
Duration: 30/11/2026
Rate 529

MUST BE PAYE THROUGH UMBRELLA
"Key Responsibilities

• Design, deploy, and operate Splunk Enterprise and ITSI for hybrid Kubernetes/OpenShift environments.
• Onboard data at scale (HEC, Universal Forwarder/Deployment Server), align to CIM, and enforce RBAC, retention, and cost guardrails.
• Build ITSI service decompositions, KPIs/multi-KPI thresholds, NEAP policies, glass tables, deep dives, and service health scoring.
• Create OpenShift-focused exec/ops views: cluster health (API/etcd), node readiness/pressure, pod restart hotspots, network/storage errors, capacity and quota/bursting visibility.
• Tune search and platform performance: workload rules, concurrency, DMA, summary indexing, and scheduling hygiene.
• Implement alerting, enrichment, routing to ITSM/ChatOps, suppression windows, maintenance schedules, and runbook automation.
• Govern ingest and security: allow/deny lists, PII handling, TLS, token governance, index/role mapping, and data quality SLAs.
• Integrate upstream sources and pipelines: OpenTelemetry, Prometheus exporters, Fluentd/Fluent Bit/Vector, Kafka, CMDB/ITSM enrichments, AIOps/ML anomaly detection.

Required Skills

• • Splunk Enterprise: SPL mastery, CIM alignment, KV/lookups/macros, saved searches, index/retention/RBAC design, search performance tuning.
  • Splunk ITSI: Service trees, KPIs, adaptive/time-based thresholds, NEAP tuning, glass tables, deep dives, Service Analyzer configuration.
  • OpenShift/Kubernetes observability: Cluster/control-plane metrics, kube events/logs, workload/node/network/storage correlation, capacity and noisy-neighbor detection.
  • Data pipelines & collectors: OpenTelemetry (OTLP), Prometheus scraping, Fluentd/Fluent Bit/Vector, Kafka (TLS), HEC/UF/DS onboarding.
  • Reliability & SLOs: Golden signals, rollout/rollback health checks, SLO/KPI mapping to namespaces/apps, executive and ops dashboards.
  • Performance & cost optimization: Workload rules, DMA, summary indexing, schedule optimization, license/cost guardrails.
  • Security & compliance: TLS/mTLS, token and cert hygiene, PII controls, auditability, role/index mappings.
  • Automation & integrations: ITSM/ChatOps routing, runbooks, CMDB enrichment, webhook/AIOps integrations."

We’re looking for a Splunk & OpenShift Observability Engineer to design, deploy, and optimise enterprise-grade monitoring across hybrid Kubernetes and OpenShift environments.

This is a high-impact role where you’ll shape observability strategy, enhance service intelligence, and ensure platform reliability at scale - balancing performance, cost efficiency, and security governance.

You’ll work at the intersection of platform engineering, observability, and service intelligence, helping to transform raw telemetry into actionable insight. This is an opportunity to influence reliability strategy, improve operational maturity, and deliver measurable value across a modern cloud-native estate.

What You’ll Be Doing

• Design, deploy, and operate Splunk Enterprise and ITSI across hybrid Kubernetes/OpenShift platforms
• Onboard and normalise data at scale (HEC, Universal Forwarder, Deployment Server), aligning to CIM standards
• Build and optimise ITSI service models: service trees, KPIs, adaptive thresholds, NEAP policies, glass tables, deep dives, and health scoring
• Deliver OpenShift-focused executive and operational dashboards, including:
• Cluster/API/etcd health
• Node readiness and resource pressure
• Pod restart trends and noisy-neighbour detection
• Network and storage error visibility
• Capacity, quota, and burst analysis
• Optimise search and platform performance (workload rules, DMA, summary indexing, scheduling hygiene, concurrency tuning)
• Implement intelligent alerting and automated routing into ITSM and ChatOps platforms, including enrichment, suppression windows, and maintenance scheduling
• Govern data ingestion and security controls (RBAC, retention, PII handling, TLS, token governance, index and role mapping)
• Integrate telemetry pipelines including OpenTelemetry, Prometheus, Fluentd/Fluent Bit/Vector, Kafka, CMDB and AIOps/ML solutions
• Drive SLO/KPI alignment, golden signal monitoring, rollout/rollback health validation, and executive reporting

What You’ll Bring

• Deep expertise in Splunk Enterprise (SPL mastery, CIM alignment, saved searches, macros, KV stores, index/retention/RBAC design, performance tuning)
• Strong experience with Splunk ITSI (service trees, KPIs, adaptive/time-based thresholds, NEAP tuning, Service Analyzer configuration)
• Proven OpenShift/Kubernetes observability experience across control-plane metrics, events, logs, workload correlation, and capacity management
• Hands-on experience with telemetry pipelines (OpenTelemetry/OTLP, Prometheus exporters, Fluentd/Fluent Bit/Vector, Kafka with TLS, HEC/UF/DS onboarding)
• Strong understanding of reliability engineering principles (golden signals, SLO design, namespace/application KPI mapping)
• Experience optimising performance and licensing costs using workload rules, DMA, and summary indexing
• Solid security and compliance knowledge (TLS/mTLS, certificate/token hygiene, PII controls, auditability, role/index mapping)
• Automation and integration expertise across ITSM, ChatOps, webhooks, CMDB enrichment, and AIOps tooling

Software Engineer (Backend) Hybrid/Romsey Up to £65,000 per annum (DOE) + Generous Benefits package iO Associates has partnered with a R&D client specialising In Defence, and National Security, who is looking for a Backend Software Engineer to build high-speed, mission-critical systems for our National Security. You'll design, develop, test, and deploy modern backend services that connect physical and digital systems, working with Go, Kubernetes, and cloud‑native tooling to deliver reliable analytics pipelines. What they're looking for: Building high‑performance backend services in Go. Shipping containerised apps to Kubernetes with Helm and ArgoCD. Turning concepts into robust technical designs. Shaping work in an Agile team through epics, stories, and sprint rituals. Creating clear, concise technical documentation. Monitoring live systems and fixing issues before they become problems.Skillset required: Strong experience with Go or Python. Solid DevOps grounding: Docker, ArgoCD, GitLab CI. Real‑world Kubernetes deployment experience with Helm. A modern engineering mindset and familiarity with Agile delivery.Additional skillset that was would advantageous for the role: Redis Robot Framework Prometheus / Thanos / Grafana NATS, Qpid, Kafka Linux networking AWSDue to the nature of the work, the client requires you to be eligible to obtain a Security Clearance, with the view of obtaining DV in the future. If this role is of interest, apply to the link for consideration