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Overview
Looking for top Backend Engineer jobs? Discover the latest backend developer opportunities on Haystack, your go-to IT job board. Whether you specialize in Java, Python, Node.js, or Ruby, find the perfect backend engineering role to advance your tech career today. Start browsing backend developer jobs now!
Staff Engineer (Oracle MOM)
TJX Europe
London
In office
Senior - Leader
Private salary
RECENTLY POSTED

TJX Companies

At TJX Companies, every day brings new opportunities for growth, exploration, and achievement. You’ll be part of our vibrant team that embraces diversity, fosters collaboration, and prioritizes your development. Whether you’re working in our four global Home Offices, Distribution Centres or Retail Stores-TJ Maxx, Marshalls, Homegoods, Homesense, Sierra, Winners, and TK Maxx, you’ll find abundant opportunities to learn, thrive, and make an impact. Come join our TJX family-a Fortune 100 company and the world’s leading off-price retailer.

Job Description:
Staff Engineer (Oracle MOM)

Who we are
The Oracle Retail Solution Delivery team develops the software and systems that support TJX’s core financial Oracle MOM suite applications including Stock Ledger, Sales Audit and Markdowns. This role leverages your experience with Oracle Technologies to deliver our scalable global applications. Our team is looking for people with a passion for technology, intellectual curiosity, and a willingness to try new things that drive better solutions and help the MOM ART achieve high-value results for our customers. We want creative people that are familiar with the challenges of working within a large organization with many stakeholders as well as the hands-on challenges of designing, developing, and
deploying software using Oracle technologies. A strong background of technical and functional achievements with the MOM suite with a commensurate detailed knowledge of the strengths/weaknesses of the on-prom suite is expected. A solid awareness of the ORACLE SaaS Merchandise Foundation, Price Hub & Sales Audit offerings a plus.

Responsibilities include;
Providing analysis to both technical and non-technical audiences.

Presentation skills with a high degree of comfort with both large and small audiences

Demonstrate a substantial Oracle Retail, Retail domain design level of knowledge (SaaS & ONPREM)

Demonstrated expertise in designing and implementing Oracle retail modules

(ONPREM/SaaS) customizations within MFCS

Demonstrate Expertise working on a wide range of Integration patterns

Ability to define effective Architectural and Design guard rails that drive efficient design and development processes

Demonstrated hands-on success;
in programming using: Java, Pro C and PL/SQL

in scripting languages using: JavaScript and shell script

in database query language such as: Oracle - performance, EXA, etc.

9 + years of experience as an Engineer in a Retail domain or related occupation

Experience must include experience in agile software development

Demonstrated technical thought leadership in customer facing situations

Experience with industry standards for enterprise integration patterns
Benefits include Associate discount; 401(k) match; medical/dental/vision; HSA; health care FSA; life insurance; short/long-term disability; paid holidays/vacation /sick/bereavement/parental leave; EAP; incentive programs for management; auto/home insurance discounts; tuition reimbursement; scholarship program; adoption/surrogacy assistance; smoking cessation; child care/cell phone discounts; pet/legal insurance; credit union; referral bonuses. All benefits are subject to applicable plan or program terms (including eligibility terms) and may change from time to time. Contact your TJX representative for more information.

In addition to our open door policy and supportive work environment, we also strive to provide a competitive salary and benefits package. TJX considers all applicants for employment without regard to race, color, religion, gender, sexual orientation, national origin, age, disability, gender identity and expression, marital or military status, or based on any individual’s status in any group or class protected by applicable federal, state, or local law. TJX also provides reasonable accommodations to qualified individuals with disabilities in accordance with the Americans with Disabilities Act and applicable state and local law.

Address:
300 Value Way

Location:
USA Home Office Marlborough MA 300 Value Way

This position has a starting salary range of $(phone number removed) to $(phone number removed) per year. Actual starting pay is determined by a number of factors, including relevant skills, qualifications, and experience. This position is eligible for an annual incentive as well as long-term incentives

Senior Software Engineer - Java
Focus 5 Recruitment Ltd
Warrington
Hybrid
Senior
£65,000 - £75,000
RECENTLY POSTED
+7

Focus 5 Recruitment are working with an exciting software business who have just been awarded 2 large contracts with international Mobile Network Operators. Appointed to help them source a suitable Senior Full Stack Software Engineer, we’re looking for candidates who have experience of producing efficient code to enable the smooth and efficient running of both internal and client facing systems.

This is a hybrid role but requires 3 days a week in their Warrington office. You therefore need to live local to Warrington.

This is an amazing opportunity to work with a growing and ambitious software business who have contracts with some of the world’s leading mobile network companies. They are looking for candidates who can come in at a key point in their growth and develop their career as they grow. The Software Engineers will work as part of a team responsible for the complete development lifecycle.

Experience required for Full Stack Software Engineer: -

* 5+ years of full stack development experience

* Strong Java

* unit testing (with a side of TDD), Maven, Git and a sense of humor.

* Kubernetes & Docker

* Working in a team development environment

* Thorough understanding of Computer Science fundamentals such as Data Structures, Algorithms and Design Patterns

* Amazon Web Services, Azure, or Google Cloud Platform

Desirable

* Kafka

* Agile awareness,

* Jira,

* Bitbucket

* Python

* PostgreSQL + Timescale

* Build Systems (Bamboo, Jenkins, etc)

* SQL and NoSQL technologies

You will have knowledge of software development and some exposure to mentoring junior Engineers would be a benefit. You will be happy solving technical problems for customers even if this means working with new technologies.

They have a vast array of already built products so candidates will have a lot of working product source code to help get started. Technical help also be provided on how their current products work. There is opportunity here to work with embedded software developers and the CTO on overall product. Client and Server are always developed collaboratively so there is an opportunity to contribute to overall product architecture.

You can expect interesting work, a very supportive organisation and team and many opportunities for on-going technical and personal development.

This Senior Full Stack Software Engineer role is now live with a key client. For full details and immediate consideration, please submit an application ASAP

Software Developer
HAYS
Glasgow
Hybrid
Junior - Mid
£60,000
RECENTLY POSTED

Your new company:
You will be joining a leading professional services organisation that operates across the UK & Ireland in order to improve standards, increase knowledge and ultimately help protect members and the wider industry.

With a Glasgow city centre HQ, they employ almost 200 staff across a range of business units including an Information Services team.

They have invested significantly in modern business applications in order to improve services and efficiency.
They currently have an immediate requirement for a Software Developer to join the team of 7. This role will be a 12 month fixed term contract.

Your new role:

You will join a well-established team of 7 responsible for the support and development of existing business applications.
You will help design and develop suitable integrations for any new solutions.
You will working closely with other teams in order to clarify any business requirements and help shape solutions.

You will work across a variety of development environments including Power Platform,
.NET, O365, Dynamics and SharePoint.

This role offers lots of flexibility in terms of where you work.
You will be expected to come to the Glasgow city centre office on average once a week, but this is not a specific day and will be for relevant team collaboration meetings.

What you need to do now
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 on 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

Junior Software Engineer - FinTech
client server
Newcastle upon Tyne
In office
Junior
£55,000
RECENTLY POSTED

Junior Software Engineer / Developer *Newcastle onsite* to £55k+

Are you a bright, ambitious Software Engineer with a first class education looking for an opportunity to progress your career, working on complex and interesting systems in a role where you can learn and develop your skills?

You could be joining a scaling Technology Consultancy, the company has already experienced huge success within the FinTech / finance space as is expanding as a result.

As a Junior Software Engineer you will collaborate with a small, talented team to deliver client projects within a Microsoft environment using the latest versions of C# .Net to produce high quality code. You’ll be collaborating to solve clients’ real-world problems using technology across a broad range of systems and applications within modern engineering environments.

Location / WFH:

You’ll join colleagues in brand new Central Newcastle offices on a full-time basis (Monday to Friday), working hours 0900-1800 with some flexibility. The offices are well equipped and offer fantastic views across the City and the local countryside, many employees walk or cycle in (onsite showers available!).

About you:

You have achieved a minimum 2.1 BSc in Computer Science or similar technical discipline from a top tier / Russel Group university, backed by A’s at A-level

You’re a technologist who enjoys collaborating and problem solving, working on complex, distributed systems

You have strong backend coding skills - you can come from any tech background (e.g. Java, Python, Full Stack) but be happy to use C# .Net going forward and pick up new things along the way

You have experience with public cloud technologies - Azure, AWS, GCP

You have a good knowledge of modern software engineering best practices and have experience across the full software development lifecycle

You have a thorough understanding of Computer Science fundamentals such as OOP, Data Structures, Design Patterns, Algorithms

You’re excited to join a start-up in a role that you can shape and influence

What’s in it for you:

As a Junior Software Engineer you will earn a competitive package:

Salary to £55k

Bonus

25 days holiday

Bupa healthcare

Generous pension contribution

Continuous career development opportunities

Social team atmosphere with a range of events and early finish for drinks on Fridays

Apply now to find out more about this Junior Software Engineer / Developer opportunity.

At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We’re an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

TPBN1_UKTJ

Software Developer - IDMS - Tax - Contract - 6 months
CBSbutler Holdings Limited trading as CBSbutler
Telford
Hybrid
Mid - Senior
£390/day - £408/day
RECENTLY POSTED

Software Developer - IDMS - Tax - Contract
Telford - 2 days per month onsite
6-month Contract
SC Clearance is required for this role

Hiring for an experienced Software Developer / Engineer to join the Tax Admin team, supporting critical enterprise tax systems. This role requires strong technical expertise across legacy and client-server technologies, with a focus on stability, enhancement, and continuous improvement of live services.

Responsibilities include:
Design, develop and maintain PL/SQL and CA Gen applications
Support deployment activities and Implementation Management
Manage clone activities including restores, robotics coordination, testing, and
patch upgrades
Troubleshoot performance issues and provide technical support
Collaborate across incident, problem, and continuous improvement forums
Participate in code reviews and promote engineering best practice
Drive batch performance improvements and reduce failure rates
Support audit and Disaster Recovery requirements
Provide occasional out-of-hours support for batch failures and live releases

Skills & Experience
Strong experience with CA Gen, Tuxedo, Oracle, PL/SQL, and Unix
Experience supporting large-scale enterprise applications
Ability to work collaboratively across technical and stakeholder teams
Strong problem-solving and communication skills

Please apply for immediate interview!

CBSbutler is operating and advertising as an Employment Agency for permanent positions and as an Employment Business for interim / contract / temporary positions. CBSbutler is an Equal Opportunities employer and we encourage applicants from all backgrounds.

C# Software Engineer X 3
Adria Solutions Ltd
Manchester
In office
Mid - Senior
£40,000 - £60,000
RECENTLY POSTED

C# Software Engineer X 3 Manchester

As a C# Software Engineer, you’ll design and deliver high-quality, scalable solutions across our clients platform. You’ll take ownership of key features, contribute to architectural decisions, and support a culture of technical excellence.

What You’ll Do

Develop, enhance, and support high-performing, scalable solutions built in C#

Partner closely with Product and fellow engineers to turn business needs into effective technical implementations

Play an active role in shaping system design and influencing the future technical roadmap

Promote high standards across development, including clean code, thorough testing, and clear documentation

Conduct peer reviews, troubleshoot complex issues, and proactively address legacy or inefficient code

Provide guidance and knowledge-sharing to help other engineers grow and succeed

Skills and Experience:

3 years+ commercial experience in software development

Solid hands-on expertise with C# and TypeScript, applying modern engineering standards and practices

Demonstrated track record of building and deploying reliable, scalable systems in live environments

Familiarity with automated build, deployment, and release processes within a CI/CD setup

Analytical mindset with the ability to solve complex problems and communicate solutions clearly

Thrives in a fast-moving, agile team where collaboration and shared ownership are key

Benefits

Private medical & dental insurance

Life assurance

Employee discounts

Regular team events

Interested? Please Apply Now!

We are an equal opportunity employer and value diversity.

C# Software Engineer X 3 Manchester

C# / C++ Software Engineer
Certain Advantage
Multiple locations
Hybrid
Junior - Mid
£65/hour
RECENTLY POSTED
+1

World Class Defence Organisation is currently looking to recruit 5x C# / C++ Software Engineer subcontractors on an initial 12 month contract.

Desktop C# is the expertise the department are looking for; with some experience with C++ but doesn’t need to be overly extensive.

Job Title: C# / C++ Software Engineer
Rate: £65.00 per hour
Overtime Rate: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’
Location: Stevenage or Bristol (depending on your preference)
Hybrid / Remote working: The role will be a hybrid role of 3 or 4 days per week onsite
Contract: 37 Hours per week
Duration: 12 Months (initially and then ongoing and long-term thereafter)
IR35 status: Inside IR35 (Umbrella)

C# / C++ Software Engineer Job Description:

WSSE are integral in the development of weapon systems and system architectures, and as a result we have developed a capability supporting developments across the full product life cycle.

The team integrate real products, models and synthetic environments to provide visualisations, demonstrations, verification & validation as well as training capability and support.

The role support the development of the worlds most advanced defence systems from the initial concept all the way through to in service support and training, using a range of simulation technologies, including digital twins and emulators.
Working with Project Leads and Simulation Architects to design and develop simulation components as an end to end representation of a weapon System in a synthetic environment using C#, C++ and integration simulations, supporting a number of industry standards.
You will work as part of a heterogeneous agile development team, made up of mixed discipline engineers working in synergy to develop simulations and representations of real equipment.
Our approach to software development includes
Configuration control
Continuous Integration
Continuous Delivery or Deployment.
Unit testing and test driven development.
Skillset / experience required:

Proficient in C#
C++ experience would be great
Microsoft Visual Studio, Eclipse,
Ability to work from high level/system view into technical detail.
Knowledge of using Microsoft Windows and Linux operating systems
Non-essential:

Distributed simulation standards / Protocols (DIS, HLA, DDS) and web services development (JavaScript, Node JS or similar) Military Communications,
Datalinks and Interfaces such as 1553/1760 and Ethernet TCP/IP
Practical knowledge of System integration principles and processes

Senior Software Engineer
HOLT EXECUTIVE
Bournemouth
Hybrid
Senior
Private salary
RECENTLY POSTED
+1

Join a cutting-edge engineering team developing autonomous systems for the next generation of marine and defence technology. This is a fantastic opportunity for an experienced Software Engineer to take a leading role in designing, developing, and delivering advanced software solutions that operate in challenging real-world environments. You’ll work across the full software lifecycle, from concept and design through to integration, testing and delivery, as part of a multidisciplinary engineering team shaping the future of maritime autonomy. What you’ll be doing Designing and developing software for advanced autonomous systems Supporting integration and delivery activities across complex engineering projects Collaborating with hardware, systems and domain experts throughout the development lifecycle Engaging directly with end users to refine functionality and performance Taking a lead role in development discussions and cross-team collaboration What you’ll bring Proven experience in software design and delivery A degree (or equivalent experience) in Software Engineering, Computer Science, or a related discipline Knowledge of autonomous system architectures and the marine or defence domain Strong understanding of software engineering processes, tools, and lifecycles Experience working in multi-disciplinary engineering environments Technical skills Essential: Java development Java build systems (e.g. Maven) Experience with the Atlassian toolset (Jira, Confluence, Bitbucket) Knowledge of ISO 9001 quality principlesDesirable: HMI / UI development (e.g. JavaFX) GIS development Communication and control system interfaces Git version control UML design Why apply? Hybrid and flexible working options (full-time, part-time or condensed hours) Excellent professional development and progression opportunities Collaborative and innovative engineering culture Competitive salary, pension and benefits Security Clearance: Applicants must be eligible to obtain UK Security Clearance (SC). TT

Principal Software Engineer
Eurochange
Stevenage
Hybrid
Senior
£60,000 - £70,000
RECENTLY POSTED

Principal Software Engineer Hours: 40h p/w
Location: Hybrid or Remote
Salary:60k-70k

Build the platforms that power better travel money

At eurochange, we re transforming foreign exchange making it better, simpler and more convenient for millions of customers. Technology is at the heart of that journey, and we re looking for a Principal Software Engineer to help shape the platforms that drive our digital future.

This is a senior, hands-on technical leadership role where you ll influence architecture, guide engineering standards, and deliver enterprise-grade solutions that scale with our ambitions.

What you ll be doing

As our Principal Software Engineer, you ll be a technical authority across our digital platforms, combining architectural vision with practical delivery. You ll:

  • Lead end-to-end full-stack delivery, from backend services and APIs to customer-facing and internal applications
  • Shape and evolve platform and system architecture, ensuring solutions are secure, scalable and future-ready
  • Translate business strategy into robust technical designs, balancing innovation with resilience
  • Set the standard for clean code, engineering best practice and quality across teams
  • Drive modernisation initiatives, reducing technical debt and improving performance
  • Champion DevOps, CI/CD and automation, enabling faster, safer releases
  • Embed security, compliance and GDPR-by-design into everything we build
  • Collaborate closely with Product, Design, Architecture and senior stakeholders
  • Mentor and influence engineers at all levels, raising the bar for technical excellence

About you

You re a strategic, hands-on technical leader who enjoys solving complex problems and influencing direction. You re trusted for your judgement, calm under pressure, and passionate about building systems that last.

You ll bring:

  • Expert-level experience with C#, .NET and object-oriented design
  • Strong front-end knowledge using JavaScript/TypeScript and React
  • Deep experience designing and governing enterprise APIs (REST & SOAP), ideally on Azure
  • Proven leadership in DevOps, CI/CD pipelines and cloud-native environments
  • Advanced SQL Server and data modelling expertise
  • Strong understanding of microservices and distributed systems
  • Experience with CMS platforms (e.g. Umbraco) and third-party integrations
  • A collaborative mindset and the ability to influence without line management

Our Perks Are Out of This World!

  • Colleague Rate on Travel Money
  • 28 days holiday (inclusive of bank holidays)
  • High Street Discounts
  • Free 24/7 Virtual GP service for you and your family
  • Cycle to Work Scheme
  • Employee Wellbeing & Financial Support through Retail Trust
  • Employee Assistance Programme because you matter!
  • Wagestream access your earned wages when you need it
  • Recognition Awards for outstanding service
  • Additional holiday entitlement after 1 year
  • Life Assurance
  • and much more!

Our Vision

To be the UK s go-to travel money provider, adding value to every customer s journey!

Our Purpose

Foreign exchange but better, simpler & more convenient, we re the trusted inspirational experts.

Our Values

We Strive, We Trust, We re Aspirational, We re Responsible, We re Sincere

Full Stack Software Developer
Redline Group Ltd
Ashby-de-la-Zouch
In office
Mid - Senior
£60,000
RECENTLY POSTED
+6

We are working with a globally recognised, high-growth technology business within the transport sector to recruit an experienced Full Stack Software Developer based in Ashby-de-la-Zouch.

This is an exciting job opportunity to join a forward-thinking engineering team working on long-term, innovative projects within a fast-growing market. As a Full Stack Software Developer, you will play a key role in designing, building, and deploying scalable, cloud-based applications that support mission-critical systems. In this job, you will contribute across the full software development lifecycle, from architecture and feature development through to deployment, optimisation, and continuous improvement.

Experience required for the Full Stack Software Engineer job based in Ashby-de-la-Zouch:

Front-end development using Vue.Js (preferred), React, or Angular

TypeScript and JavaScript

C#

MongoDB and Microsoft SQL

.NET 8/9 (APIs and background worker services)

Docker / containerisation

Cloud deployments (Azure, AWS, etc.)

Node.Js

Why Apply?

Join a rapidly expanding technology business operating at the forefront of transport innovation.

Work on impactful, real-world systems

Be part of a collaborative, quality-driven engineering culture.

Long-term project pipeline offering strong contract stability and extension potential.

If you are a Full Stack Developer based in Ashby-de-la-Zouch with strong cloud, .NET, and modern JavaScript framework experience, please send your CV to or call Ben on 07471 181784.

TPBN1_UKTJ

Senior Full Stack Developer
Stackstudio Digital Ltd.
Multiple locations
Hybrid
Senior
£70,000
RECENTLY POSTED
+1
  • Role/Job title:Senior Full Stack Developer
  • Mode of working London-3 days onsite
  • Type of Employment-Permanent

The Role

As aSenior Full Stack Developer, you will design and deliver end-to-end application solutions using cloud platforms such as Azure, AWS or GCP, alongside modern technologies including NoSQL databases, Python, React, TypeScript and DevOps tooling. You will work on cutting-edge projects, develop scalable applications and collaborate with cross-functional teams to deliver high-quality solutions.

Key Responsibilities:

  • Own the end-to-end architecture across front-end, back-end, APIs, data and system integrations.
  • Define reference architectures, technology standards and design principles for development teams.
  • Make strategic technical decisions balancing scalability, security, cost efficiency and delivery speed.
  • Design and develop accessible, secure and scalable front-end applications using React and TypeScript.
  • Establish standards for state management, authentication flows and UI/UX consistency.
  • Architect back-end services using Node.js or Python, including REST APIs and event-driven patterns.
  • Apply microservices principles, resiliency patterns and fault-tolerant design.
  • Model and manage relational and NoSQL databases such as MongoDB and Postgres, including caching and data access strategies.
  • Architect cloud-native solutions on AWS, Azure or GCP, incorporating CI/CD pipelines and Infrastructure as Code.
  • Build for high availability, disaster recovery, cost optimisation and embedded observability.
  • Apply secure coding practices and design robust authentication, authorisation and data-protection models.
  • Ensure compliance with enterprise security policies and regulatory standards.

Essential skills / knowledge / experience:

  • Hands-on experience in software development and solution architecture.
  • Deep expertise in Azure, AWS or GCP cloud services. Strong background in backend development (TypeScript, React, Node.js, Python), REST APIs and microservices.
  • Experience working with NoSQL databases such as MongoDB or Postgres.
  • Proficiency with CI/CD pipelines, Infrastructure as Code and DevOps practices.
  • Excellent communication and presentation skills, with the ability to articulate complex concepts clearly.
  • Familiarity with AI/ML integration and secure cloud architecture is an advantage.

Permanent Interview Format:1. Live coding+ 2 interview rounds

Senior Platform Engineer
Immersive Finance
London
Hybrid
Senior
Private salary
RECENTLY POSTED
+2

Location:London (Hybrid)

Type:Permanent

Industry:High-Performance Trading / Financial Markets

About the Company

Immersive Finance provides institutional-grade risk infrastructure for digital asset derivatives. Our team comprises seasoned traders, quantitative researchers, and technologists with decades of experience at leading buy- and sell-side institutions. We specialise in advanced risk management solutions, pricing analytics, and market data, enabling institutional clients to capitalise on opportunities in digital asset derivatives. We are committed to delivering cutting-edge technology and insights to clients operating in this dynamic market.

Must Have Experience

  • Experience in delivering production code.
  • 5-10 yearsin Finance or Trading Systems.
  • AdvancedC++skills.
  • StrongPythonengineering experience.
  • Strong understanding ofdatabases(SQL and high-performance solutions).
  • Expertise in building and supportinghigh-availability,mission-critical systems.

Desireable

  • Experience building and deploying docker containers.
  • Experience ofFX,Crypto, orDerivativesmarkets.
  • Experience withPostgres,ClickHouse, or other high-performance storage solutions.
  • Exposure to real-time data, low-latency networking, and distributed systems.

Our Stack

  • Python, C++.
  • Multi-cloud infrastructure/deployment.
  • Standard SDLC (i.e., Git workflow, build, continuous integration).
  • Git/JIRA/Confluence.
  • High-availability database clusters (Postgres Timescale DB)
  • Queues (i.e., Kafka).
  • Linux.
  • High-performance distributed contributing.
  • Interfaces - API/Websockets.

What We’re Looking For

  • Someone who ships high-quality code quickly.
  • Someone who doesn’t need hand-holding,
  • Someone who likes solving gnarly engineering problems in fast-moving markets.
  • Someone who takes ownership and isn’t afraid to call out bad assumptions.

Why Join Us?

You’ll work in a small, sharp, highly technical environment where your engineering decisions directly shape the platform. No bureaucracy, no pointless meetings, no slowdowns; just hard problems, smart people, and serious impact.

What You’ll Do

  • Design and build robust software as a service providing tools for real-time pricing, market data, risk management, and position lifecycle management of digital assets and structured products.
  • Work across C++, Python, and modern database technologies to support execution, pricing, risk, and market data.
  • Engineer systems that are resilient, highly available, and capable of handling high throughput.
  • Collaborate closely with quants, products, and founders to ship features that genuinely move the needle.
  • Optimise performance, streamline infrastructure, and keep the platform rock-solid under load.
Senior Quantitative Developer
Vallum Associates Limited
London
Hybrid
Senior
Private salary

Job Title: Job Title: Quantitative Developer

Location:London, UK (Hybrid 3 days onsite per week)
Contract Type:Inside IR35

Experience

  • 10+ years of professional experience as a Quantitative Developer or Senior Software Engineer within financial services.

Role Overview

We are seeking an experienced Quantitative Developer to build and enhance high-performance trading and analytics platforms. The role involves close collaboration with quantitative researchers and trading teams to deliver robust, scalable, and production-ready systems in a fast-paced environment.

Key Responsibilities

  • Design, develop, and maintain high-performance trading, pricing, and analytics systems
  • Implement quantitative models and strategies usingC/C++ and Python
  • Optimise applications for low latency, high throughput, and stability
  • Work extensively inLinux environments, including automation viashell scripting
  • Collaborate with quants, traders, and technology teams to productionise research
  • Troubleshoot complex production issues and drive continuous performance improvements
  • Adhere to best practices for code quality, testing, and version control usingGit

Required Skills & Experience

  • Expert-level development experience inC and/or C++
  • Strong hands-on experience withPythonin production environments
  • Deep knowledge ofLinux systems, performance tuning, and debugging
  • Proficiency inshell scripting(Bash or similar)
  • Strong experience withGitand collaborative development workflows
  • Proven experience delivering mission-critical systems in financial services

Desirable Skills

  • Background in quantitative finance, trading systems, or capital markets
  • Experience with low-latency architectures, multithreading, and concurrency
  • Understanding of numerical methods, statistics, or financial models
Software Engineer
Tiro Partners
Burgess Hill
Hybrid
Mid - Senior
£280/day
+8

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.

Data Engineer DV Cleared
Datatech Analytics
North West England
Hybrid
Mid - Senior
Private salary

Data Engineer Opportunity, DV-cleared only

London Manchester Bristol

A progressive, leading-edge UK consulting and technology organisation is hiring Data Engineers to deliver mission-critical work across defence and security programmes, building modern data platforms and production-grade pipelines that enable better decisions at pace. Active DV clearance is essential, we are seeking DV cleared candidates only.

The role
You’ll design and deploy production-grade data pipelines, from ingestion through to consumption, within a modern big data architecture. Work is delivery focused and delivered using agile engineering practices.

Typical responsibilities
Build and operate robust pipelines across ingestion, processing, and consumption
Use scripting, APIs, and SQL to extract, transform, and curate data
Process large structured and unstructured datasets, integrating multiple sources
Collaborate with stakeholders and delivery teams to drive outcomes
Core skills (indicative)
Production pipeline design and deployment experience
Strong engineering capability with Python, SQL, plus big data tooling (e.g., Spark, and Java/Scala where relevant
AWS, Azure, GCP

Working pattern

Hybrid working, with the team on client site or in the office a minimum of two days per week. Actual time and location will vary by role or assignment.

Software Engineer - Data Analytics
CBSbutler Holdings Limited trading as CBSbutler
Telford
Hybrid
Mid - Senior
£450/day
+8

Job Title: Data Engineer

Rate: £450 per day inside ir35

Duration: 6 months

Location: Telford/hybrid - (2 days on site)

SC security clearance is required for this role

Job Description:

You should have experience as a Software Engineer delivering within large scale data analytics solutions and the ability to operate at all stages of the software engineering lifecycle, as well as some experience in the following;

Awareness of Devops culture and modern engineering practices
Experience of Agile Scrum based delivery
Proactive in nature, personal drive, enthusiasm, willingness to learn
Excellent communications skills including stakeholder management Have experience in some of the following technologies:

ETL toolset (Talend, Pentaho, SAS DI, Informatica etc)
Database (Oracle, RDS, Redshift, MySQL, Hadoop, Postgres, etc)
Job Scheduling toolset (Job Scheduler, TWS, etc)
Programming and scripting languages (PL/SQL, SQL, Unix, Java, Python, Hive, HiveQL, HDFS, Impala, etc) Must have knowledge of these tools:

ALM Tooling (Jira, Confluence, Bitbucket)
CI/CD toolsets (Gitlab, Jenkins, Ansible)
Data virtualisation tools (Denodo)
Reporting (Pentaho BA, Power BI, Business Objects, Grafana) If you are interested in this role or wish to apply, please feel free to submit your CV

Mainframe DB2 System System Admin - Edinburgh/London
Infoplus Technologies UK Ltd
Edinburgh
Hybrid
Mid - Senior
Private salary

Duration: 6+ Months contractLocation: London/Edinburgh (Hybrid)
Role description:The ideal candidate ensures high availability and optimal performance of the DB2 subsystem. This role requires deep technical knowledge of SMP/E, z/OS internals, and third-party management tools like Broadcom (formerly CA) Platinum and Broadcom SYSVIEW.
Core Responsibilities:Installation & Maintenance: Use SMP/E to install, patch (PTFs), and upgrade DB2 subsystems.System Performance: Monitor and tune DB2 system parameters (ZPARMS), buffer pools, and EDM pools.Disaster Recovery: Design and implement backup and recovery strategies for the DB2 catalog and directory.Tooling Management: Install and maintain third-party products (e.g., Platinum, SYSVIEW for DB2) to assist in database management and monitoring.Security: Implement and manage DB2 security using RACF, ACF2, or Top Secret.
Key skills:The ideal candidate ensures high availability and optimal performance of the DB2 subsystem. This role requires deep technical knowledge of SMP/E, z/OS internals, and third-party management tools like Broadcom (formerly CA) Platinum and Broadcom SYSVIEW.Additional qualifications: Experiance in IMS installation and Production db2/ims DBA support

Software Engineer (Active SC required)
Sanderson Recruitment
Normanton
Hybrid
Mid - Senior
Private salary

Software Engineer - Defence & National Security

Gloucester or London | 2-3 Days On-Site Per Week
SC Clearance Required (and eDV eligibility essential)
Build secure, mission-critical systems that help protect the UK.

We’re hiring experienced Software Engineers to work on high-impact defence and national security programmes. You’ll help deliver secure, resilient, and sophisticated software solutions that support critical operations - all within a mission-led, engineering-focused environment.

This role is ideal for engineers who want meaningful, technical work in a sector where quality and security truly matter.

The Role

As a Software Engineer, you’ll design, build and maintain software within secure, highly-regulated environments. You’ll join a multidisciplinary team of engineers, analysts and security specialists, contributing to complex systems that support UK national security.

You will work in a hybrid model, spending 2-3 days per week on-site in either Gloucester or London (secure facilities), with the remainder from home or a non-secure office depending on project needs.

?? What You’ll Be Doing

  • Designing and developing secure, reliable and scalable software components
  • Writing high-quality, well-tested code suitable for sensitive environments
  • Supporting CI/CD pipelines built for restricted or hybrid networks
  • Collaborating with systems engineers, cyber specialists and product teams
  • Contributing to architecture decisions and technical roadmaps
  • Troubleshooting complex issues across distributed and secure systems
  • Applying strict coding, security and governance standards
  • Documenting key decisions, processes and technical designs
  • Working with teams embedded inside defence and intelligence organisations

What We’re Looking For

Essential

  • Active SC clearance
  • Eligibility for eDV clearance (UK national or other qualifying criteria)
  • Software engineering experience across design, development, testing and deployment
  • Proficiency in one or more key languages: Java, Python, C++, C#, JavaScript
  • Understanding of secure software engineering principles
  • Experience with CI/CD pipelines and version control (Git)
  • Familiarity with modern development practices and automated testing
  • Ability to work 2-3 days per week on-site in Gloucester or London
  • Strong communication skills, including working with multidisciplinary teams

Desirable

  • Experience working in public sector, defence, national security or other highly regulated environments
  • Knowledge of distributed systems, event-driven architectures or messaging frameworks
  • Experience with Docker/Kubernetes or secure containerised systems
  • Familiarity with hybrid cloud or secure on-prem environments
  • Interest in emerging technologies, data-intensive platforms or mission systems

Who This Role Suits

You’ll thrive here if you:

  • Want to contribute to the UK’s defence and national security mission
  • Enjoy solving complex, sensitive engineering challenges
  • Are comfortable with structured environments and high assurance processes
  • Prefer collaborative, multi-disciplinary technical teams
  • Take pride in building secure, robust, well-engineered solutions

Security & Working Environment

  • Active SC clearance is mandatory
  • eDV eligibility is required - the role will sponsor eDV when appropriate
  • Must be able to work on-site 2-3 days/week in Gloucester or London
  • Work may require access to secure networks or classified environments

What’s in It for You

  • Chance to work on mission-critical systems with real societal impact
  • Exposure to some of the UK’s most unique engineering challenges
  • Strong progression routes into tech leadership, architecture or specialist roles
  • Training and development tailored for defence and national security engineering
  • Supportive engineering culture and knowledge-sharing community

?? Interested?

If you’re a Software Engineer with SC clearance, eligibility for eDV, and a passion for solving meaningful problems in defence and national security, we’d love to hear from you.

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

Data Engineer
Anson McCade
Multiple locations
Hybrid
Mid - Senior
£90,000

Data Engineer Hybrid / UK (DV Clearance Required)

We are working with a leading global consultancy to hire a DV-cleared Data Engineer who will turn complex data into actionable insights. In this role, youll collaborate with multidisciplinary teams to design, build, and optimise production data pipelines, delivering scalable, high-impact digital solutions across a variety of sectors.

About the company:
Our client operates at the intersection of strategy, technology, and innovation. With a diverse team of over 4,000 experts across the UK, Ireland, US, Nordics, and Netherlands, they help clients adapt and transform across multiple industries, including consumer and manufacturing, defence and security, energy and utilities, financial services, government, health and life sciences, and transport.

The role:
As a DV-cleared Data Engineer, youll work alongside cross-functional teams to design, build, and optimise production data pipelines. Youll leverage AWS cloud technologies and open-source tools to transform complex data into scalable solutions that power decision-making and innovation.

Why you should apply:

  • Collaborate with product, design, and technology experts to bring ideas to life through innovative software solutions.
  • Progress your career on a technical track in a supportive, inclusive, and trust-based environment.
  • Hybrid working: minimum two days per week in the office or on client site.
  • Work on diverse projects with varied tech stacks across multiple industries.
  • Access professional development, including technical courses, certifications, mentoring, and coaching.

Tech stack:

  • AWS cloud (EMR, Glue, RedShift, Kinesis, Lambda, DynamoDB) for ETL, data lake/warehouse design, and data movement.
  • Programming: Java, Python, Scala, Spark, SQL.
  • Experience integrating and processing large-scale structured and unstructured datasets from multiple sources on AWS cloud.

Essential requirements:

  • DV clearance is mandatory.
  • Strong problem-solving and analytical skills.
  • Collaborative mindset, comfortable working with multiple stakeholders in fast-paced environments.
  • Proven experience designing and deploying production data pipelines from ingestion to consumption.
  • Familiarity with API data extraction, scripting, and SQL querying.
  • Experience processing large-scale data in cloud environments (AWS preferred)

What’s in it for you?

  • 25 days annual leave (+ Christmas Eve half-day) with option to buy additional days
  • Private healthcare for you and your family
  • Generous pension scheme and performance-based bonus
  • Share ownership and tax-efficient benefits
  • Community, charity initiatives, and career development support

Ok I’m in what’s next?
Please apply with your latest CV

Senior Low-Code Engineer, Low-Code Team Leader, Power Platform
Carrington Recruitment Solutions Limited
West End
Hybrid
Senior
£75,000
TECH-AGNOSTIC ROLE

Senior Low-Code Engineer, Low-Code Team Leader, Power Platform, Co-Pilot, Mainly Remote Senior Low Code Developer / Senior Low Code Engineer / Low Code Team Leader is required to work for a fast-growing and exciting company based in Central London. However, this will mainly be remote and the expectation is to go into the office circa twice a month. Please read in full before applying We need someone with a Microsoft tech-stack background who has experience as a Low-Code Engineer / Developer with Power Platform experience. Knowledge of and exposure to the likes of (not all, but some!) Microsoft Co-Pilot Studio, Azure DevOps, DevSecOps, D365 would be useful. A strong and proven leader is required who can assist with mentoring more junior members of the team, along with being a confident communicator with the Stakeholders. Questions to ask yourself and answer confidently would be the likes of: How do I work in an Agile environment? (break it down and provide a solid answer) How do I know I am developing the right things for the business? What is the common goal of what we are all trying to achieve here? This is how the business works and thinks. Some people are guilty of developing for the sake of it. This is all about building for purpose and helping to take this business on a journey. Read on for more details Skills required: Strong leadership skills Background in a heavily regulated environment would be preferred Strong understanding of Microsoft's Power Platform, other low-code platforms are an advantage Experience in leading cross-functional teams and managing multiple projects effectively Proven ability to set and monitor governance standards on low-code platforms Familiarity with Azure Logic Apps and Microsoft 365 integrations, including Microsoft Graph Experience in running Power Platform solutions in production scenarios Strong understandings of Power Platform licensing best practices This is a great opportunity and salary is dependent upon experience. Apply now for more details.

Graduate Software Developer
STEM Solutions
Bristol
In office
Graduate
£30,000 - £40,000

G
Graduate Software Developer (Cyber Security Focus)
Bristol | Java, Python, C#, Object-Oriented Programming
About the Company
We are currently partnering with a global technology organisation that delivers cutting-edge cyber security and digital solutions to a diverse client base. Known for adding real value through innovative and secure technical systems, they are now looking to invest in a Graduate Software Developer, with full training and structured development provided.
This is an excellent opportunity to launch your career in cyber security-focused software engineering within a fast-growing and highly technical environment.
The Role
This role sits at the intersection of software development and cyber security consultancy.
You will work with a wide range of organisations, helping them strengthen their security posture by developing secure, scalable, and robust software solutions. You’ll gain exposure to real-world cyber threats, secure coding practices, and enterprise-level security architecture.
The ideal candidate will be equally comfortable writing high-quality code and engaging in technical discussions around security risks, vulnerabilities, and implementation strategies.
There is clear and fast progression available for motivated individuals.
Key Responsibilities
*
Design and develop secure, testable, and maintainable code
*
Apply secure coding principles to protect systems against vulnerabilities
*
Work collaboratively within a technical team to deliver tailored cyber security solutions
*
Communicate effectively with key stakeholders to understand security requirements
*
Contribute to improving processes, documentation, and best practices
*
Demonstrate strong organisational skills and time management
Requirements
*
2:1 or above BSc in Computer Science or a related discipline
*
Strong interest or experience in Java, Python, C#, or other object-oriented programming languages
*
Genuine interest in cyber security, secure systems, and emerging threats
*
Ability to obtain or hold UK security clearance (British Passport required)
*
Strong communication skills and a proactive mindset
Salary & Benefits
*
Starting salary from £30,000+
*
Full-time, permanent position
*
Structured training and development
*
Opportunity to become a shareholder
*
Gym membership
*
Generous pension scheme
*
Clear and accelerated progression pathway
If you’re passionate about writing secure code and building resilient systems that protect organisations from evolving cyber threats, this is a fantastic opportunity to kick-start your career.
Apply now to be considered

Frequently asked questions
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To apply for Backend Engineer jobs, simply create an account on Haystack, upload your resume, and submit applications directly through the platform. Some listings may also redirect you to the employer's application portal.