Technical Architect Jobs in London

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Technical Architect Jobs in London

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Looking for Technical Architect jobs in London? Explore top IT roles on Haystack, the leading job board connecting skilled Technical Architects with London’s fastest-growing tech companies. Find your next Technical Architect position in London today and take your career to the next level!

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Principal Network/IT Design Engineer

Are you ready to shape the future of intelligent buildings and mission-critical environments? We’re looking for a skilled Network/IT Design Engineer to join our dynamic team and lead the technical delivery of innovative ICT systems across high-profile projects.

You will be able to:

Define Scope & Interfaces: Lead the creation of Demarcation Documents, clearly outlining scope, OFCI, and system interfaces.

Design Excellence: Deliver Technical Design to RIBA Stage 4, updating and refining existing designs to meet evolving client needs.

ICT Systems Design: Produce detailed designs and specifications for:

Structured cabling (backbone & horizontal)

WiFi systems

DCIM

Access Control (ACS), Intrusion Detection (IDS), and Video Surveillance Systems (VSS)

Cabinet and containment layouts, coordinated with engineering teams

Stakeholder Collaboration: Work closely with clients and project teams to ensure designs align with requirements and expectations.

Technical Documentation: Generate 2D AutoCAD drawings and 3D BIM models in collaboration with internal Revit teams.

Tender Support: Develop comprehensive technical specifications and tender documentation for ICT systems and equipment.

Systems Integration: Support coordination with Pearl/STACK for seamless IT operations and security systems integration.

Company Overview

Black & White Engineering is a multi-award-winning engineering consultancy, with nearly 900 employees in teams based in our UK, European, Middle East and Asia Pacific offices.

We have been providing a wide range of Mechanical, Electrical and Plumbing (MEP) engineering consultancy services since 2007 and are now expanding our Civil and Structural Engineering division.

Our engineering expertise reaches across all sectors of the construction industry, providing pragmatic and practical design solutions to ensure our projects are spatially and operationally efficient. Our design process fully considers the installation and maintenance practicalities on site.

With Black & White’s exponential growth over the last few years, numerous colleagues have progressed from engineering roles into leadership positions. You will be able to make an impact both internally and with clients and receive suitable recognition.

Benefits

Discretionary Annual profit related bonus (normally between 6% and 10%, based on company performance)

Pension (5% minimum contribution from the employee and 7% employer contributions)

Flexible working - 3 days in office / 2 days WFH

Private Health Care

4x life assurance

Payment protection scheme (75% of your salary paid for up to 3 years if in long term sickness absence)

25 days holiday (option to purchase 5 extra days through salary sacrifice)

Excellent personal / professional development opportunities

Ready to take the lead? Apply now and let’s build something extraordinary together.

SOC Principal Analyst

QBE Management Services (UK) Limited

Time Type: Full time Worker Type: Employee

SOC Principal Analyst

Permanent

London/ Hybrid

At QBE, our purpose is to enable a more resilient future.

We are an international insurer and reinsurer with a local presence in 27 countries.

The Opportunity

QBE Europe is currently recruiting a SOC Principal Analyst to join our cyber security team in our London Office. Reporting to regional team leads, the SOC Principal Analyst will be a key member of our rapidly growing Global Security Operations team.

Your new role

This is an exciting hands-on technical role in which the specialist will use their security skills and knowledge to perform advanced analysis on the collection of cyber threats using high-level proactive and reactive threat hunting methods, classifying, analysing, prioritising and remediating security alerts/events.

The focus is to provide effective, proactive and a highly technical analytical response to cyber security-related incidents to prevent QBE from becoming compromised by modern attack methods and techniques.

Main responsibilities:

Act as point of escalation and mentor to junior SOC analysts.

Translates business objectives into security objectives by providing support in design/architecture for new security applications to improve the current security posture globally for QBE.

Recommends and implements initiatives, develops IR processes and procedures.

Contribute to the ongoing development of security operations “best practice” and support continuous improvement.

Provide guidance regarding security technical support, and influence peers in following best practice.

Review new security products and ascertain their suitability for the QBE environment.

Execute threat hunting activities using various proprietary and open source tools to identify current and emerging threats that pose a risk to QBE.

Build strong relationships with internal and external stakeholders to maintain and improve QBE security and enhance knowledge and information sharing.

Actively communicate with staff and third parties to correctly identify and resolve problems and manage their expectations.

Document incidents, requests and problem management information to ensure required compliance standards/SLAs are achieved.

Use security tools and resources to correlate suspicious events, providing context around the event, determine root cause and provide regular updates and recommend modifications to existing systems and procedures.

Perform deep-dive incident analysis of various data sources by analysing and investigating security related logs against medium-term threats and IOCs

Actively manage and apply the phases of Incident Response (preparation, identification, containment, eradication, recovery and lessons learned)

Act as a point of reference to guide and advise others to ensure the sharing of knowledge and best practice throughout the team.

About you

Advanced technical expertise of security solutions and technologies, including: Windows, Linux, Networking, Security Architecture experience and knowledge of packet flow/TCP/UDP traffic, Firewall and proxy technologies, cloud solutions, anti-virus, static and dynamic malware analysis techniques

Expert in performing analytics with different types of logs, i.e. network, active directory, database, DNS, firewall, proxies, host-based security, cloud and applications logs etc.

Working experience in leading security incidents at all levels related to incident response

Working experience in managing 2nd/3rd level security events

Ability to manage strong relationships with global security operations colleagues and other departments, including network teams and incident managers.

Demonstrated ability to make decisions on remediation and counter measures

Be able to communicate effectively and update senior stakeholders globally

Why QBE? At My Best?

?At QBE, we want our people to feel rewarded and inspired to perform at their best, that’s why we have created “At My Best”.It’s our connection, our way of showing we have your back. We understand that one size doesn’t fit all and that priorities can change depending on your life stage. That is why our blend of wellbeing initiatives and benefits offer flexibility to suit what matters most to you. It’s in the culture of our business, our QBE DNA, to support our people. Everything we do is underpinned by our QBE DNA.

Principal Salesforce Engineer - Azure/.Net/React

Principal Engineer

This is a fantastic opportunity to work in a product-led operating model, where all our teams are value stream aligned with all the different resource types needed to get from idea to done with minimal hand-offs.**Open to multi locations (2-3 days a week):**LondonTunbridge WellsBournemouthBristol

We’re focused on building out our Single Digital Platform, centred around Salesforce, but involving a significant .NET estate and use of Azure services. Our mission is to re-platform our business, providing efficiency, flexibility, and more than anything else, better health outcomes for our millions of members in the UK.

What you’ll be doing:

Leading a product engineering team, taking ownership of meeting delivery outcomes as per our transformation roadmap

Working within the Engineering Leadership Team to set the Engineering strategy and delivering on it

Spending a large amount of your time being hands-on with the code, e.g. reviewing Pull Requests and ensuring best practices are followed by both full time and third-party engineers.

Inspiring excellence in our teams and driving improvements in employee engagement, performance, and wellbeing.

Representing engineering in your teams, working with Product Owners, Scrum Masters, and Business subject matter experts, to ensure our business commitments are delivered with quality and to expectation.

Assessing new technology solutions

Ensuring our non-functional requirements are met regarding performance, scalability, resilience, and GRC requirements (Information security, risk, industry regulation compliance)

Helping to encourage collaboration and product ownership across developers and testers

Ensuring continual shift of secure, quality and tested code activity left

Working to improve and ensure implementation of our SDLC

Working in a multi-vendor environment, providing direction and support to the delivery teams

Improving our core DORA metrics and ensuring optimal flow through our systems and processes What you’ll bring:

Proven experience building and leading high performing engineering teams

Expertise in Salesforce and it’s ecosystem, building business solutions using Salesforce and scaling them in large enterprises, integrating Salesforce based services with multiple different applications and architectures.

Experience with Azure and .NET services, ADO pipelines, and React web applications is a big plus.

Experience designing and delivering complex solutions to time and budget, being accountable for outcomes not output

Proven experience in being responsible for application estates that manage high volumes delivering critical business value, with experience of doing this in the financial services sector a plus

Strong stakeholder management across a variety of business domains

Good understanding of current and emerging technologies and their potential to deliver business benefits

Ability to translate business strategy into technical solutions and business requirements into technical design

Experience working in Agile environments and a deep understanding of how to ensure optimum flow of work through the full SDLC

Prior experience working in a product-centric organisation preferred**Open to multi locations (2-3 days a week):**LondonTunbridge WellsBournemouthBristol

Robert Walters Operations Limited is an employment business and employment agency and welcomes applications from all candidates

Lead QA Engineer, Commodities Trading, London

Lead QA Engineer - Commodities / Trading Client - £135k + Extensive Benefits**, London**

My Leading Commodities Trading Client are looking for a Lead QA Engineer to Lead on Strategy, Focus and Delivery for a team of 8 UI, DB, API QA’s working in a C# / JavaScript Technology Stack having ownership for the Oil and Gas Trading Platform.

This role is 3 days a week in London.

Key Responsibilities:

Lead Testing across multiple projects, ensuring successful execution of test plans to schedule.

Create and deliver comprehensive test automation strategy that aligns with the projects objectives.

Design and lead on development of automated test scripts and test data using (c#, Javascript)

Lead Team of 8 QA Engineers across (UI, DB and API Testing), Goal Setting, Direction, Priority / Focus, Delivery etc.

Key Requirements:

Extensive experience in Automated Testing across UI, DB and API in a Trading Environment.

Depth of knowledge in C# and Javascript

Strong Commodities Trading Experience (Ideally Oil and Gas)

Please apply with your CV and contact details if you are interested in pursuing this opportunity.

Technical Programme Manager

Harnham - Data & Analytics Recruitment

Job Title: Technical Programme Manager

Location: Central London (2 days per week)

Contract Length: 12 months

IR35 Status: Outside IR35

Rate: £600-£650/day

Start Date: Immediate

Overview

We are seeking a Technical Programme Manager to lead and implement a new system strategy. The team is undergoing changes, and this role will help establish the right structure and governance to deliver high-impact technology programmes.

This position involves overseeing system strategy across multiple tools, addressing duplication, and ensuring better governance. The current environment includes managing approximately £20m/year in system spend, with a need to consolidate and optimise systems and processes.

Key Responsibilities

Conduct top-down audits of existing systems and tools.

Define and implement a holistic system strategy.

Create clear work frames and project milestones.

Manage implementation projects (e.g. Stackzig).

Deliver high-impact programmes with senior-level sponsorship.

Required Skills & Experience

Proven experience managing technical programmes

Strong communication and confidence in working with technology teams.

Familiarity with AWS backend architecture (preferred).

Experience in consumer tech or travel sectors, ideally with companies of 750-1,500 employees.

Rust Developer - Crypto Trading

Rust Developer / Backend Software Engineer (Rust HFT) London / WFH to £180k

Do you have expertise with backend software engineering within trading / finance environments?

You could be progressing your career in a senior, hands-on Rust Developer at a hugely profitable High Frequency Trading firm that specialise in crypto markets.

As a Rust Developer you will design and develop backend services for real-time risk, pricing, trading engines and market making systems, working across the full software development lifecycle using Rust. You’ll collaborate with a small, talented team, collaboratively problem solving and working on complex and challenging systems with interesting work and huge bonus earning potential.

Location / WFH:

You’ll join the team in Central London with flexibility to work from home twice a week.

About you:

You have strong backend OOP, multithreaded software engineering experience (e.g. C++, Java, Python)

You have commercial Rust development experience

You have experience of working on high throughput, low latency trading systems

You achieved a 2.1 or above in Computer Science from a top tier university

You are collaborative and pragmatic with great communication and stakeholder management skills, also with some leadership or mentoring experience

What’s in it for you:

As a Rust Developer you will receive a competitive package:

Apply now to find out more about this Rust Developer / Backend Software Engineer (Rust High Frequency Trading) opportunity.

Ref: PR/100228/C/KS

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.

DevSecOps Engineer, Development Background, Microsoft Stack, Mainly Remote

Carrington Recruitment Solutions Ltd

Azure Lead Software Security Engineer with Development Background, DevSecOps, Mainly Remote

Software Security Engineer Lead is required to work for a fast-growing and exciting company based in Central London. However, this will mainly be remote. Please read in full before applying

We need someone with a Microsoft tech-stack background who has experience as a Azure DevSecOps Consultant or even a good old fashioned Unix / Linux Systems Administrator. We want someone with a development / some form of coding background who has blossomed into Software Security / Cloud Security engineer. We NEED for you to have strong Azure skills, NOT AWS although a blend would be acceptable.

Rather than someone from a bog-standard IT Operations background, we NEED you to have come from a Development background and you MUST have a good grounding within Software Development as you will mainly working with Developers and need to be able speak their language and develop trust with them.

This role was very successfully introduce into this company 2 years ago and as such they need someone to pick up the baton and continue to develop the function. You will be working with a crossfunctional teams and as such you need to have strong communication skills to be able to work various functions. There will opportunity to grow yourself and a team as the company matures. This role is a lead “hands on” role and is perfect for some who has come from a consultancy background with appropriate hands on skills.

A passion a modern security approach is paramount, where you help teams build security into their daily work life and are always looking automate, streamline and shift left with compermise of quality and overall security.

Read on for more details

Experience Required:

Demonstrable experience as a Systems Administrator or Software Developer or both!

Expert Knowledge of Cloud Security

Passion for DevSecOps and with knowledge of Terraform, Bicep, Sonar Clous, Wiz, and other security product like Trivy

Experience with cloud computing platforms such as Microsoft Azure

A strong understanding of software development methodologies and practices

Ability to Rapid Risk Assessment and Threat Modeling

Other technical skills required: Azure Security Monitoring including Application Insights, and SIEM

Excellent communication skills to guarantee stakeholder alignment and successful outcomes at all stages of Product delivery and ongoing support.

This is a great opportunity and salary is dependent upon experience. Apply now for more details.

Network Architect London (Hybrid, 3 days in office) £80,000-£85,000 + Bonus + Benefits

Zachary Daniels are delighted to be working with a global business during an exciting period of transformation, to recruit a Network Architect / Specialist. This is a strategic and hands-on role, responsible for shaping and evolving enterprise network architecture across the UK and Europe.

With a remit covering multiple sites in London, Belgium, and Denmark, you’ll design and deliver resilient, scalable, and secure networks that support warehousing, manufacturing, and industrial operations. Balancing technical depth with architectural strategy, you’ll work with Cisco Meraki, Fortinet, and third-party providers to ensure best-in-class performance and security.

Benefits You’ll Enjoy: Competitive salary up to £85,000 (DOE) + bonus Hybrid working (3 days in London office) International scope, with occasional travel to Belgium and Denmark Opportunity to lead network strategy across multi-site operations

Role Responsibilities: Design, implement, and evolve enterprise network architecture across the UK and Europe. Deliver secure, scalable, and resilient network solutions tailored to business needs. Manage Cisco Meraki and Fortinet solutions across design, deployment, monitoring, and troubleshooting. Lead on network security, including firewalls, segmentation, and IT/OT integration. Collaborate with and manage outsourced network providers. Provide input on Wi-Fi, industrial site networks, and connectivity projects. Ensure compliance with NIS2, ISO 27001, and GDPR. Partner with IT leadership to align network architecture with wider business strategy.

About You: Experienced as a Network Architect, Senior Network Engineer, or similar in a multi-site environment. Strong hands-on expertise in Cisco Meraki and/or Fortinet technologies. Proven track record in network security, firewalls, segmentation, and IT/OT integration. Experience within manufacturing, industrial, or warehousing settings. Strong stakeholder management skills with the ability to bridge technical and business conversations. Familiarity with EU compliance frameworks including ISO 27001 and NIS2. Cisco certifications (CCNP/CCIE, Meraki Solutions Specialist, or Fortinet NSE) highly desirable. Additional security certifications (CISSP, CISM, CompTIA Security+/Network+) an advantage.

Apply today with your most up-to-date CV!

BBBH34502

Global Head of IT. Cyprus, London, Switzerland

Location: one of the Group’s offices (Cyprus - preferred; London, Switzerland)

Reporting to: Group CEO

This is a great opportunity for an experienced IT professional with financial industry experience to join a well-established family office holding in one of its international offices. The objectives of the role are: to establish and develop the Group’s global IT function across 4+ jurisdictions, to implement end-to-end process automation (including the use of AI) across all business units, to ensure uninterrupted and secure operation of all client-facing and internal operational platforms, critical to the wealth and asset management business, to maintain and evolve IT infrastructure in line with regulatory requirements (FCA, CySEC, FINMA, ADGM, etc.) and leading international security standards.

Responsibilities

IT Strategy and Architecture

Develop a unified IT strategy aligned with the Group’s business strategy.

Design and implement the target architecture for ERP, Data Systems, Workflow Automation, and Client Platforms.

Automation and Digitalisation

Build and execute the roadmap for process automation (middle/back office, financial control, reporting, client onboarding).

Introduce AI-based solutions for data processing, transaction monitoring, KYC/AML processes, and client services.

Operational Platforms

Oversee all systems supporting client services and internal operations.

Ensure high availability, resilience, and scalability.

Develop and regularly test Disaster Recovery Plans (DRP) and business continuity frameworks.

Cybersecurity and Compliance

Implement and maintain standards such as ISO27001, SOC2, GDPR, PCI DSS.

Ensure compliance with regulatory requirements (FCA, CySEC, FINMA, ADGM, etc.).

Conduct ongoing risk monitoring and IT audits.

Vendor and Outsourcing Management

Manage Managed Service Providers and external IT partners.

Enforce strict SLA adherence and performance-driven vendor management.

Business Alignment

Integrate IT with the financial function (budgeting, management accounting, consolidation).

Collaborate with Compliance, Risk, and Operations teams to align IT solutions with business requirements.

Provide regular reporting to the CEO and Board of Directors.

Team and Leadership

Build and develop the global IT function (internal team + external partners).

Promote a culture of innovation, cyber hygiene, and accountability.

Ensure high employee engagement and performance.

Key skills

Experience:

10-15+ years in IT, at least 7 years in a senior leadership role.

Mandatory experience in the financial industry (Wealth/Asset Management, banking, fintech).

Proven track record in ERP, Data Systems implementation, process automation, and integration with banking APIs.

Hands-on experience working with regulators and successful IT audit outcomes.

Knowledge and Skills:

Strong understanding of multi-jurisdictional IT systems and regulatory requirements.

Expertise in hybrid infrastructures (cloud + on-premise).

Deep knowledge of international data security and IT governance standards.

Ability to integrate AI solutions into business processes.

Education:

Degree in Computer Science, Information Systems, or related field.

Additional certifications (ITIL, CISSP, PMP, ISO27001 Lead Implementer) are a plus.

Languages:

English - fluent (mandatory).

Russian - a plus.

Key Performance Indicators (KPIs)

Reduction of IT incidents and downtime to the target level (* 100% coverage of critical processes with automation within 2-3 years.

Successful ERP/DS implementation on time and within budget.

Full compliance with all regulators during external audits.

Reduced IT costs while improving efficiency (TCO/ROI).

Technical Lead Asset Management

Technical Lead (Asset Management)

6 Month Contract

London (Hybrid)

Via Umbrella

Our UK leading Life insurance client are looking for a Technical Lead to join their team on an initial 6-month contract.

Key skills/knowledge required:

Deep knowledge of trading workflows, trade lifecycle events, and OMS integration patterns

Understanding of capital markets data flows, trade settlement, reference data, and portfolio management processes

Strong understanding of data modelling, data engineering workflows, and integration with front-office platforms

Awareness of regulatory and compliance considerations in capital markets delivery

Understanding of modern engineering practices, including agile methodologies, DevOps, and cloud-native development

Strong background in asset management or investment banking with hands-on delivery of capital markets solutions

Minimum 3-5 years leading development teams in financial services environments

Experience with OMS platform integration (any major platform - Aladdin, Murex, Charles River, etc.) and understanding of trade lifecycle data flows

Proven experience as a Tech Lead or Senior Engineer leading development teams in financial services

Experience working directly with business and front-office stakeholders

Track record of designing and delivering high-quality, scalable technical solutions

Experience in SQL, Python, Snowflake, and AWS within data-intensive, cloud-based environments

Desirable:

Specific experience with Aladdin, Murex, Charles River or other major OMS platforms

Familiarity with multiple asset classes such as equities, fixed income, and derivatives

Understanding of UK regulatory environment and FCA requirements

Awareness of risk management, portfolio management, and related asset management processes

Experience supporting delivery in a regulated financial services organisation

Background in multi-team delivery environments with complex dependencies

Experience in both hands-on coding and strategic technical leadership

Track record of successful stakeholder management across business and technology functions

If you find this opportunity intriguing and aligning with your skill set, we welcome the submission of your CV without delay.

Carbon60, Lorien & SRG - The Impellam Group STEM Portfolio are acting as an Employment Business in relation to this vacancy.

Staff Engineer - Optimisation and Machine Learning

London (Hybrid - 3 days in office) Permanent

I’m looking to speak to Principal Optimisation Engineers who would be interested in solving complex optimisation that will benefits organisations globally in the Life Sciences industry.

You will be working on problems that actually matter, building systems that help scientists run better experiments and make genuine breakthroughs.

The Company

They are a well-funded Life Sciences automation company that’s scaling fast. They’re using robotics and intelligent software to fundamentally change how scientific labs operate with industrial-scale optimisation.

What You’ll Actually Be Doing

You’ll be the technical lead on some genuinely challenging problems:

Optimisation at scale: Building solvers that can handle real-world constraints using OR-Tools, commercial solvers, or your own custom algorithms when nothing else works

Production ML systems: Taking academic theories and making them work reliably in production environments (Python, Docker, Kubernetes stack)

Pragmatic problem-solving: Knowing when to use exact methods vs when to build heuristics that actually perform at scale

Technical leadership: Shaping the technical direction and mentoring other engineers

What We’re Looking For

Deep optimisation knowledge: You’ve built solvers before and understand the trade-offs between different approaches

Strong Python engineering: Not just scripting - proper software engineering with testing, monitoring, and production deployment experience

ML systems experience: You’ve taken ML models from proof-of-concept to production systems that handle real workloads

Problem-solving mindset: You enjoy the challenge of constraints and finding elegant solutions to complex problems

Any experience in laboratory automation, pharma/biotech, or industrial automation would be beneficial but is not essential. Applicants with strong optimisation backgrounds from supply chain or manufacturing would also be of interest.

Why This Role Works

Real impact: Your optimisation algorithms will directly influence scientific research happening in labs worldwide

Technical depth: Complex problems that require genuine engineering skill, not just following tutorials

Hybrid flexibility: 3 days in London office, 2 days remote

Strong backing: Well-funded with clear growth trajectory

This is the kind of role where your optimisation expertise will be genuinely valued and challenged. If you’re tired of basic ML work and want to solve problems that actually require mathematical sophistication, let’s talk.

APPLY TODAY for immediate consideration.

Salesforce Architect

Opus Recruitment Solutions Ltd

We’re on the lookout for a contract Salesforce Architect for an initial 6 months to work for an International Charity. They have a couple implementations lined up (NFP Cloud and Data Cloud), and are looking to get someone in to work alongside their SI in designing their 2025 roadmap. Ideally you would have experience in the following:- Salesforce Architecture (min 5 years)- NFP Cloud- Data CloudDesireable:- NPSPMy client are also on the lookout for Salesforce developers, so if you’re open to these sort of roles, or know someone who is please let me know.

Salesforce Developer nCino 6 Months £500 - £600 Outside IR35 Remote

Opus Recruitment Solutions Ltd

Salesforce Developer (nCino) 6 Months £500 - £600 Outside IR35 RemoteWe’re seeking a Salesforce Developer for a 6-month contract with the likelihood of extension. This role is determined as Outside IR35 paying between £500 - £600 per day. The ideal candidate will have previous experience in the finance sectors and have an extensive background working with Sales and Service Cloud.Key Requirements• Expert in Salesforce Sales Cloud and Service Cloud architecture• Skilled in Apex, Visualforce, and Lightning component development• Hands-on experience with nCino preferably in conjunction with Salesforce platform• Strong background in Salesforce integration and customisation techniques• Finance sector experience is highly advantageousWhat you need to do nowIf this Salesforce Developer role is a good fit for you and would like to know more then please apply with your most up to date CV.Salesforce Developer (nCino) 6 Months £500 - £600 Outside IR35 Remote

Senior ML Engineer £750/day Remote 6 Months+ UK

We’re hiring a very senior Machine Learning Engineer to lead model optimization for a cutting-edge AI hardware platform built for high-performance edge inference.

Backed by $200M+ in funding, this stealth-mode startup is reimagining how AI runs in real-time; on-device, energy-efficient, and cloud-free.

What You’ll Do

Optimize and deploy deep learning models on custom accelerators (e.g. Digital In-Memory Computing)

Apply advanced techniques: quantization, pruning, compression

Work across frameworks (PyTorch, TensorFlow, ONNX, OpenVINO, TVM)

Collaborate with hardware, compiler, and embedded teams

Benchmark and validate performance in real-world edge scenarios (CV, robotics, industrial AI)

What You Bring

7+ years in ML engineering, with deep expertise in model optimization for edge or custom silicon

Strong knowledge of neural networks, hardware-aware inference, and deployment pipelines

Hands-on with embedded inference toolchains and performance profiling

Python, C++, and a mindset for getting things running fast and efficiently

Senior ML Engineer £750/day Remote 6 Months+ UK

RSG Plc is acting as an Employment Business in relation to this vacancy.

Senior Software Engineer

Looking for a Senior Software Engineer with strong communicational skills, with opportunity to become a lead in the future.

In person - meeting in London once a month tops. So you can be based anywhere in the UK.

HIGHLY advanced English.

Advanced skills in Next.js, React,

GraphQL, Supabase, Vercel, and Google Cloud Platform.

Talamo is a fast-growing ed-tech start-up helping schools identify and support neurodiverse students early. Launched in 2024 with a dyslexia test, it now works with 400+ schools and has completed thousands of tests.

The role highlights for candidates:

Hands-on work: building new features, improving performance, delivering on the product roadmap

Direct impact on architecture and long-term technical strategy

Opportunity to help recruit, mentor, and shape the future engineering team

Work on meaningful products that transform how schools support students

Your skills

Hands-on and adaptable: You love being in the thick of development

and can shift gears quickly when needed.

Adaptability is key.

You should value best-practices that ensure

quality output - things like continuous deployment, testing, code

reviews, pair programming and retros.

You have an interest in management,

and have had some experience leading a squad or small team

previously.

Open to AI: You understand the practical applications of LLMs (not

just hype) and see how AI can improve personalisation in technology.

Understand how to increase

productivity without sacrificing quality.

IS IT YOU?

We warmly invite you to apply!

Java Developer - ION / Credit Bonds

Java Developer - ION/Credit Bonds - sought by investment bank based in London - Contract - Hybrid

inside IR35 - umbrella

Details:

Hardworking, dedicated, detail oriented, focused on quality and a team player, with effective verbal and written communications.

7+ years of hands-on coding in server side Java with strong emphasis on Concurrency, Collections API, Messaging and Event processing across multiple streams

5+ years of coding experience in multi-cast messaging (Solace / RV)

5+ years of coding with relational DB (SQL Server, Sybase, Oracle)

5+ years of technical design of low latency trading application services

3+ years of build tools (Maven, Jenkins, Nexus)

Coding with FIX protocol, ION API is a strong plus

5+ years of design and coding experience of trading components including Container based solutions (for pricing, quoting, offering and hedging), Execution, Order Management, Smart Order Routing and state machine for processing electronic inquiries

Please apply within for further details - Matt Holmes - Harvey Nash

SC Cleared Lead Technical Architect

Opus Recruitment Solutions Ltd

Role: Lead Tech ArchitectIR35: OutsideSC: Yes Start: 21/10 3 Months contract Rate: £600 Requirements SC Clearance Technical Architect from a engineering backgroundExperience in being in a 2nd line support role and help trouble shoot with the team Skillset:Databricks Alterna AWS Cloud Terraform If interested please send over your CV

Infrastructure Engineer Senior 12 Month FTC

Infrastructure Engineer 12 Month FTC £70,000 Flexible Hybrid (London) Microsoft 365 Networking

We’re looking for a senior Infrastructure & EUC Engineer to act as the right hand to our Infrastructure Manager. This is a visible, strategic role, you’ll not only keep our core IT services resilient but also shape how our modern workplace evolves across Microsoft 365, Azure, and Cisco Meraki.

You’ll deputise in the manager’s absence, own supplier relationships, and lead national infrastructure projects, while still keeping hands-on with the tech.

What you’ll do

Act as deputy to the Infrastructure Manager overseeing infrastructure projects and supplier relationships.

Design, deploy, and maintain secure, scalable infrastructure (on-prem & Azure).

Own Microsoft 365 services (Intune, Entra ID, Purview, Teams, SharePoint).

Drive resilience, disaster recovery, backup, high-availability design.

Provide 3rd line escalation for complex infra/EUC issues.

Lead national projects, e.g., Meraki rollouts, Windows 11 migration, Intune uplift.

Produce technical documentation and support ISO 27001 compliance.

Share knowledge across IT, bridging service desk and technical teams.

The tech you’ll touch

Microsoft 365: Intune, Entra ID, Teams, SharePoint, Purview

Microsoft Azure services

Cisco Meraki networking

Scripting/automation (PowerShell, IaC)

What we’re looking for

Significant hands-on EUC & infrastructure experience, with strategic exposure.

Confidence managing suppliers and engaging stakeholders.

Track record leading projects (migrations, rollouts, security uplift).

Knowledge of data governance and compliance frameworks.

Ability to step into management responsibilities when required.

Why this role?

This is the step up for an experienced engineer who wants strategic input and leadership exposure while staying technical. You’ll directly shape IT delivery, deputise for management, and gain visibility across the business.

RSG Plc is acting as an Employment Business in relation to this vacancy.

Security Sytems Engineer

Morgan McKinley is looking for an experienced Installation Engineer - Security Systems Engineer to work for a great, well established business who services clients in and around London and the South East. The Engineer will be supporting with installation projects - commercial and some residential security systems, access control, CCTV and intruder alarms, utilising your existing skills by installing and testing products across all security disciplines.

Salary basic: £43-47K dependent on experience + company van and tools

Security Engineer duties:

Installation, maintenance and servicing of alarm systems, CCTV, door entry, intercom etc.

Fault-finding and diagnostics

Accurate completion of job reports and compliance paperwork

Liaising with the office with updates on jobs, working with project managers, customers and site managers

Delivering excellent on-site client / customer service

Skills and experience:

Proven experience working in a similar Security Systems / Installation Engineering type role. Ideally have experience of using / installing security systems such as; hikvision, texecom, pyronic, comelit etc

Experience in dealing with high-end clients within a residential setting and larger commerical type projects

Full UK driving licence and ECS or CSCS card (preferred)

ABAP Developer - Break out of the SAP Box

ABAP Developer ? AI / Startup Role

ABAP Developer - Break Out of the SAP Box

Most ABAP roles keep you maintaining the same old codebase. This one lets you take your SAP expertise and plug it straight into a modern AI platform that’s transforming how global enterprises run their tech.

This London startup is tackling a multi-billion-dollar problem: helping the world’s biggest companies turn ERP chaos into clarity. Their AI engine saves millions in IT costs, accelerates project timelines by months, and modernises decades-old systems in ways that have never been done before.

This is a role for those who live and breathe tech. Hours run 9am-7pm, and the expectation is clear: hard work and full commitment are what make the difference here.

? What you’ll do

Write and optimise ABAP while shaping how AI agents interpret SAP.

Go beyond SAP, contribute to backend services, APIs, and infrastructure.

Mentor engineers who are brilliant in other stacks but new to SAP.

Influence integration design for some of the world’s largest enterprises.

Help build a product that scales globally, fast.

? What we’re looking for

2-3+ years’ SAP/ABAP development experience.

Hunger to dive into AI, automation, and modern engineering.

Pragmatic, resourceful, and comfortable with ambiguity.

Someone who thrives in intensity and wants to build something big.

A true team player who enjoys startup pace and in-person collaboration.

Tech stack includes

SAP/ABAP + ERP frameworks.

TypeScript + Kotlin across the backend.

LLM/AI workflows over large datasets.

Containerised local-first development, Git deploys, Terraform.

? Perks

Competitive salary + top-tier equity. ? Breakfast + dinner in the office daily. ? Legendary snack cupboard. Private health insurance (dental + optical included). Monthly wellbeing budget. ? Regular socials + team offsites. Take-what-you-need holiday.

London (office-based by default).

If you’re an ABAP dev ready to leap into AI, commit fully, and work at startup pace, this is your shot.

M365 Technical Architect

We’re looking for an experienced M365 Technical Architect to join our growing team. In this role, you’ll play a key part in delivering and implementing innovative Microsoft 365, CoPilot, and Intune solutions for a wide range of clients. You’ll collaborate closely with technical architects and consultants to guarantee delivery excellence, all while mentoring others and shaping our proposition strategy.

You’ll be joining a supportive and collaborative team where innovation, growth and quality delivery are at the heart of everything we do. You’ll also play a crucial role in pre-sales activity, client engagement, and acting as Technical Design Authority on key projects.

We can offer great career progression opportunities, ability to be based anywhere across the UK, benefits which you can flex to meet your needs and training and development opportunities.

What you’ll be doing:

Designing and delivering end-to-end M365 / CoPilot / Intune solutions based on client requirements.

Leading workshops, demonstrations, and webinars to showcase our offerings.

Acting as Technical Design Authority and providing governance across project delivery.

Mentoring junior team members and supporting capability development.

Engaging in pre-sales, proposals and RFI contributions with sales and solution teams.

Driving innovation by developing new IP and contributing to go-to-market initiatives.

What you’ll bring:

Strong experience with Microsoft 365, CoPilot, and Intune deployment and migration.

Deep knowledge of Microsoft productivity and security solutions.

Expertise in identity and access management, including Microsoft security tools.

Familiarity with CoPilot capabilities and its impact on user productivity.

Excellent communication and leadership skills.

Proven experience facilitating complex customer workshops and co-design sessions.

It would be great if you had:

Microsoft Cyber Security Expert or Identity & Access Management certifications.

M365 Endpoint or Collaboration certification.

Knowledge of Azure security services.

Experience with M365 Security & Compliance and Apps Productivity Suite including SharePoint.

If you are interested in this role but not sure if your skills and experience are exactly what we’re looking for, please do apply, we’d love to hear from you!

Employment Type: Full-time Permanent

Location: UK Wide

Security Clearance Level: SC

Internal Recruiter: Annecia

Salary: dependent on experience

Benefits: £5,400 car allowance, 25 days annual leave with the option to buy additional days, private medical, life assurance, pension, and generous flexible benefits fund

Although this role is advertised as full-time, we believe that flexibility at work can promote work/life balance, increase your motivation, reduce stress and improves performance and productivity. We support different ways of working and can offer a range of flexible working arrangements. So, if you’re interested and need to work flexibly, we encourage you to apply and talk to us about what might be possible.

Loved reading about this job and want to know more about us?

With a long history of delivering transformation, we’ve developed a market-leading partnership ecosystem to provide business services of the future and shape valuable, positive outcomes for communities. We empower our clients by providing innovative solutions and commercial models that help them meet their business needs, drive operational efficiencies, and deliver impactful value creation. We remain committed to values of excellence, empathy and respect to produce transformative outcomes in business processing - creating value for all.

We embrace difference as a source of creativity, innovation and competitive advantage and are striving to become a more diverse organisation. We welcome applications from people with a diverse variety of backgrounds and identities. We are committed to equality of opportunity for all and do not discriminate on the basis of race, religion, colour, gender, age, disability, sexual orientation or marital status. We have partnered with Vercida, the UK’s largest diversity and inclusion focused careers site, where all our vacancies are available in an accessible format.

If you require any adjustments to the recruitment process, to enable you to perform to the best of your ability, please let us know when completing your application. We participate in the Disability Confident scheme and are committed to offering an interview to any candidate with a disability, who meets the minimum criteria for the role. If you believe this could apply to you, please let us know when completing your application.

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Frequently asked questions

What is a Technical Architect?

A Technical Architect is a senior IT professional responsible for designing and overseeing the implementation of technical solutions, ensuring they align with business goals and technical requirements.

What skills are required for Technical Architect jobs in London?

Key skills include expertise in software architecture, cloud technologies, system integration, strong communication abilities, and experience with platforms like AWS, Azure, or Google Cloud.

What is the typical salary range for Technical Architects in London?

Salaries typically range from £70,000 to £110,000 per year, depending on experience, sector, and specific company requirements.

How can I apply for Technical Architect jobs in London on Haystack?

You can browse available Technical Architect positions on our website, create a profile, upload your CV, and apply directly through the job listings.

Do I need specific certifications to become a Technical Architect in London?

While not always mandatory, certifications such as TOGAF, AWS Certified Solutions Architect, or Microsoft Azure certifications can enhance your profile and improve job prospects.

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