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286 jobs found in London

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Contract Spy
Apr 15, 2026
Duration not stated
Senior Java Developer at Pixelcode Technologies Limited, Hammersmith Broadway, £400-£500 per day
£400 - £500 per day
Contract Spy Hammersmith Broadway, London W6, UK
We are looking for Senior Java Developers to join on a contract basis (Inside IR35) . The ideal candidate will have experience building scalable microservices, working with event-driven systems, and deploying applications using containerized and cloud technologies. You will contribute to developing reliable backend services and help modernize legacy systems into cloud-ready architectures. Key Skills & Responsibilities Strong experience with Java (latest versions) and Spring Boot Experience designing and developing Microservices architectures Solid understanding of backend design patterns and best practices Experience working with SQL databases, particularly PostgreSQL Knowledge of Object-Oriented programming principles (OCP) Experience with event streaming platforms such as Kafka or RabbitMQ Hands-on experience with Docker and Kubernetes Experience working with AWS or other cloud platforms Ability to build scalable, reliable, and...
Contract Spy
Apr 08, 2026
Duration not stated
Senior Java Developer at Pixelcode Technologies Limited, Hammersmith Broadway, £400-£500 per day
£400 - £500 per day
Contract Spy Hammersmith Broadway, London W6, UK
We are looking for Senior Java Developers to join on a contract basis (Inside IR35) . The ideal candidate will have experience building scalable microservices, working with event-driven systems, and deploying applications using containerized and cloud technologies. You will contribute to developing reliable backend services and help modernize legacy systems into cloud-ready architectures. Key Skills & Responsibilities Strong experience with Java (latest versions) and Spring Boot Experience designing and developing Microservices architectures Solid understanding of backend design patterns and best practices Experience working with SQL databases, particularly PostgreSQL Knowledge of Object-Oriented programming principles (OCP) Experience with event streaming platforms such as Kafka or RabbitMQ Hands-on experience with Docker and Kubernetes Experience working with AWS or other cloud platforms Ability to build scalable, reliable, and...
Contract Spy
Mar 30, 2026
Duration not stated
Senior Java Developer at Pixelcode Technologies Limited, Hammersmith Broadway, £400-£500 per day
£400 - £500 per day
Contract Spy Hammersmith Broadway, London W6, UK
We are looking for Senior Java Developers to join on a contract basis (Inside IR35) . The ideal candidate will have experience building scalable microservices, working with event-driven systems, and deploying applications using containerized and cloud technologies. You will contribute to developing reliable backend services and help modernize legacy systems into cloud-ready architectures. Key Skills & Responsibilities Strong experience with Java (latest versions) and Spring Boot Experience designing and developing Microservices architectures Solid understanding of backend design patterns and best practices Experience working with SQL databases, particularly PostgreSQL Knowledge of Object-Oriented programming principles (OCP) Experience with event streaming platforms such as Kafka or RabbitMQ Hands-on experience with Docker and Kubernetes Experience working with AWS or other cloud platforms Ability to build scalable, reliable, and...
Contract Spy
Mar 23, 2026
Duration not stated
Senior Java Developer at Pixelcode Technologies Limited, Hammersmith Broadway, £400-£500 per day
£400 - £500 per day
Contract Spy Hammersmith Broadway, London W6, UK
We are looking for Senior Java Developers to join on a contract basis (Inside IR35) . The ideal candidate will have experience building scalable microservices, working with event-driven systems, and deploying applications using containerized and cloud technologies. You will contribute to developing reliable backend services and help modernize legacy systems into cloud-ready architectures. Key Skills & Responsibilities Strong experience with Java (latest versions) and Spring Boot Experience designing and developing Microservices architectures Solid understanding of backend design patterns and best practices Experience working with SQL databases, particularly PostgreSQL Knowledge of Object-Oriented programming principles (OCP) Experience with event streaming platforms such as Kafka or RabbitMQ Hands-on experience with Docker and Kubernetes Experience working with AWS or other cloud platforms Ability to build scalable, reliable, and...
Contract Spy
Apr 09, 2026
Duration not stated
Quality Assurance Engineer at Mindera, London Paddington, £Contract Rate (Outside IR35)
Contract Spy Paddington, London, UK
We are seeking an experienced QAE Engineer / Senior Test Manager to join the Move Programme team, playing a key role in shaping and delivering the testing strategy across our Automated Warehouse programme. This role will focus on defining and implementing a robust end-to-end testing strategy across a complex ecosystem with multiple interdependent systems and teams. The successful candidate will ensure quality across programme delivery while driving improvements in our testing maturity. A key part of the role will be leading the transition from manual testing toward a scalable automated testing approach across the wider Move portfolio. You will also manage and guide a small team of 3 -4 offshore QA engineers, ensuring alignment with programme priorities and quality standards.   Please note: this is an initial six month contract that sits outside IR35. The role requires you to work onsite in Paddington, London, 3 days a week.   Key Responsibilities...
Contract Spy
Apr 16, 2026
Duration not stated
Unity Developer at Polar Media, London, £200-£500 per day
£200 - £500 per day
Contract Spy London SW12 0NE, UK
Unity Developer/ Unreal Developer/ XR Developer Polar Media are seeking creative, passionate and knowledgable XR Developers to join the freelancer pool for our interactive depeartment. We are looking for individuals who have an interest in science and technology and can think methodically and laterally in order to integrate creative ideas. At Polar Media, the interactive department works on severals projects at a time with a focus on science and technology brands. We engage audiences with experiences they'll remember through an amalgamation of physical inputs, graphical displays and networking of data sources. In other words, we use any and all methods available to us to achieve the best results for our clients and ultimately give any experience we produce real impact. Being in this freelancer pool does not gaurantee work, but it will be the first location we go to fill roles. We currently work heavily with Unity (but are looking to develop our Unreal pipeline)...
Contract Spy
Apr 10, 2026
Duration not stated
Senior Security Architect at ByDesign Secure, London SW1A, £725 per day
£725 per day
Contract Spy London SW1A, UK
Opening: Join the Mission At ByDesign Secure, we believe that world-class security shouldn't be an afterthought—it should be the foundation. We are an independent, outputs-based consultancy dedicated to solving the most complex data assurance challenges in the UK public sector. Currently, we working on a landmark transformation of a cross-government secure IT system. This is an exciting opportunity to help architect a private cloud environment from the ground up and modernize the end-user services that power national decision-making. We don't believe in "billing by the hour" or rigid hierarchies; we are a lean, expert team focused on delivering high-impact technical outcomes. If you are a self-starter who thrives on autonomy and wants to see your engineering or architectural decisions shape the future of sovereign security, we want to talk to you. Principle Security Architect As a Senior Security Architect for ByDesign you will be working on high profile large scale...
Contract Spy
Apr 10, 2026
Duration not stated
Technical Product Manager at ByDesign Secure, London SW1A, £550-£600 per day
£550 - £600 per day
Contract Spy London SW1A, UK
Opening: Join the Mission At ByDesign Secure, we believe that world-class security shouldn't be an afterthought—it should be the foundation. We are an independent, outputs-based consultancy dedicated to solving the most complex data assurance challenges in the UK public sector. Currently, we working on a landmark transformation of a cross-government secure IT system. This is an exciting opportunity to help architect a private cloud environment from the ground up and modernize the end-user services that power national decision-making. We don't believe in "billing by the hour" or rigid hierarchies; we are a lean, expert team focused on delivering high-impact technical outcomes. If you are a self-starter who thrives on autonomy and wants to see your engineering or architectural decisions shape the future of sovereign security, we want to talk to you. Technical Product Manager Reference ID: BDS-TPM1 Are you a Technical Product Manager with a passion for delivering...
Contract Spy
Apr 10, 2026
Duration not stated
Cloud DevOps Engineer (GDC, IaC, CI/CD, SRE) – SC Eligible at ByDesign Secure, London SW1A, £600 per day
£600 per day
Contract Spy London SW1A, UK
This role is delivered within secure environments. Candidates must be eligible for UK SC clearance (requiring 5 years UK residency). Opening: Join the Mission At ByDesign Secure, we believe that world-class security shouldn't be an afterthought—it should be the foundation. We are an independent, outputs-based consultancy dedicated to solving the most complex data assurance challenges in the UK public sector. Currently, we working on a landmark transformation of a cross-government secure IT system. This is an exciting opportunity to help architect a private cloud environment from the ground up and modernize the end-user services that power national decision-making. We don't believe in "billing by the hour" or rigid hierarchies; we are a lean, expert team focused on delivering high-impact technical outcomes. If you are a self-starter who thrives on autonomy and wants to see your engineering or architectural decisions shape the future of sovereign security, we want to...
Contract Spy
Apr 10, 2026
Duration not stated
Cloud Network Engineer (GDC, VPC, Routing & Hybrid Connectivity) – SC Eligible at ByDesign Secure, London SW1A, £550 per day
£550 per day
Contract Spy London SW1A, UK
Cloud Network Engineer (GDC, VPC, Routing & Hybrid Connectivity) – SC Eligible – Government Projects This role is delivered within secure environments. Candidates must be eligible for UK SC clearance (requiring 5 years UK residency). Opening: Join the Mission At ByDesign Secure, we believe that world-class security shouldn't be an afterthought—it should be the foundation. We are an independent, outputs-based consultancy dedicated to solving the most complex data assurance challenges in the UK public sector. Currently, we working on a landmark transformation of a cross-government secure IT system. This is an exciting opportunity to help architect a private cloud environment from the ground up and modernize the end-user services that power national decision-making. We don't believe in "billing by the hour" or rigid hierarchies; we are a lean, expert team focused on delivering high-impact technical outcomes. If you are a self-starter who thrives on...
Contract Spy
Apr 10, 2026
Duration not stated
Cloud Security Engineer (GDC, Identity & Access, Encryption) – SC Eligible at ByDesign Secure, London SW1A, £650 per day
£650 per day
Contract Spy London SW1A, UK
This role is delivered within secure environments. Candidates must be eligible for UK SC clearance ( requiring 5 years UK residency). Opening: Join the Mission At ByDesign Secure, we believe that world-class security shouldn't be an afterthought—it should be the foundation. We are an independent, outputs-based consultancy dedicated to solving the most complex data assurance challenges in the UK public sector. Currently, we working on a landmark transformation of a cross-government secure IT system. This is an exciting opportunity to help architect a private cloud environment from the ground up and modernize the end-user services that power national decision-making. We don't believe in "billing by the hour" or rigid hierarchies; we are a lean, expert team focused on delivering high-impact technical outcomes. If you are a self-starter who thrives on autonomy and wants to see your engineering or architectural decisions shape the future of sovereign security, we want to...
Contract Spy
Apr 17, 2026
Duration not stated
Swaps Developer - C++, Java etc at Jefferies, London Area, £Contract Rate
Contract Spy London Area, United Kingdom
Role An opportunity exists for a technically oriented individual to join the Equity technology team in London. The role will focus on developing & maintaining our Equity Swaps platform – supporting front and middle office users in multiple time zones. The successful candidate will collaborate with business partners, analysts and stakeholders across the organisation to deliver the strategic book of work alongside supporting the day-to-day operations. Key Responsibilities Provide leadership as required to ensure successful delivery of a project. Owning specific projects or issues from start to finish. Documenting. Working with global colleagues, stakeholders and management to ensure appropriate prioritisation. Write high quality code, unit testing, working with QA, and overseeing the production release cycle. Trade support queries (2nd line)   Person Specification The following skills and experience are required...
Contract Spy
Apr 17, 2026
Duration not stated
Solution Architect - SC at Scrumconnect, London, £650 per day (Outside IR35)
£650 per day
Contract Spy London, UK
Date Opened 16/04/2026 Job Type Contract Work Experience 5+ years Industry IT Services Salary 650 Outside IR35 About Scrumconnect Scrumconnect is a leading digital transformation consultancy delivering user-centred, innovative solutions across the UK public and private sectors. We specialise in helping organisations design, build, and scale digital services that make a real impact. Our teams work closely with clients to solve complex challenges using modern technologies, agile methodologies, and a strong focus on user needs.   About the role You will act as an independent technical assessor and solution architect, reviewing digital products end-to-end — from codebase to architecture — and producing detailed, structured assessment reports that give stakeholders a clear, honest picture of where a product stands in 2026. This is not a delivery role. You will bring a sharp, critical technical eye — able to...
Contract Spy
Apr 17, 2026
Duration not stated
Product Manager – Golden Phoenix Data & AI Foundations at Rainiersoft Consulting, London, £400-£450 per day
£400 - £450 per day
Contract Spy London, UK
Job Title: Product Manager – Golden Phoenix Data & AI Foundations Department: Technology Digital Delivery – Supply Trading & Shipping Contract: Inside IR35 Domain (Finance / Utilities.. etc): Finance Base location: London Hybrid work options (number of days on site) : 4 Days onsite needed at London office Role Overview: We are seeking a Product Manager to lead the strategy, development, and scaling of three foundational product areas within the Data & AI portfolio: Unstructured Data Service Variable Latency Streaming Core AI Components These capabilities form the backbone of next‑generation AI, and business intelligence across bp’s Supply, Trading & Shipping organisation. The Product Manager will define product strategy, prioritise outcomes, and work closely with delivery leads, engineers, data scientists, other delivery teams, and business stakeholders to deliver scalable,...
Contract Spy
Apr 17, 2026
Duration not stated
Software Engineer - Contract at ONMO, London Area, £Contract Rate
Contract Spy London Area, United Kingdom
ABOUT THE COMPANY Onmo believes that everyone has the right to access, understand and manage their money with confidence. Our ambition is to improve lives by providing better clarity, intelligence and technology to empower every individual in making the smartest financial decisions. We may be young but we have an incredible team in place and big ambitions for the years ahead. We design our products to help demystify money matters wherever possible, providing customers with more financial control and flexibility in their lives. This helps them get more from what they have, or with smart decisions, make more of the same. It also means people spend less time with the negative aspects of money and more on the positive - enjoying what the world has to offer. ABOUT THE ROLE Tech Stack Backend : AWS Serverless Service, including Lambda, API Gateway, DynamoDB, S3, SNS, SQS, EventBridge, Kinesis, Node.js, YAML Frontend : React / Next.js, React Native Programming...
Contract Spy
Apr 17, 2026
Duration not stated
Senior Full Stack Engineer at Conquer AI, London, £Contract Rate (Outside IR35)
Contract Spy London Area, United Kingdom
Senior Full Stack Engineer ( Finance Experience Required )   London | Contract | Outside IR35 | Conquer AI   We’re hiring a Senior Full Stack Engineer at Conquer AI.   This is a hands-on engineering role for someone who can work across the stack, but with real strength in backend systems, data, and platform architecture. You’ll be joining us to help deliver a high-impact project in a complex, commercially critical environment.   This is not a pure frontend role. This is not a role for someone who wants to stay at the architecture-diagram level. We’re looking for someone who can take messy business processes, turn them into clear technical systems, and ship production-grade software.   What you’ll do Build and evolve workflow platforms that support intake, approvals, pipeline management, and execution handoffs Design and deliver APIs, services, and integrations across internal...
Contract Spy
Apr 17, 2026
Duration not stated
SME AI & Automation Partner at bstarOne, London Area, £Contract Rate
Contract Spy London Area, United Kingdom
The Mission: > bstarOne is deploying the world’s first unified AI-Native Business Operating System (u-AI-BOS) specifically for the SME sector. We are opening our Vanguard Partner Program for elite operators to lead these deployments.   The Infrastructure: > You will be trained to deploy and oversee our 6-module intelligence stack: Strategic Briefing, StartPro, CreativePro, LeadSalesPro, CarePro, and bstarAI. This is a Business-in-a-Box for the modern consultant.   The Opportunity:   Performance-Based Revenue: Retain 100% of your setup/consulting fees + competitive recurring performance incentives. Zero Headcount Operations: Leverage our autonomous logic layers to manage a massive portfolio of clients with minimal manual oversight. Sovereign Growth: This is a partnership, not a job. You own the client relationships and the strategic deployment.   Selection Process: Qualified candidates will...
Contract Spy
Apr 17, 2026
Duration not stated
Senior KDB+ Developer at Synechron, London Area, £Contract Rate
Contract Spy London Area, United Kingdom
About Synechron: Synechron is a leading digital transformation consulting firm dedicated to delivering innovative technology solutions within banking, financial services, and insurance. We thrive on engineering excellence, collaboration, and a passion for cutting-edge technologies. Role Overview We are seeking an experienced Senior KDB+ Developer to design, develop, and optimize high performance data platforms built on kdb+. The ideal candidate will have deep expertise in kdb+ tick architecture, performance tuning at scale, and close collaboration with business stakeholders—particularly within Risk functions—to deliver robust, efficient, and maintainable solutions. This role also includes technical responsibilities, mentoring junior developers and promoting best practices across the team. Job Location: London (Hybrid - 3 days in the office) Key Responsibilities Design, develop, and maintain kdb+ tick systems, with a strong understanding of data...
Contract Spy
Apr 17, 2026
Duration not stated
Project Manager - Finance Transformation & Business Readiness at Emagine Consulting, London, £600-£700 per day
£600 - £700 per day
Contract Spy Remote (London, UK)
We are seeking an experienced Project Manager to support a large-scale finance transformation and operational separation initiative within a regulated financial services environment. Project Manager - Finance Transformation & Business Readiness London (Remote) £600 - £700 emagine is a high-end professional services consultancy and solutions firm Specialising in providing business and technology services to the financial services sector, we power progress, solve challenges and deliver real results through tailored high-end consulting services and solutions. We have created a culture of openness and integrity by building genuine and strong relationships and partnerships, enabling us to be uncompromising in our dedication in delivering the optimal service for our clients. Our commitment is not just towards our clients but we aim to foster a positive and equitable working environment with our consultants and colleagues which stems from our core values:...
Contract Spy
Apr 17, 2026
Duration not stated
Senior ERP Transformation Business Analyst at Handelsbanken Plc, London, £Competitive Day Rate
Contract Spy London, UK
Senior ERP Transformation Business Analyst (day rate contract) { ʺdescription ʺ: ʺ Job Introduction The Senior Finance Transformation Business Analyst 's role will be responsible for working with both Business and IT to elicit requirements/user stories and to recommend solutions that will help deliver system enhancements and improved business performance, whilst ensuring regulatory compliance. Main Responsibilities • Leadership role in the e2e lifecycle delivery of an ERP system in a Financial Institution • Decomposition of as-is data elements used in Financial reporting and working with technical data modellers to construct target data models • Preparation for and leading participation in Discovery phase with ERP vendor to turn Business Requirements and TOM principles into implementable functional design • Requirements engineering: elicit, analyse and validate stakeholder requirements, business requirements and solution requirements (functional and...
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