281 jobs found in London

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...

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...

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...

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...

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)...

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...

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...

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...

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...

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...

Must have skills: Demonstrable experience with Solidity. Strong understanding of blockchain security practices and potential vulnerabilities. Proficiency in Hardhat and Foundry. Experience with Solidity security testing tools like Slither, Mythril, Echidna Practical experience with scripting languages like Javascript or Typescript. Ability to craft unit, integration, fork, and invariant tests, ensuring code longevity. Demonstrable aptitude for best development practices, data structures, algorithms, and methodologies. Bachelor's degree in Computer Science, Engineering, or a related STEM discipline. Excellent debugging and troubleshooting skills. Strong written and verbal communication skills. Self-motivated with the ability to work in a fast-paced, evolving environment. Proficient communication skills in English. Development background in sectors such as banking, finance, or trading, paired with a comprehensive grasp of financial...

Role Overview We are looking for a Senior Delphi Developer with deep expertise in Delphi 10.4 or later , strong understanding of software development life cycle (SDLC) , and hands-on experience in Oracle PL/SQL and RDBMS . The ideal candidate will be responsible for designing, developing, and maintaining enterprise-grade business applications, while also contributing to build automation and deployment processes using tools such as TeamCity and Octopus . This role requires excellent debugging skills, experience in developing custom controls, and collaboration with cross-functional teams to deliver robust and scalable software solutions. Experience: 10–14 years Key Responsibilities Design, develop, and maintain business applications using Delphi 10.4 or newer versions . Participate in the full Software Development Life Cycle (SDLC) — from requirements gathering to deployment and support. Configure and maintain automated build and...

Job Reference hbuk/TP/158/2489 Contract Type Day Rate Contractor Closing Date 20 May, 2026 Job Category Tech, Data and Digital Business Unit Systems and Infrastructure (UKT) Location London, United Kingdom Posted on 20 April, 2026   We are looking for a Data Engineer to design, build and maintain a scalable on-premise data warehouse using modern data engineering practices. You will work with Python, Apache Airflow and DBT in a Unix/Linux environment to develop robust data pipelines, transform data into curated models and support analytics and reporting. This role requires someone comfortable working in a non-cloud (on-prem) environment, with a strong ownership of infrastructure-aware data solutions. Main Responsibilities  Design and build end-to-end ETL/ELT pipelines using Python and SQL. Develop and Orchestrate workflows using Apache Airflow. Implement transformation logic and data models using dbt...

Data Architect - Outside IR35 "Ready to lead transformation? Join our team that is reshaping data use, reducing complexity, and improving systems. The role involves being a key contributor within a GDS-style Alpha team committed to transforming the use of data for informed decision-making and operational efficiency. Situated within a broader transformation programme, the focus is on reshaping systems and addressing key areas identified in a recent Discovery phase.   Technical requirements: ✔️ Azure/AWS Snowflake/Data Bricks Event Driven Architecture C#/Node/Python Power BI About us 🔓 esynergy is a technology consultancy and we build products, platforms and services to accelerate value for our clients. We drive measurable impact that is tightly aligned to our clients’ business objectives. Put in practice that means high transparency, metric-driven reporting, and incremental handovers and a...

Solution Architect (Contract) Who are we?   Toyota Connected Europe wants to create a better world through connected mobility for all. We are a new company created to bring big data and a customer focus into all aspects of the mobility experience, so everyone’s experience is more personal, convenient, fun and safe. We create and enable technologies to delight and simplify the lives of everyone who use our products and empower them to think of and use our services in new ways.   You will be joining us at the beginning of Toyota Connected Europe’s journey of building our team and products. We are building teams to inspire, innovate and build technologies and products that are used by millions of people from all walks of life. This is an opportunity to have an immediate impact and voice: what you create today, you will see being used tomorrow.   What is the role? Toyota has a multitude of connected car systems...

KDB+ CONTRACTOR REFERENCE: REF178E >DEPARTMENT: Time Series Data >LOCATION: London Office >CONTRACT TYPE: Contract >EXPERIENCE: Mid-Senior Level >INDUSTRY: Information Technology And Services >CLOSING DATE: 01/06/2026 What You Bring Deep expertise in hands-on kdb+/q development and time-series data solutions Proven experience designing and implementing kdb+ architectures and scaling kdb+ systems in production. Strong background in Unix/Linux environments and scripting. Demonstrated technical leadership and decision-making in fast-paced projects. Excellent communication skills—you can explain complex systems to both technical and non-technical stakeholders. Experience in capital markets or investment banking—you understand the domain and its demands. A passion for clean, performant code and continuous...

Date Opened 20/04/2026 Job Type Contract 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. Clearance: SC clearance required (or willingness to obtain)   Role Description   The lead product manager will provide strategic leadership across multiple complex Digital products, ensuring alignment with the Client’s transformation objectives to deliver user-centred, secure and scalable digital services. Operating within a multidisciplinary agile environment, the role will own product vision, roadmap and value realisation across services spanning discovery, alpha, beta,...

Date Opened 21/04/2026 Job Type Contract About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of more than  40 million UK citizens . We are committed to  user-centred design ,  agile delivery , and driving innovation in digital services that truly matter. Role Overview We are seeking an experienced  Data Engineer  to design, build, and maintain data products and a modern  Strategic Data Platform . You will work within multi-functional  Agile delivery teams , ensuring operational stability, ongoing support, and continuous enhancement of data solutions. This role is ideal for someone with strong  Azure data engineering experience , excellent  SQL and Python  capability, and a passion for building  scalable, reliable...

SummaryOur vision in the Corporate Operations Group division is to innovate and empower for a better future, this means delivering intuitive technology with people in mind. Our DNA is customer engagement, findings ways to innovate and do things differently, connecting data with engineering, driving digitalisation and providing reliable and secure services. Join our Enterprise Service Management team and contribute to increasing the availability of our products and services and reducing technology disruption risk. The integrity and resilience of our services are critical to ensure they are ‘always on’ for Macquarie’s businesses. At Macquarie, our advantage is bringing together diverse people and empowering them to shape all kinds of possibilities. We are a global financial services group operating in 31 markets and with 56 years of unbroken profitability. You’ll be part of a friendly and supportive team where everyone - no matter what role - contributes...

Senior Flutter Developer - Outside IR35 - Contract   A rare opportunity to join our fast-growing technology company selling high-value software development services. An ideal role for an experienced and dynamic developer who wants to be involved with an exciting and challenging project.   Must have   Several years of experience developing customer-facing mobile apps for both iOS and Android, using Flutter. Experience working as part of a team (including tools to support collaboration, such as git and user story management software) Experience working closely with other job roles, such as designers and product owners   Nice to have   Experience with mobile back-end development / Node Experience of CI/CD/DevOps for mobile apps Experience collaborating with clients or stakeholders, including clarifying requirements and presenting work at sprint demos Have experience delivering great outcomes for...