39 senior software engineer jobs found in London

Join Secure Code Warrior to create a safer digital landscape by assisting companies to secure their software through developer-led practices!   Secure Code Warrior’s mission is to establish new standards for coding that transform the ways software is created. We do this by providing the world’s leading agile learning platform that delivers the most effective secure coding solution for developers to learn, apply, and retain software security principles. More than 600 enterprises trust Secure Code Warrior to implement agile learning security programs, build safer software, and create a culture of developer-driven security. We are a venture-backed company with offices in Australia, the United States, Belgium, Iceland, and the United Kingdom.   Secure Code Warrior is seeking a Senior Engineer to take long-term ownership of our core system-level product suite across Windows and macOS. In this contract role, you will be the architectural...

About Driven Studios Driven is a multi-platform streaming service built for automotive enthusiasts — racing, builds, customs, and classic cars — delivered across connected TV, mobile, and web. We're an early-stage team moving fast, and we build with AI coding agents at the centre of our workflow. We need someone who can keep that pace without letting quality slip.   The Role We're looking for a senior engineer to build new features across our mobile apps, TV apps, and websites — and to keep the bar high while doing it. This is a builder's role first: you'll be shipping a lot of greenfield product across all three platforms. Alongside that, you'll be the technical quality bar for the team, spending meaningful time reviewing code — including output produced by AI coding agents — to ensure everything ships clean, well-structured, and as maintainable as anything written by hand. You'll also own deployments across every platform...

We are seeking a passionate Software Engineering Manager who will provide technical expertise and operate with excellence. Being creative, curious, and confident, you will be an integral part of our empowered, self-managing, multi-disciplinary engineering teams - designing, building, releasing, and maintaining products. You will play a key role in driving our ambition to create a best-in-class software engineering team, environment, and culture. This is an initial 6 month contract (outside IR35) that requires you to work on client site 3 days a week in London, Paddington. Your key accountabilities will include: • Team Management: Build, mentor, and manage a high-performing software engineering team. Foster a culture of collaboration, innovation, and continuous improvement within the team. Facilitate communication and collaboration among team members. Ensure budgets, people and resource allocation, and workload, balance across projects. • Agile Delivery: Oversee...

  Job Title: Senior Full Stack Developer (contract) Location: London Hybrid. Travel to the London office 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for Senior Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position...

  Job Title: Senior Cloud Engineer (contract) Location: London Hybrid. Travel to the London office 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for experienced Senior Cloud Engineers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position requires...

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

ID: 58857   2 Openings LONDON       Role description Senior DevOps Engineer with Agentic AI tools exp London (Hybrid – 3 days onsite) Permanent/FTC / Contract (Inside IR35) Initial 6-month engagement with strong extension potential for Contract roles Immediate availability preferred Applicants must have the right to work in the UK   We’re seeking a highly capable Senior DevOps Engineer to help modernise and evolve a large-scale enterprise DevOps toolchain within a complex, regulated environment. This role sits at the intersection of platform engineering, developer enablement, security, and governance. You’ll work closely with engineering teams, platform owners, security, audit, and risk stakeholders to deliver secure, scalable, and developer-friendly DevOps capabilities that support enterprise software delivery at scale. This is a hands-on...

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...

Principal Engineer London, United Kingdom | Posted on 02/06/2026 Scrumconnect Consulting  is a leading UK digital and technology consultancy specialising in delivering impactful, user-centred services for the public sector. We work with central government departments, agencies, and local authorities to build digital products and services that improve outcomes for citizens. With a team of engineers, architects, delivery professionals, and designers, we bring deep expertise in digital transformation, cloud technologies, and agile delivery. We are committed to engineering excellence, innovation, and creating an inclusive environment where everyone can thrive Role Overview We are seeking an experienced and highly skilled  Principal Engineer  to provide technical leadership, architectural guidance, and hands-on engineering expertise across complex digital products and platforms. As a Principal Engineer, you will be responsible for shaping...

  Job Title: Senior Cloud Engineer (contract) Location: London Hybrid. Travel to the London office 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for experienced Senior Cloud Engineers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position requires...

  Job Title: Senior Full Stack Developer (contract) Location: London Hybrid. Travel to the London office 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for Senior Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position...

ID: 58857   2 Openings LONDON       Role description Senior DevOps Engineer with Agentic AI tools exp London (Hybrid – 3 days onsite) Permanent/FTC / Contract (Inside IR35) Initial 6-month engagement with strong extension potential for Contract roles Immediate availability preferred Applicants must have the right to work in the UK   We’re seeking a highly capable Senior DevOps Engineer to help modernise and evolve a large-scale enterprise DevOps toolchain within a complex, regulated environment. This role sits at the intersection of platform engineering, developer enablement, security, and governance. You’ll work closely with engineering teams, platform owners, security, audit, and risk stakeholders to deliver secure, scalable, and developer-friendly DevOps capabilities that support enterprise software delivery at scale. This is a hands-on...

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

Lead DevOps Engineer (AI- Focused) Mandatory hands-on experience supporting AI/ML or GenAI p latforms 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. Job Location: London (Hybrid - 3 days in the office) Job Summary Are you passionate about making developers' lives easier, faster, and more fulfilling? We're on a mission to supercharge our engineering culture by building a world-class DevOps organization that's the envy of the industry. This is a great opportunity to join a growing company in an innovative and dynamic industry! We are looking for a strong, hands-on Lead DevOps Engineer t o build and maintain a brand-new cloud-based Index platform. You will lead a team of Senior and Junior DevOps Engineers to help us...

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...

Data Engineer - Outside IR35 - Contract - SC ESSENTIAL   A rare opportunity to join our fast-growing technology company selling high-value software development services. You will be working within a Government department as part of an existing team to support the rollout of a new Database.   Must have   Several years' experience with data modelling, data mapping, and defining data standards Experience working with complex, multi-organisation data landscapes Track record of delivering clarity in the presence of ambiguity Experience working with senior stakeholders to define strategy   Nice to have   Experience working with central and/or local government Familiarity with housing / property / regulatory datasets Experience implementing data standards that have already been defined   Your approach   You are passionate about delivering great technical quality, whether...

    Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for Senior Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position requires a solid understanding of Development and SDLC as per the tech listed below, preferably with Financial Services experience.   Your professional experience   Minimum of 7 years Full Stack Development experience (preferably within Financial...

  Job Title: Senior Cloud Engineer (contract) Location: London Hybrid. Travel to the London office 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for experienced Senior Cloud Engineers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position requires...

Lead DevOps Engineer (AI- Focused) Mandatory hands-on experience supporting AI/ML or GenAI p latforms 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. Job Location: London (Hybrid - 3 days in the office) Job Summary Are you passionate about making developers' lives easier, faster, and more fulfilling? We're on a mission to supercharge our engineering culture by building a world-class DevOps organization that's the envy of the industry. This is a great opportunity to join a growing company in an innovative and dynamic industry! We are looking for a strong, hands-on Lead DevOps Engineer t o build and maintain a brand-new cloud-based Index platform. You will lead a team of Senior and Junior DevOps Engineers to help us...

Senior DevOps Engineer with Agentic AI tools exp London (Hybrid – 3 days onsite) Permanent/FTC / Contract (Inside IR35) Initial 6-month engagement with strong extension potential for Contract roles Immediate availability preferred Applicants must have the right to work in the UK   We’re seeking a highly capable Senior DevOps Engineer to help modernise and evolve a large-scale enterprise DevOps toolchain within a complex, regulated environment. This role sits at the intersection of platform engineering, developer enablement, security, and governance. You’ll work closely with engineering teams, platform owners, security, audit, and risk stakeholders to deliver secure, scalable, and developer-friendly DevOps capabilities that support enterprise software delivery at scale. This is a hands-on engineering role with strong influence across CI/CD strategy, platform reliability, automation, governance, and AI-assisted engineering...