53 senior software engineer jobs found

Senior Software Engineer, 3 month contract   We help organisations navigate the future of technology, combining human expertise, emerging tech and AI to deliver better outcomes, faster.   Since 2014, we've worked side-by-side with clients to solve complex challenges, build high-performing teams, and create lasting capability.   About you: You care deeply about producing high-quality work that delivers real value You're comfortable navigating ambiguity and solving complex problems collaboratively You bring strong expertise in your craft, alongside a willingness to keep learning You communicate clearly and build trust quickly with clients and teammates You're pragmatic, adaptable and outcome-focused You value low-ego collaboration and enjoy working as part of multidisciplinary teams   What you'll bring to the table: Design, implement, and maintain high-performance embedded and real-time software components in...

Senior Software Engineer - Outside IR35 - Contract (Energy)   About the role   We are looking for a Senior Software Engineer (ideally with some Data Engineering experience) to join our client team in the energy trading sector.   End date is not certain, but likely to be December 2026 or early Q1 2027.   We are looking for experience in the following technologies:   Microsoft Azure ecosystem Understanding of networking & security options in Microsoft Azure Infrastructure-as-code (preferably Bicep) Python   Experience in the below would also be beneficial:   Azure DevOps (pipelines) SQL   We generally spend 2 days per week on-site with the client in central London (Monday & Thursday).   £500-600 per day outside IR35   Start date: 10/08/2026 End date: December 2026 or early Q1 2027   About Softwire  ...

Joining a new project Ideally have worked on Financial Services Projects before (Payments would be great) Fullstack Experience Tech Stack - Kotlin Backend, JS/TS React Frontend Start date ASAP Duration 6 months (Likely to extend) 2/3 days / week in person working (London) Immediate Interviews   The best bit about Red Badger is, of course, the team. We are really proud of our people; we support and learn a lot from each other; we work really hard but have fun doing it. We are a diverse group made up of 22 different nationalities, speaking 17 different languages.   Our 3 founders, Dave, Cain and Stu, who have considerable tech and consultancy experience and still own 100% of the company. We've been consistently profitable and have grown responsibly from the beginning.   We are based at Old Street in the heart of "tech city" and get thoroughly stuck in with the brilliant community around...

Senior Software Engineer – RUST   Contract initial 12 months Outside ir35 Hybrid or Remote   Overall Ambition   Solve some of today's most complex hospitality challenges by creating innovative, scalable technology using a modern, open technology stack. Help shape the technical direction of our products while delivering exceptional customer experiences across the USA.   What We're Looking For   We're looking for a Contract Senior Software Engineer to join our passionate, lean, agile, fast-growing and evolving technology team on a permanent basis.   You'll be an experienced engineer who enjoys solving difficult technical problems, building highly scalable systems and helping those around you become better engineers. You'll be comfortable owning complex initiatives from design through to production, influencing technical direction and driving engineering excellence across multiple teams....

Joining a new project Ideally have worked on Financial Services Projects before (Payments would be great) Fullstack Experience Tech Stack - Kotlin Backend, JS/TS React Frontend Start date ASAP Duration 6 months (Likely to extend) 2/3 days / week in person working (London) Immediate Interviews   The best bit about Red Badger is, of course, the team. We are really proud of our people; we support and learn a lot from each other; we work really hard but have fun doing it. We are a diverse group made up of 22 different nationalities, speaking 17 different languages.   Our 3 founders, Dave, Cain and Stu, who have considerable tech and consultancy experience and still own 100% of the company. We've been consistently profitable and have grown responsibly from the beginning.   We are based at Old Street in the heart of "tech city" and get thoroughly stuck in with the brilliant community around...

Joining a new project Ideally have worked on Financial Services Projects before (Payments would be great) Fullstack Experience Tech Stack - Kotlin Backend, JS/TS React Frontend Start date ASAP Duration 6 months (Likely to extend) 2/3 days / week in person working (London) Immediate Interviews   The best bit about Red Badger is, of course, the team. We are really proud of our people; we support and learn a lot from each other; we work really hard but have fun doing it. We are a diverse group made up of 22 different nationalities, speaking 17 different languages.   Our 3 founders, Dave, Cain and Stu, who have considerable tech and consultancy experience and still own 100% of the company. We've been consistently profitable and have grown responsibly from the beginning.   We are based at Old Street in the heart of "tech city" and get thoroughly stuck in with the brilliant community around...

Location - London, Manchester and Ipswich About the Role We are looking for a talented and motivated ServiceNow Developer to join our growing team. You will be responsible for designing, developing, and implementing solutions on the ServiceNow platform across a range of modules, supporting our public sector and government clients. Given the sensitive nature of the environments you will be working in, candidates must hold an active Security Check (SC) clearance. You will work closely with business analysts, architects, and stakeholders to deliver high-quality ServiceNow solutions that drive efficiency, automation, and improved service delivery across the organization. Key Responsibilities Design, develop, configure, and maintain ServiceNow solutions across key modules including ITSM, ITOM, HRSD, SecOps, GRC, and CSM. Develop custom applications, workflows, UI policies, business rules, client scripts, and script includes using JavaScript and the ServiceNow...

Title: Senior Growth Engineer - Contractor 👫 Department: Engineering 🎁 Benefits & Culture: Lottie’s careers page here , Lottie’s tech careers page here 🎥 Meet our CTPO: Solving hard problems in care 💗 Mission: Elevate later life for everybody and build the care sector of the future. 💻 Office Policy: Fully remote, you’ll need to be in Europe. Or hybrid if preferred. 🌍 HQ: London Bridge, London, UK   🔍 The Opportunity: Lottie's marketplace connects millions of families with the right care at the right time. We've built something real - now we need to grow it faster, smarter, and with more precision than a traditional engineering team can. We're looking for a Senior Growth Engineer to join a small, focused Marketplace team and own the full experiment loop - from hypothesis to code to result. You'll work closely with a PM and designer to run high-velocity tests, feed signals back to Google to...

Full job description Location: London 1-2 days a week. Department: Engineering Employment Type: Contract Contract Length: 6 months (with potential for extension) About YLD: Our goal is to help our clients keep moving forward. We work with them to build the skills and capabilities they need to stay ahead of the competition, and we know our success only happens when they succeed. We’re a team of curious, talented people, and we’re committed to making YLD a place where great people want to work, grow, and stay. We’re a remote-first consultancy specialising in software engineering, product design, and data. Our teams are based across London, Lisbon, and Porto, and we create digital solutions that continue to deliver value long after our work is done. About the role: As a Senior Software Engineer at YLD, you’ll be part of a client team building innovative products. We’re looking for someone curious,...

Location: London 1-2 days a week. Department: Engineering Employment Type: Contract Contract Length: 6 months (with potential for extension) About YLD: Our goal is to help our clients keep moving forward. We work with them to build the skills and capabilities they need to stay ahead of the competition, and we know our success only happens when they succeed. We’re a team of curious, talented people, and we’re committed to making YLD a place where great people want to work, grow, and stay. We’re a remote-first consultancy specialising in software engineering, product design, and data. Our teams are based across London, Lisbon, and Porto, and we create digital solutions that continue to deliver value long after our work is done. About the role: As a Senior Software Engineer at YLD, you’ll be part of a client team building innovative products. We’re looking for someone curious, passionate, driven, and enthusiastic. You should be...

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 Full-Stack Dev - you've been around the block, and you know your way through both backend trenches and frontend battlefields. PHP? Still your reliable sidekick. JavaScript? Sometimes a mischievous friend, sometimes a chaos gremlin, but you've learned how to keep it in line. You work best with fierce independence. You don't need hand-holding - you're the one who does the hand-holding when it's needed. You don't wait for direction; you are the direction. To twist a phrase:...

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...

Senior Operations Lead – Service Operations Transformation (Contract) Toyota Connected Europe (TCEU) · London (Hybrid) · Contract – Initial 3 months (extendable) Outside IR35   About the role: Our Operations function is at an important stage of its evolution. The department has an ambitious FY2026 plan to deliver: intelligent automation, AIOps, process excellence, stronger governance, workforce transformation into SRE/ARE-aligned engineering, and a new “Ops as a Product” operating model. To get there, we first need to stabilise and strengthen the current team's standards, ownership and ways of working. We are looking for an experienced, hands-on Senior Operations Lead to join on an initial 3-month contract to do two things in parallel: stabilise the current team, resetting standards, ownership and customer confidence, and begin its transformation into a modern, engineering-led operations capability. The...

Senior Red Hat Systems Engineer / Linux Engineering Lead Canary Wharf, UK Hybrid (2 days a week) Long Term Contract (Inside IR35)   Professional Summary Expert in end-to-end Linux lifecycle management , including patching, OS upgrades, image creation, and large-scale deployments. Extensive experience with Red Hat Satellite , Ansible Automation Platform , and enterprise tooling to automate infrastructure, reduce operational overhead, and improve system reliability. Strong background in performance engineering, vulnerability management, disaster recovery, and business continuity , with hands-on expertise in VMware and AWS architecture , including networking, storage, and compute optimization. Proven ability to lead initiatives, troubleshoot complex cross-domain issues (OS, network, virtualization, cloud), and collaborate effectively with DevOps, Security, and Application teams.   Core Technical Expertise Linux / Red Hat...

Contract - Senior Full Stack Developer Job description   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...

Contract - Senior Cloud Engineer Job description   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...

Published 1 day ago Job Title: Data Scientist/ AI Engineer Job Location: 4 days in Canary Wharf, ideally 4 days per week onsite Contract Length: 12 Months Industry: Oil and Energy / HR Technology Working Hours: 40 hours per week   Summary We’re looking for engineers who think holistically, automate relentlessly, and are fluent in the fast-moving world of AI tooling and infrastructure—but grounded in disciplined engineering principles. Our AI organization is building high-impact AI-powered applications that deliver real business value at speed. As a Senior AI Engineer, you’ll play a critical role in building and deploying scalable AI-powered applications through solid software engineering excellence combined with pragmatic use of modern AI capabilities. This is a role for seasoned engineers who are excited about applying AI in practical and scalable ways. We’re looking for individuals who thrive at the...

Why Keyrus, Why Now! Keyrus is an international group of 2,800 consultants and experts across 28 countries, built on a single conviction: AI does not transform businesses. Architected intelligence does. For more than 30 years, we have been building the data foundations that make intelligent systems work — designing the Operating System of the intelligent enterprise, where intelligence is embedded into the core of business processes to create sustainable value: we operationalise intelligence. AI does not replace humans. It repositions us to a place no system can follow: understanding, deciding, designing, and creating. At Keyrus, you will not just develop skills — you will develop judgment. Your expertise sharpens with every system you architect, every client challenge you solve, and every deployment that compounds on the last. Over time, you grow into one of the rarest professionals of the intelligence era: someone who bridges data, AI, and human...

Role description Principal Data Engineer Nottingham/ London (Hybrid) Contract Inside IR35/ Permanent   About the Role As a Principal Data Engineer, you will combine deep technical expertise with engineering leadership to drive the design, development and evolution of our cloud-scale data platform. You will provide technical leadership across distributed data processing, data products, streaming architectures and data platform capabilities, while remaining hands-on with coding, design and engineering best practices. You will play a key role in shaping engineering standards, mentoring teams, influencing technical direction and delivering robust, scalable data solutions that enable our Engineers, Data Scientists, Analysts and Governance teams to unlock business value.   What You'll Do Lead the design, development and continuous evolution of cloud-scale data platforms and data products across batch and streaming workloads...

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...