51 to 75 of 89 Senior Software Engineer Jobs in London

Senior Golang/Go Engineer – Contract – £550 per day (Outside IR35) – London A well known UK tech business is looking for a Senior Golang/Go Engineer to join on an initial 2 month contract, with a strong chance of extension. Key details … looking for someone product focused who understands the user journey, with experience around observability and system reliability. You’ll need to be a senior engineer who can take ownership, lead projects, and drive delivery, even if you’re not formally a Lead Engineer. Apply now for more details. ...

Senior Software Engineer (JVM based ecosystem/Backend leaning) £90,000 – £120,000 | London (Hybrid – 3 days in office) The Opportunity We’re partnered with a scaling, venture-backed SaaS business delivering a mobile-first platform used by large distributed workforces across global enterprise organisations. This … workflows, and integrate workplace tools into a single platform used by large global enterprises. Customers include large brands operating at significant scale, meaning the software is used daily by large, distributed user bases. The Engineering Environment & Culture You’ll be joining a company of around 130 people in total ...

Senior Software Engineer C++ (Python, SQL, Linux, Trading, FinTech, Financial Technology, Low Latency, Backend) This is a hybrid role, 3 days remote and 2 days in the office Our client actively encourages diversity, equality and inclusion within its workforce and welcomes applications from a diverse background ...

Full Stack Software Engineer | London | £100,000 - £150,000 | Python | React Location: London-based (hybrid) Salary: £100,000 - £150,000 + equity Tech Stack: Backend: Python (Flask or FastAPI or Django - ideally a blend of 2) Frontend: React, TypeScript Cloud Systems: GCP or AWS Are you a software engineer who enjoys shipping real products, solving tangible customer problems, and seeing your work in production quickly? We are working with a Series A AI technology company building automation software that sits directly in the operational core of key businesses. This is not experimental AI. This ...

Senior Software Engineer - Python - London Salary: Up to £90,000 Location: Hybrid 2 days per week in Canary Wharf (E14) Contract: Permanent, Full Time Interviews: WC 9th February Agency Partner: dcoded The Business dcoded are partnering with a high-growth Real-Time Data SaaS business based ...

Senior Full Stack .NET Engineer • £75,000 – £90,000 + share options • London | Hybrid working (2–3 days office) Our client is a fast-growing payments technology company who are transforming their sector. Due to continued platform growth and global demand for their technology, they are expanding their … engineering team with a Senior Full Stack .NET Engineer who can play a pivotal role in shaping the next generation of payment products and lead the development for a range of new features. This role is ideal for a Senior .NET engineer who thrives within ...

seeking a Senior Software Engineer to join a growing engineering team and help build scalable software systems that support cutting-edge research in biotechnology and life sciences. You will play a key role in designing and developing platforms that enable scientists, data engineers, and bioinformaticians … platforms Build and maintain data pipelines for large biological and research datasets Collaborate with scientists, bioinformaticians, and data teams to translate research needs into software solutions Contribute to cloud infrastructure, system architecture, and performance optimisation Ensure high-quality code, testing, and CI/CD best practices Mentor junior engineers ...

time to step into a role where you take real ownership of complex, high-precision technology? An innovative Oxfordshire-based company is seeking a Senior Software Engineer to help shape and deliver the software behind next-generation systems. This is a hands-on role combining technical … leadership with close collaboration across software and advanced hardware teams. You will play a key role in designing and developing robust applications that directly control precision hardware platforms. The position goes beyond feature delivery. You will influence architecture, strengthen engineering standards, support system deployments and mentor a small team ...

time to step into a role where you take real ownership of complex, high-precision technology? An innovative Oxfordshire-based company is seeking a Senior Software Engineer to help shape and deliver the software behind next-generation systems. This is a hands-on role combining technical … leadership with close collaboration across software and advanced hardware teams. You will play a key role in designing and developing robust applications that directly control precision hardware platforms. The position goes beyond feature delivery. You will influence architecture, strengthen engineering standards, support system deployments and mentor a small team ...

looking for a Senior Software Engineer to join a growing team building smart, scalable tools used by professionals across a range of industries. You'll work onsite in London, helping shape robust backend services and responsive user experiences using React, NextJS and NodeJS. What ...

looking for a Senior Software Engineer to join a growing team building smart, scalable tools used by professionals across a range of industries. You'll work onsite in London, helping shape robust backend services and responsive user experiences using React, NextJS and NodeJS. What ...

high-performing rapidly growing capital markets organisation based in London are on the lookout for a Senior Software Engineer with a strong background in Golang or Python. The ideal candidate is a self-motivated, startup minded, multi-tasker, and demonstrated team-player. You will … departments on complex problem solving and solutions Qualifications Bachelor's degree in Computer Science (or related field) 4+ years of experience in a professional Software Engineering environment Strong proficiency in Golang or Python Tech-agnostic engineer, with competence in a major programming language (experience in functional programming languages ...

About the Company A growing technology organisation is seeking a Senior Software Engineer to join its Data Platform team, working on tools and APIs that connect raw and enriched data to user-facing applications. About the Role This role offers the opportunity to collaborate closely with world … make data more actionable and accessible Stay pragmatic, recognising when to perfect and when to move fast Take full ownership across the entire software development lifecycle Feel comfortable switching between backend and frontend development Enjoy working closely with data engineers ...

Senior Software Engineer (Angular/Node.js/Terraform) Contract Inside IR35 Rate: Up to £440 per day Duration: 3 months+ Remote (with occasional travel to London) Start: ASAP Security Clearance: Active SC required About the opportunity Exalto Consulting is supporting a confidential client on a nationally significant ...

Fintech organisation based in London are on the lookout for a Senior Software Engineer in order to contribute to the development of the next iteration of their platform. They are seeking someone with keen proficiency in Python and Django primarily in the London area who want ...

wide variety of financial services, including cross-border payments, institutional crypto liquidity, digital asset custody, and our enterprise-grade stablecoin RLUSD. As a Software Engineer at Ripple, you'll work on payment technologies, building scalable solutions that power the future of finance. Your primary responsibilities will … observability, ensuring Ripple products interact seamlessly with global banks and payment providers in a consistent and trustworthy way. We are looking for a software engineer passionate about learning and understanding the way a complex fintech system works end-to-end and can help drive forward the development. ...

Senior Fullstack Engineer £450–550 per day 6 months Outside IR35 Hybrid – 2 days per week on site (London) We’re supporting a high-growth, AI-driven product business building a scalable platform from the ground up. They operate as a small, high-calibre team and real ownership. … They’re looking for a Senior Fullstack Engineer (back end leaning) to take responsibility for core backend systems and help shape product direction in fast-moving environment. This is a role for someone who is comfortable building without perfect specs and takes initiative naturally. Requirements Strong Node.js ...

Title: Software Engineer (Embedded Systems) Key Responsibilities: Design software solutions for embedded systems. Implement and test software in both Assembler and C, including unit and continuous integration testing. Implement, integrate, and optimize sonar signal processing algorithms. Develop high-quality software solutions by writing efficient, maintainable … verification teams for integration, defect analysis, and resolution. Review design and code from peers, contributing to a culture of learning and feedback. Contribute to software architectural design, preferably using UML and the Enterprise Architect tool. Estimate workload and assist in building a backlog of work packages for progress tracking. ...

Senior Core Java Engineer – Low-Latency Trading 💹 💰 Salary: Up to £125,000 + bonus + benefits 📍 Location: City of London (3 days onsite) Build ultra-low latency systems at the heart of global FX trading! This is an opportunity for a Senior Core Java Engineer … high-performance systems Background working in high-throughput, distributed environments Comfortable working in cloud-based infrastructure (AWS or GCP) Strong engineering fundamentals and a senior-level mindset (ownership, mentoring, architectural input) Interest in financial markets or trading systems (experience in finance is a plus, not essential) 🌍 Why join? ➡️Work ...

Permax Recruitment is working in partnership with a London based firm who are on the lookout for a Software Engineer. For nearly a century, our client has been building a firm as accountants, auditors, tax specialists and close advisors to clients operating in emerging markets, disrupting the status quo. … playerscryptocurrency exchanges, blockchain innovators, Web3 pioneers, and digital asset fundsoffering tailored audit, tax, and advisory services that keep pace with this fast-evolving landscape. Senior Software Engineer (Cloud Infrastructure & DevOps) Location: London (Three days in office, two days wfh) Salary: Approx £100,000 + Bonus While ...

Location: London/4 days onsite per week About: We are hiring a Senior C# Engineer on behalf of a boutique multi-strategy hedge fund to join a team responsible for overhauling the firm’s market data platform. The team is undertaking a multi-year initiative to build … unified data platform, including a new cloud-native data warehouse and lakehouse architecture, built from the ground up. As the most senior engineer within a small team of 7–8, you will work closely with stakeholders to understand requirements and act as a subject matter expert, designing ...

Senior Full-Stack Engineer (Frontend-Leaning) London (Hybrid - 2 days/week in office) £70,000 - £85,000 + Benefits Method Resourcing are working with a London-based engineering team hiring a Senior Full-Stack Engineer with a strong frontend focus to join a project building … including containerisation with Docker and Kubernetes, alongside observability tooling such as Grafana and Prometheus. What they're looking for 6-10+ years of software engineering experience Strong, hands-on React in production environments Solid experience with JavaScript across the stack Excellent JavaScript fundamentals (non-negotiable) Experience working ...

Senior Full Stack Engineer | London | £80,000 – £150,000 | Python | React Location: London (hybrid) Salary: £80,000 – £150,000 + meaningful equity Hiring for mid-senior-lead levels! Tech Stack: Backend: Python (Flask, FastAPI) Frontend: React, TypeScript Cloud: GCP or AWS Do you like building software … demo-ware. Not slide-ware. Real systems, in production, powering real businesses. We’re partnered with a Series A AI company building automation software embedded directly into the operational core of fast growing organisations. This is production critical, customer facing, revenue impacting software used daily at scale. This ...

Senior Full-Stack Engineer (Frontend-Leaning) London (Hybrid - 2 days/week in office) £70,000 - £85,000 + Benefits Method Resourcing are working with a London-based engineering team hiring a Senior Full-Stack Engineer with a strong frontend focus to join a project building ...

Senior C# Engineer | OMS Team | Elite Hedge Fund | London-Hybrid 6 month rolling FTC (Fixed Term Contract) A leading hedge fund is looking for a Senior C# Engineer to join their Order Management Systems (OMS) engineering team in London. This is a high impact, hands ...