Top Software Engineer Jobs in London

The role involves building and scaling full-stack applications for document analysis, collaborating with AI engineers, and establishing engineering best practices.

Develop systems that enhance high-performance trading platforms, focusing on workload distribution and real-time support for quantitative researchers.

As a Full-Stack Engineer, you'll collaborate with the engineering team to design and launch products across the entire stack, from front-end to back-end and infrastructure.

As a Forward Deployed Software Engineer, you will work directly with customers to develop software solutions, utilizing full stack technologies and having autonomy over projects.

The Software Engineer will develop SaaS-based products, focusing on Field Service Management, collaborating with teams to ensure high-quality software delivery.

Develop and maintain core Ruby on Rails services, collaborate with product managers on features, identify and resolve performance and scalability issues, participate in architectural discussions, and help refine engineering standards and delivery practices.

Develop scalable cloud infrastructure and robust software solutions for AI/ML, collaborating with engineers and scientists to enhance scientific research.

We are seeking an experienced Software Engineer to join our growing technology team focusing on Defence and Cyber Security projects.

We are looking for penultimate year students for a software development internship. Candidates should have a strong foundation in computer science and a passion for quality coding.

Develop, test, and deliver features for Webex real-time media microservices. Participate in DevOps, on-call rotations, automated testing, debugging, and cross-team collaboration. Use AI tools, learn new technologies, and receive mentoring and formal training.

As a Software Engineer at Humaans, you will build end-to-end features, improve infrastructure, and support customers using TypeScript and ReScript in a collaborative development environment.

As a Data Software Engineer, you will enhance reference data products, establish technical direction, and ensure data quality and compliance within trading systems.

As an AI Software Developer, you'll create AI-driven solutions, collaborate with teams, gather requirements, and manage product deliverables in a financial context.

Develop and implement reliability features, improve system performance, provide L2 support, and create automation tools for operational stability.

As a Software Engineer on the Safeguards team, you will build systems for monitoring AI models to promote safety and prevent misuse, ensuring oversight and user well-being.

Join Uncountable's Implementations Engineering team to build software that integrates R&D lab instruments with their platform, working closely with customers and developing automated data pipelines.

The role involves developing digital solutions, working in Agile environments, and collaborating in multi-disciplinary teams, focusing on Golang coding and testing.

Software Engineers at Jane Street engage in collaborative technology-driven work, using functional programming with OCaml and Python for various business problems.

Develop complex distributed systems using Java, Kafka, and Kubernetes. Mentor team members and contribute to all phases of the product lifecycle.

Lead design and implement IAM-focused public cloud platform services. Develop and maintain production code, drive architecture and reliability, automate remediation, lead reviews, mentor engineers, and collaborate across platform and trust teams to deliver secure, scalable cloud services.

Design and maintain the agentic development harness: context pipelines, tools, sandboxes, prompt/skill libraries, eval suites and review gates. Turn recurring engineering tasks into safe agent-run workflows, debug complex failures, ship LLM-powered features, and collaborate closely with product, legal, and operations to deliver production-grade software.

Build and maintain the platform powering an AI-native retail product: secure authentication/authorization, cloud-deployed distributed services, automated releases, API/webhook quality, real-time data processing, agentic automation, and tooling to enable product teams to prototype and ship quickly.

Design, implement, and deliver full-stack features for the Validus Horizon platform. Build and maintain ETL/data pipelines and integrations, own small-to-medium projects, improve system performance and scalability, collaborate with stakeholders and clients, mentor team members, and present technical solutions and roadmaps to drive product and client success.

Design, build, and maintain low-latency, front-to-back trading infrastructure including order management, exchange connectivity, smart order routing, internalization, and clearing. Improve scalability and performance, produce trading tools, and support diverse projects across frontend and backend technologies while collaborating with cross-functional teams.

Lead end-to-end development of 0-to-1 fintech products: partner with executives, architect pragmatic full‑stack solutions, evaluate and implement AI capabilities, prototype rapidly, and bootstrap scalable product foundations for incubation.