Top Software Engineer Jobs in London

As a Forward Deployed Software Engineer, you will work with customers to implement AI solutions, guide product direction, and ensure successful technology adoption.

The Software Engineer will develop AI-based capabilities, maintain software stacks, mentor others, and tackle engineering challenges across various technical fields.

As a Frontend Software Engineer, you'll lead UI development, review code, and mentor colleagues while enhancing usability and optimizing user experience across products at Helsing.

The candidate will design and develop Windows applications for SDK integration and delivery, collaborating with cross-functional teams, and ensuring code quality through various practices.

The Senior Back-End Software Engineer will implement features, improve logic, write integrations with APIs, and contribute to design discussions within a startup environment.

Design, build, test, deploy and run full‑stack SaaS features using Node.js, TypeScript and React. Participate in design, code reviews, pairing, refactoring, API and backend development, ensure security, reliability and accessibility, and support production monitoring and agile delivery.

Join an R&D team building a high-performance data warehouse. Design, develop, and test data warehouse microservices; troubleshoot field issues; collaborate with Product and Technical Support to prioritize and assist customers. Work across the stack on performance, cluster management, security, and debugging.

Build and operate the AI Portal SaaS platform: develop services, APIs, integrations and UIs; improve reliability and observability; triage and resolve production incidents; participate in on-call rotation; deliver end-to-end product features for internal and partner customers.

Design, build and maintain software and automation for control monitoring, testing, reporting and evidence collection. Integrate with security platforms (SIEM, IAM, EDR), cloud and engineering tools, develop APIs, CLI tools and data pipelines, and translate technical control activity into auditable evidence and reporting to reduce manual audit and assurance effort.

Lead design, build, and operate enterprise perimeter, proxy, and SSE/SASE security solutions. Architect ZTNA/IAP patterns, integrate SWG capabilities, enforce identity- and context-based policies, drive governance, roadmap, cross-team delivery, operational excellence, and adoption of AI-assisted engineering practices to improve security, stability, and automation.

Lead CMS and web platform modernisation efforts, prototype AI/agentic POCs, and support the Principal Engineer to shape technical direction. Investigate where AI adds value, refocus the CMS team on higher-value marketing work, improve scalability and management, and collaborate with stakeholders to define pragmatic technical approaches and roadmap.

Design, implement, integrate, and deploy autonomy software for defense robotic platforms. Lead architecture and technical decisions, mentor engineers, perform SIL/HIL testing, support live UAV flight tests, interface with sensors and autopilots, and troubleshoot complex integration and real-time edge systems.

Lead design, develop, test, and deploy production-grade C++ software for autonomy and defence customers. Integrate customer software, mentor junior engineers, and travel to customer sites and offices.

Lead design, development and maintenance of scalable, secure international pricing platforms and integrations. Provide technical leadership, conduct code reviews, champion DevSecOps and automated testing, mentor engineers, and drive observability, incident management and operational excellence across cloud-native systems.

Lead design and build of scalable, secure international pricing platforms and integrations. Provide technical leadership, code reviews, DevSecOps practices, observability, mentoring, and collaborate with product and stakeholders to deliver robust backend systems for multiple markets and channels.

Design, build, and operate production ETL pipelines on Databricks; own data modeling and governed table structures; drive multi-team technical designs; implement pipeline observability and operational hygiene; integrate AI tooling into data workflows; mentor engineers and contribute to platform infrastructure with Terraform and Unity Catalog.

Lead architecture and implementation of Ripple's Caspian lakehouse: ingestion, transformation, governance, and data quality. Design Databricks pipeline patterns, build critical components, define data contracts and lineage, and raise engineering standards. Drive AI/LLM integrations for pipeline automation and self-serve analytics, lead cross-team multi-quarter initiatives, and mentor senior engineers into greater ownership.

Lead technical direction for an analytics and observability platform capturing product event data. Solve multi-system scaling problems, enable self-service and AI tools, improve tooling and processes, mentor engineers, and partner with product, trading, and business teams to expose reliable data and insights company-wide.

Drive backend architecture and delivery for acquisition-focused features. Build and maintain Ruby on Rails services, PostgreSQL schemas, and GraphQL endpoints. Partner with growth marketing on server-side tracking, analytics, A/B testing, and cookie compliance. Mentor engineers, perform code reviews, and improve squad engineering practices to optimise signup funnels and conversion.

Lead design and delivery of scalable, accessible Vue 3 + TypeScript frontends. Drive architecture, component libraries, testing, performance optimisation, CI/CD, cloud deployment and observability. Mentor engineers, influence technical direction, evaluate emerging technologies (including AI), and ensure high-quality, maintainable solutions for clients.

As a Senior Software Engineer at KoBold, you'll develop innovative data systems for mineral exploration, collaborating closely with geologists and data scientists to improve exploration success rates. You'll own projects end-to-end, engage with users, and create scalable, production-quality solutions for complex geological challenges.

As a Senior Software Engineer, you will build complex backend services and APIs using Node.js and TypeScript, contribute to design discussions, mentor junior engineers, and enhance service reliability and engineering quality.

Lead design, implementation, deployment, and operation of identity services (SSO, OIDC, SCIM, sessions). Mentor engineers, own reliability and performance, respond to incidents, set technical direction, and evolve the identity platform for scale and availability.

Build and operate metadata, semantic, lineage, and provenance capabilities within a cloud-native Data Platform. Translate analytical and ML workflows into versioned, discoverable, governed dataset products. Implement ingestion, APIs, automation, and tooling on AWS to improve discoverability, reproducibility, and reuse of scientific data. Collaborate with Computational Immunology, lab, and platform teams and own technical solutions from design through production and operations.

Lead design and development of core data storage, streaming, caching, and indexing platforms. Collaborate with cross-functional teams to deliver features, improve practices, mentor engineers, and present technical guidance to stakeholders while ensuring platform reliability and scalability.