Top Software Engineer Jobs in London

Lead the development of Runware's serverless platform by building core systems for AI workload management and providing technical guidance to the team.

The Senior Software Engineer will design and implement systems for AI integration, build scalable backend services, and mentor team members, ensuring high-quality systems that meet user needs.

As a Principal Software Engineer, you'll lead backend and IoT engineering for Defence projects, ensuring high-quality software delivery while mentoring engineers and implementing robust CI/CD processes.

Join a remote EU-based talent pipeline as a senior C++ engineer working on a custom engine or UE5. Maintain and develop game features and tools, collaborate across disciplines, and debug, profile, and optimize code for Windows PC strategy games.

Senior backend engineer role building scalable, resilient Go-based backend services and APIs for cloud environments (AWS/Azure/GCP). Work with containers, Docker, Kubernetes, TDD, and performance optimisation while collaborating with client teams in a remote-first consultancy.

As a Staff Software Engineer, you will lead the development of Apache Iceberg, enhancing data handling capabilities for large-scale systems, collaborating with teams, and architecting solutions for modern data lakes.

Lead the development of backend platforms for national security and defence clients, leveraging cloud technologies and Agile methodologies, while ensuring operational responsibility for services and collaborating in cross-functional teams.

Develop and enhance features for EnrollWise, contribute to a scalable software architecture, review code, collaborate on design and technical feasibility, and maintain software quality.

The Senior Staff Software Engineer will lead the architecture of the agentic platform, define shared service designs, partner with teams for reusable capabilities, provide technical leadership, and implement cost-management and evaluation pipelines.

As a Staff Software Engineer, you will develop backend services for the agentic platform, integrating AI capabilities and ensuring system reliability, security, and developer usability.

Embed with product engineering squads to own production reliability for Grafana Cloud databases (Mimir, Loki, Tempo, Pyroscope). Design and implement SLOs, automation, and fault-tolerant patterns; lead incident response and post-incident reviews; improve observability, alerting, and scalability for high-SLA multi-tenant environments; mentor engineers and influence product design for operability.

Lead re-architecture and modernization of a legacy C++ execution kernel, diagnose and resolve memory/concurrency/performance issues in production, drive technical direction, mentor peers, and collaborate across teams to evolve the platform toward a more open, service-oriented design.

Develop and maintain NedGraphics cloud products (OptiNedLink), build serverless AWS backends, design secure REST APIs and event-driven workflows, implement automated testing, optimize performance and scalability, enforce security best practices, integrate third-party APIs and ERP/PLM systems, and produce developer documentation and API specifications.

Develop and optimize performance-critical components of a low-latency trading platform (pricing engines, gateways, market-data, messaging). Own design, deployment, production support, observability, and architectural decisions. Mentor engineers, conduct reviews, and ensure reliability in cloud-native AWS and colocated environments.

Build and maintain low-latency trading infrastructure on Linux using modern C++ and Go. Work on pricing engines, connectivity, market-data pipelines, FIX integrations, messaging, observability, and production support. Own design, deployment, incident response, and continuous performance optimization.

Design, build, and operate scalable web applications, APIs, services, and AI-enabled workflows. Use AI tools across the development lifecycle, ensure reliability, performance, and observability, contribute to technical decisions, iterate from user feedback, and own production quality and delivery as part of cross-functional squads.

Senior Software Engineer on the Customer Analytics Engineering team building scalable backend services in Java (JDK11+). Design, develop, and maintain analytics platform features, optimize SQL for MySQL and Snowflake, troubleshoot production issues, improve architecture and performance, participate in code reviews, mentor teammates, and drive modernization and technical debt reduction.

As a Senior Fullstack Engineer, you will lead feature development from conception to deployment, ensuring user needs are met and maintaining high deployment frequency.

As a Lead Software Engineer at Anima, you will enhance existing products and develop new ones focused on healthcare technology. You will work with various technologies, join customer calls, and potentially transition into a managerial role while impacting patient care.

As a Senior Software Engineer, you'll enhance the Affiliate Marketing platform by designing reliable services, mentoring engineers, and ensuring system efficiency using Agile methodologies.

Deploy, test, and troubleshoot CHAOS software in customer environments; translate customer workflows into product requirements; design and build new software; integrate sensor data; develop and apply ML/AI solutions; collaborate with engineering teams and travel to customer sites and company offices as needed.

As a Senior Software Engineer, you will enhance our Affiliate Marketing platform through clean code, team collaboration, and mentorship, focusing on backend services and technical improvements.