Top Software Engineer Jobs in London

The Senior Software Engineer will lead the Core Data team to improve APIs, systems, and data pipelines, focusing on backend engineering and team mentoring.

Senior engineer who designs and develops APIs and services, mentors engineers, works in Agile teams, participates in on-call rota, and helps drive a cloud migration to GCP. Collaborative, experimentation-focused role using C#, Node and React.

As a Staff Software Engineer, you'll lead full stack projects, mentor teams, ensure code quality, and influence engineering practices to deliver client-focused software solutions, with a strong emphasis on AI integration.

The Senior Software Engineer will lead the delivery of software projects, practice TDD, mentor developers, and influence technical direction while writing code and collaborating with clients and teams.

Lead design and implementation of high-performance agent runtimes, backend services, and self-hosted model/agent infrastructure. Build low-latency execution systems, real-time data pipelines, telemetry loops, CI/CD for zero-downtime deployments, and ensure fleet reliability on AWS/EKS.

Lead the architecture of Tide's agentic platform, ensuring reliable, scalable services. Collaborate across teams to design APIs and integration standards, focusing on developer experience and analytics.

The Staff Software Engineer will develop backend services for Tide's AI platform, integrate components, ensure reliability, and shape AI engineering patterns.

The Staff Software Engineer will design and manage end-to-end data pipelines, ensuring data quality and governance while collaborating across Java and Python systems, including event schema design and AI tooling.

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

As a Senior or Staff Software Engineer focused on SRE, you will optimize performance, manage infrastructure with code, drive observability, and collaborate with teams to enhance system reliability and efficiency.

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.

Lead SRE/DevOps practitioner driving CI/CD, automated testing, containerization, dependency upgrades, secure deployments, observability, and resilient cross-datacenter topologies. Works hands-on with development teams to implement TDD, test data/masking, Renovate, Liquibase, Ansible, Docker/OpenShift, and build tooling to enable safe, rapid release cadence.

Lead design and delivery of large-scale, cloud-native backend systems. Own end-to-end solutions, define architecture and engineering standards, investigate production issues across environments, mentor and hire engineers, and drive technical direction and adoption of new tools (including AI) to improve developer velocity and reliability.

Own and deliver complex backend features end-to-end for cloud-native banking systems. Provide technical leadership on architecture, code quality, incident response, and hiring. Mentor engineers, collaborate with Product to translate requirements, and ensure scalable, secure, high-performance production services.

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.

Develop and refine Arene SDK components and hardware-agnostic abstraction layers using modern C++ for embedded, resource-constrained automotive systems. Collaborate with global teams to accelerate software delivery, ensuring safety, quality, and robust integration with vehicle systems.

Lead the technical direction and hands-on development of Coder’s agentic engineering systems. Build production software in Go, with React and TypeScript as needed, and evolve agent execution, tool use, context management, streaming, and long-running workflows. Make architectural decisions, lead complex projects, improve reliability and performance, collaborate with Product and Design, and mentor engineers. The role requires distributed systems expertise, LLM and agentic workflow experience, and familiarity with AWS and cloud-native infrastructure.

Design, build, and operate highly reliable, scalable CI infrastructure and test systems across multiple clouds. Develop intelligent test selection, merge queue management, incident automation, flake detection, and developer-facing tooling to improve developer productivity and CI reliability at scale.

Design, develop, and implement custom ServiceNow applications; gather requirements from stakeholders; customize and integrate ServiceNow with external systems; perform testing and ensure coding standards; document solutions and provide ongoing support; collaborate with admins and IT teams to deliver scalable ServiceNow solutions.

The software engineer will develop AI tools for sustainability reporting, collaborating on product strategy and ensuring code quality while leveraging LLMs.

The Senior Software Engineer will design and maintain scalable systems, improve system performance, mentor engineers, and support on-call responsibilities.

Lead embedded and real-time C++ development for a regulated medical device: design hardware abstraction, device drivers, and data acquisition; define technical strategy; ensure IEC 62304-compliant software quality; collaborate with FPGA/electronics teams; mentor engineers; contribute to risk management and system integration in a safety-critical clinical environment.

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.