Top Software Engineer Jobs in London

Lead and deliver technically complex backend and full-stack projects, simplify architecture, mentor engineers, use AI-assisted tooling, and partner with product and design to build reliable, high-impact solutions.

Lead design, development, and deployment of low-latency screening systems. Provide technical leadership, mentor engineers, drive architecture and CI/CD, collaborate with product and stakeholders, ensure scalability, performance, security, and deliver roadmap priorities.

Define and implement the technical direction for an enterprise deployment platform across AWS, Azure, and GCP. Build cloud-agnostic, secure sandboxing, networking, encryption, and identity systems; develop internal platform services to speed product teams; mentor engineers and collaborate with enterprise customers and cloud providers on complex infrastructure problems.

Lead technical direction and modernise international commerce platforms. Design scalable integrations for product, pricing, fulfilment, marketplace and partner flows. Champion engineering excellence, DevOps practices, reliability, observability and run-first ownership. Mentor engineers, align multi-team delivery and shape technology strategy to support international growth.

Lead technical direction and modernise international commerce platforms. Design scalable integrations for product, pricing, fulfilment, partner/marketplace flows. Promote engineering excellence, DevOps ownership, observability, and mentor teams while aligning technology strategy with business goals.

Own and build enterprise-grade API features (usage insights, cost controls, RBAC, data residency). Design scalable C#/.NET backend services, ensure production reliability (on-call, SLOs, contract testing), collaborate across teams, and deliver governance and compliance capabilities for large organizations.

Design, build, and maintain large-scale data pipelines and distributed systems to ingest, process, and serve petabytes of vehicle data. Collaborate with ML and CV teams, mentor junior engineers, define long-term product strategy, and ensure robust, testable infrastructure using cloud and orchestration tools.

Lead architecture, design and delivery of scalable, cloud-native microservices for retail trading. Provide technical leadership, ensure observability and resilience, drive CI/CD and operational excellence, and mentor engineering teams.

As a Staff Software Engineer, you will develop robust software solutions, provide technical leadership, mentor engineers, and innovate within the commercial trading domain.

Design, build, and own disposable isolated microVM sandboxes and related runtime infrastructure for AI coding agents. Improve reliability, performance, and security across macOS, Windows, and Linux; lead architecture, mentor engineers, engage open-source communities, participate in on-call rotations, and collaborate with Product and adjacent teams.

Provide technical leadership across multiple teams by shaping technical strategy, designing scalable distributed backend architectures, guiding architectural decisions, mentoring senior engineers, and improving reliability, observability, testing, and operational excellence. Partner with Product and Operations and contribute hands-on to critical systems powering millions of payment transactions.

Join an early engineering pod to own end-to-end delivery of EDUKATE.ai features. Work full-stack, collaborate with stakeholders, use AI-assisted development, uphold TDD and code-review standards, coach teammates, and help shape engineering practices and product outcomes.

Design, implement, and maintain cloud-native treasury and liquidity management services using Azure and .NET. Build scalable, reliable systems, implement CI/CD, observability, testing, and participate in on-call rotations while mentoring engineers and improving team processes.

Build and maintain high-performance, data-driven web applications for market data and trading services. Design full-stack solutions, implement features, write tests, support production, participate in planning and reviews, mentor engineers, and produce documentation and specifications.

Lead technical direction for a multi-ecosystem libraries platform: design ecosystem-agnostic indexing, build orchestration, and remediation automation from CVE detection to verified release. Drive AI/agentic patching strategy, mentor senior engineers, define SLOs, own reliability and incidents, and onboard .NET, Go, and Rust ecosystems while partnering across org teams.

Lead and own platform architecture across Infrahub ecosystem, implement high-impact architectural improvements, reduce technical debt, champion AI-first engineering, provide hands-on technical leadership, mentor engineers, and collaborate with product and leadership to ensure scalable, extensible systems.

As a Senior Software Engineer, you will develop and maintain Alpaca's platform services, including event streaming infrastructure and authentication systems, while ensuring software quality and reliability.

Lead the development of software solutions for a logistics platform, overseeing technical strategy, mentoring teams, and ensuring high-quality software delivery.

Lead architecture and technical direction across the full stack, solve ambiguous cross-cutting problems, deploy LLM-powered features into production, improve reliability and scale, mentor engineers, and make strategic build/buy and platform decisions that shape long-term product delivery.

Lead decomposition of a PHP monolith into Go microservices, design and operate scalable distributed systems (Kafka, Temporal, OpenSearch, Memgraph), integrate network telemetry and third-party APIs, maintain Terraform-managed cloud infrastructure, enforce SLAs/SLOs and CI/CD quality, mentor engineers, participate in on-call rotations, and drive platform architecture and reliability.

The Senior Software Engineer ensures the reliability and performance of the Mural editor, collaborates on technical projects, and designs APIs for real-time collaboration. Responsibilities include product engineering, mentoring, and improving team processes while focusing on performance and developer experience.

Lead the Market Making Engineering team in developing real-time quoting systems, collaborate with stakeholders, and enhance software and processes.

Lead architecture and implementation of Chainguard Repository services: build and operate high-availability backend systems in Go, design package registries and APIs, drive scalability, reliability, observability, and mentor engineers while partnering across teams to expand artifact support.

The Senior Software Engineer will define technical foundations, support product scaling, mentor junior engineers, and drive system improvements.

As a Senior Software Engineer, you will improve code structure, lead projects, and mentor team members while focusing on Android application development.