Top Software Engineer Jobs in London

Execute scheduled, ad hoc, and release-milestone software tests; review test cases; report defects in issue-tracking systems; communicate status in standups; and collaborate with software test managers and development teams. The role requires knowledge of QA methodologies, black-box, grey-box, and white-box testing, strong communication and organization, independent and team-based work, and participation in planning and professional meetings.

Deploys, supports, and improves software products and services while maintaining customer satisfaction and SLA performance. Responsibilities include investigating and resolving tickets, managing delivery requirements, preparing estimates and quotes, coordinating with development teams, identifying product and support improvements, managing risks, protecting customer information, and adhering to GDPR and information security requirements. The role is primarily remote with occasional travel to Leicester offices and customer sites.

Design, build, and operate scalable cloud-native SaaS products using full-stack engineering practices. Drive platform modernization, API-first architecture, microservices, testing, deployment, and engineering excellence. Partner with Product and Design to solve customer problems, contribute to technical strategy, mentor engineers, and promote modern DevOps, CI/CD, observability, and automation practices.

Join a fast-paced team building a new digital bank platform from scratch. Develop backend services using JVM languages, design distributed systems, work on database development, and contribute high‑quality engineering across the platform.

Design, build, and scale IoT hardware for the Energy Network, ensuring secure connectivity, device security, and integration with cloud services.

Lead Machine Learning Engineer to oversee AI projects, guide technical direction, manage teams, and innovate in building scalable ML systems.

Develop and enhance Neo4j Graph Analytics for Snowflake, focusing on SQL-facing APIs, build pipelines, and improving security while collaborating with clients.

As a Senior DevOps Engineer at Scribe, you will design and optimize AWS cloud infrastructure, manage CI/CD pipelines, and support product development while ensuring reliability and performance of services.

Lead architecture and technical direction for DEMS, designing scalable, secure backend services and integrations. Mentor engineers, drive reliability, observability, performance improvements, and cross-team solutions. Contribute code in high-leverage areas and partner with product and design to deliver mission-critical, production-grade systems.

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, implement, and ship customer-facing AI features end-to-end. Architect scalable, secure systems for high-volume data and complex workflows. Improve grounding, citations, and evaluation for auditable AI outputs. Collaborate with Product and Design to iterate and optimize latency, cost, and user experience.

Design, develop, and support scalable software solutions using TypeScript, JavaScript and Angular. Work independently in an Agile team, write clean code and unit tests, troubleshoot performance and integration issues, collaborate with product and stakeholders, and contribute to continuous improvement and AI-enabled initiatives.

Lead quality strategy and test automation for personalization, recommendation, experimentation and consumer intelligence. Build and maintain automated test frameworks (API, integration, contract, E2E), integrate quality into CI/CD, validate ML-driven outputs and consumer journeys, manage test data/environments, and coach engineers to improve release reliability and engineering quality.

Design, build, and maintain production-grade microservices and web applications to power personalization and recommendations. Implement model-serving and inference integrations, ensure resiliency, observability, and low-latency performance, work with event-driven and caching patterns, collaborate with AI/ML and data teams, drive technical designs, mentor engineers, and operationalize services for production readiness.

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.

Design and build backend services for custody operations (asset transfers, settlement, account state). Improve scalability, resiliency, and performance; maintain systems ensuring asset safety, transaction accuracy, and operational integrity. Participate in on-call rotation and collaborate with product, infrastructure, and security teams.

As a Software Engineer, you will design, build, and operate backend services in Go, develop microservices and APIs, and manage deployment workflows using Docker, Kubernetes, and CI/CD practices.

The Senior Software Test Engineer will lead test engineering initiatives, design automated test frameworks, and advocate for quality within cross-functional teams.

The Senior Software Engineer will build indexing systems and data pipelines for an agent-native search platform, focusing on data ingestion, processing, and organization for AI consumption.

Seeking a Senior Software Engineer to work on rendering APIs and graphics software for PlayStation games, including advocating for game developers and platform teams, with a focus on coding and debugging.

The Senior Staff Software Engineer will design, develop, and maintain backend systems for Databricks, ensuring high performance and reliability while mentoring junior engineers and leading projects.

Design, build, and maintain cloud-based data pipelines and infrastructure on AWS, integrating on-prem and cloud flows. Implement IaC, CI/CD, containerization, observability, and automation to ensure high-throughput, reliable data ingestion and processing for autonomous systems.

Own and extend simulation tooling for autonomy: integrate simulators with the production autonomy stack, ensure determinism and reproducibility, run large-scale cloud scenario execution, build evaluation and triage tooling, author scenarios, and maintain pipeline performance and coverage for V&V and release gating.