Top Tech Jobs & Startup Jobs in London

Develop, maintain, and execute automated test suites for web, mobile, and API platforms. Improve CI pipelines, track and report defects, mentor teammates, and contribute to quality processes and test frameworks across releases.

Design, develop, and maintain highly scalable microservices and backends (Java/Spring) for millions of users. Collaborate with product owners, perform code reviews, respond to production incidents, mentor junior engineers, participate in team ceremonies, and potentially share on-call duties.

Build and productionize ML systems for personalization, search, and recommendations. Apply statistical and ML models using Python and SQL, collaborate with stakeholders, and measure business impact across cloud environments.

Lead QA strategy and execution across web, mobile, and API. Combine hands-on manual and automated testing, mentor team members, improve automation frameworks and CI pipelines, track issues, align QA processes, and drive quality standards and documentation.

Lead and own global payments operations, metrics, fraud prevention, risk and compliance. Collaborate with product and engineering, recruit and manage distributed payments teams, investigate fraud, optimise acceptance and conversion, and act as primary partner with payment networks to resolve production issues.

Lead cross-team software projects: build plans, translate product goals into clear deliverables, run ceremonies, manage tickets and resources, coordinate external partners, track status, drive production issue resolution, and improve team processes and quality.

Maintain and improve cloud infrastructure across multiple countries, manage Kubernetes and CI/CD, optimize performance and costs, handle monitoring and security audits, lead deployments, and mentor junior team members.

Own QA for web and mobile releases: write and run manual and automated tests (web, mobile, API), build test frameworks, improve CI, track issues, mentor teammates, and influence requirements and quality processes.

Lead global paid user acquisition strategy and a multi-channel team across mobile, paid social, search and programmatic. Drive efficient growth through experimentation, attribution, automation and AI adoption, partnering with product, BI, creative and finance to scale campaigns, measurement and operations.

Own and enhance native iOS applications: build end-to-end features and UIs, integrate REST APIs and push notifications, optimize performance and localization, and manage releases across multiple regions while collaborating with a distributed team.