Top AWS Jobs in London

Lead and grow a data engineering squad to design, operate, and secure a scalable self-service data platform. Define roadmap, enforce architecture and SRE best practices (CI/CD, IaC, SLOs), collaborate with product, analytics, security and vendors, and drive platform delivery and integrations.

Support senior architects in designing scalable, secure technology solutions; gather requirements from clients and stakeholders; participate in discovery workshops; translate business needs into architecture designs; create diagrams and technical documentation; research technologies; assess risks, dependencies, integrations, and estimates; and collaborate with engineering, cloud, security, and DevOps teams throughout delivery.

Designs and executes manual and automated tests for web, API, and backend applications. Develops reusable automation frameworks, regression suites, and test scripts using C#/.NET or Java. Tests REST APIs, integrations, databases, cloud applications, performance, and reliability. Collaborates with developers and product owners to investigate defects, participates in Agile ceremonies, integrates testing into CI/CD pipelines, documents results, and improves quality processes and practices.

Develop and maintain scalable Ruby and Ruby on Rails backend applications, RESTful APIs, microservices, and distributed systems. Work with databases, background jobs, caching, messaging, cloud platforms, Docker, CI/CD, and automated testing. Troubleshoot production and performance issues, participate in system design and code reviews, and collaborate with frontend, QA, DevOps, product, and client teams.

Define and standardise end-to-end LLM architectures and reusable AI solution patterns. Design data pipelines, RAG, prompt orchestration and CI/CD for safe production deployment. Set monitoring, evaluation and prompt-testing standards. Lead engineering teams, address product/data/security/legal constraints, and collaborate with stakeholders to deliver AI solutions for regulatory priorities.

The role involves building and maintaining ML and cloud infrastructure for training large-scale generative models. Responsibilities include designing GPU clusters, supporting distributed training, managing storage systems, and collaborating with researchers and engineers.

Design, build and maintain scalable, secure backend systems using Java and the Spring ecosystem. Lead architecture and API design, ensure quality through testing and observability, mentor engineers, drive delivery across initiatives, evaluate emerging technologies and AI capabilities, and collaborate with cross-functional teams to deliver client value.

Lead design and development of internal and customer-facing systems across underwriting, claims, finance, and compliance. Own backend services, APIs, and scalable infrastructure; drive architecture, deployment, reliability, and performance; automate workflows with product and operations partners; mentor engineers and set engineering best practices.

Design, develop, and deploy intelligent AI agents, optimize large language models, enable collaboration in customer interactions, and maintain backend systems.

This role involves building and operating a data platform, delivering reliable data products, and improving engineering workflows with AI and automation while mentoring junior team members.

Design, build, and maintain scalable, secure full-stack applications using Java and Angular. Lead integration and deployment of agentic AI, implement microservices and event-driven architectures, collaborate with data scientists, and promote CI/CD, testing, security, and best practices. Mentor developers and support the full software lifecycle in a hybrid enterprise environment.

The Associate Solutions Architect will design and integrate global tax and treasury technology solutions, working closely with architects and finance stakeholders to ensure compliance and efficiency in tax operations.

Build end-to-end web features, automate operational workflows, create internal tools and integrations (Airbnb, Stripe, Twilio, OpenAI), deploy AI-powered capabilities, and scale a reliable platform while working closely with founders and operations.

Hands-on lead responsible for designing, building, and scaling Base360.ai. Architect scalable systems, drive engineering standards, mentor engineers, implement AI/LLM workflows, build integrations (Airbnb, Stripe, Twilio), and automate operations to improve guest experience and operational efficiency.

Build and architect Base360.ai: design and launch booking, pricing, payments, operations, and AI-powered automation. Integrate platforms (Airbnb, Stripe, Twilio, OpenAI), scale systems internationally, and embed AI workflows to automate operations and optimize revenue.

Lead development and activation of Xurrent's UK&I partner ecosystem to generate partner-led pipeline and revenue. Recruit, onboard, enable and co-sell with partners, build joint GTM plans, forecast and manage partner-sourced pipeline, and support renewals and expansions through partner channels.

Build and maintain API and file-based integrations connecting client ERP/accounting systems to Prophix. Develop REST/SOAP integrations and JavaScript scripts, write SQL for ETL, support SFTP/cloud workflows, troubleshoot data issues, and document integration logic while collaborating with Professional Services and cross-functional teams.

Be a founding Forward Deployed Engineer partnering with customers to design, prototype, and ship AI-powered full-stack solutions. Translate user workflows into platform improvements, own projects end-to-end, influence product and technical roadmap, and help define the FDE function.

Lead technical design and development of complex C# applications. Provide technical leadership, apply best practices (TDD/BDD/DDD), optimize and refactor code, integrate systems, and work with cloud platforms and databases.

Join Trainline as a mid-level Site Reliability Engineer to improve platform reliability and observability, participate in incident response and on-call rotation, build and maintain monitoring/alerting, support AWS-hosted infrastructure using IaC and CI/CD (Terraform, GitHub Actions), collaborate with product teams, and write scripts and tooling to improve reliability and scalability.

Build and improve Trainline's infrastructure platform using Terraform and AWS, automate tasks with Node.js/Python, apply secure-by-default principles, test and deploy via CI/CD, collaborate with platform and engineering stakeholders, and deliver reliable, maintainable infrastructure changes.

Design, build and operate backend services in C#/.NET; own full development lifecycle, mentor teammates, improve reliability, observability, CI/CD, and scale microservices across AWS.

Design, implement and improve Trainline's infrastructure platform using Terraform and AWS. Build automation and tooling in Node.js or Python, enforce secure-by-default cloud patterns, test and deploy via CI/CD, mentor mid-level engineers, collaborate across teams, and manage multi-account, multi-region, and enterprise-scale platform concerns to deliver reliable, scalable infrastructure.

Senior individual-contributor responsible for hands-on implementation, performance, scalability, resilience, and operational excellence of a Java/AWS-based Risk Screening platform. Partners with architects and SREs, leads complex changes, optimises large databases, and mentors engineering teams to ensure reliable, high-performance production systems.

Own and operate cloud production infrastructure (GCP/AWS), manage Kubernetes clusters, automate via IaC (Terraform/Pulumi/Ansible) and CI/CD, build and monitor data pipelines (Argo), perform SRE incident response and level-2 support, and collaborate with data scientists and engineers to improve platform reliability and scalability.