Barclays★3.9 (6.9k)· London

Build and run cloud services using Terraform or CloudFormation, GitLab, Python, and AWS/Azure/GCP, with Kubernetes orchestration. You will create a new digital platform capability transforming Barclays’ digital estate, focusing on customer identity and access management (CIAM).

This role leads the SRE team at Blockchain.com, architecting hybrid infrastructure across GCP, AWS, and on-premise data centers using Kubernetes, Nomad, Terraform, and Cloudflare Zero Trust. You will establish the multi-year platform and reliability strategy, own incident response, and mentor a global team of senior SREs.

Works with Kubernetes, Terraform, AWS/GCP/Azure, and systems languages (Rust, Go, Python) to build agent-driven automation for compute cluster lifecycle management. This team owns provisioning, updates, and decommissioning of clusters across major cloud providers and internal datacenters, ensuring high-bandwidth, secure-by-default infrastructure.

Work with AWS/GCP/Azure, Kubernetes, Terraform, CI/CD systems, GPU infrastructure, and ML training/inference pipelines to build and scale AI-powered search and knowledge tools. You will directly manage one or more infrastructure teams (5–15+ engineers, growing to 15–30+) as you establish Perplexity's London office.

Low Carbon Contracts Company★4.4 (7)· London

The role uses Python (preferably PySpark), SQL, Azure (Data Factory, Synapse, Databricks, ADLS), and other cloud platforms. The team develops and maintains LCCC’s data warehouse, data pipelines, and governance artefacts to ensure reliable, integrated data for reporting.

Lead a ~132-person engineering org (5 direct reports) building financial services for Africa on Python/GraphQL, Postgres/Redis, Kotlin, Swift, TypeScript/React, GCP, Kubernetes, and Terraform—including AI-powered voice and digital agents handling 10M+ monthly interactions.

You'll work with JavaScript, ElasticSearch, OpenSearch, MongoDB, Apache Kafka, EKS and Kubernetes on Ripjar's Labyrinth Screening SaaS platform, which automates detection of financial crime for banks and governments. This role leads technical decisions and architecture for scaling the platform.

Build features across Svelte/TypeScript front end and Python (FastAPI/Django) back end. Tab is a profitable YC-backed travel fintech processing thousands of hourly payments for 100,000+ global tourism businesses.

Senior Data Engineer role at a private equity real estate firm, building cloud-based data pipelines and ETL processes using SQL, Python, Snowflake, AWS/GCP, and APIs. You'll integrate internal and external data sources, develop analytics solutions supporting investment decisions, and mentor two junior engineers while owning technical delivery.

You’ll build scalable data pipelines and engineering solutions using Python, SQL, AWS/Azure/GCP, Spark, Kafka, Airflow, and CI/CD for a technology consultancy delivering secure, data-driven analytics and intelligence projects.

Samsara★3.6 (32)· London

Work with Golang, TypeScript, React, GraphQL, and React Native. As a new grad, you’ll build backend infrastructure for an IoT platform, full-stack web features, mobile app infrastructure, or embedded software that runs on Samsara hardware.

Elliptic★0.0· London

You'll lead a DevOps team owning Kubernetes/EKS platforms, service meshes (Istio/Linkerd), GitOps (Flux/ArgoCD), Terraform, Vault, OPA, and CI/CD security tooling. The company provides blockchain analytics to trace and disrupt illicit cryptocurrency laundering. The role is a hands-on team lead setting infrastructure, automation, and reliability direction.

Build and ship end-to-end features using TypeScript, Vue.js/Nuxt.js, Node.js, Docker, AWS, MySQL, and AI-assisted tools like Claude. You’ll own infrastructure and deployment for &Dine’s online food marketplace connecting independent makers with customers. Join a lean engineering team of four.

Lead architecture design for scalable, secure platforms using AWS/Azure/GCP, Kubernetes, Docker, Terraform, GitHub, CI/CD, Kafka, and microservices/event-driven patterns. This role at RX Global—a global events and exhibitions company—partners with worldwide engineering and DevOps teams to align technical decisions with business goals.

Build and operate the distributed systems serving Claude to millions of users, using Python or Rust, Kubernetes, and cloud platforms (AWS/GCP/Azure). The Inference team handles request routing, autoscaling, and fleet orchestration across diverse AI accelerators.

Lead a UKI team of Sales Engineers selling Cohesity’s AI-powered data security solutions, including Data Protection, Analytics, Storage, Virtualization, Database, and Cloud. You will deliver architectures, product demos, and proof-of-concepts for enterprise customers, while mentoring the team and driving sales strategy.

Founding Product Platform Engineer working full-stack with Python, FastAPI, React, TypeScript, and SQL (BigQuery/Snowflake). Build the platform layer for a decision platform that helps high-stakes teams explore outcomes and understand uncertainty, translating complex AI workflows into repeatable B2B products. As the first dedicated product engineering hire, you will architect platform foundations including auth, permissions, and APIs.

You'll work with Python, LLM frameworks (LangChain, LangGraph), MLflow, and cloud ML platforms (GCP Vertex AI, AWS SageMaker) to build models and pipelines for Compare the Market's AI platform, powering insurance pricing, customer predictions, and personalisation.

You will develop predictive ML models for demand forecasting and pricing optimization using Python, scikit-learn, pandas, and GCP. You own the full model lifecycle—design, testing, production deployment—for global retail brands like New Balance and River Island, working alongside the Principal Data Scientist on a lean, expert team.

You'll work with Python, TypeScript, AWS, Azure, GCP, PyTorch, LangGraph, LangChain, DSPy, Langfuse, and Inspect, building AI products for the UK Government across health, education, and planning. You'll prototype, evaluate, and deploy AI solutions in small teams, owning problems from idea to production.

You'll work with React, TypeScript, Node.js, Next.js, GraphQL, Postgres, and AWS on an AI-native platform that empowers private investors to manage their portfolios.

Senior Full Stack Engineer working with Python (Django, FastAPI), TypeScript, React, Astro, Svelte, PostgreSQL, AWS, Terraform, and frontier AI models via Amazon Bedrock. Build and scale AI products within small cross-functional teams, owning everything from infrastructure and APIs to user-facing interfaces. Hands-on role with significant ownership, including mentoring and shaping technical direction from discovery to deployment.

Design and scale low-latency backend systems using Python, Go, or Rust, with streaming pipelines (Kafka, Flink, Spark), SQL/NoSQL data systems, and cloud infrastructure (AWS/GCP, containers, CI/CD). The team builds real-time security infrastructure that detects risk and prevents attacks inside transaction flows for wallets, exchanges, and fintech platforms.

You will work with Svelte, TypeScript, Python, FastAPI, Django, PostgreSQL, and AWS. Tab is a YC-backed London startup building a payments and discovery platform for independent tourism businesses. You will join a lean team of nine as one of the first developers.

Lead projects developing scalable web apps for global financial clients using React, TypeScript, modern CSS (Flexbox/Grid, SASS, Material UI), Redux, Webpack, and Jest/Mocha. You will mentor engineers, drive front-end strategy, and work with DevOps/CI/CD and containerisation (Docker/Kubernetes).