Lovable★4.0 (43)· London

Uses Go, Rust, TypeScript; AWS, Azure, Google Cloud, Cloudflare; Kubernetes, Terraform, Temporal, OTEL, CI/CD; PostgreSQL, ClickHouse, Firestore, Spanner, BigQuery. Builds the platform for Lovable Enterprise enabling secure, cloud-agnostic deployment, defining architecture for sandboxing, networking, encryption, identity, and mentoring engineers.

Koinly★3.0 (1)· London

Work with React 19, TypeScript, TanStack (Router, Query, Table), Radix UI, Mantine, Tailwind CSS v4, Vite, Vitest, Storybook, Highcharts, Sentry, Bun, and RabbitMQ on a data platform that reconciles crypto transactions and tax obligations for Koinly’s web application, with a React Native mobile app joining scope later.

Koinly★3.0 (1)· London

You will work with TypeScript on Bun, RabbitMQ, Redis, PostgreSQL, Vitest, Sentry, and Rust. The team owns the distributed data-processing backend that ingests, normalizes, and reconciles on-chain and exchange data for Koinly’s crypto tax calculation product.

Lovable★4.0 (43)· London

Build enterprise deployments using Go, Rust, and TypeScript on AWS, Azure, and Google Cloud, with Kubernetes, Terraform, and Temporal. You will build the platform that allows large customers to run Lovable securely and at scale across every major cloud provider.

Nuffield Health★3.2 (939)· London

You will work with Java 21, Spring Boot, Maven, RabbitMQ, Apache Camel, Git, GitHub Actions, Docker, Azure DevOps, Terraform, Ansible, and SQL databases. The Integration Squad designs, develops, and supports microservices and APIs for Nuffield Health's digital healthcare platforms, enabling secure connectivity across internal and third-party systems.

You’ll design and build high-performance software using Rust, C/C++, React, REST APIs, SQL, Redis, and NGINX. The team is rebuilding legacy institutional investment management systems into a cloud-native platform covering portfolio management, trading, risk analytics, and AI. This is an early-stage, small collaborative team.

A full-stack or backend specialist will use C# and .NET Framework, SQL Server (T-SQL), RESTful APIs, Azure DevOps, and messaging queues (RabbitMQ, Kafka) to build secure integration pipelines and backend services. They will execute a critical integration programme for an international Wealth Management firm to connect core internal and third-party systems.

As a Backend Software Engineer, you'll use Go or Node.js to build and scale the company's core real-time messaging platform, working on low-latency Pub/Sub services and state synchronization in an AI-first engineering environment.

You will write performance-critical software in Rust, working across backend services, APIs, and infrastructure—with frontend in React/Next.js/TypeScript when needed—for a global financial services firm. The stack includes Tokio, Azure, Kubernetes, Python, SQL, and CI/CD tooling. This is an early-career engineering role with end-to-end ownership.

You will work in a Rust stack with Python at API boundaries, using Kafka, PostgreSQL/TimescaleDB/PostGIS, gRPC/protobuf, and Kubernetes. The team builds real-time intelligence infrastructure that ingests high-volume data streams, processes them in real time, and surfaces actionable insights. This is a small, high-impact engineering team inside a scaling company.

Build and launch AI-powered products using TypeScript, React, Node.js, Rust, Azure, Docker, and LLM APIs (OpenAI, Anthropic). As the founding product engineer, you’ll own the full stack—from frontend and backend to AI workflows—and work directly with founders to shape product direction from 0 to 1.

TypeScript, Python, Rust, or C++ for a full-stack desktop application, backend for live data ingestion, and the algorithmic layer bridging research and product. This role is at a stealth-mode AI startup building a proactive AI assistant that maintains a persistent model of user work history. As a Founding Senior Engineer, you will work directly with AI researchers in a small team.

DNEG★3.1 (36)· London

Design, build, and maintain high-performance RESTful APIs, microservices, and event-driven architectures using Python, PostgreSQL, and Redis. You will integrate generative AI models (ATMAN, VAANI) into production backends for a company operating at the intersection of enterprise Media Asset Management and generative media.

You will work with JavaScript (Angular), TypeScript, Python, FastAPI, Tailwind CSS, Docker, Kubernetes, and AWS. As part of a 13-strong Full Stack team, you'll build features for Urban Jungle’s insurance platform, collaborating with Product, Commercial, and Data.

Backend services using Python, Node.js, Java, and Go on AWS/GCP/Azure with Docker, Kubernetes, Kafka, RabbitMQ, SQL/NoSQL, and CI/CD. You will design, build, and support distributed systems for production-scale traffic, owning architecture and mentoring engineers.

Work with Python, Node.js, Java, Go, SQL, message queues, caching layers, Docker, Kubernetes, AWS/GCP/Azure, CI/CD, and optionally Kafka, RabbitMQ, Terraform, or Pulumi. You will design and build production-scale backend services, own full system lifecycles, and shape engineering standards.

Backend Engineer role working with TypeScript, Node.js, Kafka, RabbitMQ, or SQS for event-driven and microservices architectures. You will build scalable backend services, APIs, and distributed systems for a FinTech platform that modernizes complex financial processes for institutional clients. The cross-functional team uses AI-assisted development tools.

Work across the stack with React, TypeScript, and Node.js or Golang on privacy-focused systems and architecture that keep users' location data inaccessible. As part of Wheely's small core-engineering team, you'll collaborate with Product Managers, Designers, and Software Engineers to shape solutions from concept through production.

Java, Spring Boot, React/Angular/Vue.js, PostgreSQL/MySQL, REST APIs, AWS/Azure/GCP, Docker/Kubernetes, Git, Maven/Gradle, and CI/CD. You will design, code, test, and maintain scalable Java applications for mission-critical systems as part of an agile squad.

Durlston Partners· London

You'll work with C++, Java, Rust, Python, TypeScript/JavaScript, Angular, or React. The deep tech company builds software for humanitarian, surveillance, and defence applications. Lead engineers own technical decisions for a core enterprise product and mentor small teams of 2–3.

Wand is hiring a Senior C++ Reverse Engineer to work with C++, the Windows platform, Unreal and Unity game engines, and disassembly. You will own the game engine SDKs, hooking, and cross-DLL machinery that let the company read game state in real time to power mods, maps, and tools for players across thousands of PC games. This is a senior individual contributor role on the native team.

You'll set technical direction for a squad modernising a billing pipeline using TypeScript, Node.js, NestJS, PHP 8.x, Symfony, RabbitMQ, Kafka, SQS, PostgreSQL, GitLab CI/CD, and Grafana. The Interstellar Squad owns the mission-critical, event-driven billing run for Wireless Logic’s IoT connectivity platform.

You will lead a team using TypeScript, Node.js, and React on AWS serverless, microservices, and event-driven architectures. The Affinidi Elements team builds a decentralized digital identity platform that gives users control over their data. You will guide the engineering team in delivering high-quality, secure features.

Senior Software Engineer working with **Rust, Golang, or TypeScript** to design, build, and operate scalable systems. You will create and evolve services for the **USA market’s customer digital experience**, including payments, orders, loyalty, and web/mobile applications.

Ocean Infinity★3.0 (5)· London

Leads a team of backend and frontend engineers using C#, Python, React or Angular with TypeScript, containerised microservices (Docker, Kubernetes), and event-streaming services (RabbitMQ, Kafka). The team builds systems for technically complex products that transform operations at sea using IoT and distributed networks. The role reports to the Director of Software Engineering.