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

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.

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.

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.

TypeScript, Node, React, AWS, Kubernetes, GitHub Actions, Terraform, and Grafana. You'll own Minut's guest experience surface—messaging flows, guest app, and integrations that turn sensor events into delightful guest experiences. The team is 20+ engineers across product, platform, mobile, firmware, and ML.

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.

Mimecast★3.5 (31)· London

Build and maintain full-stack features using C# (.NET) and Java for backend services, React for user interfaces, and a cloud-native stack including AWS (SQS, S3, Bedrock), PostgreSQL, Elasticsearch, Kubernetes, and Grafana. Join a product engineering squad within the Governance, Compliance & Insights pillar that delivers enterprise-scale compliance and archiving for collaboration and email data from platforms like Slack and Microsoft Teams.

Mimecast★3.5 (31)· London

Build and maintain full-stack features using Java, C# (.NET), React, AWS (SQS, S3, Bedrock), PostgreSQL, Elasticsearch, Kubernetes, and Grafana. You will join a product engineering squad within the Governance, Compliance & Insights pillar, building services that help enterprise customers govern and archive collaboration and email data from platforms like Slack and Microsoft Teams.

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.

You will use C#, React, Oracle, Couchbase, Kafka/ActiveMQ/AmazonMQ, Prometheus, Grafana, CloudWatch, and Concourse to build and maintain end-to-end features, scalable APIs, and microservices for broadcast and video workflow solutions.

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.

TypeScript, Python, Rust, React, C++, Docker, and Kubernetes. You will build scalable software across Emotech’s AI products and customer platforms, productionising AI prototypes and models from the company’s speech and multimodal research teams.

JPMorgan★3.9 (20k)· London

You will build the next generation global-scale core banking platform using Go, Python, and/or Java, Kubernetes, Terraform, and cloud-native technologies, developing microservices, integrations, dashboards, and CI/CD pipelines. You will work on the Global Banking Platform team at JPMorgan Chase, with an initial secondment to a FinTech partner.

Work with Java, Go, Rust, or Python to design, build, and maintain backend services, APIs, and distributed systems for a regulated blockchain-based wholesale payment and settlement platform. Use AI-assisted development tools and build MCP servers, AI agents, and skills.

Durlston Partners· London

Backend roles use C++, Java, Rust, or Python; Frontend roles use React and WebGL. Full Stack engineers work across both. The company builds the foundational software and AI for the autonomous age, the operating layer that lets organisations task, control, and act on data from fleets of autonomous assets.

You'll work with Playwright, Cypress, Selenium, Postman, Insomnia, React, React Native, Maestro, BrowserStack, Percy, k6, Gatling, GCP, Grafana, LogRocket and AI-assisted testing tools. You'll join Nando's USA Technology team building digital products powering customer journeys (Locate, Menu, Payments, Orders, Loyalty, Identity) across web and mobile to support US expansion.

TypeScript, React, Rust, Effect, HTML, Material UI, Base UI, Ariakit, and Panda. They build an open-source platform unifying structured and unstructured data to improve simulation, optimisation, and automation of real-world systems.

You will work with C#, .NET, AWS (EC2, RDS, Lambda, S3), SQL Server, PostgreSQL, xUnit, GitHub, TeamCity, and Octopus Deploy. As a senior engineer at a UK insurance broker, you will drive TDD adoption and build an agentic AI development workflow. This is not a management role.

You'll work primarily with NodeJS, TypeScript, React, AWS, Kubernetes, Postgres, and Terraform to build and optimize high-throughput backend services for Bauer Media's advertising platform, where clients bid for space, control graphics, and view performance data in real time. You'll mentor junior and mid-level engineers while focusing on system performance, scalability, observability, and reliability as the platform replaces its legacy system.