You'll work with Python and/or TypeScript, using full-stack JavaScript or backend Python. The role is a founding engineer at a stealth AI company backed by a £100M bootstrapped founder with three successful exits.

You'll work with JavaScript, TypeScript, React, HTML5, CSS, and server-side rendering to build production web applications and responsive interfaces. As a founding engineer at Hyre AI Limited, you'll shape the frontend architecture from an early stage.

Lead Front-End Developer with React and TypeScript, working on payment and point-of-sale technology for live events. Responsible for front-end architecture, design system, shared component library, payment flows, and real-time data integrations. Will mentor a small team and own tooling, standards, and CI/CD release pipelines.

You will work with JavaScript/TypeScript, SQL/NoSQL databases, and cloud infrastructure across frontend, backend, data pipelines, and APIs. The team builds an AI-powered investment platform for retail investors to create, backtest, and automate personalized strategies. The FCA-authorised company also integrates with financial data, payments, and custody platforms.

You will use Python or JavaScript with low-code platforms like Zapier or n8n and integrate LLMs and AI via REST APIs. You will identify and automate manual inefficiencies across the business, building internal automation ecosystems at Goodlord, a platform used by around 3,000 letting agents.

You will own an existing production React/TypeScript application across web, iOS, and Android, integrating with Python/FastAPI backends and managing CI/CD pipelines. The team builds a computer-vision platform that turns video data into actionable insights. You will drive frontend architecture on a small, collaborative engineering team.

Work with C#, Python, TypeScript, or JavaScript; APIs; databases; and Git. Build features across the frontend and backend for JivPad, an AI-powered communication platform providing real-time call assistance and in-person language translation.

You will build frontend applications using React and TypeScript, develop reusable UI components, and work on real-time features with WebSockets and GraphQL. The company builds a suite of real-time products for enterprise customers in specialized financial markets. The small, experienced engineering team offers significant ownership from day one.

Zencargo★1.8 (6)· London

Works with TypeScript, Python, Kotlin, AI-assisted development tools, APIs, webhooks, databases, n8n, LLM apps, cloud infrastructure, Terraform, and CI/CD. Embeds with operations teams to automate freight and supply-chain workflows, replacing manual processes with software and AI-driven solutions. Integrates with internal Zencargo services, carrier platforms, and third-party APIs.

You will work with TypeScript, Python, Kotlin, APIs, webhooks, databases, event-driven workflows, AI-assisted tools, n8n, LLM apps, and cloud infrastructure. This role embeds with operations teams to solve freight logistics problems by turning manual workflows into automated, AI-handled platform logic.

You will build frontend applications with React, TypeScript, JavaScript (ES6+), GraphQL/Apollo, Material UI, and WebSockets. This is for an early-stage company creating a real-time platform for enterprise financial markets, where you will own features alongside product and backend engineers. The team is small and experienced.

Lead a team of engineers building open-source workflow orchestration for n8n. This first-line manager role focuses on either the Governance & Observability team (audit logs, admin controls) or the Licence & Billing team (subscriptions, payments, usage tracking). You will work with modern SaaS technologies in a high-growth environment, directly managing engineers.

Engineering Manager for n8n, an open workflow orchestration platform. You will lead an engineering team focused on either Governance & Observability (audit logs, monitoring, admin controls) or Licence & Billing (subscriptions, payments, metering). This is a first-line engineering leadership role.

You will write scripts in JavaScript or Python using Node.js, interacting with APIs and databases like Postgres to automate data entry and workflow tasks for a London-based partner. As part of a small, fully remote software agency, you will build practical integrations, admin panels, and automated tools that connect internal systems and language models.

Build and scale real-time pipelines, analytics infrastructure, vector databases, and data workflows for an AI assistant that automates property management operations. Work with Python, Apache Spark, Airflow, Kafka, Elasticsearch/OpenSearch, MongoDB, vector databases (Qdrant, Milvus, pgvector), Pandas, and Polars. This is an early data hire with input into architecture decisions.

You'll work with Python (FastAPI), JavaScript/TypeScript (React), Docker, Postgres, Kafka, and Redis. Your project builds a dataset to evaluate AI coding agents by creating realistic simulated developer environments, designing challenging tasks, and writing verification tests.

You'll co-architect and deploy production AI agents with customers using Python, JavaScript, and LangChain's frameworks (LangGraph, LangSmith). The Deployed Engineering team at LangChain works directly with enterprises building and operating AI agents in production, helping turn prototypes into reliable systems through POCs, architecture design, technical advisory, and post-deployment support across the full customer lifecycle.

Develops modern web applications using Angular, TypeScript, RxJS, and REST APIs on a cloud-native AWS platform. Works on a globally used flagship product, collaborating with product, UX, backend, and ML engineers.

You will work with TypeScript/JavaScript, React, Playwright or Cypress, Azure, and CI pipelines (Azure DevOps/GitHub Actions) to own quality for a modern React website augmented with an AI assistant, serving data exploration, charts, and dashboards. You will define test strategy, build automation frameworks, and test AI behaviour including guardrails.

You will work with React, Next.js, Node.js, Python (FastAPI), Docker, and cloud platforms like Cloud Run. You will build and accelerate Sherwood, a platform that houses project data, monitoring, and verification outputs for nature-based carbon projects and ecological restoration. This is a senior individual-contributor role on a small, high-impact team.

You will work with React, Tailwind, Node.js, tRPC, PostgreSQL, and Elasticsearch to build and scale a B2B property data platform that integrates thousands of data sources. As a hands-on lead, you will provide architectural oversight across frontend, backend, and data infrastructure while mentoring senior and mid-level engineers.

Work with React and modern JavaScript/TypeScript to build high-performing, scalable front-end platforms at extreme scale. Collaborate with top-tier engineers across frontend, backend, and infrastructure in an elite technology company.

You'll work with Okta, Google Workspace, GitHub, macOS endpoint management, n8n, APIs, scripting (Python, JavaScript, Bash), REST APIs, and webhooks. n8n is an open workflow orchestration platform enabling AI-driven automation for technical teams. This is the first direct IT hire, shaping the function from the ground up.

In this Senior Full Stack Engineer role, you'll work with TypeScript, React, Node.js, PostgreSQL, Redis, and Kubernetes to build AI-powered B2B SaaS workflow and infrastructure software for scaling organizations, owning customer-facing features from concept to production, developing scalable backend services and APIs, and collaborating with a small, talented team of designers, engineers, and leadership.

Work with Python, FastAPI, TypeScript/JavaScript, Next.js/React, PostgreSQL, Redis, and GCP or AWS. Build autonomous AI agents handling tenant engagement, viewing bookings, maintenance coordination, and landlord communications across voice, WhatsApp, SMS, and email for real estate agencies. Join a team of CTO + 4 engineers.