2,918 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Senior Software Engineer
Senior full-stack engineer joining a small, early-stage team in Stockholm to build a new product alongside its founders — owning features end to end from architecture through deployment using TypeScript, React, and Node.js, with AI-assisted development tools.
Software Engineer
Builds source-backed knowledge tools from private conversations for institutional investors. The Software Engineer (Stockholm or Gothenburg) owns features end to end in a small senior team, working in TypeScript or Python on an event-sourced, real-time core with security built in.
Senior Software Engineer (m/w/d) – Hybrid in Frankfurt / Rhein-Main
Senior Software Engineer (hybrid, 2–3 days/week in office near Frankfurt) at equipme, a ~20-person startup building a SaaS platform for equipping employees and managing company resources. Day to day: design and run backend services and APIs with .NET/C#, Go and TypeScript on AWS, tune MS SQL/PostgreSQL, and occasionally extend Angular frontend modules.
Founding Engineer
Founding engineer at Ficus, an early-stage startup building modern payout infrastructure for life insurance carriers. You'll build the core platform end-to-end — beneficiary onboarding, secure money-movement backends, bank/insurer integrations, and internal tools — as one of the first technical hires.
Senior Robotics & Software Engineer
Senior robotics/software engineer at R3 Robotics (circu-li-ion) in Luxembourg, building control, task/path-planning, and digital-twin simulation software for AI-powered robotic dismantling of end-of-life EV batteries and motors. Core stack: Python/C++/Rust, ROS, PLCs, computer vision, and closed-loop control.
Founding Engineer Persistent Spatial Worlds (Unity + AI)
Founding senior Unity engineer at pre-revenue startup Vyry, building persistent spatial worlds and AI-context quests that get students to meet IRL. You'd shape Unity architecture, spatial persistence, multi-user sync, and AI-assisted pipelines. Equity-only compensation until the next funding round; join part-time or full-time, remote.
Agentic Systems Engineer Intern (Summer 2026)
Summer 2026 internship at Phygtl (San Francisco startup) working on Vyry, a mobile app that helps students meet in real life via coordinated campus quests. The intern builds context-aware, agentic AI logic on top of existing realtime systems (chat, voice, AR Meet), focusing on quest completion and retention.
Software Engineer
Full-stack software engineer at Cleve in Kuala Lumpur, working directly with the CTO to build and ship features end-to-end — the editor, AI layer (RAG pipelines, LLM integrations, agents), and real-time infrastructure — using React, TypeScript, Next.js, and Convex for a product with 40,000+ users.
AI Software Engineering Intern
AI software engineering intern at Cleve in Kuala Lumpur, owning full-stack features across a Next.js frontend and Convex backend while building RAG pipelines, LLM integrations (OpenAI, Anthropic, Gemini), embeddings/vector search, and prompt/eval experimentation — shipping to 40,000+ users alongside the CTO.
Software Engineer
Senior software engineer at Chaka, a Nigerian fintech giving users access to US and Nigerian stock markets. You own features end to end — requirements, design, implementation, testing, docs — building backend APIs, SDKs and microservices in Java/Spring Boot, plus web and mobile apps.
Software Engineer
Software Engineer (x10, onsite near Cambridge) at a fast-growing AI company, working across prototype-to-product projects: designing software, integrating it with hardware, sensors and custom devices, and picking up new tools as needed. Python is required; ML/deep-learning (TensorFlow, PyTorch), networking and embedded experience are valued. Open to graduates and experienced engineers.
Senior Systems Engineer - AI Infrastructure
Designs and builds low-level systems software for fault-tolerant, high-performance distributed GPU training — modifying internals of frameworks like PyTorch, NCCL, and CUDA, and working across GPU systems, high-speed networking, and distributed coordination, owning systems from design through production.
Senior Software Engineer
Senior engineer at Terra Security in Tel Aviv building production-grade backend and frontend systems that power its agentic AI-driven continuous penetration testing platform. Core stack is TypeScript, Node.js, and React, with cloud (AWS/GCP), Docker/Kubernetes, and LLM experience as strong advantages.
Software Engineer - Data Infrastructure Helsinki / Remote
Build the production data pipelines, quality-evaluation systems, and lineage tools behind Coragrid's private-company intelligence for investment teams. Daily work spans ingestion, transformation, and delivery of company data into APIs, CLIs, and retrieval workflows, using PostgreSQL, Qdrant, Rust/Python, Docker, and Linux-first tooling.
Software Engineer
Junior to mid-level full-stack engineer at an early-stage, investor-backed startup building an AI operating system for interior design and architecture studios. Day to day you build AI agents, automation and features end to end with React, TypeScript and PostgreSQL, while talking directly to customers.
Staff Software Engineer, Motion Planning
Staff engineer owning the design and production implementation of mission, behavior, and motion planning software for autonomous airport ground support vehicles. Core stack is C++ (ideally Modern C++) or Python on Linux, with ROS/ROS2-style middleware, at a Series A autonomous-driving startup with a RaaS model.