2,916 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Senior/Staff Software Engineer, AI Platform
Senior engineer owning the AI platform at AllSpice: building evaluation/observability tooling, data pipelines, and internal apps that power its generative AI products for hardware/circuit design. Stack: Python, TypeScript, SQL/Postgres, Langchain/Langfuse, Vue, GitHub Actions, Docker/Terraform on AWS.
Senior Software Engineer, Platform
Senior engineer owning architecture and delivery across Alchemi's core platform — AI that speeds up drug development for pharma companies and CROs. Full-stack range (backend, front-end, DevOps) with Python at the centre, on a small senior NYC-based team with a two-week release cadence.
Sr. Manufacturing Systems Engineer
Base Power, an Austin, TX energy startup, is hiring a Sr. Manufacturing Systems Engineer to deploy, sustain, and improve in-house automated test systems for battery backup production—driving uptime, cycle time, and first-pass yield. Key tech: test/automation hardware, PLCs, grid simulators, CAN bus, and code like TestStand, LabVIEW, Python, and C/C++.
Software Developer (Platform & IT)
First in-house tech hire at an early-stage influencer marketing company in South Yarra, Melbourne. The role is mostly building and maintaining the RISER influencer campaign platform (Python/Django, React, TypeScript, AI coding tools), plus handling group-wide IT, supplier oversight and automation.
Software Engineer Expert (Remote) | Master's degree or PhD is REQUIRED | U.S. Based | Part-time | AI-train
Part-time, remote AI-training role at a YC-backed startup for engineers with 1-3 years' experience: reviewing and verifying code (including AI-generated code), writing tests, and doing code/architecture reviews using Python, TypeScript, Docker, and agent tools like Claude Code or Cursor.
Founding Engineer
Founding engineer at a London stealth startup building Olympia, a proactive voice AI assistant that helps older adults age safely at home. You'd shape the stack and engineering culture while owning surfaces across real-time speech, LLM agents, long-term memory, and health biomarkers.
Founding Engineer
Founding engineer at a stealth, pre-launch Paris startup: work directly with founders to own systems end to end, set engineering standards, and ship the MVP — spanning customer-facing product, correctness-critical and high-volume data systems, and platform/CI work. Stack: Next.js, React, Node, TypeScript, PostgreSQL. Equity-heavy package.
Principal Software Engineer — Platform, Pipelines & Security
Principal engineer at Diopter, a startup building real-time defense against deepfake voice/face and social-engineering attacks in live calls and meetings. You'll own platform architecture end to end: Go/Python backend services, high-throughput audio/video streaming pipelines, a TypeScript/React dashboard, and secure AWS/on-prem Kubernetes deployments.
Engineering Manager, AI Platform
Engineering Manager leading a team building Harvey's core AI platform — model gateways/routing, agent orchestration, evaluation, and observability for its LLM-powered legal products. A hands-on manager role blending backend technical depth (Python, Go, Node) with team hiring and growth, based in San Francisco.
Engineering Manager
Player-coach engineering manager leading a small, senior team at Nametag, a digital identity-verification and fraud-prevention security startup. Owns delivery, reliability/on-call, hiring, and engineering standards across a Go/AWS backend, React/TypeScript frontend, native mobile clients, and ML fraud-detection systems. Remote within the US.
Chief Technology Officer (m/w/d)
CTO at CUREosity, a Düsseldorf MedTech startup using VR/AR for rehabilitation therapy. You set the long-term technology strategy across VR therapy products, platforms, data/BI and corporate IT, build and lead the engineering organization, and ensure compliance with MedTech regulations (ISO 13485, MDR, privacy, cybersecurity) while evaluating AI and XR technologies.
Senior Software Engineer
Senior Software Engineer at RhythmScience, a remote-first healthcare company. A high-autonomy generalist role: building core product features (Python/Django, PostgreSQL, Vue.js), scaling Kubernetes/AWS infrastructure, and developing Selenium-based test and workflow automation supporting clinical operations. Requires 5+ years of software engineering experience.
IT Engineer
IT Engineer maintains internal systems, SaaS tools, and endpoints while automating workflows to improve employee tech experience in HP’s AI innovation lab.
Tactical Communications and Field Systems Engineer
Field engineer who plans, deploys, and maintains tactical communications — radios, SATCOM, mesh networks, and IP backhaul — linking unmanned air, ground, sea, and underwater platforms to ground control stations. Supports field tests, demos, and combat-zone deployments; requires a DoD Secret clearance and up to 50% travel.
Member of Technical Staff, Engineering Manager
Engineering manager in Profound's NYC office leading a team of 8–12 engineers building agent triggers, automation/workflow execution, and collaborative tools for its AI marketing platform. People-management focused (hiring, coaching, delivery), requiring strong production Rust to partner effectively with the technical lead.
Software Engineer
AI-driven full-stack engineer at PolicyMe, a remote-first Toronto insurtech startup modernizing insurance. Day to day you build full-stack features and AI-powered web applications across Python, React, Redux, PostgreSQL, and AWS, integrating AI models, building data pipelines, and shaping cloud architecture.
Software Engineer, APIs & Context Platform
Senior backend engineer on Glean's Context Platform, owning the developer-facing layer of its Work AI product: REST API standards and endpoints, the API gateway (auth, rate limits, metering), SDKs/client libraries, MCP servers, and docs. Backend work primarily in Golang with TypeScript/Python/Java plus OpenAPI tooling; hybrid, 4 days/week in Mountain View.
Software Engineer, General - London
Junior software engineer (0–2 years) at InstaLILY AI in London, helping build the core AI platform (Lily™) alongside product and design teams. Day to day: shipping new features in Python and JavaScript, with testing, CI/CD, and cloud work (AWS/Azure/GCP). Salary £48,000–£54,000 plus equity.
Chief Technology Officer (m/w/d)
CTO at CUREosity, a Düsseldorf-based MedTech startup building VR/AR-based rehabilitation therapies. The role sets long-term technology strategy, leads the engineering organization, and oversees VR therapy products, digital platforms, data/BI and corporate IT, with emphasis on scalability, security and regulatory compliance (ISO 13485, MDR).