2,916 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Senior Software Engineer (FE/BE)
Build and maintain full-stack features for an email marketing platform, using TypeScript/React on the frontend and Go/Node.js with AWS on the backend, while integrating AI tools into the development workflow.
Senior/Staff Software Engineer, Ecosystem & Connectors
Senior/Staff engineer on Supio's Ecosystem & Connectors team, owning end-to-end API integrations and partnerships with legal case/practice management platforms (e.g., Clio, MyCase). Day to day: build and maintain connectors in TypeScript/Python, use AI coding agents, and work directly with customers and partners.
Staff Software Engineer
Founding-level Staff Software Engineer at a ~15-person Canadian healthcare SaaS startup (remote anywhere in Canada, Toronto-based team). You'll own complex problems end to end, lead EMR/pharmacy/retail integrations, and shape architecture using Java/Spring Boot, React/TypeScript, MySQL and AWS, with AI-augmented workflows and quality ownership (PHI, SOC 2).
Staff Software Engineer (YouBiz)
Staff Software Engineer at YouTrip builds and maintains scalable backend systems for a leading multi-currency payment platform in Asia Pacific, primarily using Go.
Software Engineer Intern (Winter 2027)
Software Engineer Intern (Winter 2027) at HeyGen, an AI video-generation company. Interns build key product features full-stack — from frontend to backend APIs to ML models — using TypeScript, React, Python, and Go, with openings across AI Research, Infrastructure, and Product teams in California, Toronto, and Singapore.
Founding Software Engineer (Python) – Equity & Impact
Founding engineer at an early-stage AI start-up, owning the design and build of scalable, cloud-native apps end-to-end (backend and frontend) in Python and TypeScript, with CI/CD and Azure deployments. Works alongside the founding team to set engineering direction, splitting time between London and Cambridge.
Software Developer Engineer
Backend engineer on a 3-person early-stage team building AI-powered CAD software and a foundation model for mechanical engineering. You'll own Python backend systems, data pipelines, and desktop (macOS/Windows) integrations end-to-end using Django, Flask, SQL, AWS/GCP, and Docker.
Mid-Level Software Engineer
Mid-level backend engineer (2-5 yrs) building and maintaining production-grade API integrations and orchestrated data pipelines at Gryps, an AI platform for construction capital program owners. Day-to-day is Python services and workflow orchestration (Prefect/Dagster/Airflow/Step Functions) on AWS, working hybrid from Midtown NYC.
Field Software Engineer
Field software engineer who takes working robotic use cases from bench pilots to live customer plants: inheriting and owning an existing Python/ROS2 system, fixing bugs, shipping features, running on-site validation, and scaling to more robots and sites as the customer's technical counterpart. 100% on-site in Barcelona with frequent travel to customer plants.
Robotics Software Engineer
Perciv AI is hiring a medior/senior robotics software engineer in Delft (mostly on-site, 1 WFH day/week) to build radar-based perception software for autonomous mobile robots and vehicles. The work is production C++/Python connecting ML models with real-time embedded deployment using ROS2, PyTorch, Docker, and Linux.
Software Engineer, Robot Autonomy (Multi Agent Orchestration), Intern
Laelaps AI, a Zurich robotics startup building autonomous physical security, is hiring an engineering intern to develop multi-agent orchestration — mainly multi-agent reinforcement learning so robots can coordinate surveillance and patrolling. Work spans simulation (Isaac Sim, MuJoCo, Gazebo) with Python/PyTorch or JAX and deployment on real quadruped robots.
Associate Software Engineer
Associate Software Engineer at pQCee builds B2B and B2C applications for post-quantum cybersecurity products alongside engineering, product, and R&D teams. The core stack is front-end (JavaScript, React, TypeScript, CSS), with optional mobile work (Swift, Kotlin) and Web3-related projects.
Systems Software Engineer
Majestic Labs is hiring a systems software engineer in Los Altos, CA to build the lowest layers of its custom AI accelerator stack: firmware, device runtime, and OS interfaces for device bring-up, kernel dispatch, queues, memory mapping, and debug/observability infrastructure. The role centers on C, assembly, computer architecture, and Linux kernel/driver-level work.
Founding Software Engineer Python - Start-up
Founding full-stack engineer at a fast-growing AI start-up building compliance and operational-efficiency products for the NHS and other regulated industries. You own design through deployment — Python, TypeScript/React, FastAPI, LLMs/agentic AI, CI/CD on Azure — working hybrid from London and Cambridge.
Founding Software Engineer Python - Start-up
Founding engineer at a London/Cambridge startup who owns design and delivery of scalable cloud-native apps in Python and TypeScript, deployed on Azure, leveraging LLMs and agentic AI. Sets engineering practices, builds backend services, frontend components and CI/CD, and shapes product decisions alongside the founders.
Battery Management System (BMS) software Engineer
Develops battery management system (BMS) software for Lyten's lithium-sulfur batteries: state-of-charge/health/power estimation algorithms, embedded software for BMS controllers, and integration/testing of BMS hardware and software with battery packs. Key tools include Simulink and strong general programming skills.
Systems Engineer - Software Integration
Systems Engineer - Software Integration at Type One Energy, a fusion energy startup in Knoxville, TN. The role supports the software engineering team by integrating software with physics, design engineering, manufacturing, and project management, using Cameo Systems Modeler and SysML for requirements, architecture, integration, and verification work.
Robotics Software Engineer - Motion Planning
Develops real-time motion control software for TELEXISTENCE's self-developed robot (TX GHOST), covering inverse kinematics, collision avoidance and compliance control, plus actuator driver and ROS framework integration toward enterprise-grade production. Core stack: C++ on Linux, ROS2, MoveIt, Gazebo.