2,916 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Enterprise IT Engineer
Owns enterprise IT at PhysicsX: designing and running Microsoft Entra ID identity (conditional access, PIM, SSO/SCIM), replacing legacy VPN with zero-trust SASE, and managing MDM across a mixed macOS/Windows/Linux fleet. Work is automated with Terraform, PowerShell, and Python to support security and compliance like SOC 2 and ISO 27001.
Manufacturing Test Software Engineer
Senior Manufacturing Test Engineer at Red 6, an AR air-combat-training startup in Denver, leading development, validation, and deployment of production test systems (PCBA, subassembly, and system-level) for aerospace electronics, working closely with contract manufacturers. Key tools include Python/C/C++ test platforms and automated test fixtures; US citizenship required.
Senior Software Engineer, Infrastructure
Own the reliability, scale, performance, and developer experience of HUD's core platform, building AWS infrastructure (Kubernetes/EKS, Terraform, Docker) and improving backend systems, CI/CD, and observability so the AI agent training/eval platform is faster, more reliable, and cheaper to run.
Software Engineer Intern
Haize Labs gets LLM apps out of POCs and into production. We eliminate the risk and improve the reliability of LLM apps by haizing them -- i.e. rigorously, proactively, and continuously fuzz-testing them. We are…
Senior Software Engineer
Senior Software Engineer at Fin (Intercom) in Dublin builds and scales AI-powered customer support systems using Ruby, AWS, and distributed systems, collaborating with cross-functional teams.
Senior Software Engineer
Leads design and development of C12's core quantum measurement software framework — instrument control, high-throughput data storage, and experiment orchestration for building a quantum computer — primarily in Python with PostgreSQL, message brokers, and orchestration tools, while mentoring junior engineers and owning the full software lifecycle.
Software Engineer
Backend/full-stack engineer at a Series A startup building a financial operations platform for the construction industry: build and own core systems that sync financial data across fragmented legacy construction software in real time. Stack: Redis, Postgres, AWS (CDK, EC2); on-site in San Francisco, $140K–$285K plus equity.
Member of Technical Staff, Compiler
Research-heavy role at a physician-founded clinical AI company: build a compiler that turns clinical standards into executable, verifiable decision modules using LLMs (PyTorch, Transformers), benchmarking, and formal methods like static analysis and SMT/SAT solving, shipping the winning approach into a live point-of-care pipeline. Fully remote in US/Canada with periodic in-person offsites.
Chief Technology Officer (CTO)
Build and scale an AI-powered platform that connects homebuilders with institutional capital, handling underwriting, workflows, and data infrastructure for a new asset class in real estate finance.
Grid Systems Engineer
Designs and develops the medium-voltage (13.8kV–35kV) grid interconnection for the company's AC/DC power conversion systems that power AI data centers, taking grid-interface hardware from prototype build and testing through grid-code compliance (IEEE 519, IEEE 1547, IEC 61850, UL 1741) and certification to volume production. Based at the Egg b. Zürich HQ, working with power electronics, firmware,
08_101 Field Integration Engineer（インターン・実車運用アシスタント / 大阪） ／ 自動運転開発室｜大阪
Internship at newmo's autonomous driving development office in Osaka: assists with fleet management, vehicle checks, and data-collection operations for self-driving test vehicles, while learning basic Linux-based in-vehicle equipment tasks. Fully onsite at the JOTO Base, working under Senior/Junior mentorship.
01_302 Field Integration Engineer（実車運用 / 大阪） ／ 自動運転開発室｜大阪
Field Integration Engineer at newmo's JOTO Base in Osaka runs the fleet of autonomous-driving development vehicles: preparing cars for data-collection drives, operating pre/post-drive checklists with safety drivers, triaging logs and data-flow issues, and maintaining onboard hardware (Linux PCs, cameras, LiDAR, GNSS, comms) while reporting findings to the Tokyo dev team via Slack/Notion.
01_301 Field Integration Engineer（拠点運営リード / 大阪） ／ 自動運転開発室｜大阪
Leads on-site operations for newmo's autonomous-driving data-collection fleet at its JOTO Base in Osaka: designs first-line ops procedures with the fleet-management team, handles second-line troubleshooting of in-vehicle sensors/PCs/networks, and packages the playbook for future bases while coordinating remotely with the Tokyo dev team. Salary ¥6–8M/yr.
4100_PNT_Time Frequency System Engineer
Engineer at a Tokyo space startup designing high-stability timekeeping and frequency systems for satellite positioning payloads: evaluating atomic clocks, designing PLL circuits and satellite-ground/inter-satellite synchronization architectures (NTP, White Rabbit), and simulating performance (Allan deviation, phase noise) using Python/MATLAB on Linux/Windows.
Founding IT Engineer
Builds and owns the IT function from scratch at an applied-AI cybersecurity startup: securing endpoints (MDM), corporate identity/access (SSO/MFA), SaaS vendor management, office network infrastructure in SF and NYC, and end-user support, with Python and AI-assisted automation (Claude Code, Cursor, n8n/Zapier). In-person in San Francisco 4 days a week.
Senior Motion Planning & Controls Software Engineer
Designs, implements, and tunes motion planning and controls software (primarily C++) for Onward Robotics' autonomous mobile robots and cobots used in warehouse fulfillment, making robots safe and effective around human workers. Day to day involves algorithm development, simulation and real-robot testing, Agile collaboration, and mentoring junior engineers.
Software Engineer, Robotics
Build autonomy software for heavy-duty robots that construct off-grid power plants, including perception, planning, controls, and fleet coordination for outdoor, real-time deployment.
Senior Software Engineer, Code Transpilation
Builds AI-enabled code transpilation tools that translate high-level algorithm code into provably correct embedded systems code, combining generative AI, static analysis, and formal verification. Day to day: designing code translation pipelines and C++ generation with CI/CD and testing. Core stack: C/C++, Python, LLMs.
Software Engineer (Intern)
SpotsBooking, an early-stage startup building a marketplace for last-minute beauty & wellness appointment bookings, is hiring a software development intern. The intern builds frontend UI (React/Next.js/TypeScript), backend APIs and business logic (Node.js), and optionally mobile features (React Native), with a path to long-term or equity-based roles.
Flight Software Engineer
Designs and maintains the flight software stack for a novel satellite bus, focusing on attitude control, reliability, and cross-team interfaces.