2,916 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Member of Technical Staff – Platform (AI Data)
One of two platform engineers at a seed-stage SF startup that sells AI training data and RL environments to frontier labs: own the infrastructure for multi-hour agent runs across model APIs, sandboxes and workers, plus task/eval pipelines and dataset delivery, with a focus on reliability and observability. On-site San Francisco, 9-9-6.
C++ Software Engineer Intern
Venti Technologies is hiring a C++ Software Engineer Intern in Singapore to build software for its safe-speed autonomous logistics vehicles — implementing advanced AV features, upholding code quality through CI and testing, and writing technical design docs. Core stack: modern C++, Linux, GTest, and ROS.
Software Engineer, Frameworks
Mid-to-senior software engineer in Pune, India focused on testing and validating Ethernovia's automotive Ethernet networking software — designing, automating, and running test cases and test infrastructure with Python and CI/CD tools like Jenkins for safety-critical vehicle systems (MISRA, AUTOSAR, ASPICE).
Software Engineer-Device Drivers
Builds kernel and user-mode device drivers, stack extensions, and debug/test utilities for Ethernovia's Ethernet networking silicon used in software-defined and autonomous vehicles, integrating with Linux and AUTOSAR communication stacks. Core tech: C/C++, Linux/QNX/RTOS, Ethernet.
Senior Software Engineer, AI
Builds and owns AI agents that run Tono's specialty-care clinic end to end — drafting clinical notes, triaging intake, and coordinating care — plus shared agent infrastructure and evaluation harnesses. Works in a TypeScript monorepo (Next.js, tRPC, Prisma, Postgres, Inngest) with LLMs from OpenAI, Anthropic, and Vertex.
Senior Software Engineer, Dermatology Inference
Senior engineer owning the ML path at Tono Health: training, evaluating, and deploying dermatology vision and multimodal models (PyTorch, LoRA) plus inference services, with results integrated into a TypeScript/Postgres product. Hybrid from the DUMBO, Brooklyn office; fully remote considered for the right candidate.
Staff Mechanical Systems Engineer (Spacecraft)
Staff Mechanical Systems Engineer who owns the mechanical design, analysis, build, test, and integration of multiple Mira spacecraft missions from proposal to flight, defining mission configurations and leading design reviews with cross-functional teams. Requires 6+ years of spacecraft mechanical systems experience plus CAD, GD&T, and structural analysis skills.
Member of Technical Staff
Full-stack engineer at Finch, a Sequoia-backed Series A legal-AI startup automating personal-injury case admin. You'll own features end-to-end — architecture through production — building AI-powered attorney-facing software with Python/Django, React, and AWS, onsite in NYC four days a week.
Lead Software Engineer
Hands-on Lead Software Engineer at Zurich Soft Robotics (ZSR), a Zurich startup building Solskin, a climate-adaptive solar facade. You own the full stack daily — Python/FastAPI backend, PyTorch AI controllers, React frontend, and C/C++ embedded firmware on STM32/Beckhoff — and architect the future sensor-to-data platform.
Software Engineer
Early-career software engineer at RipeGlobal building its AI-enabled Clinical Performance Platform for healthcare. Day to day: designing and shipping features across AI-driven clinical training experiences and the software behind dental simulation hardware, working with clinical educators and a globally distributed team.
Software Developer
Full-stack developer at Docxedo, a startup whose Word add-in auto-formats law-firm documents in one click: you'll own DevOps, scaling and reliability on Azure, build systems that manipulate document OOXML, and ship features across a Python/FastAPI backend and React frontend, with AI/ML integration.
Senior Ground Software Engineer
Astro Mechanica, an aerospace startup, seeks a Senior Ground Software Engineer (Telemetry & Control) to architect and build the end-to-end ground data pipeline for its aircraft: ingesting flight telemetry from the radio link, processing and storing it, and visualizing it in Mission Control with ~1-second latency. Work spans cloud backend, time series databases, and web front ends.
Software Engineer - Kernels
Designs and optimizes compute kernels that interface directly with MatX's custom hardware for training and running the largest ML/AGI workloads, working alongside ML research and hardware teams. Stack centers on Rust plus low-level optimization (C/C++, assembly, SIMD, GPU/CUDA); hybrid role, 3 days/week in Mountain View.
Software Engineer, Data Foundations
Builds and scales enterprise data connectors and pipelines that feed Glean’s AI-powered search, assistant, and agent products, ensuring fresh, permission-aware knowledge for thousands of SaaS apps.
Senior Software Engineer
Build and lead scalable software systems for a SaaS platform that helps home service professionals manage operations, using Ruby and modern engineering practices.
Senior Software Engineer
Senior full-stack engineer at a Sydney-based online healthcare startup, owning features end-to-end across the patient app, clinician portal, internal tooling and APIs. Stack is React + TypeScript, Node.js + Express + PostgreSQL on AWS, plus a Swift iOS app; AI tools like Claude Code write most of the code, so judgment and review are key.
Senior Software Engineer
Day-to-day involves building an AI-native customer support platform using TypeScript, React, and NestJS, owning features end-to-end while integrating coding agents into the development workflow.
Software Engineer, Products
Build mobile and backend features for a climate-tech startup that controls thermostats, heat pumps, and EV chargers to electrify homes and cut carbon emissions.