2,916 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Software Engineer - Core Platform
Software engineer building and scaling the core distributed backend systems, APIs, and data execution pipelines that serve Elorian AI's frontier visual reasoning (multimodal) models. Day-to-day focuses on high-throughput, low-latency distributed systems — streaming frameworks, task scheduling, and fault-tolerant, auto-scaling backend infrastructure.
Engineering Manager, Arc Vehicle Mechanical
Leads the Arc Vehicle Mechanical team at Inversion, an aerospace and defense startup, owning the design, analysis, build, integration, and qualification of the Arc reentry spacecraft's structures, mechanisms, and thermal protection systems. Day-to-day is people management plus structural/FEA oversight, CAD configuration control, and manufacturing integration.
Programmeur moteur senior / Senior Engine Programmer
Senior engine programmer at a new Montreal game studio (with NetEase ties and partners in Hangzhou) who owns and maintains the core engine, integrates Epic Games/vendor tech, and builds low-level systems like streaming and serialization. Core stack: expert C++, Unreal Engine, multithreading, and CPU/GPU/memory profiling.
Web Developer
Front-end web developer building production React applications for Presto's Voice AI restaurant drive-thru platform, including internal operator dashboards and customer-facing configuration tools. Core stack is JavaScript, HTML5, CSS3, and React, with Node.js tooling and REST/GraphQL API integration.
Vehicle Software Engineer – Rust Controls
Builds the Rust/Python automation framework that lets end users compose control behavior for Stoke's reusable Nova launch vehicle, used daily for benchtop checkouts, engine hotfires, and flight objectives. Day to day: designing hardware-control abstractions in a distributed system, guardrails for an autonomy ecosystem, ground/vehicle automation, and software tests.
Senior Robotics Software Engineer, Perception
Develops perception and sensor-fusion software for Parallel Systems' autonomous battery-electric rail freight vehicles — building real-time computer vision, calibration, and state estimation in Rust/C++ that fuse lidar, camera, IMU, and GPS data from first principles through 24/7 field deployment.
Software Engineer, Robot Autonomy (Multi Robot Orchestration), Intern
An internship at Laelaps AI (Zurich) building the multi-agent orchestration layer for autonomous security robots: designing and training Multi-Agent Reinforcement Learning algorithms for surveillance/patrolling, plus task allocation and simulation-to-real deployment on quadruped robots. Core stack: Python, PyTorch/JAX, and simulators like Isaac Sim, MuJoCo, and Gazebo.
Senior Software Engineer - Go
Senior Go engineer on QuickNode's RPC Platform team, designing, building, and scaling high-throughput, low-latency distributed backend services that power the company's blockchain RPC infrastructure. Core focus: Go, distributed systems, databases, streaming architectures, and Web3/node infrastructure, with global remote work.
Software Engineer
Full-stack software engineer at Variance, a small San Francisco startup building AI agents for fraud, risk, and identity investigations. You'd own features end-to-end using React/Next.js, TypeScript, MySQL, and ClickHouse, working directly with founders on high-stakes, real-time AI decision systems.
Senior Software Engineer
Senior Software Engineer at Variance, an early-stage team building AI agents for fraud, risk, and identity investigations. You own features end-to-end — backend architecture through polished UI — working directly with founders in-person in San Francisco using React/Next.js, TypeScript, MySQL, and ClickHouse.
Member of Technical Staff
Generalist AI engineer on a small healthcare startup team building the AI and data systems behind an AI-driven primary care app — spanning model fine-tuning, RAG/retrieval, AI agents, real-time voice AI, data pipelines, and observability. Core stack: Python, PostgreSQL, and AWS.
Software Engineer
Backend software engineer at Strala, an early-stage insurtech startup in San Francisco rebuilding insurance infrastructure. You'd own core systems, databases, and architecture, shipping production Python code daily on GCP/AWS with Docker — in-person, with high ownership from day one.
Product Engineer (Member of Technical Staff)
humans&, a human-centric frontier AI lab in San Francisco, is hiring a Product Engineer (Member of Technical Staff) to build its products end to end. Day to day that means full-stack product work across a Convex (TypeScript) backend and a Next.js, React Native (Expo), and Tailwind frontend, with a focus on human-computer interaction.
Staff Software Engineer
Staff Software Engineer on Astera Institute's Neuro-AI program, a private foundation pursuing neuroscience-informed AGI research. Day to day they architect high-performance infrastructure for large-scale model training and simulations, build neuroscience-informed RL environments, and turn research prototypes into scalable production systems, working in-person in Emeryville, CA.
Software Engineer - AI Infrastructure
Infrastructure Product Engineer building the backbone of Andromeda's AI compute marketplace platform: orchestration, provisioning, lifecycle management, APIs and control planes abstracting over VMs, Kubernetes, and bare metal. Day-to-day is systems-heavy platform/backend work with Python or Go, Linux, and infrastructure-as-code tooling.
Software Engineer
Contract-based (with path to full-time) Software Engineer at Polymath, an applied research lab in San Francisco advancing long-horizon AI agent capabilities via reinforcement learning. You'll build simulation environments, challenging tasks, and verifiers used to train and evaluate frontier models, plus the infrastructure and tooling around them.
Member of Technical Staff - Engineering
Polymath, an applied AI research lab building reinforcement-learning simulation environments for autonomous agents, is hiring a founding Member of Technical Staff - Engineering in San Francisco. You'd build the simulation engine, scalable parallel infrastructure, and performance/tooling systems that train and evaluate AI agents, working at the intersection of engineering and research.