2,917 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Ground Software Engineering Intern
Internship at Reflect Orbital's Hawthorne, CA office where the intern builds ground-segment software and tooling for a satellite constellation — designing, prototyping, and shipping complete tools and test setups with full-time ownership. Preferred stack spans Python/C++, services/APIs and databases, Linux, AWS/Kubernetes, networking, and RF/satellite communications.
Staff Software Engineer, Product
Staff software engineer driving an agentic carbon accounting platform end-to-end at a small Stockholm startup: backend-heavy work in Go, Python, PostgreSQL and GraphQL (API design, domain modeling, calculation logic), plus reviewing and hardening AI-generated TypeScript/React frontend. Works agent-first with tools like Claude Code, Codex and Lovable.
Senior Software Engineer, Edge Platform
Senior engineer owning parts of Laminar's Linux-based edge computing platform for its self-driving factories: building the sensor signal chain, board bring-up and drivers, Zephyr firmware, calibration and OTA/health monitoring, and running ML/LLM workloads on edge hardware. Hands-on role from architecture through production using Rust/Python/C++/Go.
Software Engineer Intern - 2027
Software engineering intern (2027) at Genesis Molecular AI building tools for molecule/protein visualization, ML model analysis, and chemical workflows, plus scaling infrastructure for large-scale deep learning and molecular dynamics jobs. Work spans software engineering, machine learning, computational chemistry, and drug discovery.
Systems Engineer II
Leads systems engineering for CesiumAstro's Skylark active phased array antenna programs — defining requirements, verification/validation strategies, and supporting integration and test of complex aerospace systems. Core work centers on the systems engineering lifecycle, requirements traceability, VCRM documentation, and cross-disciplinary collaboration.
Senior Software Engineer - Instawork Robotics
Instawork is on a mission to create meaningful economic opportunities for skilled hourly professionals in communities around the globe. Our AI-powered labor marketplace helps local businesses scale, and enables global…
Web Engineer
Rare Candy, a fast-moving startup building a trading-card collecting and shopping platform, is hiring a mid-level Web Engineer to build responsive, collector-facing web experiences — browsing products, managing collections, and opening Instapacks — using React, TypeScript, and GraphQL on a small remote product team.
Sr. IT Engineer
Sr. IT Engineer managing IT infrastructure, security, and automation for a pet-tech company. The role involves managing Google Workspace, Azure, and networking hardware, while implementing AI-driven workflows and agents using tools like n8n and Claude to optimize internal operations.
Software Engineer - Platform
Builds core infrastructure for AI model evaluation, including AI gateways, automated runtimes, and serving layers. Focuses on low-latency APIs, streaming problems, and observability using Go and LLM provider APIs.
Software Engineer, Localization
Builds GPS-denied navigation and targeting software for autonomous defense platforms: designing vision navigation and sensor-fusion/state-estimation algorithms (IMU, cameras, LiDAR, radar, GNSS) in modern C++ on Linux, with optional PyTorch/CUDA deployment on embedded Jetson hardware, from simulation through flight testing.
Software Engineer, AI Automation
Software Engineer on Fluidstack's Decision Team building internal AI-automation systems for the company's AI data-center operations: automating hiring, cash/capital forecasting, and contract parsing into structured data. Work is Go/Python/TypeScript with LLM APIs, MCP servers, and agentic coding tools, forward-deployed with finance, legal, and people teams in San Francisco.
Staff Systems Integration Engineer
Transfers and troubleshoots molecular/cell biology protocols onto Cellanome's in-house prototype instrument, debugging hardware, software, consumables, and workflow issues while building AI-assisted automation, instrument-control, and data-analysis tooling. Core stack: Python, instrumentation, wet-lab protocols, and LLM/agent workflows.
IT Engineer
HappyRobot is hiring an IT Engineer in Mexico to be the first point of contact for internal tech operations: Tier-1 support on macOS/Windows, onboarding/offboarding, identity and access management, MDM device compliance, and office infrastructure. The toolkit spans Google Workspace, Slack, Okta, Kandji/Jamf, and Zoom/Google Meet at a high-growth AI startup.
Principal Systems Engineer
Principal Systems Engineer at Red 6, an AR air-combat training startup, leading requirements, architecture, interface management, integration, and verification for the ATARS product across its full lifecycle. Works cross-functionally with hardware, software, optics, test, and airworthiness teams using MBSE/SysML, requirements management tools, and formal design reviews.
Senior Software Engineer, Fleet Connectivity
Owns network performance and connectivity for Dyna Robotics' robot fleet: building monitoring, automated failover, and self-healing diagnostics, tuning low-latency teleoperation links, and handling customer site bring-up. Core tech: Linux networking, TCP/UDP, Wireshark/tcpdump, WireGuard VPNs, and production code in C++, Rust, or Python.
Staff Systems Engineer
On-site Staff Systems Engineer (senior IC) in New York City for a rapidly scaling infrastructure startup that orchestrates tens of millions of Firecracker VMs monthly across a global bare-metal fleet. Day-to-day: own architecture, reliability, and scale-out of distributed compute/storage with kernel-level work (eBPF, cgroups, namespaces) using Go, Rust, and C. $280K–$380K base plus equity.
Software Engineer
Rilla, a New York startup whose AI turns in-person field sales conversations into coaching data, is hiring a software engineer with 1-3 years of experience to build end-to-end features across React, React Native, TypeScript, and Python, shipping fast and working in the office 5 days a week. Pays $193k-$258k plus equity.