2,916 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Member of Technical Staff - Engineering Lead, Data Acquisition
Lead a team building and scaling the data ingestion layer that feeds AI training corpora, including web crawling, extraction pipelines, and data lakes, while staying hands-on with distributed systems and collaborating closely with research teams.
Infrastructure Software Engineering – Platform & Build
Infrastructure Platform Engineer at Fractile (an AI inference chip startup) in London: owns CI infrastructure end-to-end, scales a multi-language Bazel monorepo, builds observability/incident response, and manages infrastructure-as-code for hybrid cloud and on-prem. Core stack: Bazel, CI/CD, Terraform/OpenTofu/Pulumi, Prometheus/Grafana, Python/Go/Rust.
Senior Systems Software Engineer
Builds the production-critical control chain for Fractile's AI chip racks: firmware and services for rack management, BMC and board/device controllers across bare metal, RTOS and embedded Linux, using C and/or Rust. Covers bring-up, provisioning, telemetry, updates, recovery and security.
Computer Radar Software Engineer for Drone Systems (m/w/d)
Develops, optimizes, and benchmarks radar signal processing and real-time object-tracking algorithms for Alpine Eagle's counter-drone defence systems, implementing them on embedded target platforms and integrating with drone hardware. Core stack: C++, Python, ROS2, and embedded targets (ARM/NEON, CUDA).
Sr. Software Engineer
Senior Software Engineer at a DC spaceflight startup building next-generation spacecraft hardware. Day to day: embedded C on Xilinx Zynq SoCs (bare-metal/FreeRTOS/embedded Linux), Python test tooling, ground-support software, and CI/build infrastructure, with hands-on hardware debugging at the bench alongside NASA and Space Force programs.
Senior Software Engineer
Senior Software Engineer at Cephable, a seed-stage on-device productivity assistant, owning its React/Electron desktop app end to end — UI, architecture, and performance — with growing involvement in C++/Swift/Kotlin native modules that bridge to on-device AI inference (llama.cpp).
Founding Engineer
Founding engineer (contract-to-hire) at Buckstop building a platform that appraises the residual value of electronic assets at scale for the circular economy. Early hires report to the CTO and own work end-to-end across software, data, and ML tracks; core expectations are Python, SQL, and cloud experience. Hybrid in DC/DMV or Seattle, remote possible.
Member of the Technical Staff
Backend engineer at an early-stage startup building an AI voice agent for restaurants. Day to day you design and run backend services and RESTful APIs, build integrations with POS, reservation, payments, and voice transcription providers, work with LLM workflows, and keep production reliable as volume scales.
Senior Robotics Security Software Engineer
Designs and hardens security controls across Saronic's autonomous surface vessel fleet — spanning on-vessel edge compute, vessel-to-vessel/cloud mesh networking, and cloud orchestration — in a Rust-first, NixOS-based embedded Linux stack, covering secure boot, trusted execution, mutual TLS, key management, and secure CI/CD.
Software Engineer (Sr.)
Senior software engineer at Tekst (Belgium), a Series A startup building the context layer that lets AI agents automate enterprise back-office processes. Day to day you mentor engineers, design and optimize scalable systems, and champion engineering standards using Node.js/TypeScript, Python, SQL, and AWS.
Lead Autonomy & Robotics Software Engineer
Lead the design, integration, and field deployment of the autonomy software stack for Marcurius' unmanned surface vessels (USVs) — building navigation, localization, perception, and multi-sensor fusion systems using ROS 2, C++/Python, and embedded real-time hardware, working onsite in Clearwater, FL.
Software Engineer, Enterprise Agent Evals & Efficiency
Software engineer on Perplexity's Enterprise Agent Evals & Efficiency team, building evaluation environments, automated graders, and improvements to the agent harness, tools, and model routing so LLM agents reliably complete enterprise workflows with lower latency and cost. Backend-heavy work in Python, Go, or Rust.
Software Engineer
Backend software engineer at Foundation Health, an AI operating system for specialty pharmacy, building the distributed back-end systems that connect pharmacies, health systems and insurers. Modern Node.js/TypeScript stack on GCP; hybrid role based in Manchester (1–2 office days/week) with equity.
Software Engineer
Full-stack engineer at Stridee, a fitness/wellness community platform with a wearable-data API. You'd ship features end to end — Postgres migrations, Rust API endpoints, Next.js/TypeScript web apps, occasionally iOS/Android — and build the wearable-integration platform (Garmin, COROS, Polar). Remote-first small team, equity, start January 2027.
Principal Infrastructure Software Engineer, Fleet & Automation
Build and maintain the control plane and automation for AI/HPC infrastructure, including GPU fleet provisioning, network operations, and observability to improve system availability and reduce costs.
Principal Software Engineer - Fleet Management
Technical lead for Nscale's Fleet Manager platform, building Python-based workflow automation that provisions, tests, monitors, and self-heals GPU nodes and network switches across its GenAI cloud. Owns architecture and delivery, mentors senior engineers, and integrates tooling like NetBox, OpenStack, MAAS, and Ironic.
Software Engineer Team Leader
Leads Terra Security's Internal Network engineering team, setting technical direction, mentoring engineers, and shipping network/endpoint security capabilities end to end for an AI-powered continuous penetration testing product. Core stack: TypeScript, Node.js, and React.