2,914 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Software Engineer
Software engineer at a small aerospace team in Glasgow building software for autonomous uncrewed aircraft (UAS): real-time C++ flight-control on the edge, embedded subsystem programs, web services for data distribution, secure data links, and user-facing operator software.
IT Engineer
Runs IT operations end to end at an AI security startup: administering Okta identity, managing a Jamf-driven macOS fleet, owning SaaS business systems (Salesforce, Slack, Google Workspace), automating onboarding/offboarding, and partnering with the security team. Requires 5+ years of IT engineering with deep Okta and Jamf expertise.
Software Engineer
Customer-facing software engineer at RelyComply, an AI-powered KYC/KYB/AML compliance platform company: you deliver, customise, and integrate the low-code platform for global financial clients, troubleshoot live deployments, and turn client feedback into product improvements using Python/TypeScript, APIs, and ML.
Software Engineer – Security & Infrastructure 🇦🇷
Security and infrastructure engineer working alongside the CTO to own the security/compliance roadmap (HIPAA, GDPR, SOC 2), lead pentest scoping and remediation, and harden the AWS/Supabase/Cloudflare backend for the company's AI-powered mobile business phone app, Allo.
Software Engineer
Backend engineer at ShopLevers, an AI-powered bookkeeping and financial analysis platform for auto repair shops. You'll build integrations (QuickBooks, shop systems), data pipelines, and event-driven services on Google Cloud with Node.js/TypeScript or Python, in a three-person early-stage team, remote within Spain.
Software Engineer (Python) – AI Product | TOP AI Startup
Senior backend/full-stack Python engineer at an AI-native startup automating HR management (recruiting, onboarding, employee ops) with autonomous agents and LLMs. You'll design and scale a conversational agentic AI platform using Django/ASGI, Celery, RabbitMQ/Redis, and LLM techniques like RAG and function calling. Hybrid role based in Madrid.
Software Engineer, Early Career
Early-career software engineer at a quantitative investment manager, rotating through 2–3 technology teams to build systems that directly contribute to trading profitability. Day-to-day is hands-on development in Python or C++ with 1-on-1 mentoring from senior engineers, based in the Chicago or New York office.
Member of Technical Staff - GPU Performance
At Gimlet Labs (an AI inference neocloud startup), this San Francisco-based Member of Technical Staff role focuses on characterizing and improving GPU/accelerator performance for production AI inference — profiling kernels, compilers, runtimes, and multi-device execution, building benchmark and regression infrastructure, and turning hardware-level evidence into end-to-end latency, throughput, and
Software Engineer - Product
Product-focused full-stack engineer at a Series A AI-native commercial insurance brokerage in San Francisco (onsite 5 days/week). Owns business KPIs end-to-end, building agentic AI, RAG, and MCP-powered automation using Python, TypeScript, and cloud infrastructure, with on-call and heavy AI-tool usage.
Software Engineer, AI Platform - Intern
An internship developing AI-driven autonomy software for Nuro’s Level 4 self-driving platform, focusing on data platforms, ML infrastructure, simulation, or technical infrastructure to enable scalable autonomous mobility solutions.
Customer-Facing Data Integration Engineer
Forward-deployed engineer at QuadSci, a New York AI startup, working directly with customer teams to design integrations and take data pipelines, APIs, and services to production for churn prediction and revenue operations. Day-to-day is Python-based systems building, end-to-end delivery, and reusable tooling.
Systems Engineer, MBSE
First systems engineering hire at Grid.aero, owning top-level aircraft architecture, requirements, and avionics/electronic hardware selection for autonomous aircraft, while driving system safety and airworthiness certification with regulators. Based onsite in San Leandro, CA; experience with DO-178/DO-254/ARP4754-style standards preferred.
Member of Technical Staff
One of the first engineers at Lightsage, a San Francisco seed-stage startup that makes companies visible and usable to AI coding agents. You'll own systems end to end across frontend, backend, infra and data, building agents, evals and benchmarks using AI coding tools like Claude Code and Codex.
Python Software Engineer - Remote Working - Up to £120,000 Base (+Bonus, equity etc)
Build and scale Python-based backend systems, APIs, and services for an AI-driven fintech platform, including embedding LLM-powered features with monitoring and evaluation. Remote-first role based in London, paying up to £120,000 base plus bonus and equity.
Software Engineer
Joins a brand-new team building the software, data, and AI tooling for Ephos's photonic-chip fabrication fab in Milan: owning internal and client-facing Python libraries, building the orchestrator that runs the fabrication lines (operator GUI plus MES-facing API), and setting standards for testing, code review, and documentation.
Senior/Staff Software Engineer, Agentic Core
About us Founded in 2021, Axion is at the forefront of transforming product quality and customer satisfaction in manufacturing. Our cutting-edge AI-powered platform empowers manufacturers to swiftly identify,…
Senior Software Engineer, Infrastructure
Senior Software Engineer building and scaling the infrastructure behind Learning Commons' education platform and AI-enabled learning tools — backend services, APIs, cloud infrastructure, CI/CD pipelines, and observability. Hybrid role based in Redwood City, CA using tools like Terraform, Kubernetes, and Argo CD.
Software Engineer, Product
Product engineer at Descript owning product surfaces end to end—on the Editor, Growth & Monetization, Media, or AI (Underlord) teams—taking features from idea through launch and measurement. Full-stack work centered on TypeScript, React, Node.js, Temporal, and SQL, with a new Rust-based media engine.
Software Engineer, IR Data Products
Build and operate a production pipeline that turns raw infrared satellite imagery into calibrated, geolocated, and analysis-ready wildfire detection products under strict latency constraints.