2,916 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Staff / Founding Engineer — Identity & Access Infrastructure (Part-time)
Part-time senior engineer at Nicklpass (Philadelphia, remote-friendly) to build the company's enterprise SSO/identity layer and a vendor access protocol for fractional, metered software access. Day to day: design authorization, provisioning, metering, and billing systems with TypeScript, Next.js, PostgreSQL, and Drizzle.
Software Engineer
Full-stack engineer at an early-stage Singapore startup building an AI-powered sales intelligence platform: you ship features end to end (C#/.NET, PostgreSQL, Next.js/TypeScript on Azure), work on AI extraction pipelines, and direct and review AI coding agents. Hybrid role, 4 days in the Singapore office.
Founding Engineer
Founding engineer at Nixora, an early-stage startup building an autonomous control plane to deploy, scale, monitor, and manage AI-generated software and AI agents. You'd build the core platform across cloud infra, containers, APIs, and Python/TypeScript, with equity compensation until a salary follows funding.
Software Engineer – AI Product & Platform
Early engineer owning the AI product layer at Axolotis: hardening agentic LLM workflows (Anthropic/OpenAI) that parse operational data and drive production-optimization schedules, plus the customer-facing web app engineers use to review and approve them. Stack: Python/FastAPI, React/TypeScript, PostgreSQL.
Software Engineer (Python, AI)
Customer-facing backend engineer taking a wellness/fitness startup's LLM product from prototype to production, deploying it into enterprise customer environments and integrating their messy data. Core stack: Python, Docker, APIs; £65k–£75k, remote or hybrid in London.
Founding Engineer
Founding engineer at an early-stage, venture-backed startup building an AI-native platform for VIP loyalty and curated experiences in travel and hospitality. You'll design the core platform, make early architecture decisions, and ship quickly alongside the founding team, leveraging strong full-stack and LLM experience.
Senior Software Engineer
Senior Software Engineer at Historiq, whose platform (Historiq Una) and services help archives, libraries, and museums manage and digitize collections. Full-stack work building features, APIs, data models, real-time collaboration, and media/background-processing systems using Python, TypeScript, React, PostgreSQL, and cloud infrastructure.
Software Engineer
Front-end-leaning software engineer at Medley Learning, a Workshop Ventures-backed edtech startup building AI-powered reading and writing scaffolds for multilingual learners via a React/TypeScript Chrome extension. You'll also work on the Node.js/MongoDB data layer on a small senior team; $140k–$170k, Boston-based with remote flexibility.
Senior Software Engineer - Application
Fully remote senior full stack engineer at a healthcare supply-chain data company, owning features end-to-end: Python/SQL backends, TypeScript/React frontends, and selective Rust for performance-critical parts. Central focus on embedding Agentic AI automations and building auditing, monitoring, and data-integrity capabilities for enterprise healthcare customers.
Founding Engineer
Cefense is an early-stage AI security startup building tools that show what AI agents do, trace their actions, and help teams control risk. As a founding engineer you'd work hands-on across kernel-level visibility, threat hunting, and applying AI models to turn security signals into actionable decisions. Remote (U.S.), part-time, $180-200k cash, no equity.
Software Engineer
Mid-level (Software Engineer II) full-stack/backend engineer at Nyle, a startup building AI teammates for running ecommerce stores for top Amazon and Shopify brands. Hybrid role based in the SF office; you'll own features end to end using languages like Python/Go/Java/TypeScript, cloud platforms, Docker, and CI/CD.
Founding Software Engineer
Fully remote founding engineer at WhipScribe (Neugence Technology), an AI meeting-recording/transcription product. You'd own real product areas end-to-end alongside the founding team, using AI tools like Claude, ChatGPT, and Cursor, and qualify via a buildathon challenge (desktop app, APIs, MCP integrations, UI/UX).
Founding Engineer – Supply Chain Intelligence & Carbon Infrastructure
Founding engineer at Drinova, a supply-chain provenance and carbon intelligence startup. Day to day: architecting backend Python services — graph-based digital twins, carbon calculation and provenance engines, verification workflows, and AI decision-support — plus data pipelines and APIs integrating ERP, MES, supplier, and logistics data on cloud infrastructure.
Chief Technology Officer (CTO) & Co-Founder for Quantum computing company
Co-founder CTO at QuLattice, an early-stage quantum computing software startup: owns technical vision and architecture for quantum error correction tooling — fault-tolerant compilers, syndrome decoders, lattice-surgery simulators — while hiring the engineering team and co-leading fundraising, using C++, Rust, and Python.
Founding Engineer / Technical Lead, AI Platform
Founding engineer and technical lead for Trade Titus, an AI-driven platform for the contractor and home services industry. You'll own the architecture and tech stack, build full-stack services and production AI agents (MCP/A2A) with the founder, then recruit and lead the engineering team.
Technical Co-Founder / Lead Software Engineer — DinnerMapper
Lead all engineering for DinnerMapper, an early-stage recipe-generation web venture — architecture, hands-on full-stack build (Python, Next.js/React/TypeScript, PostgreSQL), APIs, and security — either as a technical co-founder with LLC ownership or as a contract lead with profit sharing/phantom units. No salary initially.
Senior Software Engineer - Data
Senior data engineer designing, building, and optimizing the ETL/ELT pipelines and data platform behind Symmetric's healthcare supply chain product — combining AWS-based data engineering (Python, SQL) with LLM-powered enrichment and ML-driven data quality. Fully remote US-based IC role reporting to the Lead Data Engineer.