2,916 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Member of Technical Staff, Research (Intern)
Research-focused role at an AI startup (Abundant) designing next-gen model reasoning/data strategies; bridges frontier AI research and production systems for AGI/ASI applications.
Senior Flight Software Engineer
Senior Flight Software Engineer at Astro Mechanica (San Francisco, on-site 5 days/week) developing highly reliable autonomous flight-control software and the simulation/infrastructure to validate it for supersonic aircraft. The role owns the full software stack — application, OS, networking, firmware — using systems languages like C++ or Rust with real-time and embedded/Linux experience.
Senior Software Engineer
One of the first engineers at an early-stage, VC-backed AI startup building procurement AI for manufacturing and industrial companies. Day to day: build backend services and ERP/supplier integrations, plus agentic LLM pipelines for spend categorization, sourcing, and automated negotiation, with technical leadership but no direct reports.
Enterprise Software Engineer
Build and maintain enterprise systems that track supplier commitments, manufacturing workflows, and quality processes for a nuclear energy startup, using Python, SQL, APIs, and AI-enabled automations.
Senior Staff /Staff Software Engineer
Senior Staff or Staff Software Engineer at Campus, a venture-backed accredited two-year online college. A hands-on, high-ownership role: take ambiguous, cross-cutting problems across the full stack, shape architecture and technical direction, and mentor engineers in a small NYC-based (hybrid) team. Pay is $210–240k (Staff) or $255–280k (Senior Staff) plus equity.
Staff Software Engineer
Hands-on staff-level IC building AI workers (agent workflows) for US manufacturers' back-office teams like quoting and procurement, owning 0→1 initiatives from design through production. Stack is TypeScript end-to-end — React, Node.js, PostgreSQL on AWS and Kubernetes. Onsite in NYC five days a week.
Software Engineer
0→1 product engineer at an early-stage startup building AI workers for US manufacturers' back-office teams. Ships full-stack features end-to-end with TypeScript, React, Node.js, and PostgreSQL — including LLM agent workflows and integrations with legacy ERPs/CRMs — onsite in NYC five days a week.
Senior Software Engineer
Hands-on senior IC role building AI workers (agents) for manufacturers' back-office functions at Forgepoint — leading 0→1 initiatives from technical design through production operation on a TypeScript/React/Node.js/PostgreSQL stack running on AWS and Kubernetes. Onsite in New York City five days a week.
Senior Software Engineer
Senior Software Engineer on Alice & Bob's Pulse team in Paris builds and maintains the low-level software stack controlling quantum hardware — drivers and hardware abstraction layers for AWGs, digitizers, and custom FPGA-based instruments. Core technologies are Python, DSP, and low-latency hardware interfaces, with a strong technical leadership and mentoring component.
Founding Engineer
Build core marketing platform features end-to-end, from idea to production, with full ownership and AI-assisted tooling.
Senior Python Developer
About Us: We are an innovative technology startup focused on transforming professional services through cutting-edge software solutions and deep domain expertise. Our platform automates complex workflows, engaging…
Software Engineer, Agent
Full-stack engineer building the LLM agent layer behind OpenArt's AI creative products: extending the agent harness (tool use, memory, multi-step planning, sub-agents), developing MCP servers and CLI tooling, and shipping production React/Next.js frontend experiences used by millions of creators.
Senior/Staff Software Engineer, Agent
Senior/staff engineer to own the end-to-end agent architecture (harness, orchestration, memory, evals, MCP/CLI tooling) behind OpenArt's AI creative products like Director, while staying hands-on shipping React/Next.js frontends. Requires 7+ years full-stack experience including 2+ years building production LLM agents.
Software Engineer, Enterprise AI Platform
Full-stack engineer building OpenArt's brand-new enterprise platform: workspaces, roles/permissions, SSO, audit logs, and usage-based billing for an AI creative tool used by millions. Day to day spans React/Next.js frontends and Node.js/TypeScript or Python backends, working closely with founders and enterprise customers.
Senior Software Engineer, Enterprise AI Platform
Senior Software Engineer building enterprise-grade infrastructure for an AI storytelling platform. You will design and implement workspaces, RBAC, SSO, and usage-based billing systems using React, Next.js, and cloud-native backend architectures to scale the product for enterprise customers.
Senior Systems Engineer
Senior Systems Engineer defining requirements, architecture, and validation for autonomous battery-electric freight rail vehicles at Parallel Systems. Bridges vehicle hardware and command-and-control software, leading design reviews, trade studies, FMEA, and integration with railroad train control systems.
Senior Software Engineer - Mobile
Senior mobile engineer at Read AI, an AI-powered meeting/collaboration assistant, owning major features end-to-end across iOS (Swift/SwiftUI) and Android (Kotlin/Jetpack Compose). Day-to-day work centers on real-time audio capture/processing, AI-powered in-app chat experiences, performance optimization, and mentoring other engineers.
Software Integration Engineer
Software Integration Engineer at fab2, an early-stage semiconductor equipment startup in Austin, TX. The role owns end-to-end integration of in-house chip-manufacturing tools: hardware bring-up and debug, writing control software and firmware in C, Rust, and Python, and coordinating fixes across firmware, electronics, mechanical, and process teams.
Founding Engineer
Founding engineer at a stealth-stage AI startup building multi-modal voice, SMS, and email agents that automate operations for a large consumer-services industry. You'd own a core product domain end-to-end, shipping daily across a full stack of TypeScript/React/Next.js, Node.js, Python voice pipelines, and LLM/agent tooling, on-site in New York.
Member of Technical Staff - ML Data
Veeda AI (Toronto) is hiring an ML engineer to design, build, and own ML methods for selecting, enriching, annotating, and quality-checking large-scale datasets for multimodal foundation world models for Physical AI. Day-to-day involves end-to-end ML method development, experimentation, and data pipelines in Python and PyTorch.