2,918 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Founding Engineer
Backend-leaning founding engineer at an early-stage healthtech startup, owning the systems behind real-time drug pricing, claims adjudication, and payments between brokers, pharmacies, and the platform. Day-to-day is backend API, database, and infrastructure work in Python/FastAPI and PostgreSQL on GCP, with some React/TypeScript.
Software Engineer, Automation & Controls
Designs and implements PLC, SCADA/HMI, and C++/Rust control systems for uranium enrichment equipment, ensuring safety-critical automation and real-time reliability.
Fluid Systems Engineer, Responsible Engineer
Design and deploy fluid systems for a uranium enrichment facility, ensuring reliability and manufacturability while collaborating with manufacturing and operations teams.
Software Engineer
Builds high-performance control software in C++/Python for uranium enrichment systems, focusing on safety, real-time processing, and distributed hardware coordination.
Summer 2027 Internship - Software Engineering
Summer 2027 software engineering internship at General Matter, a startup enriching uranium for nuclear fuel in Los Angeles. Interns build high-performance backend services, fault-tolerant distributed systems, or developer tooling in C++ and Python to support mission-critical infrastructure with real physical consequences.
Software Engineer, Enterprise Systems
Hands-on Integration Engineer building and owning integrations across MES, WMS, QMS, PLM/PDM, and ERP systems using C#/.NET and REST APIs in a uranium-enrichment manufacturing environment.
Software Engineer, Data Visualization
Design and build real-time data visualization and operator-facing interfaces (live dashboards, HMI/SCADA) for uranium enrichment test stands and production systems, rendering high-throughput sensor telemetry. Core stack: TypeScript/React and Python with high-performance rendering and streaming time-series data.
Founding Engineer (Python / FastAPI / Next.js), Supply Chain SaaS
Founding Engineer at a pre-launch B2B SaaS startup modernizing supply chain operations for consumer goods manufacturers. The first technical hire will own the full stack (Python/FastAPI/Next.js), architecture decisions, and engineering culture, working closely with the hands-on founder to build and ship the MVP from Brazil.
Senior Software Engineer
Senior engineer at an early-stage startup building autonomous AI agents that automate accounting and finance workflows end-to-end. Day to day you own a finance domain, doing context engineering, data ingestion from multiple sources, and building highly scalable backend/infra systems in a modern language like Python, Go, or Rust.
Robotics Software Engineer
OpenShelf is building an open-source AS/RS system to automate physical inventory (storage, retrieval, real-time tracking). This on-site role in midtown Manhattan maintains and improves the Python/FastAPI backend and hardware control layer—motors, scales, scanners over serial, Modbus, GPIO—plus internal tools, dashboards, testing, and deployment to real devices.
Staff Software Engineer
On-site engineer at a startup building the world's first modular accelerator, taking technical lead on industrial software: React/Node.js dashboards, APIs, and real-time apps integrated with industrial automation systems, with cybersecurity best practices. Base pay $150–200k in Hebron, KY.
Founding Software Engineer
First technical hire (founding engineer) at DMC Technologies, building Momentum, a platform that compresses aerospace hardware design cycles by turning serial workflows parallel. Backend-first Python role with whole-product ownership (frontend, deployment) plus building LLM/agentic coding systems; fully remote within the US.
Senior Software Engineer
Senior backend engineer at Nibbana, an early-stage climate-tech startup connecting farm and food supply-chain data. You'll build scalable backend services, APIs, and data pipelines using TypeScript/Node.js and Python, with strong SQL, cloud infrastructure, and IaC (Terraform/Pulumi), owning projects end-to-end from architecture to production.
Senior Software Engineer
Senior Software Engineer writing production TypeScript across the stack at Avante, an AI-native benefits intelligence platform. Day to day: building scalable services and APIs, integrating HRIS/ticketing systems, data modeling, and mentoring — based in Seattle, 4 days a week in office.
Software Engineer
Software engineer at Clusia, an AI-native startup that runs mandated audits (ACH, BSA/AML) for fintechs and banks. You'd join a lean NYC-based founding team building full-stack product, cloud infrastructure, and LLM/agent-powered features alongside the CTO.
Software Engineer I to III, Digital Engineering
Software Engineer (levels I–III) on True Anomaly's Digital Engineering team builds, operates, and maintains in-house applications and services that connect product data across the product lifecycle — shipping features across the stack (services, APIs, data models, web UIs) in Go and TypeScript. Fully onsite in Denver, CO or Long Beach, CA.
Senior Python Developer – Calibration & Device Intelligence
Senior Python developer joining Nord Quantique's Calibration & Device Intelligence team in Sherbrooke: builds and maintains the software that automates calibration, characterization, and operation of quantum processors, working at the intersection of software engineering, experimental physics, orchestration, and ML/optimization.
Senior Software Engineer, Payments & Ledger
Remote (US-based) senior backend engineer who owns the money side of Splash Sports: deposits, withdrawals, entry fees and payouts, fraud/KYC checks, and the double-entry ledger with daily reconciliation. Day-to-day is NodeJS/TypeScript services on AWS, plus payment processor and KYC vendor integrations and Snowflake/dbt finance data.
Senior Software Engineer, AI DevEx
Senior remote engineer to build Splash Sports' 'software factory': cloud coding environments and autonomous AI agents that turn tickets, bugs and Datadog alerts into tested, reviewed pull requests, with guardrails for a real-money gaming business. Core stack: AWS (ECS/Fargate, Lambda, RDS), Terraform/CDK, TypeScript/Node, and tools like Claude Code, Codex and Cursor.
Senior Software Engineer, Infrastructure & Release
Own Feanix's entire delivery ecosystem for its Python/AWS dairy-genomics platform: CI, test and release engineering, observability and SLOs for overnight farm pipelines, plus cost, access control and infrastructure-as-code. Success is measured by how fast other engineers ship and how reliably decisions land on farms.