2,916 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Software Engineer
Software engineer at an AI infrastructure startup in Dublin building systems that enable large-scale AI deployments. The role spans design, implementation, testing, and peer review, plus customer-facing support from proofs of concept to production, using systems-level languages like Python, C/C++, or Rust.
Software Engineer - Global, Remote
TJM Labs builds AI-driven automation for pharmacies (prescription intake, fax processing, insurance workflows) and is hiring a remote Full Stack Engineer to build Python-based web apps, APIs, internal tools, and third-party integrations while troubleshooting production issues in a fast-paced, high-autonomy team.
Senior Software Engineer, Infrastructure
One of the first infrastructure/SRE engineers at a Series A AI startup that helps consumer brands manage and grow social communities. Owns reliability and scale of high-volume data ingestion and real-time AI agents, builds ETL and data infrastructure on AWS, Kubernetes, Postgres, and ClickHouse, and shares a 24/7 on-call rotation.
Founding Engineer
First dedicated engineer at a seed-stage AI startup that turns unstructured commercial real estate documents into structured intelligence for institutional owners. You'll build portfolio research/chat tools and reliable agentic LLM workflows end-to-end (TypeScript, React, Python, AWS) on-site in Manhattan.
Member of Technical Staff - Engineering Lead, Compute Platform
Engineering Lead for Reflection's Compute Platform in London: you'd build and mentor a team of ~10 systems engineers running a Kubernetes-based multi-cloud compute fleet for large AI training runs. The role blends front-line leadership, hands-on systems work (multi-cloud scheduling, node health, GPU fleet), vendor/deal management, and co-designing fault tolerance with training teams.
Senior Software Engineer
On-site senior engineer at Bellwether Coffee (Berkeley, CA) building the software behind its smart electric coffee roasters: Go/Spanner/gRPC fleet-management services on GKE, the on-device roaster app and OTA update pipeline, and SvelteKit web plus Swift/Kotlin mobile apps for customers and operations.
Weld Engineering Manager, Development
Leads Hadrian's weld development team in Los Angeles, developing and qualifying weld processes for aerospace, defense, and maritime hardware and scaling them into production. Owns welding equipment and process selection, sets welding standards, and grows the team; core skills span NAVSEA, AWS D17.1, ASME Section IX, and advanced welding methods.
Sr. Robotics Software Engineer
Senior robotics software engineer building autonomous mushroom-harvesting robots: depth-camera perception, soft-gripper picking, harvest intelligence, and remote fleet diagnostics. Stack centers on C++ and Python, ideally with ROS2; role is remote within Canada, with relocation to Salmon Arm, BC encouraged.
Staff Software Engineer - Infrastructure
Staff infrastructure engineer at a robotics startup: owns the networking, remote access, real-time video pipelines, CI, observability, and safe fleet-wide release process for autonomous robots working at customer data-center construction sites. Leads infrastructure changes across engineering, ML, and fleet ops teams.
Staff Software Engineer (Product)
Staff software engineer at Tome (makers of Lightfield, an AI-native product for turning complex business data into actionable intelligence) based in San Francisco. The role leads end-to-end product development — working directly with customers, driving architecture and delivery, and mentoring engineers on a TypeScript/React/Next.js/Node.js/GraphQL/PostgreSQL stack.
Staff Software Engineer (Agentic Pipeline Generation)
Staff engineer building AI-driven sales pipeline generation: intelligent agents that ingest and enrich company/people data, discover prospects, and automate personalized outreach. Hands-on full-stack leadership with TypeScript, React, Next.js, Node.js, Apollo GraphQL, and PostgreSQL, based in San Francisco.
Parachute Systems Engineer II
Design, own, and take parachute systems for Inversion's Arc reentry spacecraft from concept through manufacture, testing, and deployment on the Accurate Landing team. Requires an aerospace/mechanical engineering background, textile design experience, and eligibility for a US security clearance; role is on-site in Playa Vista, CA.
Game Developer (Unity, C#, OOP)
Unity (C#) developer building casual/puzzle mobile games at Funtom Games in Hanoi: implements gameplay features end-to-end (logic, in-game UI, animation, VFX), optimizes performance/memory/build size for Android/iOS, integrates ad/analytics/IAP SDKs, builds internal Unity Editor tools, and ships releases to App Store/Google Play.
Software Engineer Intern
Software engineering intern at Sedaro building features end-to-end on its cloud-native aerospace simulation platform: React/TypeScript UI components, Python/Django API services, data visualizations, and automated tests, with exposure to Kubernetes and Postgres. In-person in Arlington, VA.
Senior Software Engineer (QRF)
Senior full-stack engineer and technical lead for Infleqtion's quantum sensing products: guiding a global software team's day-to-day work while developing a React/Next.js frontend, a Python/FastAPI backend, and Rust-based middleware that interfaces with quantum and embedded hardware.
Member of Technical Staff, Applied Research
Applied-research engineer at an AI startup building environments, evals, and datasets for frontier AI labs: designs and runs post-training workflows (SFT, preference optimization, GRPO), builds agent environments, reward/eval systems, and distributed training infrastructure. Core stack: Python, PyTorch, FSDP, FastAPI, GPU clusters.
Software Engineer, Product
Product engineer at Bretton AI building AI-native compliance, risk, and fraud operations software for regulated banks — owning full-stack features from design through production. Work spans case management UIs, document analysis, and agentic AI workflows, using TypeScript, Python, Node.js, React, cloud infra, and workflow orchestration.
Security & IT Engineer
Owns Sofar Ocean's corporate security and identity infrastructure — Google Workspace IdP with SSO/SCIM, MDM/EDR, SIEM triage and incident response — while running the SOC 2 compliance program and handling customer security reviews. Based at the Pier 28 office in San Francisco a few days a week; remote applicants considered.