2,916 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Senior Software Engineer
Senior full-stack engineer at a startup studio, shipping production features across backend (Node.js/Python/Java) and frontend (React/Vue), building scalable APIs and integrating AI tools into applications. Long-term hybrid role in Argentina with one day per week at a Palermo coworking space.
Research Software Engineer - Scientific Computing & GPU Infrastructure
Builds and maintains scientific Python software for fusion research, profiling and optimizing numerical workloads and deploying them on NVIDIA GPU servers and AWS. Focus on reproducible environments, testing/CI, shared GPU infrastructure (scheduling, access control, APIs) alongside physicists in Munich.
Software Engineering Team Lead
Hands-on engineering team lead for MetalBear's Cloud Integrations team building mirrord, a Kubernetes development platform that lets developers and AI coding agents run code against live clusters before deploying. Sets technical direction while coding in Rust and working with Kubernetes, cloud services, databases, and message brokers.
Senior .NET Engineer (Real-time Logtech)
Builds real-time logistics software in .NET to make freight operations reliable and scalable, handling live data and evolving business rules.
Software Engineer (Core)
Software Engineer on the core team at Majestic Labs, an AI startup building custom AI servers for large-scale inference and training. Day to day you develop API layers, command submission pipelines, and memory management in the software stack, collaborating with hardware architects and kernel driver developers. Core tech: C on Linux, GPU programming, with Python/C++ a plus.
Programmeur moteur senior / Senior Engine Programmer
Senior engine programmer at a new Montreal game studio (with partners in Hangzhou) who owns and maintains the core engine, builds low-level systems like streaming and serialization, assists Epic Games/vendor integrations, and optimizes CPU/GPU/memory/load-time performance. Core stack: C++, Unreal Engine, multithreaded programming and profilers.
Member of Technical Staff, Robotics Infrastructure
Builds and runs the platform that deploys and evaluates learned robot policies (VLAs, imitation learning, DAgger) on real robots — from on-robot inference and tuning to evaluation frameworks, orchestration across robot stations, and partner-facing product — using Python, Linux, Docker, and cloud-side infrastructure.
Staff Software Integration Engineer
Owns the architecture, development, and sustainment of real-time I/O software and telemetry infrastructure for aircraft integration benches and simulation environments — building modern C++ for embedded Linux targets, Rust telemetry services, hardware abstraction layers, and binary/network protocols (ARINC 429, CAN, UDP/TCP).
Senior IT Systems Engineer
Senior IT systems engineer at Freeform (AI-native manufacturing) running a hybrid Microsoft/Azure identity stack, Windows and Linux servers, SAN storage, AWS/EKS Kubernetes, networking, and security tooling onsite in Hawthorne, CA. Acts as senior escalation point for incidents, mentors junior IT staff, and joins on-call rotation.
Senior Software Engineer (python) - XTM One
Build the core platform of XTM One, Filigran's AI-native cybersecurity threat management product, as one of the first engineers on a new squad. Day to day: full-stack development in Python and TypeScript, architecture for SaaS and on-premise deployment, rapid prototyping of AI-agent features, and open-source community engagement.
Software Engineer – Platform Security
Own the security architecture of FriendliAI's multi-tenant, Kubernetes-based serverless AI inference platform: design control-plane/data-plane security, build guardrails as code with Terraform and Helm, and implement IAM, secrets management, network segmentation, and runtime container detections. Hands-on role requiring 5+ years securing cloud-native platforms on AWS and Kubernetes.
Software Engineer - Python
Hands-on backend engineer taking founding-level ownership of a real-time operations platform (Python + PostgreSQL on AWS) for aviation/transport turnaround logistics. Day to day: building stateful microservices, event-driven pipelines, and multi-tenant architecture, plus on-site time with live operations staff in London.
Distributed Systems Engineer
At Relace, a venture-backed AI inference cloud serving 800B+ tokens a day, you build the globally distributed serving layer: a Rust routing service and Kubernetes services managing a multi-cloud GPU fleet, deciding request placement and capacity scaling. Senior, on-site in San Francisco five days a week, with competitive pay plus equity.
Manufacturing Data & MES Engineer
Design and implement the manufacturing execution system (MES) and plant-data backbone for a rare-earth magnet factory, integrating SCADA, historians, and ERP while scaling from pilot to a 1M sq ft facility.
Senior Systems Test Software Engineer
Builds and owns the testing platform for the software running on Saronic's autonomous vessels, unifying Rust unit/property tests, VM integration tests, hardware-in-the-loop rigs, replay and simulation, plus fuzzing and fault injection, into CI-run verification infrastructure. Uses Rust/C++, Python, and NixOS on-site in Austin, TX.
Robotics Control Software Engineer
Builds robotics and lab-automation software — motion planning, manipulation, perception, instrument integration, and task-execution frameworks — to automate biological experiments hands-on with robotic arms, mobile robots, computer vision, and simulation. Core stack includes Python/C++/C#, ROS2/MoveIt, OpenCV, and AI/autonomy tooling.
Engineering Manager
Player-coach engineering manager (~20% coding, 80% leading) who owns end-to-end delivery for a team at Kernel, which builds a business identity registry (KERN ID) for AI agents. Sets technical direction, hires and grows engineers, and works across an AWS/NodeJS/TypeScript/Postgres/Clickhouse/Kubernetes stack with a NextJS frontend.
Software Engineer
Software Engineer at Kashable, a venture-backed fintech offering employee loans as a workplace benefit. Hybrid NYC role building consumer-facing and back-office apps across the stack: Java backend, Spring/Hibernate, SQL/NoSQL, ETL and cloud/SaaS integrations, plus front-end work with Next.js and React.
Senior Golang Engineer (United States)
Senior backend engineer at Jumpspeak, a language-learning app, building and scaling Golang systems for AI conversations, speech processing, lesson content pipelines, and subscriptions. Core work spans LLM/speech API integrations, data architecture, and reliability on PostgreSQL, Redis, message queues, and cloud infrastructure.