2,916 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Senior Software Engineer
Senior Software Engineer leads API integrations between Atoms' food infrastructure platform and external systems (POS/ERPs), architecting scalable backend solutions in Java/Go/Kotlin/C++/C# to ensure reliable data exchange for restaurant partners. Focuses on data flow, technical mentorship, and cross-functional collaboration to drive business impact.
Software Engineer
Builds and maintains APIs to integrate Atoms’ food infrastructure platform with restaurant systems (POS/ERPs), focusing on backend development in languages like Java/Go/Kotlin to ensure reliable data exchange and system synchronization.
Senior Software Engineer, Simulation
Senior Software Engineer building the log-replay and scenario-execution core of Atoms' robotics simulation platform: turning recorded robot logs into deterministic, replayable, scored test cases, wiring simulation into CI, and building reporting and tooling for other engineers. C++ and Python, robotics sensor data, onsite in San Francisco.
Senior Software Engineer
Architect and scale Picnic's real-time logistics and operations backend platforms using Java and Go. You'll lead cross-team backend initiatives, own architecture for data stores and APIs, and mentor engineers in a fast-moving, onsite environment.
Senior Software Engineer - Data Infrastructure
Build and maintain data infrastructure pipelines and tools for a Physical AI startup, enabling real-time and batch processing to extract insights for food, mining, and transport industries using Java/Go and cloud platforms.
Senior Robotics Systems Engineer
Senior Robotics Systems Engineer at a robotics startup building autonomous trucks for industries like food, mining, and transport, integrating hardware, software, and AI to deploy and scale real-world autonomy systems.
Software Engineer - New Grad
Build and optimize scalable backend systems and APIs for Physical AI robots in food, mining, and transport industries using Java/Go, cloud platforms, and distributed systems.
Software Engineer
Builds and maintains APIs for integrating restaurant platforms with POS/ERP systems, focusing on backend development in languages like Java/Go/Kotlin to ensure reliable data exchange and system synchronization for food infrastructure automation.
Senior Software Engineer
Senior Backend Engineer designing and scaling real-time logistics platforms in Java/Go, owning architecture, APIs, and distributed systems for Picnic’s meal-delivery operations.
Senior Software Engineer – Bionic Enterprise Platform
Senior software engineer on Atoms' Bionic Enterprise Platform team, building shared backend infrastructure, APIs, SDKs, and AI-powered app foundations that let Forward Deployed Engineers ship and operate Physical AI robot deployments reliably. Onsite role in Mountain View/San Francisco using cloud, containers, and Kubernetes.
Senior Software Engineer - Transport Infrastructure
Senior software engineer at Atoms building transport infrastructure for autonomous vehicle fleets: developer tooling and APIs, GPU training/simulation clusters, vehicle-to-cloud networking, and real-time telemetry. Onsite in San Francisco; stack spans Go/C++/Rust/Python, AWS/GCP/Azure, Kubernetes, and gRPC.
Senior Software Engineer, Platform
Platform Software Engineer at Reducto owns the infrastructure behind the company's document-understanding API: scaling Python services, queues, and model-serving paths on Kubernetes for better latency, reliability, and cost. It's a high-leverage, in-person role at an early-stage AI startup's San Francisco office.
Senior Software Engineer
Senior Software Engineer at Five Sigma, an insurtech startup building an AI-driven insurance claims platform. Day to day: design, develop, and deploy scalable backend/full-stack software leveraging LLMs, lead features, run code reviews, and drive agile practices. Core stack includes Python, React/JavaScript, and cloud (GCP).
Senior Software Engineer
Senior full-stack engineer at Kaizen building modern software that replaces legacy federal government systems — shipping AI-powered intake flows, case routing, and constituent portals end to end. Core stack: React/Next.js, Node.js, TypeScript, Postgres, with AI coding tools (Cursor, Claude, Copilot) embedded in daily work.
Software Engineer
Full-stack engineer at Kaizen building AI-native software that replaces legacy systems for US federal agencies — intelligent intake flows, AI case routing, and constituent portals. Stack is React/Next.js, Node.js, TypeScript, Postgres with heavy use of AI coding tools; hybrid role, 4 days/week in the NYC or DC office.
Senior Software Engineer - DevEx
Senior engineer on the developer-experience team of a fast-growing AI infrastructure company in Stockholm: improving and extending its SDK, CLI and platform interfaces, working directly with customers, and sharing on-call for owned systems. Office-based in Stockholm, with emphasis on API ergonomics and async/concurrent programming.
Principal Software Engineer / Rust Programmer - Platform (Remote US)
Builds and maintains the core Rust-based infrastructure for an AI platform, focusing on scalability, reliability, and ML workflow support.
Senior Engineering Manager (Patient New Verticals)
Leads the engineering team behind Headway's new patient-acquisition channels — provider referrals, insurer/payer directories, and phone booking — taking them from zero to one and building AI into referral, routing, and booking flows. People-management role (4+ yrs managing engineers) on a Python/TypeScript, React, AWS, Postgres stack.
Software Engineer, Core Data
Software engineer on the Core Data team at Aquatic Capital, a quantitative investment manager. Day to day you build and maintain market data feed handlers for proprietary equities protocols (ITCH, GTP, PITCH) and quant-ready data archives in C++ and Python, supporting research and trading as the firm expands into new global markets.
Senior Flight Software Engineer
Senior Flight Software Engineer at Relativity Space developing safety-critical flight software for the Terran R rocket, focusing on real-time control systems, telemetry, and integration with vehicle systems. Core technologies include Rust, C++, Linux, and networking (TCP/IP, UDP).