2,918 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Staff Software Engineer, Infrastructure
Staff-level infrastructure engineer in San Francisco building and maintaining the infrastructure behind Hercules' AI app-development platform — the AI agent, app builder, app hosting, SDKs, and enterprise platform — using TypeScript, React, Postgres, Redis, Temporal, Docker, and Cloudflare/AWS.
Staff Software Engineer, Product
Staff-level product engineer building user-facing features for Hercules' AI-powered app-building platform — the AI Agent, App Builder, SDK, mobile PWA, and platform. Core stack is TypeScript, React, Postgres, Redis, and frontier AI models (OpenAI, Anthropic, Google), working in-office in San Francisco.
Staff Software Engineer, AI Agent
Staff-level engineer who builds, owns, and improves Hercules' AI coding agent, including online/offline evals and research to make the agent cheaper, faster, and more accurate. Works with a TypeScript/React stack plus Postgres, Redis, Temporal, and frontier models from OpenAI, Anthropic, and Google.
Software Engineer, AI
Ambrook is hiring a Software Engineer, AI in San Francisco to build LLM-powered systems that automate bookkeeping and financial workflows for farmers and small-business owners. Day to day involves building AI assistants, document extraction, evaluation infrastructure, and internal AI tooling using TypeScript, Next.js, and LLM APIs on Google Cloud.
Member of Technical Staff
Join a seed-stage San Francisco startup building the simulation, observability, and evaluation layer for voice AI agents. You'll architect scalable AWS infrastructure (Lambda, EC2, WebSockets, SIP) handling millions of real-time conversations, owning the stack end to end in a full-time, in-person, customer-facing role.
Member of Technical Staff - Model Optimization and Inference
ML infrastructure/systems engineer at Nuance Labs owning end-to-end inference optimization for real-time AI avatar models (LLMs, audio, diffusion) — tuning KV cache strategies, deploying serving frameworks like vLLM and TensorRT-LLM, applying quantization, and profiling latency/throughput. On-site in Seattle 5 days/week with relocation and visa support.
Senior/Staff Software Engineer
Senior or Staff full-stack software engineer at Opal Security building identity governance and access-management features end to end — from architecture decisions through production — for Fortune 500 and startup customers. Full-stack product engineering with direct customer validation; identity/IAM/security experience is a plus.
Senior/Staff Software Engineer
Senior/Staff Software Engineer at Loancrate, a remote US startup building AI-native mortgage loan origination software. You'd ship full-stack features in TypeScript/React/Node.js on AWS and architect multi-step AI agents for lending workflows. Pays $150k-$350k plus equity; no visa sponsorship.
Founding Engineer
Founding engineer at Spring, a Series A AI-native lender, building an AI CFO agent and extending in-house lending, payments, and bank-transaction analysis systems. Day to day: strong Python backend work, daily AI-native coding with agents, and owning projects as an early technical leader. On-site in New York; $175k-$250k plus equity.
Senior Python Developer
Senior Python Engineer for a funded early-stage fintech startup in Dubai building an AI-powered, fully automated trading system for real-world prediction markets (B2B). Day to day: 0-1 building with Python, a major cloud platform, and AI coding tools, working hybrid from Dubai as part of the founding team.
Member of Technical Staff, Software
Builds the software that scales Build AI's physical-labor data collection: an Android/web vendor platform for device assignment, attendance, and payments, petabyte-scale upload/storage pipelines, and ML-based data QA. Full-stack, end-to-end ownership, in person in Shenzhen alongside the founders.
Senior Software Engineer
Senior Software Engineer at Groupthink, an early-stage startup building meeting facilitation and productivity software. You'll ship end-to-end features (frontend, APIs, bot services and lambdas) with PHP/Laravel, React, Python, and AWS on a small, 100% remote US team.

Software Engineer, Fleet Management
Software engineer on Wayve's Fleet Management team building full-stack features across web apps, backend services, APIs and cloud infrastructure to deploy, monitor and operate a global fleet of autonomous vehicles. Stack touches React/TypeScript on the frontend and backend services in Go/Rust/Node.js on Azure/Kubernetes.
Software Engineer, Advanced Pilot Assistant Software (Autonomy/Robotics)
Beacon AI is hiring a Software Engineer to build advanced pilot assistance (autonomy/robotics/embedded) software for its aviation flight-safety platform. Day to day you'll write production Python/C++, integrate software with sensors and edge compute hardware, and help test and deploy safety-critical autonomy systems.
Senior Software Engineer, Advanced Pilot Assistant Software (Autonomy/Robotics)
Senior Software Engineer building autonomy, robotics, and embedded software for Beacon AI's pilot assistance / flight safety platform — writing Python and C++, integrating with sensors and edge compute, and validating safety-critical systems. Hybrid role based in San Carlos, CA with 3+ days onsite per week.

Senior Software Engineer, Fleet Management
Senior engineer on Wayve's Fleet Management team building the full-stack platform that connects operators and engineers to a global autonomous-vehicle fleet — OTA/software deployment, vehicle health, telemetry tooling and robotaxi dispatch integrations. Stack includes React/TypeScript, Rust/Go/Node.js, and Kubernetes/Azure/Bazel.
Staff Software Engineer, Cloud Infrastructure
Staff Software Engineer to lead Beacon AI's AWS cloud foundation and LLM platform: designing IaC-based infrastructure, CI/CD, RAG/vector-search data systems, model endpoints (Bedrock/SageMaker), and eval/observability tooling for aviation AI products. Core stack is AWS (Terraform/CDK), Python, and LangChain; hybrid role based in San Carlos, CA.
Senior Software Engineer, Cloud Infrastructure
Senior engineer who designs, builds, and operates Beacon AI's AWS cloud foundation and LLM platform — IaC-managed infrastructure, CI/CD, secure networking, RAG/vector-search data systems, model endpoints (Bedrock/SageMaker), and observability for AI-powered aviation products. Hybrid role based in San Carlos, CA.

Staff Validation Systems Engineer, AI Validation
Staff-level validation systems engineer at Wayve defining validation strategies, test scenarios, metrics, coverage, and acceptance criteria for L2+ autonomous driving features and new AI Driver capabilities. Day to day is hands-on Python evaluation tooling, SQL-based data analysis, simulation, and communicating evidence to Product, Safety, and Autonomy teams.