2,916 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Software Engineer (Afirmativa para Mulheres)
On-site software engineer (affirmative opening for women) at Tako, an AI payroll & people-ops startup in São Paulo. You build data-intensive TypeScript microservices and APIs on a serverless AWS architecture that powers payroll and recruiting products.
Member of Technical Staff, Early Career
Build and deploy AI-powered clinical systems that transform patient-clinician conversations into structured notes, using LLM orchestration and retrieval pipelines in a healthcare-focused startup.
Software Engineer
A software engineer role at a solar-energy monitoring startup in Vitória, Brazil, focused on investigating production issues, debugging, SQL/data analysis, and improving platform reliability rather than customer support. Core stack includes SQL/PostgreSQL, JavaScript/TypeScript or Python, APIs, logs, and observability tooling, working hybrid (2 days/week in office).
Member of Technical Staff — Model Optimization and Inference (New Grad)
Optimize and deploy real-time AI avatars by accelerating LLM, audio, and diffusion model inference to sub-500ms latency using quantization, KV cache tuning, and custom kernels.
Member of Technical Staff — Model Optimization and Inference (Experienced)
Optimize and deploy real-time AI avatar models for sub-500ms latency, focusing on KV cache, quantization, and kernel-level acceleration across LLMs, audio, and diffusion components.
Founding Engineer
About Share Share is a venture-backed startup building the global marketplace for bandwidth. We enable anyone to build their own programmable internet network, in seconds. Today, bandwidth is bought and sold through…
Software Engineer
Software Engineer at Remodel Health We are Remodel Health, the health benefits platform that revolutionizes health benefits to resource organizations with missions that matter. Our platform shifts organizations from…
Staff Software Engineer
Staff Software Engineer who owns high-leverage architecture and hands-on production code across Blitzy's agentic AI software development platform, reporting to the CTO. Core stack includes Python, Terraform, and AWS/GCP, plus microservices, APIs, and AI platforms, while mentoring engineers in an in-person Cambridge, MA setting.
Engineering Manager, Platform
About Fora Fora is the modern travel agency, empowering the next generation of entrepreneurs to build thriving travel advisory businesses. We're modernizing the $100B+ travel industry with AI woven through every part…
Early Career Systems Engineer
Early-career systems engineer supporting the architecture, requirements, analysis, verification, and hands-on integration & test of airborne and spaceborne remote-sensing systems at Matter Intelligence (El Segundo, CA, onsite). Core tools include Python/MATLAB for engineering analysis, plus requirements, interface, and anomaly-resolution work.
Flight Software Engineer
Senior flight software engineer who owns payload flight software for Cowboy Space's satellites — writing Rust for attitude/pointing state machines, command handling, and telemetry/data storage, setting the team's architecture, building HIL/simulation test infrastructure, and driving toward a near-term on-orbit demonstration. On-site in San Carlos, CA or Kent, WA.
Staff Software Engineer
Quantic is seeking a Senior Software Engineer to develop and scale their interactive learning platform, AI tools, and content authoring systems. The role requires extensive experience with Ruby on Rails, PostgreSQL, and modern front-end frameworks like React in a remote, startup-focused environment.
Staff Software Engineer, Advanced Pilot Assistant Software (Autonomy/Robotics)
Lead the design and deployment of autonomy, robotics, and embedded systems for an AI-powered pilot assistance platform. You will develop mission-critical software using C++ and Python, optimize for edge compute environments, and integrate sensors and perception pipelines to support real-time decision-making in aviation.
Software Engineer
Software engineer building Boom's rental financial services platform — tenant screening, rent reporting to credit bureaus, CRM, and AI agents — owning user-facing products and backend services in production. Stack is primarily Ruby (Grape/Sequel) with Node.js, React/Next.js, and TypeScript; heavy emphasis on using AI coding agents. Mid-to-senior level, based in Austin, TX.
Staff Software Engineer - Data Products
Staff engineer on Dune's Data Products team owns the end-to-end lifecycle of curated onchain datasets — building dependency-aware orchestration, schema evolution, backfills, and data-quality/alerting systems in a polyglot backend stack (Go, Kotlin, Rust, Python, SQL). Fully remote role for a ~50-person blockchain data startup across Europe and eastern US timezones.
Software Engineer, Developer Infrastructure
In-person San Francisco role building developer infrastructure at Numeric, a startup modernizing accounting/finance software. You'd own CI/CD and gated deploys, dev environments, infrastructure-as-code (OpenTofu/Spacelift on AWS), observability, security, and AI-agent tooling, using TypeScript, Postgres, and Datadog.
Founding Engineer
Founding full-stack engineer at a seed-stage fintech building AI home-insurance price prediction and a 3-year price guarantee. Day to day: own features end-to-end — backend APIs in FastAPI/PostgreSQL, frontend in Next.js/Tailwind, and integrations with Stripe, Auth0, and Canopy Connect.
Senior Software Engineer
Builds and maintains a cloud-based platform for adaptive clinical trial design using Python, APIs, and AWS, integrating ML models to optimize drug development workflows.
Desarrollador .NET / Software Engineer
Noves, a US-based blockchain data-analytics startup, is hiring a .NET/C# software engineer (2+ years) in Uruguay to work remotely with a distributed US/Europe team building software that analyzes blockchain data like Ethereum. Advanced English for technical conversations is mandatory; DevOps, Python, React, NoSQL, and blockchain knowledge are pluses.