2,916 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Software Engineer - 3D Graphics
Early-career 3D graphics engineer at Mach9 building the browser-based point-cloud engine behind Digital Surveyor, which turns massive LiDAR datasets into CAD deliverables. Day-to-day work spans GPU rendering and picking, clipping/snapping geometry, and performance tuning with TypeScript, WebGL, and Three.js.
Software Engineering Intern
Summer 2027 software engineering internship (June 14–Aug 20) at Arc Boat Company, an electric boat startup, based at its Torrance, CA headquarters. The intern owns a project end-to-end across the boat infotainment unit, mobile app, backend, or boat firmware, with exposure to Python/TypeScript/AWS or STM32 firmware.
Software Engineer
Backend software engineer at FISPAN in Vancouver building accounting software integrations and plugins that reshape corporate banking applications. The work centers on designing and implementing distributed Java services using AWS, Postgres/MongoDB, and Docker/Kubernetes.
Software Engineer Intern, Rhoda Platform
Rhoda AI is hiring a Robot Software Engineer Intern in Mountain View to build the software platform behind its generalist humanoid robots — networking and communication infrastructure, data collection pipelines, telemetry, teleoperation, inference infra, and developer tooling — with code shipping to real robots by the end of the internship. Core skills: C++, Python, Golang, or Rust, plus networkin
Founding Engineer
Equity-only founding engineering role at an early-stage startup building and studying AI/foundation models for scientific discovery. Day to day you'd design, train, fine-tune, and evaluate ML models and build training infrastructure and data pipelines, mainly with Python and frameworks like PyTorch, JAX, and TensorFlow.
Software Engineer
Software Engineer at OnGrid (Gurgaon) building enterprise-grade, scalable web applications for its background-verification and digital trust platform, working on the product from the ground up. Core stack is JavaScript with React and VueJS, plus HTML5/CSS3 and strong CS fundamentals.
Member of Technical Staff - Research, Cyber
Researcher at Vals AI designing and building next-generation AI benchmarks for cybersecurity — creating evaluations of real-world LLM capabilities and risks, analyzing model performance, and publishing findings while collaborating with foundation model labs. Requires hands-on security experience (pentesting/red teaming), systems depth, and daily LLM use.
Member of Technical Staff, Kernels
Designs, implements, and optimizes custom ML kernels powering mirendil's end-to-end frontier AI model training — profiling workloads, reducing memory-bandwidth bottlenecks, improving hardware utilization, and enabling low-precision arithmetic formats across compiler/runtime stacks. Based in San Francisco with $300k–$400k base plus equity.
Member of Technical Staff — Company Building
A company-building role at frontier AI lab Mirendil: a technically credentialed operator working directly with founders to drive top priorities, land the first research customers, run the company operating rhythm, and own special projects. Requires a STEM MS/PhD plus industry experience; base salary $200k–$350k plus equity.
Senior Software Engineer
Senior backend/systems engineer at a fast-growing healthcare AI startup in San Francisco, on-site 5 days/week. Day to day: design, build, and operate production services plus LLM/AI-agent workflows automating healthcare operations like scheduling, billing, insurance, and payments, using Python, TypeScript, AWS, and Cloudflare.
Senior Software Engineer, Security
Senior security engineer at Alchemi, whose AI speeds up drug development, owning application and cloud security end to end: identity and access (SSO, OAuth, tenant isolation), compliance programs like SOC 2/ISO 27001, monitoring, and incident response. Small senior team based in New York City serving heavily regulated pharma customers.
Member of Technical Staff, Deployment Engineer
Customer-facing product engineer at an AI-infrastructure startup: owns end-to-end customer engagements — technical discovery, demos, and deploying Judgment's agent eval/monitoring platform into customer codebases — then turns feedback into product direction, prototyping features (often with coding agents) and shipping PRs.
Staff Software Engineer
Staff engineer at Dreamerlabs (posted via coreflow) owning an AI-entertainment product area end to end — frontend, backend, and GPU inference — for a consumer platform with 20M monthly visitors. Stack: TypeScript/Next.js/React product side; Python serving LLM/TTS/diffusion models on self-hosted GPUs. On-site in North Sydney.
Senior AI Systems Engineer: Make Apartments Run Themselves
Senior engineer at Hyatus Living builds backend services, cloud infrastructure, and AI agent workflows that run apartment operations autonomously — coordinating guest service, maintenance, and cleaning end to end. Core stack is backend systems (APIs, databases, queues) plus hands-on AI/coding-agent orchestration. Remote worldwide; $40k–$75k plus equity.
Founding Engineer – Stealth
Founding engineer at a weeks-old stealth healthcare startup building agentic LLM systems that take real-world actions and prove outcomes across siloed healthcare organizations. You'd own the core product end to end — shipping fast, talking to customers, and working with LLM orchestration on a very small founding team.
AI Voice Platform Software Engineer
ZukiTalk is an early-stage AI voice/text outreach product for automotive dealerships that calls customers after vehicle inspections to collect service approvals. The engineer owns architecture and development of the PHP/Symfony + PostgreSQL platform on AWS, building Twilio-based Voice AI workflows, dealership API integrations, and improving production reliability.
Software Engineer Intern
Quizcademy is hiring a software engineering intern ($30/hr, 20 hrs/week) in Seattle or San Francisco to write, test, and debug assigned code, help maintain and scale existing systems, and document/report progress to supervisors. Requirements center on CS degree enrollment and strong OOP, data structures, and algorithms fundamentals.
Software Engineering Experts ( Freshers )
Part-time contract software engineer role (open to freshers) at Neutals, an early-stage AI training-data company: build web apps, APIs, internal tools, and automation for AI data-annotation workflows. Stack spans Python/JavaScript-TypeScript, APIs, databases, and cloud infrastructure; remote with a Bangalore location signal.
Founding Engineer/OPs
Founding engineer/ops at sqft+, a proptech startup whose platform tells homeowners and property professionals whether a renovation or extension is worth it. Day to day: run platform uptime and deployments, build UK property data pipelines, ship the LLM-powered report tool, and set up CI/CD, security and payments.
Senior Software Engineer - Data Search (remote, Europe)
Senior Software Engineer on Modash's Data Search team builds and improves customer-facing creator search across 400M+ profiles — retrieval, filtering, ranking, relevance, and low-latency serving — including multimodal embeddings and LLM-powered features. Stack: Python, TypeScript/Node.js, AWS/GCP, Elasticsearch, Milvus, Airflow, PySpark.