Founding Engineer Jobs

High-impact engineering role at an early-stage legal AI startup to build production AI pipelines, own platform infrastructure, and drive product decisions alongside founders and customers.

An early-stage AI startup in San Francisco is hiring a founding engineer to build core agentic systems, prototype browser/device automation, and partner directly with founders to ship 0→1 products.

Senior Full-Stack Engineer (Python + React) needed to architect and scale AI-driven pharmacy automation systems at an early-stage HealthTech startup.

Softlight seeks a Founding Frontend Engineer in NYC to build pixel-perfect, production-facing interfaces and help shape product, engineering, and hiring at a seed-stage AI startup.

Help shape Softlight’s product and AI infrastructure as a founding engineer focused on building novel models and shipping product features for PMs, designers, and engineers.

Join a fast-growing AI HealthTech startup as a founding full-stack engineer to build HIPAA-compliant, production-grade AI systems that automate pharmacy workflows and improve patient care.

Softlight is looking for a founding backend engineer in NYC to build and operate novel AI-backed product systems, ship production features, and help define the company's technical roadmap.

Lead the design and deployment of state-of-the-art vision-language and LLM-driven solutions to advance radiology diagnostics at a fast-growing healthcare AI startup.

Lead development of state-of-the-art multi-modal vision-language and LLM-based solutions to transform radiology workflows at a fast-growing medical AI startup.

Join a small, technical GTM team as a founding Sales Engineer to lead technical discovery, run POCs, and shape product and sales playbooks for a developer-first platform.

Lead the ML effort at Retell AI to build, evaluate, and deploy real-time LLM and audio models powering high-traffic voice agents.

Be a founding full-stack engineer at Truth Systems, owning end-to-end product delivery of real-time governance agents that protect users and meet strict reliability and latency requirements.

A boutique recruiting partner to frontier AI and deep-tech startups is hiring a remote Senior 180 Tech Recruiter to own high-impact, end-to-end engineering hires for US/UK clients.

Forgepoint seeks a product-minded Founding Engineer to ship end-to-end AI-driven features (TypeScript stack) and help build the company and product from the ground floor in NYC.

Agentic Studios is hiring a Founding AI Engineer to lead LLM-driven clinical workflow transformation as a co-founder with meaningful equity.

Lead Reducto's security and compliance efforts as the Founding Security Engineer, owning SOC2/HIPAA programs, security tooling, incident response, and enterprise trust-building.

Lead SRE efforts as the founding Site Reliability Engineer at a fast-growing AI company, building scalable, secure, and observable AWS infrastructure and processes.

Early-stage consumer outreach startup seeks a hands-on Founding Product Engineer to build full-stack features, large-scale email automation, and AI-driven recommendation systems on a fully remote team.

Applied Labs seeks a Founding Engineer in New York City to design, ship, and own production-grade AI agent systems focused on reliability and real-world performance.

Be a founding engineer at Magical to build and scale agentic AI systems that automate real-world browser workflows and deliver enterprise-grade stability and performance.

Be a founding engineer at a seed-stage healthcare AI startup building production-grade AI agents to transform clinical trial recruitment and patient support.

Founding Full Stack Engineer needed to build and scale a production assessment platform that modernizes how companies hire technical talent from the company's NYC office.

Lead firmware development for Omi’s AI wearable platform as the founding firmware engineer, owning firmware, hardware bring-up, and product-level technical decisions.

AfterQuery, a San Francisco-based AI startup backed by $3M, seeks a Founding Software Engineer to take end-to-end ownership of full-stack and infrastructure systems that power LLM evaluation.

Early-stage P&C insurance fintech in San Francisco is hiring a founding engineer to design and build a resilient, API-first platform as an early team member.

A fast-moving NYC early-stage startup seeks a founding full-stack engineer to build mobile apps, backend services, and cloud infrastructure while shaping product and technical strategy.

Lead the design and engineering of Shipd's UI and developer tooling to build reusable design systems, scalable quest workflows, and gamification features that drive contributor engagement.

Nash is hiring a founding-level Product Engineer to build and scale core logistics infrastructure while partnering directly with customers to deliver production outcomes.

Work on a mission-driven team at 3Y Health as a Senior Frontend Engineer to deliver polished, scalable React/TypeScript user interfaces that improve care delivery for independent providers.

An early-stage engineering leader role for an Ex-Founder/Founding Engineer to build core logistics infrastructure, ship 0→1 products, and partner closely with customers to drive real-world impact.

Join an early-stage fintech startup as a Founding Fullstack Engineer to build browser-native AI agents and own core product features across frontend, backend, and automation integrations.

Founding Full-Stack Software Engineer needed to design backend systems and agentic AI for a Santa Monica startup building large-scale autonomous cybersecurity agents.

Phaselab is seeking a Founding Backend Engineer who will own and scale backend systems (databases, ingestion, AI) and ship product features rapidly at an early-stage startup.

Help build the core backend infrastructure at DimRed to power large-scale LLM evaluations, agent workflows, and secure multi-tenant production systems.

Founding Software Engineer at Tamarind Bio to build and scale the core infrastructure, web interface, and API products that power AI-driven drug discovery.

Lead the creation and launch of GovWell's first mobile app as the Founding Mobile Engineer, shaping architecture, UX, and production rollout for a fast-growing GovTech startup.

Work as a founding frontend engineer at Sentra to build and ship React/TypeScript UI features that shape the product and user experience for scaling startups.

Sentra is hiring a Founding Backend/Platform Engineer to build scalable backend systems and LLM-integrated platform features at an early-stage, VC-backed startup.

As a founding full-stack engineer at Ventuals, you will shape the user experience, trading APIs, and production infrastructure ahead of our mainnet launch.

Ventuals is hiring a founding full-stack engineer to build the trading UX, backend services, and scale infrastructure for onchain markets that make private companies tradable.

Help build Fram Energy's data platform and quality practices as the Founding Data and Quality Engineer, driving reliable pipelines and observability for a fast-moving climate and proptech startup in NYC.

Founding ML Engineer to design and productionize ML and GenAI systems for a profitable, mission-driven AI firm focused on climate, energy, and real-estate solutions.

An early engineering hire to build and scale Tamarind Bio's DevOps/MLOps platform, web interface, and APIs while working closely with founders and customers in the SF Bay Area.

Socratix AI is seeking a founding software engineer to design and deliver production-grade AI agents and core infrastructure for fraud and risk teams.

August is hiring a Founding AI Engineer to design and deploy production agent systems that automate legal workflows for mid-market law firms.

Experienced full-stack engineer needed to help build and scale an AI-driven procurement platform as a founding member of an early-stage startup (NYC, hybrid).

Lead the creation of Elicit’s data platform as the Founding Data Engineer, building robust pipelines to ingest, deduplicate, and preprocess scholarly and customer data for LLM-driven workflows.

Join a fast-growing healthcare AI startup as a Founding Machine Learning Engineer to productionize models, build scalable EHR pipelines, and develop new clinical AI modules that directly impact patient outcomes.