Founding Ai Engineer Jobs

Phaselab is hiring a Founding Backend Engineer to design and ship scalable backend systems, data pipelines, and AI integrations for a fast-moving Seed-stage eDiscovery startup.

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

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.

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).

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.

Lead architecture and implementation of the agent orchestration and backend infrastructure powering Keru.ai's autonomous research platform for financial institutions.

Help build and scale production-grade, AI-native frontend workflows at August—designing intuitive React/TypeScript UIs that enable agentic LLMs to perform expert-level legal tasks.

Become a core engineer at Dialogue AI to build full-stack systems and AI integrations that accelerate customer research and define the product from day one.

Crosby seeks a Founding Frontend Engineer to build and shape the user-facing product for an AI-powered legal platform at its NYC office.

Casium is hiring a founding full-stack engineer to design and build core backend systems and AI-powered workflows that modernize business immigration.

Blueberry is looking for a product-minded full-stack engineer to ship delightful, scalable customer-facing features that help the world’s largest brands engage followers at scale.

Create a tailored, high-impact founding role at Blueberry where you’ll help define product, growth, or research for a startup rebuilding brand-to-customer intimacy at scale.

Blueberry is looking for a Founding Engineer to shape the technical foundation and ship AI-powered, scalable product features that let the world’s largest DTC brands engage followers personally.

Cluely, an a16z‑backed AI startup with strong consumer and enterprise traction, seeks a Founding Mobile Engineer to take its mobile app from 0→1 and own the product end-to-end.

Join Capy as the founding design engineer to lead product UX and brand, prototyping in code and shaping the user-facing experience of a fast-growing AI platform.

Help shape Capy's cloud-native AI Software Engineer as a founding engineer focused on backend infrastructure, full-stack delivery, and rapid product iteration.

Build and productionize AI-driven applications at TrueMeter that parse complex utility data, automate agent workflows, and optimize energy spend using LLMs and modern cloud infrastructure.

Build Iron Book as a founding software engineer at Identity Machines to secure enterprise AI with zero-trust access controls and compliance-grade auditability.

Kastle is seeking a Founding Engineer to design and scale backend and LLM-driven systems powering an AI OS for consumer lending with emphasis on low-latency, high-availability production deployments.

Lead Keycard’s GTM engineering as the first hire to design product-driven, developer-focused adoption systems and scale agent-native workflows.

Founding Engineer at Root Access to build production-grade transformer and agentic AI systems that power applied, self-learning products.

ResiQuant is hiring a backend-focused Full Stack Engineer to build and operate scalable AI-powered services that provide enterprise property risk intelligence.