2,917 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Senior Software Engineer (Remote)
Senior Software Engineer focused on enhancing the Apache Druid query engine and storage system for high-performance observability data processing, including SQL planning, query optimization, and distributed execution.
Staff Software Engineer (Remote)
Staff Software Engineer at Imply builds and maintains backend services and Apache Druid features for Imply Lumi, a high-performance observability warehouse. Focuses on Java-based microservices, database engineering, and cross-team collaboration to deliver scalable, cost-efficient data solutions for observability and security data.
Founding Engineer, Infrastructure
Founding infrastructure engineer at a Greylock-incubated, early-stage AI security startup in San Francisco (on-site 5 days/week). Builds protocol-aware proxies and gateways (e.g., Envoy), low-latency inline policy enforcement, and distributed data pipelines using Rust, Go, and Python to monitor and secure enterprise AI agents.
Software Engineer, AI
Owns the AI behind Ande's booking agent — a concierge with subagents that sources venues, negotiates over email, and completes paid, on-policy bookings for enterprises. Day to day you design agent architecture, typed tools, memory, and production evals, working in TypeScript from the NYC office (4 days/week in office).
Founding Engineer, Agents
Founding engineer at an early-stage AI startup (Clera) building autonomous agents that do complex computer-based work over weeks with minimal human oversight. Day to day: design agent memory and reliability systems, long-running execution, and evaluation frameworks benchmarking agents against humans. On-site in San Francisco.
Founding Engineer, Environments + Data
Founding engineer at Clera who builds synthetic company environments (simulated inboxes, CRMs, files) plus graders and benchmarks to assess whether AI agents can perform real company work, including detecting reward hacking. On-site, five days a week in San Francisco.
Founding Engineer, NLP Systems & Infrastructure
First technical hire at an early-stage dual-use AI startup in Munich: own the production architecture for NLP/data pipelines, AI/ML integrations, CI/CD, observability and cloud/on-prem deployments, then hire and lead the engineering team. Core stack: Python, PostgreSQL, vector/graph search, LLMs, Docker/K8s, React/Vue.
Founding Engineer
Founding engineer at Clera, an early-stage startup building AI-powered research tools for professional investors (initially healthcare-focused). You'd ship full-stack features, build data pipelines and internal tooling, and improve AI agent parsing/extraction systems end to end. On-site in New York City; $156k-$182k.
Founding Engineer
Founding engineer at Clera, a small team building multimodal AI agents for customer communication across voice, SMS, and email. You'll own a product domain end to end, talk with customers, and ship with TypeScript/Node.js, React/Next.js, and Python. On-site in New York.
Senior Software Engineer, Infrastructure
Senior infrastructure engineer at Clera (Singapore, on-site) owning reliability, scale, performance, and developer experience for AI training and evaluation platform infrastructure. Day-to-day is building and operating AWS infrastructure with Terraform, Kubernetes/EKS, Helm, and Docker, plus CI/CD, observability, and backend services.
Senior Software Engineer
Senior full-stack engineer building server-side apps and APIs with PHP 8/Laravel, Golang, and MySQL, plus front-end features in React.js, on AWS. Works across CI/CD, automated testing, security, and integrations, mentoring juniors on a small, ambitious startup team.
Senior Software Engineer
About Farsight AI Farsight is the agentic AI platform for financial services, currently helping investment banks and private equity firms fully automate entire, highly nuanced workflows. Today, institutions will spend…
Staff Software Engineer
Staff engineer at Foundation Health, an AI operating system for pharmacy, owning the technical direction of core products — prior auth pipelines, Epic integrations, and AI agents handling patient calls and texts. Hands-on, greenfield, AI-native work in a hybrid role (3 days/week in downtown Orlando).
Software Engineer
Software engineer at Cauli, a climate-tech startup tackling packaging waste with IoT and AI. A broad hands-on role spanning a Kotlin Multiplatform mobile app, PHP/Laravel backend, web app with Apple/Google Wallet integrations, and Python on Linux smart-bin hardware. Hybrid in London Zone 1; £40-45k plus equity.
Software Engineer
Python engineer (hired via Technify Talent) for an award-winning UK fintech scale-up: mostly backend feature work in Python/Django with some TypeScript front-end, shipping quickly in a small, fully remote team. Must be UK based with full right to work.
Software Engineer
Full-stack engineer at PolicyMe, a Toronto-based digital insurance startup, building an AI-powered product line for insurance brokers. Day to day: developing features across Python, React, Redux, PostgreSQL, and AWS while integrating AI/ML models, data pipelines, and cloud architecture into production.
Senior Software Engineer
Senior full-stack product engineer at Bizzy, a Belgian startup building an AI-first sales workspace, based in Ghent (2 days WFH). Owns features end-to-end from discovery to launch across TypeScript, React, Node, GraphQL and Elastic, with AI baked into the core product.
Software Engineer
Founding engineer (on-site 5 days/week in NYC) at a stealth, seed-stage fintech building institutional-grade prediction-markets infrastructure. You'd build the data layer from scratch — cross-venue data normalization, APIs, and cloud infrastructure — in Python and TypeScript on AWS, working directly with the founders.
エンジニアリングマネージャー候補（プレイングマネージャー）
Playing-manager Engineering Manager (path to VPoE) at a University of Tokyo spin-out startup building an AI estimation platform ('Takumi Force') for Japanese manufacturing. Manages a team (1on1s, reviews, hiring, scrum, AI-assisted dev flow) while also coding; stack is TypeScript/React/Node, Python/PyTorch, AWS, GraphQL, plus Devin/Claude Code.
テックリード（候補）
Tech lead for 'Takumi Force', a Vertical AI SaaS by a Tokyo startup that automates manufacturing quotations with AI agents. Reporting to the CTO, you own architecture, quality standards, and AI design while still hands-on coding with TypeScript (React/Node.js), Python, AWS, and LLM/agent tooling.