152 founding software engineer jobs at 104 companies in United States

PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
2mo
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Founding Software Engineer
San Francisco, California, United States
$150k-$250k/yr OnsiteFull Time
Tamarind Bio
Tamarind Bio: AI-powered platform for computational biology and drug discovery.
Founding software engineer with full-stack expertise; strong AWS, Docker, CUDA, TensorFlow/PyTorch; React; onsite in SF; equity.
Python, React, AWS, Docker, CUDA, Conda, TensorFlow, PyTorch, Slurm, Bash, APIs, Web apps
3mo
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Founding Software Engineer
New York, New York, United States
$150k-$200k/yr OnsiteFull Time
Avallon
Avallon: AI agents automating insurance claims operations for carriers.
4+ YOE4+ years building production software; TypeScript and SQL; high ownership; founding role; NYC-based or willing to relocate.
TypeScript, SQL
3mo
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Founding Engineer
Palo Alto, California, United States
OnsiteFull Time
Miravoice
Miravoice: AI-powered voice agents for automated phone data collection.
Generalist founding software engineer with frontend/backend, distributed systems, or AI/ML focus; startup experience; strong learning and collaboration; in-person in Palo Alto.
Frontend, Backend, Distributed Systems, AI/ML, Speech Systems
3mo
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Founding Software Engineer
California or New York or United States
$150k-$185k/yr HybridFull Time
Loula
Loula: Software platform enabling independent doulas to accept health insurance.
4+ YOEFull-stack engineer with 4+ years, startup and healthcare exposure preferred.
React, Typescript, NestJS, Drizzle ORM, Docker, GitHub Actions, Postgres, AWS, Aptible, Retool
3mo
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Founding Engineer
San Francisco, California, United States
OnsiteFull Time
Chasi
Chasi: AI revenue engine for construction equipment dealers.
2+ YOE2+ years production software experience; full-stack TS/React; real-time systems; experience with LLMs; customer-facing; founding-level ownership.
Next.js, TypeScript, PostgreSQL, Redis, Twilio, LiveKit, OpenAI, Anthropic, Deepgram, Vector DBs
2mo
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Founding Engineer
New York City, New York, United States
$130k-$200k/yr OnsiteFull Time
Ficus
Ficus: Fintech startup building payout infrastructure for life insurance.
Founding engineer with full-stack skills; ownership of product and infra; experience with backend systems, APIs, security, and regulated financial workflows.
Backend, Frontend, APIs, Databases, Cloud
1mo
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Founding Software Engineer - Backend
San Francisco, California, United States
$125k-$300k/yr OnsiteFull Time
Hypercubic
Hypercubic: AI platform for modernizing large-scale legacy enterprise software.
0+ YOEFounding backend engineer with strong engineering and design taste; ownership over architecture and engineering culture. Experience with AI-powered systems and legacy modernization is a plus.
2mo
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Founding Software Engineer
San Francisco, California, United States
$160k-$300k/yr OnsiteFull Time
Lance
Lance: Autonomous AI agents for hotel operations and guest services.
Proficient in software development; experience with ML/AI; design scalable systems; strong collaboration; startup mindset; BS or higher in CS/Engineering.
Python, JavaScript, Cloud infrastructure, Deployment pipelines, Machine Learning
2mo
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Founding Engineer
San Francisco, California, United States
$205k-$250k/yr OnsiteFull Time
Kiloforge
Kiloforge: Autonomous factory ideating and building software products.
Generalist engineer with end-to-end product focus, scrappy, able to build widely-used tools, strong product/design sense, thrives in chaos, prior founding experience.
1mo
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Founding Engineer - Software
San Francisco or United States
$200k-$350k/yr RemoteFull Time
uRun
uRun: Infrastructure cloud for interactive, stateful AI inference.
7+ YOE7+ years backend experience; proficient in TypeScript/Node.js or Python/Go; API design, distributed systems; cloud, containers, performance, and concurrency; real-time/latency-sensitive systems.
TypeScript, Node.js, Python, Go, WebRTC, WebSockets, Kubernetes, Observability, Cloud, Containers
3mo
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Founding Senior Software Engineer
Cambridge, Massachusetts, United States
OnsiteFull Time
Farsyt
Farsyt: AI-native independent insurance agency leveraging automation for insurance operations.
5+ YOE5+ years building production systems; strong backend engineering; cloud infrastructure; experience building from scratch; comfortable operating in ambiguity; AI tooling; systems thinking; product intuition.
Python, Django/DRF, FastAPI, React/TypeScript, PostgreSQL, Redis, Celery, AWS, Gemini/OpenAI/Anthropic APIs, Pydantic, LangChain, Docker
1mo
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Founding Engineer
San Francisco, California, United States
$175k-$225k/yr OnsiteFull Time
Clera
Clera: AI talent agent matching professionals with high-growth startup roles
2+ YOEComputer Science degree required, 2+ years professional software engineering experience, strong CS fundamentals, startup experience valued, proficiency in Python (typed scientific Python).
Python
2mo
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Founding Engineer
New York City, New York, United States
$170k-$200k/yr OnsiteFull Time
Alden Labs
Alden Labs: Frontend and backend software building AI-powered care coordination infrastructure.
3+ YOEFull-stack software engineer with 3+ years, skilled in React/NextJS, Express, PostgreSQL; strong ownership; healthcare and AI interest; able to ship features end-to-end.
React, NextJS, Express, PostgreSQL
3w
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Founding Software Engineer
California, United States
$180k-$250k/yr OnsiteFull Time
TAR
TAR: Building modular, off-grid renewable power systems for AI data centers.
3+ YOE3+ years software engineering; strong simulation and physics background; numerical methods and uncertainty quantification; fluency in Python plus C++, Rust, or Go; production software experience with hardware-adjacent systems.
Python, C++, Rust, Go
2mo
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Founding Software Engineer
San Francisco, California, United States
$160k-$220k/yr OnsiteFull Time
Kovari
Kovari: Building general-purpose robots for hospitality and physical industries.
Strong software engineering fundamentals; Python and C++ in Linux; hardware familiarity; ROS; cross-stack collaboration; shipping-oriented.
Python, C++, Linux, ROS
1mo
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Founding Software Engineer, Platform
New York City, New York, United States
$190k-$260k/yr HybridFull Time
GovWell
GovWell: Automates permitting and licensing for local government agencies
5+ YOE5+ years backend/infrastructure/platform experience; strong distributed systems; ownership of CI/CD, observability, incident response; proficient in Node/TypeScript; startup-oriented operator.
AWS, Kubernetes, Datadog, GitHub Actions, React, TypeScript, Node.js, GraphQL, PostgreSQL, RedwoodJS, OpenAI API
1mo
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Founding Software Engineer
Atlanta, Georgia, United States
$95k-$105k/yr OnsiteFull Time
Undaunted
Undaunted: Proactive robotic security systems for real-time threat prevention.
Experienced engineer to build fleet infrastructure, web and embedded software (React, TypeScript, NextJS, Docker, Postgres, Raspberry Pi/Jetson/Arduino/ESP32) with strong systems design and AI interest.
React, TypeScript, NextJS, Render, Docker, Postgres, Supabase, Raspberry Pi, Jetson, Arduino, ESP32, Unitree Go2 Pro, Undaunted dashboard
1mo
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Founding Engineer
New York, New York, United States
$140k-$500k/yr OnsiteFull Time
Rehearsals
Rehearsals: Simulates consumer behavior using AI replicas for business decisions.
3+ YOEBachelor's in CS/Math/Physics or equivalent; 3+ years; proven shipping software; ability to work in NYC in-person.
TypeScript, Next.js, React, CI/CD, data scraping, infrastructure tooling
2mo
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Founding Engineer
New York, New York, United States
HybridFull Time
Jetty
Jetty: AI-powered functional health doctor and coaching platform.
3+ YOE3–8+ years of software product experience; strong backend, end-to-end product shipping; familiarity with APIs, data models, CI/CD, observability; startup mindset; privacy-focused health tech experience bonus.
Go, Rust, Java, Swift, Frontend
3mo
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Founding Engineer
New York, New York, United States
$160k-$200k/yr OnsiteFull Time
Kinetic
Kinetic: Fintech startup providing consumer financial services
Full-stack engineer with product judgment, startup experience, and ability to work autonomously; AI-assisted coding mindset.