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80 founding engineer jobs at 66 companies in Greenburgh, NY

2w
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Founding Engineer
New York City, New York, United States
$125k-$225k/yr OnsiteFull Time
Clusia: AI-native software platform automating corporate regulatory compliance workflows.
Hands-on experience with LLMs and production AI, full-stack product engineering, cloud infrastructure, deployment and observability, and strong product-minded execution.
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4d
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Founding Engineer (Potential CTO)
New York City or San Francisco or Montreal
$170k/yr OnsiteFull Time
Clera
Clera: AI talent agent matching professionals with high-growth startup roles
3+ YOE3+ years mobile/full-stack engineering, React Native, Node.js or Python, PostgreSQL, experience with frontier LLMs (Claude) in production, wearable/HealthKit experience, ability to work in-person in NY/SF/Montreal.
React Native, Claude, Node.js, Python, PostgreSQL, Vercel, Fly, Render, HealthKit, Apple Watch, Oura, Whoop, EEG
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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
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1w
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Founding Engineer, Open Source
New York, New York, United States
$225k-$300k/yr OnsiteFull Time
Datalab
Datalab: Develops high-precision AI document intelligence models and software tools.
5+ YOE5+ years building production software, strong open-source contributions, fluent in Python, experience creating technical content and engaging developer communities.
Python, GitHub, Discord, X, Reddit, marker, surya, chandra, lift, SDK, API, YouTube, Twitch, OCR
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1mo
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Senior / Staff Founding Engineer
New York City, New York, United States
$250k-$320k/yr OnsiteFull Time
Rovi Health
Rovi Health: AI-powered care concierge and virtual clinic for employers.
8+ YOE8+ years building software with deep experience in Python, React, and TypeScript; ownership of products end-to-end; production AI/ML and LLM/agent experience; systems and scale experience; healthcare/fintech a plus.
Python, React, TypeScript, LLM
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3w
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Founding GTM Engineer
New York, New York, United States
HybridFull Time
Hearth
Hearth: Financial software platform for home improvement contractors
Proven track record moving revenue metrics, building GTM systems, shipping production integrations; familiarity with Salesforce/HubSpot, Redshift, Python, SQL and AI-driven workflows.
Salesforce, HubSpot, Redshift, Clay, Python, SQL, Claude
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3mo
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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
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3w
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Founding Engineer
New York City, New York, United States
$150k-$180k/yr OnsiteFull Time
Company Ventures
Company Ventures: Early-stage venture firm providing capital, residency, and incubator support.
Proven experience building systems from scratch, owning architecture and data pipelines, strong technical judgment, high ownership, comfort with ambiguity, and interest in healthcare and AI-driven products.
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2mo
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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
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3w
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Founding Engineer
New York City, New York, United States
$150k-$180k/yr HybridFull Time
Terrarium
Terrarium: Builds a unified system of record for aging to help seniors live longer, healthier, and happier lives.
Proven experience building production systems from scratch, owning architecture, data ingestion and storage, AI/agentic systems, and compliance; high ownership, strong technical judgment, and comfort with ambiguity.
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6d
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Founding Engineer - AI-Native Investment Bank
New York, New York, United States
€80k-€100k/yr HybridFull Time
MaTrx
MaTrx: AI-native investment bank for lower middle market businesses.
Built and shipped fintech or B2B SaaS products; comfortable with LLMs and agentic workflows; portfolio/GitHub of side projects; startup experience preferred; strong communication; willing to relocate to NY or SF.
Python, Node, React, Next.js, PostgreSQL, langchain, Claude, LLMs, GitHub
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3mo
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Founding AI Engineer
New York City or United States
$160k-$220k/yr OnsiteFull Time
Nolla Health
Nolla Health: Building AI-powered personal health diagnostic and management platforms.
4+ YOE4+ years backend, platform, or product engineering; ships own projects; strong TS and Python; AI tooling experience; small team experience; ability to scope and ship.
TypeScript, Python, Node.js, PostgreSQL, AWS, OpenAI API, Anthropic API, EMR systems, Eval frameworks
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3mo
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Founding Sales Engineer
Boston or London or New York City
HybridFull Time
Clarasight
Clarasight: AI-powered operating system for corporate travel and expense management.
Hands-on technical seller leading enterprise deals; prototypes integrations; helps shape scalable presales.
Python, JavaScript, Demos, Prototyping
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2mo
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Founding Engineer
New York City, New York, United States
$150k-$250k/yr OnsiteFull Time
Pascal
Pascal: AI-native operating system for the CPG offline economy.
3+ YOE3+ years engineering experience, cross-stack technical design, production debugging, customer-driven problem solving, familiarity with large-scale data and agentic workflows.
GCP, Terraform
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1mo
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Founding Engineer
New York City, New York, United States
$150k-$250k/yr OnsiteFull Time
Pascal
Pascal: Provides AI-native operational systems for consumer packaged goods companies.
3+ YOE3+ years engineering experience across server- and client-side languages; cross-stack design, production debugging, customer technical engagement, and delivering infrastructure and agent-based solutions.
GCP, Terraform
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3w
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Founding GenAI Engineer
New York City, New York, United States
$150k-$220k/yr OnsiteFull Time
Arbor
Arbor: Transforms in-person business conversations into executive strategic intelligence.
Experienced engineer with strong fundamentals, hands-on LLM work, production systems experience, proficiency in Python and TypeScript, and end-to-end product ownership.
LiveKit, Pipecat, Twilio, Deepgram, ElevenLabs, OpenAI, Anthropic, Google Gemini, Python, FastAPI, TypeScript, React, WebRTC, STT, TTS
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2mo
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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
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4d
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Founding Data Engineer
New York, New York, United States
$170k-$216k/yr OnsiteFull Time
Holly
Holly: An HR platform that helps local governments modernize hiring and workforce management.
Senior data engineer with production data platform experience: large-scale ingestion, ETL/ELT, data modeling, SQL/Postgres, data quality, observability, and ownership of pipelines and schemas.
SQL, Postgres, TypeScript, Node, ClickHouse, BigQuery, Snowflake, OCR
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1mo
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Founding Design Engineer
New York City, New York, United States
OnsiteFull Time
Garage
Garage: Marketplace for buying and selling specialized emergency vehicles and equipment.
Strong production experience with React, Next.js, Tailwind CSS, and TypeScript; exceptional CSS skills; portfolio demonstrating high-craft frontend or design engineering work; customer-facing collaboration skills.
React, Next.js, TypeScript, Tailwind CSS
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14h
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Founding Research Engineer
New York City or San Francisco
$215k-$330k/yr OnsiteFull Time
Ambral
Ambral: AI-powered account managers for enterprise customer success teams.
4+ YOE4+ years building production software or ML systems, including 2+ years with RL environments or evaluation/agent infrastructure; strong software engineering, data processing, reproducibility, and evaluation skills.
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