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39 founding software engineer jobs at 33 companies in Mount Vernon, NY

3mo
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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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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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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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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 Software Engineer
New York City, New York, United States
HybridFull Time
Rollout
Rollout: AI-powered assistants for police officers to automate paperwork.
Fluency with modern AI coding tools, solid CS fundamentals, ability to ship software, fast learner, strong communication, and willingness to work in person with customers.
Claude Code, Cursor, Copilot
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1mo
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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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12h
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Founding Engineer
New York, New York, United States
$156k-$182k/yr OnsiteFull Time
Clera
Clera: AI talent agent matching professionals with high-growth startup roles
2+ YOERequires 2+ years building production systems, production agentic AI or LLM applications, full-stack development, Python, FastAPI, SQL, TypeScript, React, PostgreSQL, AWS, real-time systems, and US citizenship.
Python, FastAPI, ETL, SQL, TypeScript, React, PostgreSQL, AWS, dbt, MotherDuck, Turbopuffer, Cloudflare
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2w
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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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19h
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Founding Software Engineer
New York City, New York, United States
$150k-$250k/yr OnsiteFull Time
Continual Research
Continual Research: AI-powered autonomous agents for investment research and trading strategies.
2+ YOERequires 2–5 years building and shipping at an early-stage tech startup or quant fund, with production systems experience in distributed pipelines, data platforms, low-latency services, or ML infrastructure.
HSA, FSA, 401(k), CI
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2mo
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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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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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1w
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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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1mo
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Founding Engineer
New York City, New York, United States
$175k-$250k/yr OnsiteFull Time
Neptune
Neptune: Legal technology platform streamlining prenuptial and postnuptial agreement services.
3+ YOE3–6 years full-stack experience, AI-native mindset, strong product orientation, ability to own features end-to-end; experience with LLMs and shipping production software.
React, TypeScript, TanStack, Go, LLMs
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1mo
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Founding Engineer
New York, New York, United States
$180k-$210k/yr OnsiteFull Time
Volca
Volca: AI-powered automation platform for home services businesses.
Experienced engineer (front-end biased full-stack or applied AI) with system design ability; comfortable solving ambiguous problems and shipping product in a fast-paced, in-person startup.
Ruby on Rails, React, Postgres, AWS, Redis
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3d
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Co-Founder / Founding Engineer for an agentic M&A service start-up based in SF & NYC
San Francisco or New York City
OnsiteFull Time
STEALTH Angel Collective
STEALTH Angel Collective: Venture studio building AI-enabled healthcare automation platforms.
Early startup engineering experience, strong AI/LLM, backend, automation, cloud, and system design skills, fast product delivery, communication, product intuition, and willingness to relocate to San Francisco.
AI, LLM
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1mo
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Founding Principal Engineer
New York City, New York, United States
$200k-$240k/yr HybridFull Time
Handspring
Handspring: Providing specialized mental health care for children and families.
8+ YOE8+ years building production software with staff/principal level experience; deep full‑stack skills; experience leading distributed teams; building in regulated or data‑sensitive environments; strong communication and technical leadership.
TypeScript, Node, React, AWS, EHR
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1mo
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Founding Backend Engineer
New York City, New York, United States
OnsiteFull Time
Hera
Hera: Medicare-covered platform providing dedicated senior care coordination.
Experienced backend engineer with strong systems design, cloud and database experience, API and SDK development, security/compliance awareness, and ownership in early-stage environments.
AWS, SQL, APIs, SDKs
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1mo
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Founding Design Engineer
New York City, New York, United States
$125k-$185k/yr OnsiteFull Time
Clark
Clark: AI-powered trust infrastructure for audit and accounting firms.
3+ YOE3+ years building modern web applications; strong React, TypeScript, HTML, CSS skills; experience with design and frontend engineering; product sensibility and attention to interaction detail.
React, TypeScript, HTML, CSS, Tailwind CSS, Figma
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3w
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Founding Full Stack Engineer
San Francisco or New York City
HybridFull Time
Remy
Remy: AI ideation agents that help product teams design software.
5+ YOE5+ years software engineering experience, strong TypeScript/Node.js/React skills, experience across backend and frontend, systems and API design, shipping 0→1 products, strong communication.
TypeScript, AWS AppSync, Express, GraphQL, Node.js, React, DynamoDB, OpenAI, Anthropic, Google, Docker, Next.js, websockets
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1mo
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Founding Product Engineer
Berlin or New York City or London
RemoteFull Time
Melotech
Melotech: Generative AI platform for automated music and video production.
3+ YOE3+ years engineering or product experience, built high-engagement B2C products, AI-native, user research and data-driven product decision making, autonomous early-stage founder mindset.
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