Founding Engineer
$170k - $220kDifferential.
Founding Engineer - Early-Stage AI Workflow Startup New York City | Onsite | $170k–$220k + meaningful equity I’m working with an early-stage AI company in New York that is building automation technology for a large, underserved operational market. The business is solving a real-world coordination problem where teams still rely heavily on phone calls, fragmented systems, manual admin and outdated workflows. Their product uses AI agents to automate complex scheduling, communication and verification workflows across multiple systems of record. This is a Founding Engineer role, joining a very small engineering team at a point where there is still significant scope to shape the product, architecture and engineering culture. What you’ll be doing You’ll own ambiguous, high-impact projects end-to-end, including: Building core product infrastructure and integrations with third-party systems Developing AI-powered workflow automation across communication-heavy operational processes Designing systems that handle context, memory, scheduling logic and compliance-sensitive actions Working across full-stack product development, backend systems and LLM-powered workflow The ideal person is a backend-leaning full-stack engineer who enjoys early-stage ownership and can operate without much hand-holding. You’ll likely have: 4–8 years’ full stack software engineering experience Backend experience with Node Strong database experience, ideally PostgreSQL or similar relational systems Experience owning products or systems from 0→1 Prior startup or founding engineer experience would be very relevant, especially if you’ve built products for complex professional or operational users. Why this could be interesting This is not a generic AI wrapper or a narrow feature role. The team is building software that sits inside messy, real-world operational workflows where reliability, context and judgment matter. It’s a strong fit for someone who wants: Early engineering ownership A product with real customer pull A technical problem that spans product, infrastructure, integrations and AI Meaningful equity upside Direct exposure to customers and product direction Package Equity: meaningful early-stage equity Small, founder-led team Visa sponsorship available for relevant candidates Location This is an onsite role in New York City . The team is building in person and looking for someone excited by the pace and ownership of an early‑stage environment. If you’re a product-minded full-stack engineer who enjoys building from zero, solving messy operational problems and working with AI-enabled workflows, this could be a very strong fit. #J-18808-Ljbffr Differential.
- ...Job Description Job Description Our client is looking for a Founding Systems Engineer to help refine the foundations of their platform and build the next generation of agent-first data infrastructure. You will join at a stage where engineers have a large influence...SuggestedRelocationFlexible hours3 days per week
- United States Digital Space LLC is seeking a Founding Engineer in NYC to build AI-for-science tooling. This onsite, full-time role offers autonomy, high ownership, and the chance to influence the stack from agents to runtime. You'll join a small, well-funded team and work...SuggestedFull time
- ...healthcare startup in New York to build end-to-end ML systems for medical coding and revenue cycle workflows. We’re seeking a Founding AI Engineer to own core AI systems from data ingestion to production deployment. This hands-on role offers meaningful equity upside and...SuggestedWork at office
$150k - $250k
Precharm is seeking a founding engineer in New York City to build and improve systems for our trading business. You will have significant ownership over the development of exchange connectors, execution systems, and market data infrastructure. We value candidates with 1...Suggested- Advatix Inc. in New York is seeking a Founding AI Engineer / Member of Technical Staff to design and ship machine learning systems crucial for public safety. This role involves direct collaboration with founders and investigators to transform digital evidence into actionable...Suggested
- ElitePath Talent is seeking a Founding Engineer / Member of Technical Staff to be an AI-native, full-stack builder. You will rapidly prototype, ship, and iterate on products that help teams understand, debug, and fix AI systems in production. Join small, high-impact pods...
- Photonium is looking for a Founding Machine Learning Engineer to join their team in New York City. This full-time on-site position focuses on designing and implementing optical design agents, developing ML models to optimize outcomes. The ideal candidate will have strong...Full time
- ...Frequency Trading business. Joining alongside a newly appointed HFT engineering leader from one of the industry's top electronic trading firms... ...who want to build rather than maintain. This is a true founding role with exceptional technical leadership, significant ownership...
$100k - $140k
...sponsorship dollars, we’re ready for someone to step in and own engineering, product, auditing and building on our foundation to create a... ..., working with LLMs, and building AI-agents. Some combo of: founding engineer at a seed-stage startup, design engineer, technical PM...Temporary workFlexible hoursShift work$180k - $220k
...the company | Founding Engineer | NYC | ONSITE | Full-time | $180k-$220k base + equity We're working in the AI for science space, specifically at the point of experimental execution.Scientific labs run on expensive instruments locked behind proprietary software with no...Full time- ...previously part of building Europe’s fastest growing InsurTech and founded a licensed EU bank processing payments of €1B/yr+. Now we are... ...growing and best-funded startups. About the role As founding engineer you will work alongside a team of experienced 2x-founders and ex...
- ...Sponsorship: Yes (Open to H1B transfers) The Opportunity Our client, a high-growth startup backed by top-tier VCs, is looking for a Founding Engineer to architect the core systems of an AI agent platform designed for the e-commerce and fintech space. This isn't just a coding...H1bVisa sponsorship
- ...clients access and interact with professional services. Following strong early traction, the team is expanding its engineering function and looking for a Founding Engineer to join as one of its first technical hires. This is a genuine 0→1 engineering role with significant...
$150k - $225k
...Neptune Founding Engineer (Full Stack) Neptune is building the concierge couples trust to navigate the biggest decisions of a life together. We pair emotionally intelligent AI with vetted legal and financial experts and transparent pricing, so both partners can make confident...Work at officeShift work- ...founders, we're combining modern AI, automation, and software engineering to solve real-world business problems in a large, global market... ...and enterprise organisations worldwide. The Opportunity As a Founding Engineer, you'll work alongside experienced founders and senior...Worldwide
- ...is building a technology platform designed to solve complex problems across the built environment, and they’re looking for a founding engineer who wants to have a meaningful role in shaping both the product and the engineering organization. This is an opportunity to join...
$200k - $260k
...About Rhythmic Rhythmic is an embedded stablecoin finance company founded by senior fintech operators with experience at Circle,... ...of building that future. The Role Rhythmic is hiring a Founding Engineer to lead the long-term engineering strategy plus day-to-day execution...Contract workFor contractors- ...TL;DR: We\'re looking for founding engineers to help us build human-focused security tech, reinvent skill-based interviewing, and transform how the the $4T+ contingent workforce industry operates About Ropes Ropes is building a new way for companies to hire talent, starting...
- ...Talent, we support global hiring initiatives and connect businesses with top-tier talent across key markets. About the Role: As a Founding Engineer / Member of Technical Staff, you’ll be an AI-native, full-stack builder responsible for rapidly prototyping, shipping, and...Flexible hours
- ...largest life insurance carriers in the United States. We are looking for highly driven, AI-pilled engineers to join us on this mission and be a core part of our founding team. Our Team Daniel Nissenbaum (CEO): Daniel was previously co-founder and CTO of Alinea, a Series...Contract work
$180k - $250k
...-site (5 days/week) · Full-time Compensation: $180K – $250K + founding equity About the Company Our client is a stealth-stage AI startup... ...large, under-digitized consumer-services industry. Founded by engineers who previously helped scale high-growth consumer platforms,...Full timeH1bVisa sponsorship$200k - $250k
...across high-growth startups and organizations like Porter, Ironclad, Affinity, Bain, Amazon, and Uber. Role Robby is hiring a Founding Engineer to help us improve and deploy our core product for large home services companies. Our first product is live with some of the largest...For contractorsWork at officeFlexible hours$100k - $300k
...Founding Engineer Cross-chain FX and settlements infrastructure US (New York Preferred) $100k - $300k Plexus is working with a new client in the Web3 infrastructure space. They are building cross-chain foreign exchange and settlement technology, enabling seamless value...Contract work- ...Founding Engineer @ Volca Wanted: Top Tier Engineer Looking to Work on Applied AI in a Small, High Autonomy Team What we do: The Industry: Home services are a funny space. On average, when we hop on a call whether sales or CS we're talking to some guy from rural Ohio named...Live inWork at officeFlexible hours
- ...and service for our B2B partners allows them to serve more homebuyers, with the products they need, at market leading rates. Founding Engineer The Founding Engineer will operate as technical leader focused on execution, velocity, and practical problem-solving in an early...Self employmentRemote work
$180k - $220k
...their skills. Where we are We run extremely lean: a 2-person engineering team serving 100k+ students across 200+ institutions, on multiple... ...here is a force multiplier. About The Role We're hiring a Founding Engineer to join us as the third member of the engineering team...Flexible hoursShift work- ...Founding Member of Technical Staff | AI x Critical Infrastructure | NYC I’m working with an extremely ambitious, well-funded AI startup... ...been touched by modern technology — working directly with the engineers responsible for water systems, power utilities, transportation...Immediate start
$170k - $200k
...Founding Engineer @ Alden Labs About Alden Alden is re-architecting how America delivers care. Caregiving is the largest job in the U.S., yet the system still runs on sticky notes, spreadsheets, and late-night calls. Families wait weeks for help. Patients miss visits....Full timeFlexible hoursNight shift- ...intelligence platform designed for data-intensive organizations. Backed by strong early customer traction, the team is seeking a Founding Engineer to help scale its core product and shape the future of the platform. You will have significant ownership across product...
$100k - $180k
...ecosystem. We're backed by the world9s leading investors including Y Combinator, 10X Founders, Zillionize, Amino Capital, etc. As a Founding Engineer , you9ll help architect, build, and scale the core systems that power global payroll and money movement. You9ll work directly...
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