Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Founding Engineer

Ersilia

We're an AI-native lender and our team spent the first eight months of the business building completely novel in- house software: loan management systems, payment rails infrastructure, and technology for analyzing business bank transactions and financials. That foundation enabled us to raise over $100 million in funding for CPG brands within its first year. We're now building the product that all of that infrastructure was designed to power: an AI CFO agent. About the Role We're hiring a Founding Engineer to work primarily on the new AI CFO agent. This role is tech-lead-level autonomy from day one. You will own and deliver on the agent's tool surface and trajectory quality, ramp up quickly without spoon-feeding, and operate as a self-sufficient builder. The time split is approximately 75% for new AI agent work and 25% for the existing lending infrastructure. The role is primarily backend Python, with exposure to TypeScript frontend development. No customer-facing work or formal product ownership is expected. You will be in the trenches building, but you will be socialized and excited about the product, not just talking to a database in a corner. What You'll Own Build and extend the AI CFO agent's tool surface so it can complete tasks that currently take a CFO or CEO an hour or more Improve agent trajectory quality, breadth, and depth of tools so the agent reliably ships magical, end-to-end outcomes Compose existing scoped tools and build new ones (email composition, document filling, payload generation, account integrations) Contribute to the underlying infrastructure that both the lending business and the AI agent business sit on top of Operate as a tech lead from day one: ramp fast, own delivery, work in a Slack-native, AI-tool-heavy development cycle Must-Haves New grad to 5 years of engineering experience (hard cap at 5 years) Excellence signal: notable startup background, big tech background, or top university CS / technical degree Strong Python backend fundamentals: APIs, async, databases, cloud deployment AI-native daily usage of Claude Code, Codex, or comparable agentic coding tools, with strong opinions on how to make agent systems better Self-motivated tech lead profile: ramps fast, works with minimal scaffolding, comfortable owning ambiguous scope Nice-to-Have Full-stack experience with TypeScript on the frontend Prior zero-to-one startup experience with a clear story and demonstrable users High-frequency trading or quantitative engineering background (matches current team profile) Excited about UX and product, not just systems NB: No Visa sponsorship #J-18808-Ljbffr

Vacancy posted 3 days ago
Similar jobs that could be interesting for youBased on the Founding Engineer in New York, NY vacancy
  • Garage, based in New York, is building a founding technical recruiting function to fuel its engineering, product, and design teams as we scale a mission-critical marketplace. You will own searches end to end, build targeted pipelines, and partner with the CTO/Co-founder... 
    Suggested

    Garage

    New York, NY
    2 days ago
  • Oodle is seeking a Founding Engineer to join on the ground floor to disrupt large markets with a scalable database/observability product. You will wear multiple hats, prototype rapidly, talk to customers, and shape the core stack. You have 5-8+ years of distributed systems... 
    Suggested

    Praxis, Inc.

    New York, NY
    3 days ago
  •  ...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... 
    Suggested
    Work at office

    Recruiting from Scratch

    New York, NY
    5 days ago
  • 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

    Advatix

    New York, NY
    4 days ago
  • $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

    Precharm

    New York, NY
    4 days ago
  •  ...an a16z-backed startup, is building AI agents to automate the $3 trillion American manufacturing back office. We are hiring a Founding Engineer in New York City to build the digital backbone, ship core AI features, and integrate with legacy ERP systems from 0 to 1. You'... 

    Jack & Jill

    New York, NY
    3 days ago
  • 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

    Photonium

    New York, NY
    1 day ago
  • $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 office
    Shift work

    Neptune

    New York, NY
    3 days ago
  • $180k - $220k

     ...General Context | Founding Engineer | NYC (On-Site) | $180-220K + Equity | Role As a Founding Engineer, you'll help build our agentic marketing/creative platform and the core infrastructure that powers it. This is a ground‑floor opportunity to architect and ship the foundational... 

    General Context

    New York, NY
    1 day ago
  •  ..., and a strong focus on building tools that meaningfully improve how hiring gets done. The Opportunity We're hiring our first Founding Engineer to help define TalentPluto's technical direction and own major parts of the product and stack. This role is ideal for someone... 
    For contractors

    talentpluto

    New York, NY
    1 day ago
  •  ...underneath the models, making new LLM releases more valuable, not redundant. The engineering team is currently 4 people and is expected to triple in size in the next two months. The company was founded by former engineers from Palantir, Meta, and Amazon. It has raised $6... 

    Ovise

    New York, NY
    5 days ago
  •  ...TL;DR Early engineering hire at a well-funded seed-stage startup taking on the proxy advisory duopoly with AI. Hybrid NYC, work directly...  ...approach to corporate governance We’ve raised a sizable seed, the founding team blends deep capital markets experience with technical... 
    Work at office

    Proxify

    New York, NY
    2 days ago
  • $150k - $250k

     ...Founding Engineer: Build AI Agents Transforming a $2T+ Industry Are you the sort of engineer who wants to build a company from the ground up? Do you want to join a tiny team where you work directly with the founders, ship across the entire stack, and have genuine ownership... 
    Work at office

    Venture Up Inc

    New York, NY
    3 days ago
  •  ...Founding Engineer River · Full-time · New York, USA · 5+ years About River River builds AI voice agents for B2B SaaS sales teams. Our agent talks with prospects in real time: it qualifies them, answers the hard questions, demos the product by actually using it in a browser... 
    Full time
    Live in

    River

    New York, NY
    1 day ago
  •  ...What you'll do As an early engineer, you will be tasked with owning the technical development of the Swig stack. You'll have end-to-end...  ...wrong and truth-seek from first principles until a root cause is found. You believe that listening is sometimes better than speaking.... 
    Relocation package

    SWIG

    New York, NY
    2 days ago
  • $125k - $200k

     ...meaningful projects in our product pipeline, and we need to grow the engineering team to build out the vision. From day 1 you’ll hit the ground...  ...with some of the most exciting work of your career. As a Founding AI Engineer, you’ll be working on new applications of AI that... 
    Full time

    Constant (YC W23)

    New York, NY
    2 days ago
  • $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 work
    Flexible hours
    Shift work

    Offline Inc

    New York, NY
    4 days ago
  •  ...candidate profiles across active roles and use resumes/profiles to understand which backgrounds may be a fit. THE ROLE As a Founding GTM Engineer, you may work on projects that require strong execution, communication, analytical judgment, and the ability to move quickly... 

    Career-Launch.net

    New York, NY
    2 days ago
  •  ...Meta, Shopify, and startups. Now we’re backed by the investors behind OpenAI, Cursor, and SKIMS. The Role We’re looking for a founding engineer who can move fast across the stack and go deep when the problem demands it. Early on, the work will be varied: one week you might... 
    Work at office

    doji s.a.

    New York, NY
    3 days ago
  •  ...of dollars in volume with consistent profitability. We’re based in NYC, founded in 2025, and still small enough that every hire materially shapes the firm. The role We’re hiring a founding engineer to build the systems the trading business runs on — exchange connectors,... 

    Precharm, LLC

    New York, NY
    1 day ago
  •  ...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... 

    Solva Technology

    New York, NY
    1 day ago
  • $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 time
    Flexible hours
    Night shift

    Alden Labs

    New York, NY
    5 days ago
  •  ...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

    Alexander Chapman

    New York, NY
    1 day ago
  •  ...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... 

    Tenth Revolution Group

    New York, NY
    1 day ago
  •  ...You build the systems that run Hearth's go-to-market: the whole engine, one motion at a time. You're a business builder, not an...  ...define what a true AI-native go-to-market looks like. This is the founding seat on the function, with a leader's runway. Prove the model on... 
    For contractors
    Live in
    Local area

    Hearth

    New York, NY
    5 days ago
  •  ...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

    iFindTech Ltd

    New York, NY
    3 days ago
  • $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 work
    For contractors

    Rhythmic

    New York, NY
    2 days ago
  •  ...We are hiring a founding engineer . This is not a normal engineering job. You will help decide what the company becomes, because the first technical decisions shape everything that follows. If you do this well, years from now large parts of the system will still look the... 

    SwiftCruit

    New York, NY
    4 days ago
  • $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... 

    Thera (YC S22)

    New York, NY
    2 days ago
  •  ...trade on translated and delivered in real time by our AI research engine. From there the map expands, market by market, until global...  ...path to our own FINRA-licensed broker-dealer, and building the founding engineering team now. Why this role exists Ceno's brokerage is... 
    Local area
    Overseas

    Ceno

    New York, NY
    5 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Founding Engineer. Be the first to apply!