Senior Software Engineer

As a Software Engineer, you'll work directly with our Head of Engineering and product team to build the agentic platform that powers how small businesses are bought and sold. Your work will directly impact how thousands of owners navigate one of the biggest financial moments of their lives. This is not a papers-and-prototypes role, it's product engineering with real AI systems.

You'll ship full-stack agentic systems end-to-end, collaborate closely with sales and operations, and turn real business needs into agentic product experiences that users interact with daily. AI isn't a separate track at Baton, it's embedded into how product is conceived, built, shipped, and improved. If you're the kind of engineer who wants to own the full loop - from "what problem matters?" to "it's in prod and we're monitoring it" - you'll be at home here.

- Ship full-stack AI features end to end - from scoping with stakeholders to deploying agentic systems that solve real problems for buyers and sellers

- Own 0-to-1 projects , collaborating with our sales & operations teams to identify high-leverage opportunities and build intelligent capabilities

- Build and improve agentic infrastructure that supports production-level inference, evaluation, and monitoring

- Work across the stack to integrate AI seamlessly into our marketplace, creating clean interfaces that make intelligent features feel native to the product

- Develop tools and systems that scale - from intelligent matching to document understanding and agentic workflows that transform our marketplace

- Shipped and owned production AI systems end-to-end (LLM and/or classic ML) - real users, measurable outcomes, operational responsibility

- Strong software engineering fundamentals with excellent Python skills and experience integrating foundation models in production

- A track record of shipping - you've taken ambiguous problems from concept → production and can point to impact

- Strong product sense - you can be your own product manager when needed, translating business needs into technical solutions without waiting for a spec

- Comfort in ambiguity - you thrive with limited structure and turn uncertainty into clarity

- Experience with modern AI frameworks and building multi-step agentic systems with tool use, planning, and human-in-the-loop patterns

- Experience designing evaluation suites for LLM systems (offline + online), including rubric-based and model-graded evals

- Experience operating LLM systems at scale-latency, cost, caching, fallbacks, rate limits, reliability

- Familiarity with retrieval quality work-chunking, reranking, query rewriting, relevance tuning

- Marketplace, platform, fintech, or small business background with understanding of matching algorithms or business transactions

- Background in NLP, information retrieval, or recommendation systems

- Want to apply AI to real business problems at real stakes and scale-not just build demos

- Love small, high-trust teams with meaningful ownership over agents & capabilities that differentiate the product

- Prefer shipping to production and measuring performance over endless tinkering

- Are passionate about helping small business owners navigate one of the most significant moments in their journey

- Can balance "good enough for now" with maintainable, scalable systems-pragmatic about simple solutions vs complex models

- Embody low ego, high respect-direct, thoughtful communication; strong feedback muscle

If this sounds like you, we'd love to hear from you - send a note with a few bullets on what you've shipped (especially production AI systems you've owned end-to-end), and what you'd be excited to build at Baton.

- Mission-driven work: empowering entrepreneurs and shaping the future of small business transitions.

- A collaborative, data-driven, and growth-oriented culture.

- An opportunity to make a significant impact at an early stage in our journey.

- Four weeks of paid time off, generous sick leave, and six weeks of flexible Work From Anywhere days

- The opportunity to make a meaningful impact on the lives of small business owners and their communities

- We believe that democratizing access to small business ownership with reliable data and tools for buying and selling businesses will reshape the economy.

- At Baton, we're building the AI-native platform that makes small business transitions transparent, fast, and fair as we support the millions of baby boomers who have poured their life into their small business.

- We're already the largest marketplace in the space with nearly 100 closed transactions & thousands of listings in front of tens of thousands of active buyers on the platform.