Software Engineer (Backend, AI Infra, Member of Technical Staff)

Member of Technical Staff / Backend Software Engineer (Backend AI / ML Systems) 📍 Location: San Francisco (Union Square) – Onsite 🚀 Stage: Series B Funded + Profitable 💰 Base Salary is $300k – $400k 📈 Equity/Stocks - $400k p/a 🛂 Visa sponsorship available 💰 Sign-on Bonus after working there 6 months (of up to $200k) Total 1st Year Compensation - $1mil Why this opportunity stands out Work on core AI systems powering the future of tax and accounting automationJoin a high-calibre founding team with multiple successful exits and FAANG experienceEarly engineering team (~30 people) with real ownership and architectural influenceBacked by a very well known post-IPO Unicorn, combining startup speed with global scale Tech stack PythonML InfraMachine Learning / LLM systemsDistributed SystemsModern backend infrastructure and APIsDjango What you’ll be working on Building core backend systems that deploy machine learning models in productionDesigning the architecture behind LLM interactions, inference systems, and ML pipelinesExtracting structured data from complex tax and financial documentsDeveloping backend services and database layers supporting AI-powered applicationsIntegrating external vendor APIs and data systemsCollaborating closely with accountants and domain experts to shape product direction Why engineers tend to like this team Very high talent density across the founding teamEngineers have direct influence on architecture and product directionOpportunity to work on real-world AI systems used by professional services firmsStartup ownership with the backing and distribution of a well known & respected Unicorn You’d likely be a good fit if you Have 5+ years of backend software engineering experienceHave strong experience building production systems in PythonEnjoy working on ML infrastructure, data systems, or AI-powered productsAre comfortable making thoughtful architectural decisions in fast-moving environmentsLike building products that solve complex real-world problems About the company They build AI-powered software that automates how tax and accounting firms process complex financial documents.The platform uses machine learning and generative AI to extract, structure, and validate data from tax forms with extremely high accuracy — reducing manual work and enabling professionals to focus on higher-value advisory work.The company was founded in 2022 and recently acquired by a Unicorn, combining startup agility with the reach and trust of a global technology leader. If you're a Backend Engineer / Software Engineer / Member of Technical Staff who enjoys building production AI systems with real impact, I’d be happy to share more details. Keywords: Python, Backend Engineering, Machine Learning Infrastructure, LLM Systems, APIs, Data Systems, AI Platforms