Software Engineer (Backend — Python/FastAPI)

Job Title: Software Engineer (Backend — Python/FastAPI)Company: Confidential Startup Location: Boston, MA (Hybrid — 2 days/week in-office) Employment Type: Full-time Experience Level: Mid-level (3-4 years) Education Level: Bachelor’s Salary: $150,000–$250,000/year + meaningful equityAbout the Company Our client is a fast-growing AI platform for finance teams. It turns messy revenue and customer data into a single source of truth, then adds AI agents that answer finance questions and give strategic recommendations in real time.Recognized by a top industry analyst firm as a leading vendor in AI for finance.Revenue doubling quarter over quarter, on a clear path to profitability within 2 years.~35 people, $11M in funding, leadership with deep product and finance experience — including a founding CTO from one of the most successful product-led SaaS companies.AI-first engineering culture: AI coding tools (like Claude Code) are woven through the whole dev workflow.About the Role This is a hybrid backend engineer role where you own and ship net-new product features on an AI-powered financial data platform. You’ll join a small, fast-moving team and report directly to the Head of Engineering. High autonomy — systems thinking and product mindset matter more than pedigree.What You’ll DoOwn end-to-end delivery of new features — from customer needs to design, implementation, and production deployment.Architect and build scalable backend services and APIs with Python, FastAPI, and distributed systems patterns.Work directly with customers and finance teams to turn business needs into technical solutions and smart trade-offs.Use AI coding tools to ship faster.Improve developer experience, observability, and reliability as the team scales.Requirements These are hard requirements. Please check each one that applies to you.2+ years (ideally 3+) as a backend-leaning software engineer.I’ve built and shipped product features for customers in production.Proficient in Python or TypeScript — ideally production Python + FastAPI.Experience with distributed systems.Product mindset + end-to-end ownership from customer need to production.Comfortable in an early-stage, fast-moving environment with high autonomy.Open to hybrid — 2 days/week in-office in the Greater Boston area (or willing to relocate).No H-1B sponsorship available (visa transfers or O-1/TN are OK).Nice to HaveExperience at a product-led SaaS company or early-stage startup.Real AI tooling adoption in your daily workflow (Claude Code, Cursor, or similar).Experience with DuckDB, dbt, TypeScript.Fintech, financial data, or general ledger (GL) experience.Already based in the Boston area.Compensation & Logistics$150k–$250k + meaningful equity.Company on a clear path to profitability.Hybrid — 2 days/week in-office, Greater Boston area (MA).No H-1B sponsorship. Visa transfers and non-H1B sponsorship (e.g., O-1, TN) are OK.Reports to Head of Engineering.Interview ProcessIntro screen with the Head of Technology (30 min).Take-home technical assessment.Technical interview with the CTO & an engineer (60–90 min).Final interview with the CEO (30 min).