Software Engineer; Backend — Python​/FastAPI

Position: 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 equity

About 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 Do
* Own 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 Type Script — 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 Have
* Experience 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, Type Script.
* 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 Process
* Intro 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).
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