Senior/Staff Software Engineer

Senior/Staff Software Engineer

Location: New York City, NY (SoHo)

Company Stage of Funding: Series B / High-Growth AI Fintech

Office Type: On-site (5 days/week in NYC)

Salary: $175,000 – $250,000 Base

Equity: Competitive

Bonus: Competitive total compensation package

Visa: Open to most visa sponsorships (except new H1B cases with significant sponsorship costs)

Company Description

Our client is building the leading AI-native revenue platform for modern finance and accounting teams. The platform automates the entire contract-to-cash lifecycle including billing, collections, revenue recognition, reporting, and compliance. Founded in 2023 and already scaled to approximately 150 employees. Raised over $92M from Lightspeed Venture Partners, General Catalyst, and Primary Ventures, including a $55M Series B. Strong product-market fit with substantial overperformance against revenue targets. Customers include Cursor, Statsig, and other fast-growing technology companies. AI is deeply embedded into the product rather than existing as a standalone feature. Engineering challenges involve financial infrastructure, ERP integrations, commercial graph construction, billing systems, reconciliation engines, and AI-driven automation. Company is in the critical 1-to-10 scaling phase where architecture and engineering decisions will shape the future of the business. Leadership expects senior engineers to challenge assumptions, influence direction, and contribute to engineering culture.

What You Will Do

Own complex technical projects from architecture through implementation and production deployment

Design highly reliable, scalable, secure, and performant systems

Build AI-driven financial workflows and automation platforms

Partner closely with Engineering, Product, and Executive leadership

Contribute technical direction across multiple engineering domains

Build systems supporting billing, payments, ERP integrations, revenue operations, commercial graph infrastructure, AI/ML workflows, frontend platforms, and core infrastructure

Drive technical discussions and challenge architectural decisions when appropriate

Help define engineering standards and best practices

Mentor engineers and elevate overall team performance

Collaborate cross-functionally with Product, Design, Finance, and GTM teams

Build production-grade systems operating at significant scale and complexity

Shape engineering culture during a critical scaling phase

Lead through technical excellence rather than direct people management

Spend the majority of time writing code and solving technical problems

Help establish long-term technical foundations for future company growth

Ideal Candidate Background

7–15 years of software engineering experience

Experience building complex products at high-growth B2B SaaS, AI, or fintech companies

Experience working at Series A–C startups or renowned engineering organizations

Strong individual contributor background at Senior or Staff level

Experience influencing architecture, product direction, and technical strategy

Strong TypeScript and Python engineering skills

Experience with AWS and modern cloud-native systems

Familiarity with NestJS, Next.js, distributed systems, and backend infrastructure

Strong computer science fundamentals including algorithms, distributed systems, and system design

Experience working in highly collaborative cross-functional environments

Demonstrated ability to mentor engineers while remaining hands-on technically

Ability to challenge decisions constructively and defend technical opinions

Strong engineering judgment and architectural thinking

Experience operating during high-growth scaling phases

Compensation and Benefits

Base salary: $175,000 – $250,000+

Flexibility up to ~$275,000 for exceptional candidates

Competitive equity package

Backed by top-tier investors with strong financial position

Opportunity to shape engineering culture during a major scaling phase

High ownership and visibility across the organization

Work directly with experienced engineering and product leadership

Exposure to challenging AI, fintech, and financial infrastructure problems

Significant influence on company architecture and technical direction

Fast-moving startup environment with strong product-market fit

Why Join

This is an opportunity to join one of the fastest-growing AI-native fintech companies in the market. The company has already achieved meaningful scale while still maintaining startup velocity and ownership. Engineers are expected to influence architecture, challenge leadership, and help shape company direction. The technical problems involve financial infrastructure, AI workflows, distributed systems, and large-scale integrations. The company is entering a critical scaling phase where strong engineers can leave a lasting impact. If you enjoy difficult technical problems, fintech infrastructure, AI-powered products, and high-autonomy engineering environments, this role offers exceptional scope and career upside.