Senior Full-Stack

Crossing Hurdles is partnering with a fast-growing AI-powered compliance & payroll automation platform used by rapidly scaling businesses across the US. The product automates payroll, tax registrations, filings, and multi-state compliance using intelligent agents ,enabling teams to handle complex back-office workflows instantly and accurately. Operating in a high-scale fintech environment, the company is doubling its engineering team to support 10x product growth.

Role:
Senior Full-Stack / Backend Engineer

Compensation:
$140k–$230k base + equity

Location:
On-site, New York (Flatiron)

Tech Stack:
TypeScript, , , AWS, Vercel, PostgreSQL, serverless systems, distributed APIs

YOE:
1–6 years building backend-heavy, high-throughput transactional products (fintech/payments preferred)

About the role

• Build highly reliable systems that process
  billions of dollars
  , supporting payroll, compliance, and money-movement workflows.
• Design, scale, and harden backend services and APIs across TypeScript/Node, AWS, and serverless environments.
• Architect fault-tolerant infrastructure with a heavy focus on correctness, speed, and security.
• Collaborate directly with the CTO and founding team on product architecture and tech-stack redesign.
• Own end-to-end features across backend and product surfaces, shipping fast in an early-stage environment.
• Work in-office with a tight, execution-focused engineering culture.

Requirements

• 1–6 years engineering experience with strong backend fundamentals (TypeScript/Node, distributed systems, APIs).
• Proven ability to build production systems handling payments, transactions, or other high-volume data flows.
• Solid experience with relational databases, data modeling, and performance optimization.
• Hands-on exposure to cloud infrastructure (AWS, serverless, CI/CD).
• Startup-ready: thrives with ownership, speed, and minimal hand-holding.
• Clear communicator who can articulate trade-offs, architecture decisions, and product impact.

Why you should consider

• Work on mission-critical systems where correctness and performance directly impact real businesses.
• Join an early engineering team with high ownership, direct access to founders, and meaningful equity upside.
• Solve complex problems in
  fintech, compliance automation, taxation, and global money movement
  .
• Build for scale—10x growth expected in the next year.
• In-office culture with a driven team known for craftsmanship, detail orientation, and strong execution.