ALT

Senior Fullstack Engineer, Payments

ALT

full-time

Posted on:

Location Type: Remote

Location: United States

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Salary

💰 $140,000 - $180,000 per year

Job Level

About the role

  • Engineer Financial Integrity: Build and maintain our custom-built double-entry ledger system to ensure every cent is accounted for across the platform.
  • Own Lending Infrastructure: Design and scale our lending products—from the logic of credit disbursements to the automated lifecycle of loan management.
  • Architect Integrations: Design and implement robust integrations with payment gateways and banking partners, ensuring 99.99% reliability and seamless reconciliation.
  • Own the UX of Money: Create high-trust user interfaces for payments and lending that make complex financial actions feel simple, transparent, and secure.
  • Balance Rigor with Speed: Make thoughtful trade-offs between rapid feature shipping and the uncompromising correctness required for financial systems.
  • Be a Multiplier: Level up the team through rigorous code reviews, technical documentation, and mentorship.

Requirements

  • 5+ years of experience with a heavy focus on backend systems (Python, Postgres, AWS) and a proven ability to build modern frontends (React, TypeScript)
  • Fintech or Payments experience: You’ve worked with ledgers, payment processors, or lending products and understand the complexities of moving money.
  • Database Mastery: You are an expert in SQL and relational database design—you know how to write a transaction that won't fail under load.
  • Fullstack Ownership: A track record of taking a complex financial feature from a technical design doc all the way to a polished UI in production.
  • Bonus: Experience with distributed systems, credit/risk modeling, or the alternative asset space.
Benefits
  • A seat at the table to help shape the future of Alt and the alternative asset space
  • Autonomy and ownership on projects that matter
  • $100/month work-from-home stipend
  • $200/month wellness stipend
  • WeWork office stipend
  • 401(k) retirement benefits
  • Flexible vacation policy
  • Generous paid parental leave
  • Competitive healthcare benefits, including HSA, for you and your dependent(s)
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
PythonPostgresAWSReactTypeScriptSQLrelational database designdistributed systemscredit modelingrisk modeling
Soft Skills
code reviewstechnical documentationmentorshipthoughtful trade-offsteam collaboration