Staff Backend Engineer (Commerce)

TL;DR

Staff Backend Engineer (Ruby on Rails): Building and optimizing critical financial infrastructure for a home-services marketplace with an accent on payments, billing, and payouts. Focus on evolving scalable system architecture, ensuring financial correctness, and improving operational observability for high-stakes money-flow systems.

Location: Hybrid schedule requiring two days of in-office collaboration per week in San Francisco, CA

Salary: $150,000 - $200,000

Company

hirify.global is a marketplace platform that connects people with Taskers for everyday home tasks, operating in partnership with IKEA.

What you will do

• Define multi-quarter technical roadmaps for Commerce domains, including payments, payouts, and billing.
• Lead complex cross-team technical initiatives integrating Stripe, Sovos, and internal systems.
• Translate ambiguous high-stakes business goals into clear technical strategies and designs.
• Elevate reliability and observability using Datadog and Kafka for critical money-flow systems.
• Mentor engineers and champion high-quality testing and technical documentation.
• Lead the adoption of Spec-Driven Development (SDD) utilizing AI tools.

Requirements

• 7+ years of professional backend engineering experience with demonstrated Staff-level impact.
• Deep expertise in building and evolving large Ruby on Rails applications.
• Strong SQL and data modeling skills for financial use cases (Postgres, Snowflake).
• Hands-on experience with async/event-driven systems using Kafka.
• Mastery in production debugging and RSpec testing for financial correctness.
• Must be based in or be able to work from the San Francisco office (hybrid).

Nice to have

• Experience in fintech, billing, or e-commerce domains.
• Hands-on experience with AI tools such as Claude or Augment CLI.
• Experience integrating with Stripe or tax engines like Sovos.
• Knowledge of accounting, financial reconciliation flows, audits, or compliance systems.

Culture & Benefits

• Hybrid work environment combining flexibility with regular in-person connection.
• Employer-paid health insurance and 401k match with immediate vesting for US employees.
• Generous and flexible time off, including two company-wide closure weeks.
• Wellness, productivity, and education stipends.
• IKEA discounts and reproductive health support.