Senior Software Engineer, Backend

What You’ll Do

• Build and maintain APIs that serve 15,000+ active contractors for payments, onboarding, lead management, and AI-powered workflows
• Integrate with third-party services including payment processors, CRMs, communication platforms (Twilio), and other contractor-facing tools; ensure integrations are reliable and observable
• Contribute to the Rails → Go migration: move data models and business logic into Onikisu to expand the context available to our AI products
• Design data models that don’t become technical debt
• Debug production issues independently; find the root cause, fix it, and prevent recurrence
• Review code with a high bar and help teammates level up

What We’re Looking For

• Go or strong polyglot depth (Go preferred; shipped and maintained Go services in production)
• API and integration experience with payment processors (Stripe, Braintree), CRMs, and communication platforms (Twilio, SendGrid)
• Payments mindset: correctness over cleverness
• Independent debugging skills
• Startup background with fast shipping experience
• Bonus: Rails codebase experience or familiarity with RAG pipelines and LLM-adjacent data architecture

What We’re Not Looking For

• Someone who needs well-defined tickets before starting work
• Someone who treats code review as a formality
• Someone who escalates bugs to QA rather than debugging independently
• Primary experience in cloud infrastructure or DevOps (need product engineers who own features end to end)
• Someone who measures success by tickets closed rather than working systems
• Someone looking for a large company with narrow ownership

Benefits

• Mission-driven, values-based culture
• Competitive pay
• Unmatched opportunities to learn and develop
• Generous PTO, plus paid company holidays
• Stock options
• Medical, dental, and vision options
• 401(k)
• Free Employee Assistance Program
• Parental Leave Program
• Pet Insurance