Software Engineer (Back End)

Aboon is an AI-native third-party administrator focused on simplifying retirement plan administration for advisors and business owners. The company is seeking a senior back-end engineer to develop and operate the core platform for its Workplace and TPA products, including Rails services, data connectivity, agent-facing tools, permissions, and auditability.

Responsibilities:

• Own major feature development end-to-end across our products, from design doc through deployment and monitoring
• Build the tool surfaces our agents act through: typed, permissioned, logged actions against our system of record, with staging-and-promote patterns so nothing writes to a plan without a gate
• Design and run our data connectivity layer: recordkeeper feeds, payroll providers, payments, and identity
• Make auditability a priority so that every action, human or agent, is traceable, explainable, and regulator-ready
• Lead architectural discussions, write design docs, and mentor through code review

Requirements:

• 6+ years of professional software development experience
• Deep expertise in Ruby/Rails: domain modeling, background jobs, API design, performance
• Proven track record designing scalable APIs and data models — and strong instincts for permissions, idempotency, and auditability in systems that move real money
• Proficient working with coding agents; we're not hand-rolling boilerplate
• Familiarity with AWS and infrastructure-as-code
• Experience integrating third-party systems (payments, identity, CRM, payroll) and designing for their failure
• Excellent communication skills and a collaborative mindset
• Work authorization required; no visa sponsorship
• Experience exposing systems to LLM agents (MCP, tool APIs), fintech or retirement domain, React/TypeScript for occasional full-stack work