Remote Position
[Remote] Software Engineer (Back End)
🌍 Remote · Spain
💼 Full-time
Note: The job is a remote job and is open to candidates in USA. 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
Skills
- 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
Benefits
- Annual bonus
- Equity
- Comprehensive health, dental, and vision insurance, with additional optional coverage
- 401(k) with company match
- Flexible paid time off and holidays
- 10 weeks paid parental leave
- A fully remote work environment, with all the technology and equipment you need
- Support for professional development and career growth
Company Overview