Software Engineer – Back End

This is a fully remote position, open to applicants in United States.

📋 Description

• Develop the foundational platform that supports Workplace and TPA retirement products.

• Take ownership of significant feature development from the design document phase through to deployment and monitoring.

• Construct typed, permissioned, and logged tool interfaces for AI agents.

• Implement staging-and-promote methodologies to avoid ungated writes to retirement plans.

• Design and manage the data connectivity layer for recordkeeper feeds, payroll providers, payments, and identity verification.

• Ensure that every action taken by humans and agents is traceable, explainable, and compliant with regulatory standards.

• Lead architectural discussions and prepare design documentation.

• Provide mentorship through code reviews.

• Actively engage in product shaping through the shipping process.

• Report directly to the Director of Engineering.

⛳️ Requirements

• A minimum of 6 years of professional software development experience.

• Extensive expertise in Ruby/Rails, encompassing domain modeling, background jobs, API design, and performance optimization.

• Proven experience in designing scalable APIs and data models.

• Strong instincts regarding permissions, idempotency, and auditability in systems handling real financial transactions.

• Proficient in working with coding agents.

• Familiarity with AWS and infrastructure as code.

• Experience in integrating third-party systems, including payments, identity, CRM, and payroll platforms.

• Capable of designing systems with consideration for potential third-party failures.

• Excellent communication skills and a collaborative approach.

• Work authorization in the United States is required.

• No visa sponsorship is available.

• Experience interfacing systems with LLM agents, MCP, or tool APIs is preferred.

• Background in fintech or retirement domains is preferred.

• Experience with React/TypeScript is preferred for occasional full-stack tasks.

🏝️ Benefits

• Annual bonus.

• Equity opportunities.

• Comprehensive health, dental, and vision insurance, along with additional optional coverage.

• 401(k) plan with company match.

• Flexible paid time off and holidays.

• 10 weeks of paid parental leave.

• Fully remote work environment.

• Technology and equipment provided.

• Support for professional development and career advancement.

• In-person company retreats held 1–2 times a year.