Midwestern Interactive Growth Team

Build and own full-stack systems and instrumentation to make unit economics visible and actionable, collaborating with Finance, Operations, and Engineering leadership to solve operational problems. | 5+ years development experience with strong Ruby on Rails and SQL skills, scalable system design, and comfort with financial concepts to translate business needs into technical specifications. | ABOUT THE COMPANY A profitable, fast-growing SaaS platform in the mission-driven technology space, backed by a leading accelerator and a recent $140M growth investment. The company facilitates hundreds of millions in transactions annually and is on track to cross $100B in total volume over the next decade. With 130+ employees distributed across 30+ states and a $100M AI product investment underway, this is a company operating at meaningful scale with significant runway ahead. * Remote-first role based in the US. Team members are expected to attend multiple company-wide and team-specific on-sites throughout the year. * Contract to Hire after 3 months. * Sponsorship not available. THE ROLE This is not a traditional product engineering role. It is a deeply business-embedded engineering position at the intersection of Finance, Engineering, and Operations. The hire will build the systems and instrumentation that make unit economics visible, trustworthy, and actionable - working in close partnership with Finance, Operations, and Engineering leadership rather than from a standard product roadmap. Ideal for a Rails engineer who wants to apply strong technical skills to real operational problems and who is motivated by business impact, not just feature delivery. RESPONSIBILITIES * Own full-stack delivery from UI to backend services, including database tuning and performance * Build new features start to finish - architecture design, coding, automated testing, and production support * Work closely with teammates in a fast-paced, agile environment across pods and the broader Engineering org * Tackle technical issues throughout the stack and contribute to shared documentation * Contribute to coding standards, tech debt refinement, and system security monitoring * Participate in interviewing and onboarding new team members * Participate in on-call support rotation (team-based, paired) WHAT THEY ARE LOOKING FOR * Strong experience with Ruby on Rails * System design experience focused on incremental, scalable, resilient architecture * Comfortable across the stack - backend services, databases, and light frontend * Experience with modern frontend frameworks (React, Vue.js) * SQL database experience (PostgreSQL, MySQL, SQLite) * Deployment experience on Heroku, AWS, or similar * 5+ years of hands-on development experience * Comfort with financial concepts: margins, COGS, pricing, revenue recognition, or unit economics * Experience building systems where correctness, auditability, and explainability matter * Ability to work with non-technical stakeholders and translate ambiguous business questions into concrete technical work * Comfortable with ambiguity - shaping the problem, not just executing against a spec BONUS * Deep Ruby on Rails and RSpec expertise * Postgres database administration experience * Shipped code supporting tens of thousands of users including enterprise customers * Operations/SRE experience including networking, caching, database, and performance triage * Experience in fundraising, crowdfunding, fintech, or payments products * Startup environment experience * Experience building internal tools for Finance or Operations teams