Full Stack Engineer

Summary

Boldin is a comprehensive financial planning platform that helps people understand their financial picture and make smarter decisions with their money. They are seeking a Full Stack Engineer to enhance their Time to Value (TTV) team, focusing on building and maintaining user registration, onboarding, and payment integration processes.

Responsibilities

• Build and maintain the registration, onboarding, checkout, and conversion flows that move visitors to activated, paying members
• Own integrations across the funnel: payment platforms, lifecycle/marketing messaging, and product analytics — including the webhook handlers and gateway services that keep them in sync
• Contribute to the ongoing payments migration (consolidating multiple legacy payment platforms onto our primary processor) and help simplify a multi-gateway billing setup
• Work across the stack: React/TypeScript on the front end, Ruby on Rails on the back end, with the data and webhook plumbing in between
• Partner with product, design, and the broader engineering org to instrument and improve top-of-funnel conversion, grounded in analytics
• Write tested, maintainable code and participate in code review

Skills

• 4+ years of professional software engineering experience, primarily backend
• Strong experience with a server-side framework and relational database (we use Ruby on Rails; comparable experience is fine if you're eager to pick up Rails)
• Strong experience building webhook-driven, third-party API integrations, with sound reasoning about failure, retries, and idempotency
• Working proficiency with a modern JS/TypeScript front-end framework (we use React) — comfortable contributing to the front end when the work calls for it
• A pragmatic eye for the user experience, especially in high-stakes flows like signup and payment
• Experience with financial-account aggregation providers (Plaid, Finicity, Yodlee, or similar)
• Ruby on Rails experience
• Experience migrating or consolidating payment/billing systems
• Background in fintech, financial services, or another domain with sensitive user data and compliance considerations
• Familiarity with CRM, lifecycle, or analytics tooling (Intercom, ActiveCampaign, Segment, or similar) — these are learnable on the job
• Experience optimizing top-of-funnel conversion and running experiments

Qualifications

Must Haves

• 4+ years of professional software engineering experience, primarily backend
• Strong experience with a server-side framework and relational database (we use Ruby on Rails; comparable experience is fine if you're eager to pick up Rails)
• Strong experience building webhook-driven, third-party API integrations, with sound reasoning about failure, retries, and idempotency
• Working proficiency with a modern JS/TypeScript front-end framework (we use React) — comfortable contributing to the front end when the work calls for it
• A pragmatic eye for the user experience, especially in high-stakes flows like signup and payment

Nice to Haves

• Experience with financial-account aggregation providers (Plaid, Finicity, Yodlee, or similar)
• Ruby on Rails experience
• Experience migrating or consolidating payment/billing systems
• Background in fintech, financial services, or another domain with sensitive user data and compliance considerations
• Familiarity with CRM, lifecycle, or analytics tooling (Intercom, ActiveCampaign, Segment, or similar) — these are learnable on the job
• Experience optimizing top-of-funnel conversion and running experiments