Fullstack Engineer

Summary

Join GoFasti, a Talent-as-a-Service company, as a remote Fullstack Engineer based in Latin America. You will integrate payment systems (RevenueCat, Qonversion, Tilled, Finix), build SDKs, manage the backend for transaction reconciliation and analytics, and contribute to developer tooling. The ideal candidate possesses 3+ years of experience with Node.js or Go, familiarity with payment APIs, and a strong understanding of API design and security. The role offers a monthly salary between $2,000 and $3,000 USD, depending on experience, and is for an independent contractor working remotely for a client. The hiring process involves application review, interviews, and a technical assessment.

Requirements

• 3+ years of experience working with Node.js (NestJS or Express) or Go (for lower latency + typed services)
• PostgreSQL (for transactions, dev accounts)
• Redis / BullMQ (for jobs like payout processing, email triggers)
• Familiarity with payment APIs (Stripe, Tilled, RevenueCat webhooks)
• Experience with IAP / subscription logic (client or backend)
• Working knowledge of webhooks, receipts, and payout flows
• Strong grasp of API design, auth, token security
• Fluent in shipping SDKs or APIs for external devs
• Thinks in platforms and extensibility, not just features

Responsibilities

• Integrate RevenueCat or Qonversion with custom wrappers
• Build GetJar-branded SDKs (starting with Android & Web)
• Integrate Tilled or Finix for white-labeled payment infrastructure
• Own the backend stack for transaction reconciliation, analytics, and developer dashboard
• Contribute to dev tooling: API gateway, CLI, SDK auto-publishing

Benefits

• The Salary range offered for this position varies from (USD) $2,000 - $3,000 per month, depending on seniority and skillset
• This position is for an independent contractor, through a payroll platform
• The talent will work REMOTELY allocated at our client