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# Senior Backend Software Engineer

- **Company:** The Spinx Company, LLC.
- **Location:** United States (Remote available)
- **Experience:** Expert
- **Salary:** $160,000 - $190,000
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Databases, Data Integrity, Database Design, PostgreSQL, Node.Js, Systems Architecture, Systems Integration, TypeScript, WebSocket, Transaction Processing (Computing), Real Time Systems, Backend, Front End Software Development, NestJS
- **Published:** November 13, 2026
- **Apply:** https://jobs.lever.co/Spinquest/19f07349-8bd0-49e5-b1d3-c1fa2093531a/apply

## About the Role

* Strong experience with TypeScript + Node.js (NestJS/Express a plus)
 * Proven ability to design scalable, reliable systems
 * Experience with transactions, integrations, and system architecture
 * Solid database skills (especially PostgreSQL)
 * Security-first mindset with attention to data integrity and traceability
 * Comfortable working autonomously in a startup environment

Bonus:

 * Background inGaming/iGaming, fintech, WebSockets, or real-time systems

## Description

* Design and scale backend systems powering gameplay, payments, and user experiences
 * Build reliable APIs and integrations (including third-party systems)
 * Architect secure, audit-friendly systems for transaction processing
 * Optimize performance for real-time, high-traffic environments
 * Drive infrastructure and database design (Postgres, cloud, etc.)
 * Collaborate closely with product and frontend to ship end-to-end features