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Sr Backend Software Engineer

OPUnited States
Remote · USAMid-Senior Level

Skills

  • TYPESCRIPT
  • NODE.JS
  • NESTJS
  • EXPRESS
  • POSTGRESQL
  • API DESIGN
  • SYSTEM ARCHITECTURE
  • TRANSACTION PROCESSING
  • CLOUD INFRASTRUCTURE
  • DATABASE DESIGN
  • SECURITY
  • WEBSOCKETS

About the role

OP is partnering with a fast-growing iGaming startup building the next generation of sweepstakes-based gaming experiences, operating at the intersection of gaming, technology, and user engagement. Their platform enables seamless cross-game interactions powered by innovative mechanics. With plans to triple in size this year, they are looking for builders who thrive in fast-paced environments where ideas move from concept to live product in weeks.

We are building a high-growth platform that blends social gaming with innovative currency mechanics, creating seamless, real-time experiences across games. We re creating next-gen sweepstakes gaming experiences that are fast, fun, and highly scalable.

What You Ll Own

  • 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.

What You Bring

  • 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.

Why Join?

  • Opportunity to work on a live, scaling product.
  • High-growth environment with strong career progression.
  • Fully remote with flexible work culture.
  • Collaborative, innovation-driven team with direct leadership exposure.

Benefits

  • 100% medical, dental & vision coverage (partial for dependents).
  • 401(k) employer match.
  • Annual performance bonus: 10% 15%.
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