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Sr. Full Stack Engineer

OP

full-remoteseniorpermanentfullstack United States 3 days ago via LinkedIn

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Tags

ReactNext.jsTypeScriptNode.jsTailwind CSSRESTGraphQLPostgreSQLAgile/ScrumFinTech Payments

About the role

Sr. Full Stack Engineer (Senior)

Own and deliver product features end-to-end across frontend experiences, backend services, and APIs.

What you’ll do

  • Full-stack feature ownership: Drive features from design discussions through implementation, release, and ongoing production support.
  • Frontend engineering:
    • Build responsive, performant, and accessible consumer web experiences with React, Next.js, and Tailwind.
    • Implement complex UI flows integrating real-time and transactional data.
    • Translate UX flows into clean, maintainable UI.
  • Backend engineering:
    • Design and build TypeScript + Node.js backend services (preferably NestJS or Express).
    • Develop API-first, microservice-oriented systems (modular, resilient, independently deployable).
    • Build and maintain REST and/or GraphQL APIs for frontend and mobile clients.
    • Implement transactional, audit-friendly workflows for gameplay, wallets, bonuses, and settlements.
    • Integrate with third-party systems including payments, KYC/identity, fraud, and analytics.
  • Quality, security, and operations:
    • Partner with QA/SDET to ensure strong automated and manual test coverage.
    • Collaborate with AppSec and compliance for PCI and security expectations.
    • Design for traceability, data integrity, and operational observability.
    • Support production systems and participate in debugging and incident resolution.

Requirements

  • 5+ years of professional software engineering with significant frontend and backend ownership.
  • Strong experience with React, Next.js, Tailwind, TypeScript, and Node.js.
  • Experience building/integrating REST or GraphQL APIs.
  • Strong database skills, especially PostgreSQL.
  • Experience scaling consumer-facing production systems.
  • Familiarity with Agile/Scrum.

Strongly valued

  • Experience with transactional, audit-friendly systems.
  • Payments/wallets/financial workflows; FinTech, gaming/casino, or other regulated-industry experience.
  • Real-time systems (e.g., WebSockets) or mobile experience.
  • Proven use of AI tooling to accelerate development and testing.

Benefits & work style

  • Fully remote with a flexible work culture.
  • Medical, dental & vision coverage (100%; dependents partial).
  • 401(k) employer match.

About OP

OP is a technology company building consumer-facing products and services. The role focuses on end-to-end engineering across web and backend systems that support gameplay, player accounts, and financial workflows such as wallets, payments, and promotions.

Scraped 6/17/2026

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