Senior Typescript Backend Engineer

OP is a fast-growing iGaming startup building the next generation of sweepstakes-based gaming experiences. They are seeking a Senior Typescript Backend Engineer to design and scale backend services for their gaming platform.

Responsibilities:

• Architect API‑first, microservice‑oriented systems that are modular, resilient, and independently deployable
• Build and maintain reliable REST/GraphQL APIs and third‑party integrations (payments, KYC/identity, fraud, analytics)
• Own backend features end‑to‑end—from design and implementation through production rollout and operational support
• Implement secure, audit‑friendly transaction processing for deposits, withdrawals, bonuses, and settlement workflows
• Ensure consistency and traceability across high‑volume financial operations and asynchronous workflows
• Collaborate with AppSec and compliance partners to meet PCI DSS expectations around access control, data handling, logging, and vulnerability remediation

Requirements:

• 5+ years designing, building, and scaling backend services powering gameplay, wallets, payments, promotions, and player account management using TypeScript + Node.js (Bonus: NestJS, Express)
• Architect API‑first, microservice‑oriented systems that are modular, resilient, and independently deployable
• Build and maintain reliable REST/GraphQL APIs and third‑party integrations (payments, KYC/identity, fraud, analytics)
• Own backend features end‑to‑end—from design and implementation through production rollout and operational support
• Comfort developing and scaling systems that may operate across on-prem and cloud environments
• Experience with transactional, audit-friendly systems is highly valued
• Implement secure, audit‑friendly transaction processing for deposits, withdrawals, bonuses, and settlement workflows
• Ensure consistency and traceability across high‑volume financial operations and asynchronous workflows
• 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
• Collaborate with AppSec and compliance partners to meet PCI DSS expectations around access control, data handling, logging, and vulnerability remediation
• Hands on experience using AI platforms to accelerate development and testing
• Experience working in Agile/Scrum environments
• FinTech, gaming, casino, payment, regulatory, WebSockets, or real-time systems experience