Senior Typescript Backend Engineer
OP
full-remoteseniorbackend United States Yesterday via LinkedIn
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TypeScriptNode.jsMicroservicesRESTGraphQLPostgreSQLPCI DSSFinancial TransactionsAgileSecurity-First
About the role
Role Overview
Senior Backend Engineer (TypeScript)
Build and scale backend services that power gameplay and critical player systems for a fast-growing iGaming startup. You’ll design API-first, microservice-oriented architectures and own backend features end-to-end, from implementation to rollout and operational support.
Responsibilities
- Design and build backend services in TypeScript + Node.js powering gameplay, wallets, payments, promotions, and player account management
- Architect API-first, microservice systems that are modular, resilient, and independently deployable
- Develop and maintain REST/GraphQL APIs and third-party integrations (payments, KYC/identity, fraud, analytics)
- Own backend features end-to-end: design → implementation → production rollout → operational support
- Implement secure, audit-friendly transaction processing for deposits, withdrawals, bonuses, and settlement workflows
- Ensure consistency, traceability, and reliability across high-volume financial operations and asynchronous workflows
- Collaborate with AppSec and compliance partners to meet PCI DSS expectations (access control, data handling, logging, and vulnerability remediation)
- Comfortably work across environments that may span on-prem and cloud
Requirements
- 5+ years designing, building, and scaling backend services
- Strong experience with TypeScript + Node.js (bonus for NestJS and/or Express)
- Experience building transactional, audit-friendly systems
- Proven ability to design scalable, reliable system architecture
- Solid database skills, especially PostgreSQL
- Security-first mindset focused on data integrity and traceability
- Comfortable working autonomously in a startup environment
- Experience working in Agile/Scrum environments
- Hands-on experience using AI platforms to accelerate development and testing
Nice to Have
- FinTech, gaming/casino, payments, or regulatory experience
- WebSockets or real-time systems experience
Exclusions
- Java, Spring Boot, Go, .NET
About OP
OP is hiring for a fast-growing iGaming startup focused on sweepstakes-based gaming experiences at the intersection of gaming, technology, and user engagement. The platform supports cross-game interactions and rapidly moves ideas from concept to live product, with plans to triple in size.
Scraped 4/10/2026