[Remote] Senior Typescript Backend Engineer

Note The job is a remote job and is open to candidates in USA. OP is partnering with a fast-growing iGaming startup to hire talented individuals building the next generation of sweepstakes-based gaming experiences. The role involves designing, building, and scaling backend services, as well as owning backend features from design to production rollout. Responsibilities 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 Nice to have FinTech, gaming, casino, payment, regulatory, WebSockets, or real-time systems experience Exclusions Java, Spring Boot, Go, .NET Skills 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 Nice to have FinTech, gaming, casino, payment, regulatory, WebSockets, or real-time systems experience Benefits 100% medical, dental & vision coverage (partial for dependents). 401(k) employer match. Company Overview OP is one of the fastest-growing technology consulting and solutions companies in the U.S. It was founded in 2006, and is headquartered in Irvine, California, USA, with a workforce of 201-500 employees. Its website is http//www.orangepeople.com/. Company H1B Sponsorship OP has a track record of offering H1B sponsorships, with 8 in 2025, 5 in 2024, 1 in 2023, 8 in 2022, 6 in 2021, 11 in 2020. Please note that this does not guarantee sponsorship for this specific role.