[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.Responsibilities5+ 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 deployableBuild 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 supportComfort developing and scaling systems that may operate across on-prem and cloud environmentsExperience with transactional, audit-friendly systems is highly valuedImplement secure, audit friendly transaction processing for deposits, withdrawals, bonuses, and settlement workflowsEnsure consistency and traceability across high volume financial operations and asynchronous workflowsProven ability to design scalable, reliable systemsExperience with transactions, integrations, and system architectureSolid database skills (especially PostgreSQL)Security-first mindset with attention to data integrity and traceabilityComfortable working autonomously in a startup environmentCollaborate with AppSec and compliance partners to meet PCI DSS expectations around access control, data handling, logging, and vulnerability remediationHands on experience using AI platforms to accelerate development and testingExperience working in Agile/Scrum environmentsNice to have: FinTech, gaming, casino, payment, regulatory, WebSockets, or real-time systems experienceExclusions: Java, Spring Boot, Go, .NETSkills5+ 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 deployableBuild 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 supportComfort developing and scaling systems that may operate across on-prem and cloud environmentsExperience with transactional, audit-friendly systems is highly valuedImplement secure, audit friendly transaction processing for deposits, withdrawals, bonuses, and settlement workflowsEnsure consistency and traceability across high volume financial operations and asynchronous workflowsProven ability to design scalable, reliable systemsExperience with transactions, integrations, and system architectureSolid database skills (especially PostgreSQL)Security-first mindset with attention to data integrity and traceabilityComfortable working autonomously in a startup environmentCollaborate with AppSec and compliance partners to meet PCI DSS expectations around access control, data handling, logging, and vulnerability remediationHands on experience using AI platforms to accelerate development and testingExperience working in Agile/Scrum environmentsNice to have: FinTech, gaming, casino, payment, regulatory, WebSockets, or real-time systems experienceBenefits100% medical, dental & vision coverage (partial for dependents).401(k) employer match.Company OverviewOP 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 SponsorshipOP 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.