> Markdown version of [/jobs/ext/2737510-senior-staff-backend-engineer](https://www.wearedevelopers.com/jobs/ext/2737510-senior-staff-backend-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Senior / Staff Backend Engineer

- **Company:** Marnoy Interests, Ltd.
- **Location:** United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), .NET Framework, Application Programming Interfaces (APIs), Databases, Data Integrity, PostgreSQL, Node.Js, PCI Data Security Standards, Scrum Methodology, Systems Architecture, Systems Integration, TypeScript, Software Vulnerability Management, WebSocket, Data Logging, Transaction Processing (Computing), Data Processing, Real Time Systems, Spring-boot, Software Security, Backend, AI Platforms, Graphql, NestJS, Golang
- **Published:** September 5, 2026
- **Apply:** https://arc.dev/remote-jobs/j/redirect/phpwtuwkm5

## About the Role

* 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.



## Related Videos

- [Nest.js - TypeScript in the backend can also be clean](https://www.wearedevelopers.com/videos/1033-nest-js-typescript-in-the-backend-can-also-be-clean)
- [Migrating half a million users to a new payment service provider](https://www.wearedevelopers.com/videos/730-migrating-half-a-million-users-to-a-new-payment-service-provider)
- [Go with the Flow: Stop the Leaks Before Your Memory's a Waterfall!](https://www.wearedevelopers.com/videos/100073-go-with-the-flow-stop-the-leaks-before-your-memory-s-a-waterfall)
- [Stop using Node.js like in 2020! What changed and what you can do today with Node.js](https://www.wearedevelopers.com/videos/100011-stop-using-node-js-like-in-2020-what-changed-and-what-you-can-do-today-with-node-js)
- [Next, Nest, Nuxt… Nust?](https://www.wearedevelopers.com/videos/421-next-nest-nuxt-nust)
- [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape)

## Related Articles

- [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again)
- [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development)
- [Backend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/196-backend-developer-salary-in-germany-2023)
- [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers)
- [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers)
- [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers)