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Senior Back-End Developer (Node.JS)

Develop and scale in-house backend platforms using Node.js and Nest.js, optimizing high-load SQL/NoSQL databases within a microservices architecture for a Fintech and iGaming client.

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Lionhires Ras Al Khaimah, Ras Al-Khaimah, UAE Source published Aug 17, 2026 Verified 2 weeks ago
✓ 100% verification score · Source: Lionhires Careers (Greenhouse) · Always confirm final requirements on the original source.
Complete source information imported The available role or programme description, requirements, benefits and source facts were imported from the public official endpoint and formatted for reading.
Employmentfull_time
MobilityVisa sponsorship / mobility indicated

Overview

Develop and scale in-house backend platforms using Node.js and Nest.js, optimizing high-load SQL/NoSQL databases within a microservices architecture for a Fintech and iGaming client.

Full job description

About the Role Are you a seasoned Backend Engineer who excels at scaling high-load architectures, optimizing complex databases, and crafting clean, testable code? We are looking for a Senior Backend Engineer (Node.js/Nest.js) to join our partner's engineering team on-site in Ras Al Khaimah, UAE. If you thrive on solving sophisticated database bottlenecks, building resilient microservices from scratch, and handling Big Data in a high-concurrency environment, this is your next big career move.

About the Client Our partner is a dynamic tech powerhouse building cutting-edge product engineering solutions across Fintech, iGaming, and Marketing. They excel at turning innovative concepts into high-performing engines and launching them at global scale. As their exclusive recruitment partner, Lionhires manages their full-cycle talent acquisition, connecting top-tier tech talent with this fast-growing, ambitious team.

What You Will Do

  • Architect & Develop: Build and maintain robust in-house backend platforms using Node.js and Nest.js within a high-performing microservices architecture.
  • Database & High-Load Optimization: Solve complex DB performance bottlenecks by debugging queries, managing index strategies, leveraging data partitioning, and optimizing high-load SQL/NoSQL databases (MySQL, MongoDB).
  • API & Service Integration: Design and implement high-throughput third-party API integrations, working with REST, GraphQL, and WebSockets.
  • Guard Reliability & Quality: Write clean, testable, and maintainable code following TDD principles, utilizing Redis and RabbitMQ to ensure maximum system reliability.
  • Collaborate & Scale: Work closely with cross-functional teams to design, normalize, and continuously improve scalable data systems.

What You Bring

  • Proven Experience: At least 5 years of commercial web development experience, with 5+ years focused specifically on Node.js and Nest.js.
  • Database Mastery: Hands-on experience managing relational/NoSQL DBs and Big Data, with a deep understanding of table indexing, the DB Query Planner, normalization principles, and query optimization.
  • Architecture & Messaging: Strong knowledge of microservice architecture, REST, GraphQL, WebSockets, RabbitMQ, and Redis.
  • Engineering Standards: Solid proficiency in ES6+, Git version control, and Test-Driven Development (TDD).
  • Communication: Intermediate (or higher) English proficiency with strong problem-solving capabilities and collaborative skills.

Bonus Points For:

  • Hands-on experience with TypeScript.
  • 2+ years of experience working with CI/CD pipelines, containerization, and Kubernetes.
  • Practical experience using NATS.

What's in It for You

  • Financial Growth: Highly competitive remuneration level with structured annual performance reviews.
  • Global Mobility: Full relocation support to Ras Al Khaimah, UAE (including flight tickets, up to 2 weeks of hotel accommodation, and visa support for you and your family members).
  • Work-Life Balance: 21 non-business days of paid annual vacation plus 6 fully paid sick days.
  • Professional Growth: Opportunities to tackle high-load technical challenges and company-supported language development initiatives.
  • Culture & Perks: Regular team-building activities in a collaborative, supportive tech environment.

Our Recruitment Process We respect your time and aim to keep our process transparent and efficient:

  1. Initial Screen: A casual conversation with a Lionhires Recruiter to discuss your background and expectations.
  2. Technical Assessment: A practical evaluation via HackerRank.
  3. Technical Interview: A deep-dive discussion with our partner’s Technical Team.
  4. Final Interview: A strategic conversation with the Hiring Leads.
  5. Offer: Welcome aboard!

(Please note: This is a full-time, on-site role in Ras Al Khaimah, UAE. Remote or hybrid options are not available for this position.)

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Verification notes

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