JobCubby JobCubby
Sign up
Z

Backend Developer (Node.js/Nest.js)

Zexter · Yerevan, Armenia

Software Development · 11-50 employees

Jun 30
Remote Senior (5-10 yrs) Full-time Cyprus
Log in to apply, save this posting, or score it against your profile with AI.

About the role

Develop and maintain a proprietary high-load backend ecosystem for the iGaming industry. Ensure financial accuracy, transaction consistency, and system reliability while implementing new product features.

What they look for

Node.js TypeScript PostgreSQL NestJS SQL Optimization Clean Architecture REST API Design Automated Testing Load Testing iGaming Experience Redis Docker Kubernetes CI/CD Event-Driven Architecture

Requirements

Requires 4+ years of experience with Node.js, TypeScript, and PostgreSQL, and 3+ years with NestJS. Commercial experience in the iGaming industry and expertise in high-load system optimization are essential.

Benefits

Fully Remote Work Modern Technology Stack AI-Powered Development Tools

Full description

Zexter is an ambitious product company building its own technological ecosystem in the iGaming industry.

We develop our proprietary platform, which is already live and actively operating, while continuously expanding our product portfolio. This enables us to adapt quickly to market demands and rapidly introduce new innovations.

Requirements

  • 4+ years of commercial backend development experience with Node.js and TypeScript.
  • 4+ years of hands-on production experience with PostgreSQL and other relational databases.
  • Strong SQL expertise, including:
  • Query optimization for high-load systems.
  • Index design and performance analysis.
  • Transaction management and concurrency control.
  • Identifying and resolving database performance bottlenecks.
  • 3+ years of commercial experience with NestJS.
  • Excellent understanding of:
  • Dependency Injection.
  • Modular application architecture.
  • Clean Architecture and software design principles.
  • REST API design and backend service architecture.
  • Experience developing and maintaining high-load production systems.
  • Solid experience with automated testing (unit/component and integration tests).
  • Experience with load and performance testing, including bottleneck identification and validating system behavior under heavy traffic.
  • Experience working on systems where financial accuracy, idempotency, transaction consistency, and auditability are critical.
  • Ability to write clean, maintainable, testable, and well-structured code.
  • Strong ownership mindset, taking responsibility for features from implementation and testing through deployment, monitoring, and production incident resolution.
  • Strong communication skills with the ability to clearly explain technical decisions, implementation details, and associated risks.
  • Ability to work effectively under deadlines and independently prioritize tasks.
  • Experience with code reviews, debugging, logging, monitoring, and production incident investigation.

iGaming Experience

  • Commercial experience in the iGaming industry.
  • Experience developing or maintaining backend systems for online casinos, sports betting, gaming platforms, wallets, payment systems, or transaction processing.
  • Experience integrating third-party game providers, payment gateways, or other external services.
  • Ability to investigate and resolve discrepancies in financial data, transactions, and provider integrations.
  • Strong understanding of the reliability, security, and data consistency requirements of production iGaming systems.

Nice to Have

  • Practical experience using AI-powered developer assistants (Cursor, Claude, or similar).
  • Experience with Redis, message queues, background jobs, and event-driven architecture.
  • Experience with Docker, Kubernetes, CI/CD pipelines, and cloud infrastructure.

What We Offer

  • Work Format: Fully remote.
  • Compensation: Negotiable based on experience.
  • Growth: Opportunity to work with a modern technology stack, a strong engineering team, minimal bureaucracy, and AI-powered development tools that help eliminate routine work.