Senior Node.js Developer

TL;DR

Senior Node.js Developer: Building highly reliable, correct, and observable backend systems with an accent on strict quality standards, automation, and clean architecture. Focus on ensuring maximum type safety, robust unit/integration tests, and advanced architectural patterns for scalable systems.

Location: Hybrid: Office in Limassol, Cyprus

Company

hirify.global builds backend systems with a strong focus on reliability, correctness, and observability, emphasizing strict quality standards and automation.

What you will do

• Develop backend systems with 100% test coverage, mutation testing, and strict linting for maximum type safety.
• Implement automated git hooks and CI/CD with review environments.
• Utilize explicit function return types, exhaustive switch checks, and functional patterns.
• Create CLI tools, health checks, metrics, and structured logging.
• Set up Prometheus metrics, Loki logs in Grafana, and Slack alerting.

Requirements

• Professional Node.js/TypeScript experience with complex backend systems.
• Deep understanding of TypeScript’s type system and best practices (using @tsconfig/strictest preset).
• Ability to write highly reliable code and robust unit- and integration tests.
• Experience with NestJS or similar DI-based frameworks.
• Proficiency with SQL databases, transactions, and ORM (TypeORM).
• Experience with message queues (RabbitMQ, Kafka, or similar).
• Strong knowledge of SOLID/GRASP principles, GoF/enterprise patterns, and OO-design.
• Strong knowledge of TCP/IP stack, OWASP Top 10, and security best practices.
• English: B2+ written level required.

Nice to have

• Telecommunications or messaging platform experience (SMPP protocol, WhatsApp, Telegram, GSM7, UCS2 data codings).
• Node.js profiling, TCP-based protocol implementation, and data encoding knowledge.
• Experience with Docker, DDD, and DevOps (k8s, helm, werf).
• Familiarity with functional programming patterns (Result types, Option types, monads) and Zod.

Culture & Benefits

• Flexible start of the day.
• Paid leave of 21 days.
• Remote work option.