CareerPlanSign in

Senior Backend Developer

Sofia, Sofia City Province, bg💼 Full-time🗓 2026-09-30 → 2026-10-02

Core

Architecting and developing high-concurrency, real-time betting and financial transaction microservices for a global online gaming platform.

Role type

Senior Backend Developer (PHP/Node.js)

Builds

High-throughput RESTful APIs, domain-driven microservices, and real-time event processing systems.

Domain

Online Gaming & Betting / FinTech

Deliverable

production ML models | product features

Required skills

Advanced PHP (7.4+), Domain-Driven Design (DDD), MySQL/MariaDB optimization, Docker, RESTful API design, JavaScript/Node.js, OOP/SOLID principles, automated testing (TDD/BDD)

Preferred skills

Event-driven architectures (RabbitMQ, Kafka), caching layers (Redis, Memcached), high-load database sharding, Nginx/Apache administration

Technologies

PHP, Node.js, MySQL, MariaDB, Docker, Git, RabbitMQ, Kafka, Redis, Memcached, Nginx, Apache

Responsibilities

Architect and write high-performance PHP code using DDD and SOLID principles; Lead domain modeling and define Bounded Contexts; Conduct rigorous code reviews and drive performance tuning; Mentor junior and mid-level developers; Partner with QA and DevOps for reliable deployment.

Seniority

Senior, hands-on IC

Sourced via smartrecruiters · Listed on CareerPlan, which tracks 902,000+ jobs from 20+ sources.