Senior Back-end Developer

What You'll Do

We're looking for skilled backend engineers who thrive on building systems that are not only functional — but resilient, scalable, and maintainable under real-world pressure.

You'll be a key part of our backend platform team, designing and building systems that handle tens/hundreds of thousands of daily transactions, support real-time data pipelines, and scale effortlessly with business growth.

Your Responsibilities:

- Design and develop robust backend services that deliver high performance, fault tolerance, and scalability.

- Build and maintain well-structured RESTful or gRPC APIs to support mobile and web apps.

- Architect and optimize database systems — from relational (PostgreSQL, MySQL) to NoSQL, time-series, and distributed storage.

- Deploy and monitor production systems using modern DevOps practices (Docker, K8s, CI/CD).

- Analyze and improve system performance to handle growing user traffic and data volumes.

- Evaluate and integrate new technologies to modernize our platform and enhance performance.

- Collaborate with team members to solve complex technical challenges, proactively contribute ideas and improvements.

What We're Looking For:

- Bachelor’s degree in Computer Science, Software Engineering, or related field.

- Experience:

+ Senior: 5+ years in backend development. + Middle: 2+ years of hands-on backend development experience.

- Proficient in Java Spring Boot or .Net Core, with solid understanding of microservices architecture.

- Deep understanding of backend fundamentals: RESTful APIs, gRPC, event-driven architecture, DDD, CQRS is a plus.

- Strong database experience:

+ SQL/NoSQL: MySQL, PostgreSQL, Redis, ScyllaDB, ClickHouse, ElasticSearch, etc.

+ Messaging systems: Kafka, RabbitMQ, or similar.

- Familiar with containerization and orchestration tools: Docker, Kubernetes.

- Experience with CI/CD, Git, and cloud platforms like AWS, GCP.

- Solid understanding of application security, OOP, multithreading, unit testing (JUnit/Mockito).

- Bonus:

+ Built or maintained scalable, distributed, real-time processing systems.

+ Leadership or mentoring experience.

Mindset:

- Proactive, problem-solving attitude — you don’t just follow tickets, you question them.

- Able to work independently and communicate clearly in a cross-functional team.

- Passionate about clean code, system performance, and long-term maintainability.