Senior Java Backend Developer

Please submit your application and CV in English only.

Webellian is a European company, and English is the primary language used in our internal communication and recruitment process. Applications submitted in other languages will not be considered.

Please also note that, for this position, we are currently able to hire only candidates based in Uzbekistan, where our Asian branch is located.

About the Position

Webellian is looking for a Senior Java Backend Developer to build the backend of a new social discovery application connecting people through shared activities and events.

You will take ownership of the backend services, APIs, data flows, security, and production readiness, working closely with a Senior Flutter Developer and an international project team.

Key Responsibilities

• Design, build, and maintain the Java backend services and APIs supporting the mobile application.

• Implement the business logic for user onboarding, profiles, events, matching, communication, and notifications.

• Define clear and well-documented API contracts for the Flutter application.

• Design reliable data models, persistence layers, and database migrations.

• Implement secure authentication, authorization, validation, and protection of personal data.

• Design the backend to support at least 10,000 concurrent users and horizontal scaling.

• Write unit, integration, API, load, and performance tests.

• Implement logging, monitoring, health checks, and error tracking.

• Support containerization, CI/CD, cloud deployment, release stabilization, and documentation.

Required Experience & Skills

• At least five years of professional backend-development experience with Java.

• Strong experience with modern Java, Spring Boot, Spring Security, and Spring Data.

• Experience designing and documenting production REST APIs using OpenAPI or Swagger.

• Strong knowledge of SQL, relational data modelling, JPA, and Hibernate.

• Experience with OAuth 2.0, OpenID Connect, or JWT.

• Experience designing scalable and resilient services using caching, asynchronous processing, or message queues.

• Knowledge of automated testing using JUnit, Mockito, Spring Boot Test, or comparable tools.

• Experience with Docker, Git, CI/CD, cloud environments, and production monitoring.

• Professional working proficiency in both English, Russian is a plus

• Good communication skills.

What We Offer

• A fully remote position following Uzbekistan working hours.

• An international working environment with teams across several countries.

• Senior-level ownership from backend implementation through production release.