Senior Java Full-Stack Developer (React, AWS)

We are looking for a Senior Java Full-Stack Developer who thrives on building end-to-end solutions and making sound technical decisions. In this role, you will design and develop complete features — from the database layer all the way to the user interface — while contributing to the architecture of scalable, high-demand systems. If you enjoy working in cloud environments, proposing architectural improvements, and taking ownership of your work, we'd love to hear from you.

Responsibilities

• Design and develop complete features spanning the full stack, from database to UI
• Build and maintain robust, scalable, and resilient software solutions in production environments
• Design, develop, and integrate REST APIs, including connections with external services
• Make well-reasoned technical decisions and propose architectural improvements
• Ensure code quality through automated testing (unit and integration)
• Work with cloud infrastructure to support high-demand, distributed systems
• Collaborate on maintaining observability standards across services (structured logging, metrics, and tracing)

Requirements

• 3+ years of full-stack development experience in production environments
• Proficiency in Java, with a proven track record of building end-to-end solutions
• Strong React skills (Next.js preferred)
• Hands-on experience with AWS (EKS, Lambda, S3, CloudWatch)
• Strong experience with Node.js (NestJS preferred)
• Solid understanding of design patterns and strong judgment for structuring code and projects
• Proficiency designing and developing REST APIs and integrating with external APIs
• Advanced handling of asynchronous programming (Promises, event loop, error handling)
• Experience with automated testing (unit and integration)
• Experience with both relational and non-relational databases
• Familiarity with event-driven architecture (SQS, RabbitMQ, or similar)
• Experience with Docker and a solid understanding of Kubernetes
• Knowledge of observability practices (structured logs, metrics, tracing)
• Understanding of API security (JWT, OAuth, access control)
• Experience with SSR/SSG and the judgment to choose the right strategy for each case
• Proficiency with state management (Redux, Zustand, or similar)
• Experience with UI testing (Jest, React Testing Library, or Cypress)
• Experience integrating with REST APIs and handling authentication and sessions
• Familiarity with basic performance optimization (bundle size, lazy loading)
• Proficiency in English at an Upper-Intermediate level (B2) or higher

Nice to have

• Experience designing scalable and resilient systems
• Knowledge of concurrency management and idempotency control