Back to SearchSenior Java Full-Stack Developer (React, AWS)
Remote in Argentina
Java, Consultancy
Looking for something else?
Find a vacancy that works for you. Send us your CV to receive a personalized offer.
Find me a job
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