Senior Full Stack Java - React Developer

Encora10

Costa Rica (Latin America) Remote permanent

Posted: February 27, 2026

Required Skills

Job Description

Important Information

Location: Costa Rica

Work Mode: Hybrid

Job Summary

As a Senior Full Stack Java - React Developer (19968), you will be responsible for designing, developing, and maintaining high-quality software solutions. You will collaborate with cross-functional teams to understand business requirements and translate them into scalable and efficient software applications. Your role will involve leading technical projects, mentoring junior engineers, and continuously improving software development practices to ensure the delivery of robust and reliable software systems. 

Responsibilities and Duties

• Design and develop end-to-end full-stack solutions using React, TypeScript, Java, and Spring Boot, ensuring scalability, performance, and maintainability

• Architect and implement RESTful APIs and real-time data integrations while optimizing backend performance, caching strategies, and system reliability

• Build modern, responsive, and highly interactive user interfaces, integrating streaming data, search capabilities, and advanced filtering experiences

• Collaborate in code reviews, CI/CD processes, and cloud-native deployments, contributing to high engineering standards and continuous delivery practices

Qualifications and Skills

• 5+ years of full-stack development experience including strong frontend and backend expertise

• Advanced proficiency in React, TypeScript, and modern JavaScript (ES6+), with strong CSS skills (Flexbox, Grid, responsive design)

• Experience with UI frameworks such as MUI, Tailwind, or Ant Design, and frontend testing frameworks

• Strong backend expertise in Java and Spring Boot, designing and building secure, scalable RESTful APIs

• Solid experience with relational databases (MySQL, PostgreSQL) and NoSQL solutions (MongoDB, Redis)

• Strong understanding of system design principles, caching strategies, and performance optimization in distributed systems

• Experience working with message brokers such as Kafka and implementing asynchronous communication patterns

• Hands-on experience with search technologies such as Elasticsearch and building advanced search/filtering interfaces

• Experience with cloud-native environments (AWS preferred; GCP, Azure, or OCI acceptable), Kubernetes, CI/CD pipelines, and GitHub Actions

• Nice to have: experience building AI-powered applications (Spring AI, LLM integrations, RAG architectures, vector search), Node.js for tooling or APIs, and working knowledge of Python

About Encora

Encora is a global company that offers Software and Digital Engineering solutions. Our practices include Cloud Services, Product Engineering & Application Modernization, Data & Analytics, Digital Experience & Design Services, DevSecOps, Cybersecurity, Quality Engineering, AI & LLM Engineering, among others. 

At Encora, we hire professionals based solely on their skills and do not discriminate based on age, disability, religion, gender, sexual orientation, socioeconomic status, or nationality.

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