Full Stack Developer - Level III (Remote)
COSTA RICA ONLY — Candidates must currently be living in Costa Rica. Applications outside Costa Rica will be automatically rejected. We are seeking a Senior Full Stack Software Engineer with strong expertise in Java, Spring Boot, React, AWS, and distributed systems technologies. In this role, you will design, develop, and maintain scalable, secure, and high-performance enterprise applications for a Fortune 500 retail client. You will contribute to modern web applications, backend microservices, cloud-native solutions, and event-driven architectures while collaborating with cross-functional teams in a fast-paced environment.
Responsibilities
- Design, develop, and maintain scalable full-stack applications using Java, Spring Boot, React, and modern frameworks
- Build and enhance RESTful APIs, backend services, and microservices architectures
- Develop responsive and dynamic web interfaces using React
- Work with SQL and NoSQL databases such as PostgreSQL and DynamoDB
- Design and maintain AWS-based solutions using services such as S3, Lambda, RDS, and EKS
- Implement and maintain CI/CD pipelines using GitLab CI/CD, GitHub Actions, Terraform, or similar tools
- Develop and optimize Kafka/event-driven messaging solutions using Kafka, SQS, or RabbitMQ
- Perform code reviews, testing, debugging, monitoring, and production support activities
- Monitor system performance, troubleshoot issues, and support incident resolution
- Collaborate with engineering teams and stakeholders in an agile environment
- Mentor junior engineers and contribute to engineering best practices
Skills
- 5+ years of professional experience in full-stack software development
- Strong expertise in Java, Spring Boot, React, and REST APIs
- Hands-on experience with AWS cloud services and cloud-native environments
- Experience with microservices, distributed systems, and scalable architecture design
- Strong understanding of CI/CD pipelines, infrastructure automation, and Terraform
- Experience with Kafka, SQS, RabbitMQ, or other messaging technologies
- Experience with PostgreSQL, DynamoDB, and database optimization
- Knowledge of monitoring and logging tools such as Splunk or New Relic
- Strong debugging, analytical, communication, and problem-solving skills
Education: Bachelor’s or Master’s degree in Computer Science, Engineering, or equivalent practical experience We have a global team of amazing individuals working on highly innovative enterprise projects & products. Our customer base includes Fortune 100 retail and CPG companies, leading store chains, fast growth fintech, and multiple Silicon Valley startups. What makes Confiz stand out is our focus on processes and culture. Confiz is ISO 9001:2015 (QMS), ISO 27001:2022 (ISMS), ISO 20000-1:2018 (ITSM) and ISO 14001:2015 (EMS) Certified. We have a vibrant culture of learning via collaboration and making workplace fun. People who work with us work with cutting-edge technologies while contributing success to the company as well as to themselves. To know more about Confiz Limited, visit https://www.linkedin.com/company/confiz