[Remote] Full Stack Developer - Level III (Remote)

Note: The job is a remote job and is open to candidates in USA. Confiz is a company focused on innovative enterprise projects and products, seeking a Senior Full Stack Software Engineer with expertise in Java, Spring Boot, React, and AWS. In this role, you will design, develop, and maintain scalable enterprise applications for a Fortune 500 retail client while collaborating with cross-functional teams in a fast-paced environment.ResponsibilitiesDesign, develop, and maintain scalable full-stack applications using Java, Spring Boot, React, and modern frameworksBuild and enhance RESTful APIs, backend services, and microservices architecturesDevelop responsive and dynamic web interfaces using ReactWork with SQL and NoSQL databases such as PostgreSQL and DynamoDBDesign and maintain AWS-based solutions using services such as S3, Lambda, RDS, and EKSImplement and maintain CI/CD pipelines using GitLab CI/CD, GitHub Actions, Terraform, or similar toolsDevelop and optimize Kafka/event-driven messaging solutions using Kafka, SQS, or RabbitMQPerform code reviews, testing, debugging, monitoring, and production support activitiesMonitor system performance, troubleshoot issues, and support incident resolutionCollaborate with engineering teams and stakeholders in an agile environmentMentor junior engineers and contribute to engineering best practicesSkillsCandidates must currently be living in Costa Rica. Applications outside Costa Rica will be automatically rejected5+ years of professional experience in full-stack software developmentStrong expertise in Java, Spring Boot, React, and REST APIsHands-on experience with AWS cloud services and cloud-native environmentsExperience with microservices, distributed systems, and scalable architecture designStrong understanding of CI/CD pipelines, infrastructure automation, and TerraformExperience with Kafka, SQS, RabbitMQ, or other messaging technologiesExperience with PostgreSQL, DynamoDB, and database optimizationKnowledge of monitoring and logging tools such as Splunk or New RelicStrong debugging, analytical, communication, and problem-solving skillsBachelor's or Master's degree in Computer Science, Engineering, or equivalent practical experienceCompany OverviewConfiz is a full service technology company, committed to enabling people and verticals by producing high performance industry solutions. It is a sub-organization of Systems. It was founded in 2005, and is headquartered in Lahore, Punjab, PAK, with a workforce of 501-1000 employees. Its website is http://www.confiz.com/.Company H1B SponsorshipConfiz has a track record of offering H1B sponsorships, with 1 in 2026, 10 in 2025, 13 in 2024, 11 in 2023, 12 in 2022, 13 in 2021, 20 in 2020. Please note that this does not guarantee sponsorship for this specific role.