Senior Java Developer (Temporary Contract) (Xico)

About You

You are a Senior Java Backend Engineer with strong experience building scalable, high-performance backend systems within distributed and cloud-native environments. You are passionate about designing reliable architectures, improving platform resilience, and delivering secure, maintainable solutions that support high-volume transactional systems. You bring a proactive and solution-oriented mindset, capable of working across complex microservices ecosystems while balancing scalability, performance, and operational excellence. You are comfortable navigating modern backend architectures, containerized environments, observability practices, and cloud infrastructure while collaborating closely with engineering and product teams. You thrive in environments where ownership, technical leadership, and continuous improvement are highly valued. You are adaptable, detail-oriented, and capable of mentoring engineers, driving technical decisions, and contributing to architecture and platform evolution initiatives.

Competencies

• Bachelor's Degree in Computer Science, Software Engineering, Computer Engineering, or a related field is desired, or equivalent professional experience.
• 6+ years of professional experience in Java backend development.
• 2+ years of hands-on experience with Spring Boot and Spring WebFlux.
• Strong experience designing and maintaining microservices architectures and distributed systems.
• Solid understanding and practical application of Hexagonal Architecture (Ports & Adapters).
• Proven experience building and optimizing backend applications in high-throughput, low-latency environments.
• Experience with relational and non-relational databases such as PostgreSQL, MySQL, or DynamoDB.
• Familiarity with distributed caching technologies such as Redis or Memcached.
• Hands-on experience with Azure cloud services, including AKS, App Service, Application Gateway, and Storage Account.
• Strong experience with Docker and Kubernetes for containerization and orchestration.
• Exposure to CI/CD practices and tools such as Git, GitHub Actions, Jenkins, or Terraform.
• Solid understanding of secure coding practices, authentication flows, and encryption fundamentals.
• Experience implementing monitoring and observability solutions such as Datadog, Prometheus, or Grafana.
• Experience working with SaaS platforms or high-volume transactional systems such as eCommerce or fintech platforms.
• Experience with Kafka, GraphQL, gRPC, or Elasticsearch (Nice to have).
• 2+ years of experience mentoring engineers, leading initiatives, or owning critical services.
• Strong communication skills and advanced English proficiency for direct collaboration with US-based teams and stakeholders.

Responsibilities

• Design and develop scalable, fault-tolerant backend services following Microservices and Hexagonal Architecture principles.
• Deploy and manage containerized applications on Azure Kubernetes Service (AKS) using Docker and Azure-native infrastructure.
• Collaborate with Product and Engineering teams to translate business requirements into scalable technical solutions.
• Create architecture documentation, estimations, and user stories that support Agile delivery processes.
• Ensure platform performance, security, reliability, and SLA compliance through engineering best practices.
• Mentor and guide engineers while promoting ownership, quality, and technical excellence.
• Lead and participate in code reviews to ensure scalability, maintainability, and adherence to engineering standards.
• Contribute to observability, incident response, and continuous platform improvement initiatives.
• Influence technical roadmaps and contribute to architecture, tooling, and platform decisions.
• Support operational excellence initiatives across backend systems and cloud environments.

Qualifications

• Strong experience with Java and Spring Boot.
• Experience with Microservices and Hexagonal Architecture.
• Hands-on experience with Azure cloud services (AKS, App Service, Application Gateway, and Storage Account).
• Advanced English proficiency.