Senior Backend Developer - Java (Work from Home)

Responsibilities

• Develop, enhance, and maintain backend services and APIs using Java 21, Spring Framework 5/6, and Spring Boot 3/4, following industry best practices.
• Design, implement, and document RESTful APIs, ensuring reliable integration with downstream and upstream systems.
• Build and maintain event‑driven and streaming solutions using Apache Kafka, including Kafka Streams for real‑time data processing and Kafka Connect for system integration.
• Ensure service interoperability and standardization by implementing TMF Forum OpenAPI specifications for service, data, and process modeling.
• Work extensively with containerized applications, leveraging Docker and deploying to OpenShift platforms in cloud‑native environments.
• Design, develop, and optimize database schemas and queries using PostgreSQL, including performance tuning and index optimization.
• Deploy and manage applications in Google Cloud Platform (GCP), utilizing Cloud SQL and aligning with cloud security and resilience best practices.
• Apply Secure Software Development Lifecycle (SSDLC) practices to produce clean, maintainable, scalable, and secure code.
• Implement automated testing strategies, including unit tests, integration tests, and service‑level testing, to ensure reliability and quality of deliverables.
• Participate actively in Agile delivery practices, including sprint planning, daily stand‑ups, backlog refinement, reviews, and retrospectives.
• Troubleshoot, diagnose, and optimize application and platform performance, including messaging throughput, database performance, and resource utilization.
• Monitor and support application observability and operational health, using tools such as ElasticSearch, Grafana, Dynatrace, and platform‑native monitoring solutions.
• Collaborate closely with cross‑functional teams, including architecture, QA, platform, and operations, to ensure successful end‑to‑end service delivery.

Core Competencies

• Java & Spring‑Based Service Development (5+ years): Strong experience building, validating, and maintaining enterprise backend services and RESTful APIs.
• Event‑Driven Architecture & Messaging (5+ years): Proven ability to design, test, and troubleshoot real‑time event processing, message reliability, and integration workflows using Apache Kafka and Kafka Streams.
• Microservices & Containerization (5+ years): Hands‑on experience with containerized service deployment using Docker, OpenShift, and Kafka.
• Database Expertise (5+ years): Experience with Oracle PL/SQL, PostgreSQL, and NoSQL, including data validation, performance tuning, and database behavior across integrated services.
• TMF Forum Standards (5+ years): Ensure compliance with TMF OpenAPI standards for service, data, and process modeling in telecom ecosystems.

Complementary Competencies

• CI/CD & Test Automation
  • Experience with Jenkins and GitLab CI to automate build, test, and deployment pipelines for backend services.
  • Ability to integrate service‑level and integration tests into CI/CD workflows to ensure early defect detection.
• Observability & Service Monitoring
  • Hands‑on experience with ElasticSearch, Grafana, and Dynatrace (or equivalents) to monitor service health.
  • Ability to use logs, metrics, and traces to validate service behavior, support root‑cause analysis, and improve reliability.
• Event Streaming & Messaging (Kafka)
  • Advanced experience with Apache Kafka, including topic design, producers/consumers, and event flow validation.
  • Exposure to Kafka Streams and Kafka Connect for real‑time processing and system integration.
• Cloud & Platform Awareness
  • Working knowledge of Google Cloud Platform (GCP), including managed services such as Cloud SQL.
  • General understanding of AWS or Azure concepts and cloud‑native service deployment models.
• Service Testing & API Validation
  • Strong experience with JUnit and service‑level testing frameworks for unit, integration, and contract testing.
  • Proficiency with Swagger / OpenAPI for API documentation, validation, and standards compliance (including TMF OpenAPI).
• Containerization & Deployment Platforms
  • Experience deploying and validating services using Docker and OpenShift.
  • Foundational understanding of Kubernetes concepts as they relate to service scalability, resiliency, and testing.

Qualifications

• University degree in Computer Science, Software Engineering, or other relevant discipline, or an equivalent combination of education and experience.

Work Conditions

• Work Schedule: Mid Shift (4:00 PM – 1:00 AM Manila time)