Java Developer

Senior Java Developer

Key Responsibilities

• Design, develop, and enhance backend services using

  Java (Java 17 or higher)

  following best coding practices and performance standards.
• Break down monolithic applications and architect robust, scalable

  distributed systems

  using microservices design principles.
• Implement highly optimized, reliable, and maintainable code using advanced core Java concepts such as

  concurrency, JVM internals, collections, and data structures

  .
• Apply

  Object-Oriented Programming principles

  and enterprise design patterns to build clean, modular, and extensible solutions.
• Develop and maintain

  RESTful APIs

  , ensuring secure integrations using

  OAuth 2.0

  authentication and authorization flows.
• Work extensively within

  Office 365 / Microsoft 365 environments

  , building reliable integrations using

  Microsoft Graph API

  .
• Use

  Graph Explorer

  for validating and testing various Graph API queries and endpoints.
• Understand and compare

  Graph API vs SharePoint REST API

  capabilities, limitations, and usage patterns.
• Implement intelligent

  throttling-handling and retry policies

  to ensure resilience in Microsoft Graph API integrations.
• Write comprehensive

  JUnit test cases

  to ensure code quality, coverage, and reliability.
• Work independently with end-to-end ownershipfrom requirement analysis, technical design, development, and testing to deployment.
• Participate in

  Agile development processes

  , including sprint planning, estimations, stand-ups, reviews, and retrospectives.
• Use version control systems such as

  Git or Bitbucket

  for collaborative development and code management.

Required Skills & Qualifications

• 5+ years

  of professional experience as a Java Developer.
• Strong experience in

  modern Java (Java 17+)

  along with deep knowledge of JVM internals, concurrency, multithreading, and advanced data structures.
• Proven experience in breaking monolithic applications into

  microservices-based distributed architectures

  .
• Solid understanding of

  Enterprise Architecture

  , design patterns, and scalable solution design.
• Hands-on experience with

  REST APIs

  , OAuth 2.0 flows, and cloud-based API integrations.
• Strong expertise in

  Microsoft Graph API

  , including testing via Graph Explorer, and understanding Graph API throttling & retry mechanisms.
• Experience with

  Office 365 / M365 environments

  and SharePoint REST API.
• Proficiency in writing robust

  JUnit

  unit tests.
• Hands-on experience with

  Agile methodologies

  and DevOps practices.
• Proficiency with

  Git/Bitbucket

  for version control.
• Excellent analytical, problem-solving, and debugging skills.
• Ability to take complete ownership of complex development tasks with minimal supervision.

Preferred Qualifications (Good to Have)

• Experience with cloud platforms (Azure/AWS/GCP).
• Knowledge of CI/CD pipelines and container technologies (Docker/Kubernetes).
• Familiarity with messaging queues, distributed caching, or event-driven architectures.

Soft Skills

• Strong communication and interpersonal skills.
• Ability to collaborate effectively with cross-functional teams.
• Proactive mindset with a strong sense of responsibility and ownership.
• Detail-oriented with a commitment to delivering high-quality solutions.