Senior Java Software Engineer

Ajackus; India; On-site; INR 1,500,000 - 2,000,000; Full time

Job summary

An innovative technology firm in India is looking for a highly skilled Senior Backend Java Developer with at least 5 years of experience. The ideal candidate should have strong proficiency in Java and the Spring framework and be adept at developing robust backend systems. Familiarity with testing frameworks and AI-assisted development tools is essential, along with experience in cloud platforms like AWS. This role involves designing scalable backend services, collaborating with cross-functional teams, and troubleshooting production issues.

Qualifications

• 5+ years of hands-on experience in backend development.
• Strong expertise in Java and Spring framework.
• Proficiency in SQL and unit testing frameworks.

Responsibilities

• Design, build, and maintain scalable backend services using Java.
• Develop unit and integration tests using JUnit or Mockito.
• Collaborate with cross-functional teams to deliver features.
• Write and optimize SQL queries for high-performance data operations.
• Leverage AI-assisted tools to enhance coding efficiency.
• Participate in code reviews and mentor junior developers.
• Troubleshoot and resolve complex production issues.
• Contribute to technical documentation and Agile processes.

Skills

Java

Spring

SQL

JUnit

Mockito

AI-assisted development tools

DevOps practices

AWS

Job description

Overview

We are seeking a highly skilled Senior Backend Java Developer with 5 or more years of hands-on experience in designing, developing, and maintaining robust backend systems. The ideal candidate will have strong expertise in Java, Spring, SQL, and unit testing frameworks such as JUnit or Mockito. Familiarity with AI-assisted development tools (like Claude Code, Cursor, GitHub Copilot) is essential. Experience with DevOps practices and cloud platforms like AWS is a plus.

Responsibilities

• Design, build, and maintain scalable and secure backend services using Java and the Spring framework.
• Develop and execute unit and integration tests using JUnit, Mockito, or equivalent frameworks.
• Collaborate with frontend engineers, DevOps, and cross-functional teams to deliver complete and reliable features.
• Write and optimize SQL queries and manage relational databases to ensure high-performance data operations.
• Leverage AI-assisted coding tools (e.g., Claude, Cursor, GitHub Copilot) to boost productivity and maintain code quality.
• Participate in code reviews, ensure adherence to best practices, and mentor junior developers as needed.
• Troubleshoot, diagnose, and resolve complex issues in production and staging environments.
• Contribute to technical documentation, architecture discussions, and Agile development processes (e.g., sprint planning, retrospectives).

Qualifications

• Strong proficiency in Java and object-oriented programming concepts.
• Hands-on experience with Spring / Spring Boot for building RESTful APIs and backend services.
• Proficiency in testing frameworks such as JUnit, Mockito, or equivalent.
• Solid experience in writing and optimizing SQL queries for relational databases (e.g., PostgreSQL, MySQL).
• Experience using AI-assisted coding tools (e.g., ClaudeCode, Cursor, GitHub Copilot) in a production environment.
• Experience in building features using LLM APIs, AI workflows, or chatbots, with the ability to explain the architecture and key technical challenges involved.
• Experience in deploying AI-integrated services on AWS, including the deployment approach and services used.
• Understanding of DevOps tools and practices (CI/CD, Docker, etc.)
• Experience with AWS services (e.g., EC2, RDS, S3, Lambda)
• Exposure to containerization and cloud-native development