VARUN KUMAR

Senior Java Developer

https://www.opentalent.in/varun-kumar

Noida, indiaMember since June 10, 2025

Key Strengths

Strong foundational and advanced Java skills, including Core Java, Java 8, and extensive experience with the Spring ecosystem (Spring Boot, Spring Framework, Spring MVC, Spring Security).
Proven expertise in designing, developing, and maintaining RESTful APIs, with experience building over 100 APIs for enterprise-level applications.
Demonstrated ability to optimize system performance, evidenced by achievements like increasing application response speed by 25%, enhancing data retrieval by 60% with Redis Cache, and improving system performance by 70% through code refactoring.
Proficiency in DevOps practices and tools, including Git, Jenkins for CI/CD, and Docker/Kubernetes for containerization and orchestration, leading to reduced deployment failures and faster product releases.
Solid experience with database technologies such as PostgreSQL, MySQL, and Oracle SQL, coupled with skills in query optimization and caching strategies.
Exposure to full-stack development, including JavaScript and React, for building user interfaces.
Experience level (4 years) and breadth of technical skills align well with the requirements for a Senior Java Developer role, particularly in a microservices environment.

Cultural & Operational Fit

Cultural Fit Analysis

The psychometric test score of 0 indicates a critical concern regarding the candidate's cultural fit, specifically in areas such as work attitude, stress handling, and team collaboration. This score suggests a potential misalignment with organizational values and team dynamics, which is a major red flag for any role.

Soft Skills & Operational Fit

The candidate's resume indicates experience in collaboration with cross-functional teams and participation in code reviews. However, the psychometric test score of 0 raises significant concerns regarding logical reasoning, work attitude, stress handling, and team collaboration, which are critical for operational fit and effective teamwork in a senior role.

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Experience

Tata consultancy services

System engineer

December 1, 2021 – Present

Noida, India

Collabera Technologies Pvt Ltd

Java Developer

June 1, 2021 – December 1, 2021

Noida, India

Key Strengths

Strong foundational and advanced Java skills, including Core Java, Java 8, and extensive experience with the Spring ecosystem (Spring Boot, Spring Framework, Spring MVC, Spring Security).
Proven expertise in designing, developing, and maintaining RESTful APIs, with experience building over 100 APIs for enterprise-level applications.
Demonstrated ability to optimize system performance, evidenced by achievements like increasing application response speed by 25%, enhancing data retrieval by 60% with Redis Cache, and improving system performance by 70% through code refactoring.
Proficiency in DevOps practices and tools, including Git, Jenkins for CI/CD, and Docker/Kubernetes for containerization and orchestration, leading to reduced deployment failures and faster product releases.
Solid experience with database technologies such as PostgreSQL, MySQL, and Oracle SQL, coupled with skills in query optimization and caching strategies.
Exposure to full-stack development, including JavaScript and React, for building user interfaces.
Experience level (4 years) and breadth of technical skills align well with the requirements for a Senior Java Developer role, particularly in a microservices environment.

Cultural & Operational Fit

Cultural Fit Analysis

Soft Skills & Operational Fit