I am a Full Stack Developer with over 5 years of experience building scalable web applications using Java, Spring Boot, Angular, and Docker. I specialize in modernizing legacy systems and creating enterprise solutions with a strong focus on clean code, security, and agile teamwork. I am passionate about delivering high-quality code and collaborating effectively within distributed teams. Throughout my career, I have successfully delivered projects that improved system performance and user experience, earning a 45% salary hike due to exceptional performance and rapid learning. I enjoy solving complex backend challenges and continuously expanding my technical expertise to drive business growth and innovation.

Ajay K Kumar

I am a Full Stack Developer with over 5 years of experience building scalable web applications using Java, Spring Boot, Angular, and Docker. I specialize in modernizing legacy systems and creating enterprise solutions with a strong focus on clean code, security, and agile teamwork. I am passionate about delivering high-quality code and collaborating effectively within distributed teams. Throughout my career, I have successfully delivered projects that improved system performance and user experience, earning a 45% salary hike due to exceptional performance and rapid learning. I enjoy solving complex backend challenges and continuously expanding my technical expertise to drive business growth and innovation.

Available to hire

I am a Full Stack Developer with over 5 years of experience building scalable web applications using Java, Spring Boot, Angular, and Docker. I specialize in modernizing legacy systems and creating enterprise solutions with a strong focus on clean code, security, and agile teamwork. I am passionate about delivering high-quality code and collaborating effectively within distributed teams.

Throughout my career, I have successfully delivered projects that improved system performance and user experience, earning a 45% salary hike due to exceptional performance and rapid learning. I enjoy solving complex backend challenges and continuously expanding my technical expertise to drive business growth and innovation.

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Experience Level

Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate

Language

English
Advanced
Hindi
Advanced

Work Experience

Software Engineer at Freelancer on Upwork
May 1, 2024 - Present
Built Spring Boot microservices that reduced backend response time by 35%, fixed payment gateway issues increasing transactions and revenue by 76%, and managed client requirements ensuring 100% on-time delivery. Resolved API bottlenecks enhancing system stability and uptime. Authored client-facing documentation to improve transparency and trust in remote freelancing.
Software Engineer at NXPRO (Next Generation Professionals), Chandigarh, INDIA
May 31, 2022 - August 28, 2025
Integrated Authorize.net and PayPal to streamline transactions for 60+ daily users. Developed automated recurring billing boosting membership sales by 55% in 2 months. Integrated Google Analytics into the admin dashboard to increase campaign effectiveness by 30%. Maintained over 85% unit test coverage and applied secure coding practices with code reviews and pair programming.
Junior Software Developer at Lucrortech Inc., Chandigarh, INDIA
December 31, 2020 - August 28, 2025
Contributed to Java-based backend development in an Agile environment, delivered features on time across sprints, and participated in sprint planning and retrospectives. Conducted peer code reviews improving performance and maintainability. Designed and tested REST APIs, reducing QA cycles by 20% through early bottleneck detection.

Education

Graduate Certificate in DevOps for Cloud Computing at Lambton College - Toronto, Ontario, Canada
September 1, 2022 - April 30, 2024
Bachelor of Technology in Computer Science at Deenbandhu Chotu Ram University of Science and Technology - Murthal, Haryana, India
August 1, 2015 - May 31, 2019

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Financial Services, Professional Services

Experience Level

Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate