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Harini User

@harini06

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Java Full Stack developer with strong backend and mainframe experience.

India

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What I'm looking for

I am seeking a mid-level engineering role where I can build secure backend systems and scalable full-stack applications, contribute to CI/CD practices, and grow in cloud and distributed systems within a collaborative team.

I am a Java Full Stack developer with 3+ years of professional experience building scalable backend services and end-to-end web applications, and prior enterprise mainframe experience in the financial domain. I design RESTful APIs and microservice-aligned systems using Spring Boot, build responsive front ends with HTML/CSS/JavaScript and React, and apply CI/CD practices with Docker and Jenkins to ensure reproducible deployments.

At Barclays I led mainframe projects focused on cryptographic key lifecycle and DB2-based repositories, automating key renewal and large-scale key-version migrations that dramatically reduced lookup times and operational dependencies. I hold IBM professional certificates in Java and Full Stack development and bring a pragmatic, results-driven approach to delivering secure, high-performance solutions.

Experience

Work history, roles, and key accomplishments

Current

Java Full Stack Developer

Current

Barclays

Aug 2022 - Present (3 years 10 months)

Developed DB2-based enterprise key repository and automated COBOL–JCL workflows, reducing lookup time by 90% and cutting dependency on the development team by 80%; led cryptographic key renewals to ensure ORAC compliance and accelerate decommissioning of outdated keys.

COBOL JCL Jenkins Java Spring Boot Docker REST APIs CI CD

Software Developer (Projects)

Personal Projects

Built a Smart Clinic Management System with Java Spring Boot and hybrid MySQL/MongoDB architecture that improved record lookup performance and automated scheduling to increase efficiency by ~40%; developed a cloud-hosted Car Dealership Review Platform using Django, Docker, and IBM Cloud to reduce deployment time by ~30%.