Open to opportunities

H K

@hk04

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Full‑stack Java developer and UX/UI designer driving secure, scalable products.

United States

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What I'm looking for

I seek a role combining backend engineering and UX collaboration where I can build secure, scalable systems, mentor teams, and deliver measurable product impact.

I am a Full‑Stack Java developer and UX/UI designer with strong experience building secure, scalable web applications and designing engaging user experiences. I combine backend expertise in Java, Spring Boot, and databases with front-end skills in React and Figma to deliver end‑to‑end solutions.

At Infosys I led backend development of a vulnerability detection platform, built 10+ REST APIs, optimized MongoDB models and microservices to boost throughput by 50% and reduce query times by 30%, and integrated OAuth and third‑party security datasets. I also developed Java-based analytical JARs and Spring Boot APIs during my graduate project at NJIT.

As a UX/UI designer I craft high‑fidelity prototypes and user flows in Figma, currently focusing on playful, user-friendly interfaces for children in the MEDKids app. I prioritize secure, maintainable architectures, measurable impact, and collaborative problem solving.

Experience

Work history, roles, and key accomplishments

Current

UX/UI Designer

Current

Rebecca Everlene

Aug 2025 - Present (4 months)

Designing high-fidelity Figma prototypes and UX flows for the MEDKids app, focusing on game pages and recipe interfaces to create engaging, child-friendly experiences.

Figma UX Design User Flows HTML CSS Accessibility Interaction Design

Java Backend Developer

New Jersey Institute of Technology

Sep 2024 - May 2025 (8 months)

Developed Spring Boot APIs and Java JARs integrated with Oracle DB and a React frontend to manage financial operations and perform statistical analysis, improving data delivery and user experience.

Java Spring Boot Oracle React JSP REST APIs Apex SQL JAR Packaging

Specialist Programmer

Infosys

Mar 2022 - Dec 2023 (1 year 9 months)

Led backend development of a vulnerability detection platform using Spring Boot and MongoDB, creating 10+ REST APIs and microservices that detected 200+ high-risk vulnerabilities and improved throughput by 50%.

Java Spring Boot MongoDB REST APIs Microservices BigQuery Performance Optimization

Specialist Programmer

Infosys

Jan 2021 - Feb 2022 (1 year 1 month)

Modernized legacy systems and implemented Spring Boot services with MongoDB and Oracle integrations, delivering multiple product APIs across phases and supporting testing and production issue resolution.

Java Spring Boot MongoDB Oracle API Design Unit Testing Junit Mockito

Specialist System Engineer

Infosys

Jul 2019 - Jan 2021 (1 year 6 months)

Refactored Java Struts backend services and built REST APIs to integrate with React frontends for six products, increasing test coverage with JUnit and Mockito to enhance reliability.

Java REST APIs Junit Mockito Refactoring Performance Tuning