**Dhairya S Gajjar**
551.301.4323 | Bay Area, CA
dhairyagajjar4008@gmail.com
linkedin.com/in/dhairyagajjar190 | github.com/dhairyag9622

**Software Engineer specializing in High-Performance Software Systems**

### TECHNICAL SKILLS
**Proficient:** Java, Spring Framework (Boot, MVC, AOP, JPA), Hibernate, Oracle SQL Developer, Jenkins, JUnit, TestNG, Postman, Splunk, Humio, Mirantis Kubernetes Engine, Angular, DataGrip, IntelliJ, Maven, Triton for Docker, Git, GitHub, Bitbucket, Jira, GitHub Copilot, ChatGPT-4, AWS, Kubernetes, Node.js, JavaScript
**Exposure:** React, Python, C++, C, C#

### WORK EXPERIENCE
**Visa Inc (Contract)** | Software Engineer | Foster City, CA (Hybrid) | Jan 2023 - Jan 2024
- Spearheaded creation and documentation of unified API for Click to Pay and Visa Direct, streamlining user account management.
- Integrated Click to Pay with Metadata Services API, providing real-time enrollment updates to issuers.
- Co-developed 'SRC Orchestrator,' consolidating 7 API calls to reduce network latency and improve checkout performance.
- Reduced payment credential delivery time by 54% (650ms to <350ms) via API optimization, asynchronous calls, and caching.
- Resolved critical Visa RestTemplate bugs by designing a custom framework with MultiMap, saving 2 months of debugging.
- Collaborated with international teams to implement biometrics for EU pilot release of Click to Pay.
- Pioneered end-to-end integration tests using TestNG for 7 APIs, ensuring system reliability.
- Achieved 95%+ code coverage via rigorous unit testing with JUnit & Mockito.

**Marlabs LLC** | Software Engineer | Piscataway, NJ (Remote) | Mar 2022 - Jan 2023
- Developed RESTful web services in Java/Spring Boot for secure retrieval of portfolios across 6,000+ merchants.
- Improved legacy checkout system performance, reducing API calls and boosting conversion rates by 10%.

**Softagz Technologies** | Software Engineer | Mumbai, India | Aug 2018 - Nov 2019
- Engineered web services accessed by 5M+ users worldwide using Node.js and JavaScript.

### EDUCATION
**Master of Science in Computer Science**
Stevens Institute of Technology | Jan 2022

**Bachelor of Engineering in Information Technology**
University of Mumbai | Sep 2018

### PROJECT WORK
**University Marketplace** | Software Engineer | Mar 2021 - Jan 2022
- Built eCommerce solution for students to buy/sell used books via Stevens Institute portal using Java, Spring, Hibernate, and microservices.
- Increased university revenue by 35%.

*(Formatted for clarity and conciseness while preserving key details.)*

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