Headline

Backend Software Engineer | Java · Spring Boot · Microservices | Payments & Distributed Systems | AWS | Ex-Verizon, Comviva | Building PCI-DSS Compliant Systems at Scale

About

I build backend systems that move money reliably — at scale, under compliance pressure, with zero room for silent failure. Over the past 4+ years, I've worked across the full lifecycle of distributed payment systems: architecting greenfield microservices in Java 8 / Java 17 and Spring Boot, leading a PCI-DSS compliant CVV encryption initiative across 4 cross-functional teams, and engineering a transactional engine that processes 1M+ payments daily (credit card, PayPal, digital wallets) at 99% uptime using Resilience4j fault-tolerance patterns. I care as much about what happens after deployment as before it — I built a centralized ELK observability stack that cut incident detection time by 70% and resolution time by 50%, and I ship through Jenkins/Docker pipelines designed for zero-downtime releases. Core stack: Java, Spring Boot, Microservices, REST APIs, Hibernate/JPA, AWS (EC2, S3, Rekognition), Docker, Jenkins, ELK Stack, Resilience4j, Git, Agile Domain depth: Payments infrastructure, transaction monitoring, security/encryption (PCI-DSS), production observability Currently exploring backend/mid-senior engineering roles where reliability, security, and scale aren't afterthoughts — they're the job. 📩 medinimd00@gmail.com

Location

Bengaluru

AI stack

antigravity

codex

claudecode

Work experience

Engr ll - Software Development at Verizon, Aug 2023 - Sep 2025 · 2 yrs 2 mos, Bengaluru, 1. Led greenfield design and production deployment of scalable payment microservices (Java 17, Spring Boot, Maven) with full lifecycle ownership, from architecture through release. 2. Drove a PCI-DSS compliant CVV encryption (PIE) initiative across 4 cross-functional teams, securing sensitive cardholder data across a distributed payments ecosystem. 3. Built a transactional engine processing 1M+ payments/day (Credit Card, PayPal, Digital Wallets) at 99% uptime, using Resilience4j for idempotency and fault tolerance.

Senior Engineer at Comviva, Jan 2023 - May 2023 · 5 mos, Bengaluru, Karnataka, India, 1. I actively contributed to the development and enhancement of microservices-based applications for customer-rewards domain, utilizing the Spring Boot framework. This involved designing and implementing scalable and robust solutions to meet customer requirements. 2. Additionally, my proficiency in Hibernate and JPA has enabled me to efficiently manage data persistence, mapping objects to relational databases, and executing complex database queries. I have actively utilized Git for version control, collaborating with team members and effectively managing code repositories. 3. Transitioned all the legacy (monolithic) architecture microservices to production-ready microservices and contributed to the successful delivery from scratch starting from microservices / functionality design and development to production deployment and monitoring.

Engineer - Product Development at Comviva, Nov 2021 - Dec 2022 · 1 yr 2 mos, Bengaluru, Karnataka, India, As a Product Development Engineer, I have gained valuable experience working extensively with microservices architecture, utilizing my skills in Java, Spring Boot, Hibernate, JPA, and Git. In this role - 1. I am responsible for developing and maintaining high-performance and scalable microservices-based applications. 2. I have leveraged my expertise in Java to design and implement efficient and robust code for various microservices, ensuring their seamless integration and smooth operation. Spring Boot has been instrumental in simplifying the development process, allowing me to quickly build and deploy microservices with minimal configuration.

Engineer Trainee at Comviva, Jul 2021 - Oct 2021 · 4 mos, Bengaluru, Karnataka, India, As an Engineer Trainee, I gained hands-on experience in software development and testing, focusing on Linux scripting, Java programming, Agile methodologies, databases, and unit testing. I actively participated in the development and deployment of software solutions, utilizing my skills in Linux scripting and Java programming to create efficient and reliable code. I worked closely with cross-functional teams, following Agile methodologies to deliver high-quality software within tight deadlines. Additionally, I gained proficiency in database management and conducted rigorous unit testing to ensure software functionality and performance. Through my work, I demonstrated a strong aptitude for software development and testing, contributing to the successful delivery of reliable and robust software solutions.

Engineer Intern at DigiNxtHlt Technologies (Internship), Feb 2021 - Jun 2021 · 5 mos, Bengaluru, Karnataka, India, 1. Core Development: Architected and developed API modules using Python and AWS services (EC2, S3), enabling a user-friendly, scalable, secure Backend for the ECHO application (music therapy based on human emotions). 2. AWS Services: Implemented Image Recognition service using AWS Amazon Rekognition and API Gateway, improving the accuracy of the music therapy service by 99%, resulting in over 10,000 Android / iOS app downloads.

Education

Master of Computer Applications - MCA, Computer Applications, Siddaganga Institute of Technology

BCA, Computer Applications, Sree Siddaganga college of Arts, Science and Commerce