Suraj upadhyay
@surajupadhyay1
Full-stack developer building Spring Boot payment systems with encrypted transfers and exactly-once settlement.
IndiaWhat I'm looking for
On UPI Offline Mesh, I built a Spring Boot backend for offline UPI-style payments that settle when a bridge device regains internet. I secured payment packets with RSA-OAEP and AES-256-GCM encryption.
I implemented SHA-256 idempotency and optimistic locking to ensure exactly-once settlement, and verified the behavior with a concurrency test.
I also built a Java 17 packet analyzer that parses PCAP files, identifies applications from TLS SNI and HTTP Host headers, and classifies services. It supports rule-based blocking and writes filtered PCAP output.
As a Computer Science Mentor at APCS College of IT & Management, I teach programming and IT concepts to 100+ students across four batches. I’m seeking an entry-level Full-Stack, Backend, or Software Engineer role.
Experience
Work history, roles, and key accomplishments
Computer Science Mentor
APCS College of IT & Management
Mar 2024 - Present (2 years 7 months)
Instructed 100+ students across 4 batches in Computer Fundamentals, MS Office, Internet Applications, DBMS, SDLC, Web Development, and Computer Networking. Taught C, C++, and Java fundamentals and managed the computer lab for 6 months.
Education
Degrees, certifications, and relevant coursework
D. Y. Patil University, Pune
Master of Computer Applications, Computer Applications
Pursuing Master of Computer Applications (MCA) at D. Y. Patil University, Pune.
Veer Bahadur Singh Purvanchal University
Bachelor of Computer Applications, Computer Applications
Grade: 8.85/10
Bachelor of Computer Applications (BCA) with CGPA 8.85/10 from Veer Bahadur Singh Purvanchal University, completed in 2026.
UP Board
Intermediate, General Studies
Grade: 70%
Completed Intermediate (12th) with 70% from UP Board in 2023.
UP Board
High School, General Studies
Grade: 85%
Completed High School (10th) with 85% from UP Board in 2021.
Availability
Location
IndiaAuthorized to work in
Portfolio
suraj-upadhyay-portfolio.netlify.appSalary expectations
Social media
Job categories
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