Vamshi Adi

Senior Software Engineer | Backend & Distributed Systems | Go, TCP, Cloud | Payments & Platform Engineering

Summary

Backend and platform engineer specializing in distributed systems, high-performance services, and secure infrastructure.

Currently building payment systems at American Express, focused on low-latency transaction processing, system reliability, and large-scale automation platforms.

Core experience in Go, cloud-native architectures, and networking systems including TCP-based services, reverse proxies, and distributed storage.

Strong interest in backend systems, infrastructure, and performance-critical applications.

Skills

Programming Languages

Go, Java, JavaScript, Python, TypeScript, SQL

Databases

CassandraDB, DynamoDB, MySQL, PostgreSQL

Backend Frameworks

Vert.x, Gin, Chi, FastApi, Flask, Node.js

Tools

Docker, AWS, Jenkins, Git

Experience

American Express

Apr 2024 - Present · Phoenix, Arizona, United States

Senior Software Engineer

Contract · Hybrid

  • Led development of TestX, a unified automation framework using Cucumber and TestNG, enabling parallel, tag-driven execution across multiple payment systems (AUTH, EDC, MultiRail, Token, Safekey, Fusion).
  • Implemented trace-driven validation workflows with multi-hop (Hop2/Hop4) assertions and retry mechanisms, reducing regression cycles to <30 minutes.
  • Architected Cognix, a high-performance TCP load balancer in Go, supporting low-latency, high-throughput transaction processing under high concurrent load.
  • Contributed to modernizing a mainframe-based authorization network using Java and Vert.x, improving performance, reliability, and traceability.

Skills: Go · Java · Vert.x · Cucumber · TestNG · TCP/IP · Distributed Systems · Test Driven Development

TechnoVal Alliance

Mar 2023 - Apr 2024 · Phoenix, Arizona, United States

Senior Software Engineer

Client: Vitel Global

  • Engineered backend services in Go using an AWS serverless stack (Lambda, DynamoDB) for scalable, event-driven processing.
  • Designed and implemented custom authorization services, improving security posture and streamlining access control workflows.
  • Developed dynamic UI components using React, enabling seamless integration with backend systems.
  • Conducted feasibility analysis for migrating a serverless backend to GCP, evaluating scalability and performance tradeoffs.

Skills: Go · AWS Lambda · DynamoDB · React · GCP · IAM · Serverless

Borderfree Technology

Apr 2020 - Aug 2021 · 1 yr 5 mos · Hyderabad, India

Lead Software Engineer

Jan 2021 – Aug 2021 · 8 mos

  • Led a team of 6 engineers to design and deliver a scalable B2B platform using ReactJS and Go in a serverless architecture, improving performance and deployment efficiency.
  • Built and launched React Native applications across iOS and Android, driving successful app store releases.
  • Developed SDK integrations, including a TV SDK for Sling/Dish Networks, enhancing streaming capabilities.
  • Evaluated GraphQL and gRPC integrations through proofs of concept to improve backend performance and scalability.

Skills: React.js · AWS · AWS Lambda · DynamoDB · Go · Node.js · Systems Design · React Native

Senior Software Engineer

Apr 2020 – Dec 2020 · 9 mos

  • Built a dynamic wallet application using React Native with backend REST APIs in Go.
  • Designed and implemented custom authorization services integrated into AWS serverless workflows.

Skills: React.js · AWS · AWS Lambda · DynamoDB · Go · Node.js · API Gateways · Serverless

NewsPlus

Oct 2018 – Mar 2020 · 1 yr 6 mos · Hyderabad, India

Senior Software Engineer

  • Built a real-time news clustering system using Python microservices, powering feed generation, ranking, and notification systems.
  • Improved user engagement by 400% through personalized content delivery and optimized notification pipelines using Firebase.
  • Designed and deployed scalable clustering pipelines using K-Means, DBSCAN, and NLP techniques for large-scale content processing.

Skills: Python · NLP · Machine Learning · Microservices · Flask · AWS · GCP

Kony, Inc.

Dec 2014 – Sep 2018 · 3 yrs 10 mos · Hyderabad, India

Senior Software Engineer

Jun 2017 – Sep 2018 · 1 yr 4 mos

  • Owned authentication systems including OAuth 2.0 and multi-session token management across multiple products.
  • Developed cross-cloud file transfer frameworks and support solutions for enterprise systems.
  • Received multiple excellence awards for product delivery and customer impact.

Skills: Java · Node.js · REST APIs · OAuth · SSO · SDKs · Mobile Applications

Software Development Engineer

Jun 2015 – Jun 2017 · 2 yrs 1 mo

  • Developed Object Services, a REST-based SDK supporting OData filters and ORM operations, improving backend data handling and system flexibility.
  • Enhanced authentication workflows by implementing OAuth 2.0 login, on-device token management, and multi-session support.
  • Resolved critical release blockers and improved system stability, earning Individual and Team Excellence Awards.

Skills: Java · Node.js · REST APIs · PostgreSQL · Jenkins · JavaScript

Associate Software Developer · Intern

Dec 2014 – Jun 2015 · 7 mos

  • Contributed to application foundation systems supporting dynamic app generation, synchronization, and multi-tenant cloud architecture.
  • Built and maintained features for app generation and cloud infrastructure, improving performance and scalability.

Skills: Java · Node.js · JUnit · Maven · JavaScript

Co-Founder

CustomBuild · Self-employed

Dec 2012 – Jun 2014 · 1 yr 7 mos · Hyderabad, India

  • Developed and deployed projects for clients in Healthcare and Academic domains.
  • Designed prototypes and proof of concepts to determine the viability and outreach in the market.
  • Used Python, Django, Node.js, MySQL, and C# to build full-stack and IoT solutions, deployed on-premise.

Skills: Node.js · MongoDB · Python · MySQL · C#

Education

Master of Science in Data Science · 2021 - 2022

University at Buffalo · Buffalo, NY

Bachelor of Technology in Computer Science · 2011 - 2015

BV Raju Institute of Technology (BVRIT) · Hyderabad, India

Projects

Warforged Homelab Platform

Docker, Traefik, Cloudflare, Linux, Networking

Designed and operated a self-hosted platform with secure ingress, network isolation, NFS over ZFS-backed storage supporting 40TB+ of data, and layered security controls.

Smart Wheelchair with Patient Monitoring

IoT, Embedded Systems, Mobile Integration

Built a smartphone-controlled wheelchair integrated with real-time patient vital monitoring and alerting systems. Selected among the top 10 projects for seed funding under Microsoft YouthSpark.

V-Card

RFID, Distributed Systems

Designed an RFID-based system for access control and transaction tracking across institutional environments, enabling real-time revenue tracking and multi-node coordination.