Sham Prakash K
Backend Engineer
4 years building distributed systems that scale. Java · Spring Boot · GraphQL · REST APIs. Exploring AI engineering — RAG pipelines, MCP servers, and Spring AI. Currently at American Express Global Business Travel.
Languages
Frameworks
Amex GBT
CurrentEngineer I Full Stack Developer
HashedIn
May 2026Software Engineer II
About Me
I'm a Backend Engineer who thrives on building systems that are fast, reliable, and ready to scale. Over 4 years, I've worked on everything from migrating monolithic platforms to microservices to designing GraphQL and REST APIs that serve millions of requests daily. I genuinely care about the craft — squeezing latency, eliminating failure modes, and writing code that a future engineer will thank you for.
Lately I've been deep in AI engineering — building RAG pipelines with Pinecone vector search, tool-calling agents, and MCP servers using Spring AI and the Gemini API. I believe AI will fundamentally reshape how backend systems are designed, and I want to be someone who builds those systems, not just uses them.
Technical Skills
Languages
Frameworks
Databases
Cloud & DevOps
Testing & Obs.
AI & ML
Tools
Experience
Engineer I Full Stack Developer
American Express Global Business Travel · Bangalore, India
- Developing and maintaining backend services for enterprise-scale global business travel platforms serving corporate clients worldwide.
- Building high-availability, distributed systems using modern backend technologies within cross-functional agile teams.
- Contributing to the reliability, scalability, and performance of mission-critical travel management software.
Software Engineer II
HashedIn by Deloitte · Bangalore, India
- Led architecture for high-throughput distributed backend systems handling 30M+ requests/day at 80K–100K rpm peak traffic.
- Spearheaded monolithic-to-microservices migration using Java Spring Boot and PostgreSQL, improving system reliability by 60%.
- Implemented Resilience4j patterns (circuit breakers, retries, time limiters) ensuring graceful degradation during downstream failures.
- Owned technical leadership for a team of 5 engineers and mentored 10+ junior developers through design reviews and code quality.
- Served as primary client-facing technical contact — gathering requirements, triaging production issues, and driving solution design.
Software Engineer I
HashedIn by Deloitte · Bangalore, India
- Designed GraphQL APIs achieving p95 latency under 9ms for reads and under 200ms for writes through query optimization and async processing.
- Reduced API response times from 1000ms to 200ms via multithreading, async execution, Redis caching, and SQL query tuning.
- Built React.js e-commerce dashboards integrated with backend GraphQL APIs across product listing, orders, and checkout flows.
- Scaled backend services to absorb a 35% traffic increase with zero downtime through strategic caching and performance optimization.
Software Engineer Associate
HashedIn by Deloitte · Bangalore, India
- Contributed to Java Spring Boot backend services, delivering feature development and bug resolution in production environments.
- Applied REST API design, relational database fundamentals, and agile practices in a professional engineering setting.
- Supported senior engineers in delivering production-grade features under tight deadlines, earning the Rising Star Award (Dec 2022).
Projects
Gemini Chat
AI Backend Learning Project — Phase by Phase
Spring Boot app exploring AI backend development end-to-end — plain HTTP chat, Spring AI integration, RAG pipelines with Pinecone vector search, persistent conversation memory, tool-calling agents, and MCP server connectivity. Deployed live on Render.
Gemini Knowledge MCP Server
RAG + Database Knowledge Server over MCP
Spring Boot MCP server exposing RAG (document ingestion + Pinecone vector search) and database query tools to any LLM host. Documents are chunked, embedded via Gemini API, and retrieved by semantic similarity — no chat model inside the server.
Gemini Chat UI
React Frontend for Gemini Chat
React + TypeScript + Vite frontend built to interact with the Gemini Chat backend. Clean chat interface consuming the Spring AI REST APIs with real-time conversation support.
Gemini MCP Server
Model Context Protocol Database Tool Server
Standalone Spring Boot app exposing database query tools over MCP/SSE. LLM-agnostic — connects to Claude Desktop, Cursor, or any MCP host. Enforces SELECT-only safety, row caps, and table allowlists.
Vercel Clone
Integrated System for Deployment
A microservices-based pipeline that fetches a React project from GitHub, automates the build process, uploads compiled builds to Cloudflare R2, and hosts them on specified ports with custom configuration.
Book Store
Microservices Backend for Book Management
A microservices-based backend using Java Spring Boot for scalable and modular design, with MongoDB for data persistence and Redis for caching to improve performance and responsiveness.
FarmLand
E-commerce Platform for Agricultural Products
A full-stack MERN marketplace with product listings, order management, secure payments, and a responsive UI. Used to teach practical full-stack development to students.
Reward Points Exchange
Blockchain-Based Loyalty Platform
A Web3 application on the Ethereum blockchain enabling users to swap reward points across organizations via crypto token exchange and cross-entity trading.
Awards & Recognition
Outstanding Award
Semi-AnnualAwarded by Deloitte, parent company of HashedIn, for exceptional performance directly recognised by the client — one of the rarest and most prestigious distinctions in the organisation.
Deloitte (Parent of HashedIn)
Oct 2025
Top Impactor Award
Semi-AnnualSustained high-impact contributions and ownership of critical deliverables across half-year cycles.
HashedIn by Deloitte
Mar 2024 · May 2025
Tech Champion Award
QuarterlyDriving technical excellence and resolving complex engineering challenges with measurable business impact.
HashedIn by Deloitte
Sept 2024
Excellence Award
MonthlyConsistent high-quality delivery, reliability, and above-and-beyond contributions recognized monthly.
HashedIn by Deloitte
Nov 2023 · May 2024 · Aug 2024 · Jan 2025
Rising Star Award
MonthlyOutstanding growth and performance recognized in the first year of a professional engineering career.
HashedIn by Deloitte
Dec 2022
