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 (P1 Band)
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 (P1 Band)
American Express Global Business Travel · Domlur, Bangalore
- Architected and developed a new Java Spring Boot microservice from the ground up — owning service architecture, REST APIs, business logic, fault tolerance, and downstream integrations for a new read workflow.
- Designed and optimized a high-volume read microservice supporting 5–10 lakh lookups/day using Cassandra query optimization, pagination, batched multi-table retrieval, and caching — cutting latency by 50% with p95 below 20ms.
- Built and enhanced data-enrichment services processing 2–4 lakh records/day, primarily enriching rail data to improve data completeness and enable richer travel information.
- Designed and implemented a new data-enrichment solution replacing an existing company-specific capability, expanding coverage with additional data points across client data available through GBT.
- Developed scalable JSON/XML data-processing workflows for validation, transformation, mapping, and enrichment, supporting enterprise client onboarding and evolving integration requirements.
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
DataPilot
Ask questions, get answers — from documents and databases
AI backend with RAG pipelines, ReAct agents, and MCP tool integration — enabling natural language to SQL with safety guardrails, semantic document search via Pinecone, persistent memory in PostgreSQL, and real-time SSE streaming, all exposed as a standalone MCP server.
DataPilot MCP
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.
DataPilot UI
React Frontend for DataPilot
React + TypeScript + Vite frontend built to interact with the DataPilot 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
