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marsh15/README.md

Santosh Kumar

backend engineering · applied ai systems

building reliable software and learning how modern systems work end to end.

portfolio → santoshkumarbuilds.vercel.app

computer science graduate focused on backend engineering and applied ai.

i like understanding systems from first principles — how they are designed, how they behave under failure, and what it takes to make them reliable in production.

what i'm working on

  • building backend and ai systems from scratch
  • getting deeper into databases, distributed systems, networking, and system design
  • learning how to take llm applications from prototypes to reliable production systems
  • improving my engineering fundamentals through projects and open-source work

areas i'm going deeper into

backend engineering apis · databases · concurrency · caching · queues · distributed systems

applied ai llm applications · rag · agents · tool calling · evals · ai infrastructure

production engineering testing · observability · reliability · containers · ci/cd · cloud

full-stack building the interfaces needed to turn backend systems into usable products

stack

languages python · typescript · go

backend fastapi · node.js · rest apis

frontend react · next.js · tailwind css

databases & data postgresql · redis · mongodb · pgvector

ai llm apis · langgraph · langchain · pytorch

infra & tooling docker · github actions · aws · kubernetes

currently exploring

  • designing reliable backend systems and APIs
  • database internals, transactions, indexing, and query performance
  • distributed systems, concurrency, queues, caching, and failure handling
  • retrieval, agents, evals, and observability for production llm systems
  • cloud infrastructure, networking, and deployment
  • system design from first principles

outside code

films · books · gym · running · travel · keeping up with new technology

contact

email → santoshkumaraidev@gmail.com github → github.com/marsh15 twitter → x.com/santu_0101

building things, understanding how they work, and getting better every day.

Pinned Loading

  1. Ledgerly Ledgerly Public

    A personal finance app that converts raw bank text and CSV statements into categorized, searchable transactions and spending insights.

    TypeScript

  2. Listwright Listwright Public

    An AI assisted CSV importer that cleans messy lead spreadsheets, validates extracted data, and exports CRM ready records.

    HTML

  3. pingme pingme Public

    PingMe is a privacy first real time chat application for instant, anonymous conversations. Create temporary rooms, share a link, and communicate no signup required.

    TypeScript

  4. relaypay relaypay Public

    A payment orchestration sandbox demonstrating reliable transaction recovery, immutable ledgers, reconciliation, and webhook delivery.

    Python

  5. SCRIBE SCRIBE Public

    An evidence first RAG workspace for uploading documents, asking questions, and receiving AI answers with inspectable source citations.

    JavaScript

  6. busbooking-app busbooking-app Public

    A full stack bus booking platform featuring route search, live seat selection, secure reservations, grouped tickets, and cancellations.

    TypeScript