About

About

Kishan Singh

Kishan Singh

Software Engineer | Open Source Contributor

👨‍💻 About Me :

Education

ABES Engineering College
Jun 2023 — Jun 2027 | Ghaziabad, UP

B.Tech in Information Technology

Acharya Ambalal V Patel Junior College
Jun 2021 — Mar 2022 | Mumbai, MH

Senior Secondary (Science)

Technical Skills

Languages Java C++ Python JavaScript TypeScript SQL
Backend Node.js Express.js Fastify SpringBoot FastAPI REST APIs WebSockets gRPC tRPC
AI & Agents LangChain LangGraph RAG Pipelines AI Agent Workflows
Databases & DevOps PostgreSQL MongoDB Redis Docker Kubernetes (K3s) AWS ArgoCD CI/CD NGINX
Frontend & Tools React.js Next.js Git Linux Prisma ORM BullMQ

Experience

Oppia Foundation — Collaborator, CORE Team
Jan 2026 — Present | Remote
  • Fixed a critical Story Viewer bug by aligning frontend and backend chapter-state logic, restoring content publishing reliability.
  • Designed and shipped an Apache Beam audit + migration pipeline to backfill missing BlogAuthorDetailsModel entities, resolving large-scale datastore inconsistency.
  • Eliminated CI flakiness by fixing race conditions via deterministic rendering and improved test synchronization.
  • Authored technical root cause analysis docs covering datastore migration design and validation strategies.

Featured Projects

Code Submission Platform (Distributed Judge)
Node.js, Redis, BullMQ, Docker, K3s, ArgoCD
  • Architected a microservices-based online judge with decoupled services for scalable code execution.
  • Built an async evaluation pipeline with Redis + BullMQ, reducing submission latency by ~30% and improving throughput by ~40%.
  • Implemented Docker sandboxed execution with CPU, memory, and network isolation for C++, Java, and Python.
  • Deployed on K3s (Kubernetes) with ArgoCD GitOps, cutting deployment time by ~50%.
v0.dev Clone (AI Full-Stack App Generator)
Next.js, tRPC, Prisma, E2B, Docker
  • Built an AI-powered platform that generates full-stack applications from natural language prompts using LLM-driven workflows.
  • Enabled safe runtime execution via E2B sandboxed containers, isolating generated app environments per user.
Workflow Automation Platform (n8n Clone)
Next.js, TypeScript, Inngest, Stripe
  • Built a node-based workflow automation platform for visually designing and executing multi-step automations.
  • Designed an event-driven execution engine using Inngest for durable background jobs with step orchestration and retries.
MiniPostgres (Relational DB Engine from Scratch)
Java 17, B+ Tree, Buffer Pool, SQL Engine
  • Built a relational database engine from scratch with schema management, disk-based storage, and SQL execution.
  • Implemented a B+ Tree index for fast search and a buffer pool with LRU eviction to reduce disk I/O.

Achievements

Hacktoberfest 2025 — Global Super Contributor

Ranked in the Top 10,000 contributors globally for open-source contributions during Hacktoberfest 2025.

DrawDB — Open Source Contributor

Implemented PostgreSQL INHERITS support with 240+ lines of production code, enabling hierarchical table modeling.

Competitive Programming

Solved 500+ problems across data structures and algorithms with a peak LeetCode contest rating of 1639.