001 / About

Ankit Kumar

I'm a final-year Computer Science student who started by building APIs and kept digging deeper to understand how systems work under the hood. This curiosity led me to explore the full depth of the stack—from building a storage engine with memory management in C++26, to writing a Redis-compatible server driven by a single event loop, and designing high-concurrency booking platforms.

My focus is on systems engineering and performance. I believe in measuring what matters, so I back my work with benchmarks and tests. I'm always learning, and if something is a work in progress, I'm upfront about it.

When I'm not at the terminal, you'll probably find me solving competitive programming challenges (Codeforces Expert) or playing chess.

Location
Bhopal, India
Focus
Backend, Distributed system, and Concurrency
Available
From June 2026

GitHub Heatmap (Last 12 Months)

Total (12mo)

1056

Today

0

Max Commits (1 day)

76

002 / Experience
θ RECENCY = WARMTH

Backend & systems engineering

ControlShift Talent

Web Developer Intern

Feb — May 2025

Architected real-time infrastructure in production for a live AI interviewing platform.

  • Architected real-time infrastructure for a live AI interviewer — WebRTC signaling server + WebSocket layer with heartbeat, room management, and reconnection for candidate–AI video sessions.
  • Built a collaborative code editor over WebSocket, syncing client state live during interviews.
  • Async job queues (BullMQ + Redis) for blocking email I/O, with retry and dead-letter handling.
  • 30+ REST endpoints with input validation and centralized error handling; 25+ unit tests on auth/booking paths.
003 / Capabilities
θ FUNCTIONAL CLUSTERS

Skills Matrix

Languages

Java (Primary)C++ (C++26)RustPythonTypeScript / JavaScriptSQL

Backend & Frameworks

Spring BootFastAPIAxumNext.jsREST APIsWebSocketsWebRTC

Databases & Caching

PostgreSQL (HikariCP)RedisDragonflyDBChromaDB (Vector DB)

Systems & Concurrency

Java NIOVirtual Threads (Java 21)Lock-free Data StructuresMemory Allocators (Arena, TLAB)Epoch-based ReclamationMVCCEvent-driven I/O

AI & LLMs

LangChainRAG PipelinesPrompt EngineeringGeminiQwen3-4BPrompt Guardrails (Pydantic)

Infrastructure & Tools

LinuxDockerAWS (EC2, Lambda)Oracle Cloud InfrastructureGitPrometheusGrafana

C++/Systems Tooling

CMakeGDBperfTSAN/ASAN/UBSANValgrindGoogle Benchmark

Message Queues / Async

BullMQRedis Pub/Sub
004 / Education
θ IMMUTABLE RECORD

Credentials

B.Tech, Computer Science & Engineering

Lakshmi Narain College of Technology, Bhopal

Aug 2023 — May 2026

CGPA 8.41 / 10

Certifications

  • Oracle Cloud Infrastructure 2025 Developer Professional (1Z0-1084-25)
  • AWS Academy — Cloud Foundations