Swastik Kr.

Hi! I’m

Swastik Kumar

Full Stack Software Engineer

I own features end-to-end, from defining the flow, to building, shipping, and keeping things stable in production. That helps teams ship faster while staying reliable at scale.

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About

Why should you Hire me ?

Because I pick up a feature, drive it to completion, and deliver it into the product used by real users.

I’ve built and shipped real features across UI, APIs, and database integrations. I’m comfortable in messy problem spaces: clarifying scope, designing the flow, handling edge cases, and making the system observable and reliable in production.

2+ yrs shipped work Full Stack Ownership Production Grade Code

Ownership

I take a module from unclear requirements → shipped release with clarity and accountability.

Reliability

Idempotency, edge cases, retries, validation, and failure-safe workflows are default for me.

Speed without chaos

Fast execution with clean structure, so that product stays maintainable as it grows.

Experience

What I’ve delivered in production, and what I was responsible for.

Software Engineer (Full Stack)

30 Sundays (Brance Technologies)

Dec 2023 — Present
Gurugram
  • Automated Payment Memo via Razorpay webhooks + AWS (Lambda/SQS), reducing processing time from ~15 min → near-zero.
  • Automated voucher generation, cutting creation time from ~10 min → ~1 min and improving ops throughput.
  • Built a Document Management System (categorization + uploads), reducing turnaround time by ~40%.
  • Implemented DB Operations module with authorization + validation + realtime notifications, reducing data-related queries by ~50%.
  • Optimized Hotel Module (75K+ hotels), reducing selection time from ~20 min → under 1 min.
Payments Razorpay AWS Lambda SQS React Node PostgreSQL Optimization

Technical Writings

Deliberate thoughts, engineering deep dives, and system architecture design breakdowns.

System Deep Dive

Why Redis Is Fast

Don't just say that Redis is fast because it stores data in RAM. That explanation is incomplete.

10 min read Architecture & Performance
Performance Drawn Retrospective

From 2s to 10ms: Caching Search

A real-world engineering story of diagnosing database load and introducing optimizations to break the latency loop.

System Performance

Projects

Engineering deep dives, product-driven builds, and full-stack utilities.

Drawn Canvas Engine

Drawn

Flagship Project

Real-time multiplayer voice, video & canvas showdown. Combines WebRTC P2P mesh (<100ms media latency), server-authoritative WebSocket room manager, resolution-independent normalized canvas, and zero-asset Web Audio API synthesis.

Live App
The Algorithmic Path

The Algorithmic Path (T.A.P.)

Structured interview prep platform with curated DSA learning paths, expert technical articles, and an admin-verified community content contribution pipeline.

Admin Panel Rest API DB Design
Live App
Code Companion

Code Companion

Developer peer discovery & networking platform with parametric skill-based search, direct messaging, hackathon team formation, and mentorship workflows.

React Node.js CRUD
Live App

Education

Academic background and coursework.

8.18/10

B.Tech (CSE)

Chandigarh University

2020 — 2024

83.4%

12th Board (PCM)

St. Karens Secondary School

2018 — 2020

78%

10th Board

St. Xavier's High School

2018

Hackathons

Fast-paced builds with real demos and measurable outcomes.

Rakathon (Top 100)

Aug 2024 • Finalist • Team Recognition

Built a long-form product search experience using vector search + multimodal ideas (text/image) with voice search support.

Labour Chowk

Mar 2021 • Finalist • Track Winner

An e-platform fostering collaboration between laborers and customers.

Coding Profiles

Sharpening problem-solving through DSA practice and contests.

LeetCode Created with Sketch.
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