Rahul Nainala

01 — Introduction

Open to Senior SDE / Staff·Bengaluru, hybrid·Immediate

Full-stack engineer.Built for scale.Shipping in Bengaluru.

Migrated four teams off a monolith. Cut API latency 40%. Took onboarding from two days to fifteen minutes. Currently full-stack at QAIG — quantum AI. Open to Senior SDE / Staff in Bengaluru.

Rahul NainalaRahul Nainala
Bengaluru-boundCurrently at QAIG
live·local·build 28f09ba
repos

—

followers

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leetcode

180+

years

4.6+

Now in Hyderabad

10:02:24

IST
Currently at QAIG · Hyderabad

stack

next@15tailwind@4motioncmdk

02 — By the numbers

4 years. Four companies. Measured.

Real systems. Measurable outcomes. Not adjectives.

0+

Enterprise clients

0%

Jest coverage

−0%

Bundle cut via MFE

0

Teams migrated

0+

Dev-hours saved / qtr

0%

API speedup N+1 fixes

Architecture

Monolith to micro-frontend migration. Webpack 5 Module Federation. Four product teams. Zero downtime.

Performance

N+1 fixes. Three.js LOD. Vite migration. Measurable wins, every release.

Quality

85% Jest coverage at Casp AI. Testing standards I established at Hexagon supported 50+ engineers.

03 — Architecture

Every layer, in production.

Five layers. Hover any box — every one of them is something I've shipped, debugged, or designed in production.

01 · CLIENT02 · EDGE03 · API04 · COMPUTE05 · DATABrowserMobileCDNRate LimiterGatewayAuthServicesWorkersPostgresRedisS3

Layer

CLIENT

Where users meet the product. Fast renders, accessible, responsive.

ReactNext.jsThree.jsTypeScriptTailwind v4

Designed and shipped systems across every layer of this stack.

API gateway → healthy (23ms p99)

04 — Expertise

The stack I ship with.

6 domains. 56+ tools. 4.6+ years in production.

Languages

PythonTypeScriptJavaScriptSQLGo (learning)

Backend & Architecture

FastAPIDjangoNode.jsREST APIsgRPC (basic)WebSockets (production)Async job queuesMessage Queues (studying)MicroservicesModule FederationRate limiting (token bucket, sliding window)System DesignDistributed SystemsSOLID

Data & Caching

PostgreSQLRedis (production)MongoDBKafka (studying)Schema designIndexingSQL optimisationQuery performance tuningMigrationsCaching strategies

DevOps & Cloud

DockerDocker ComposeKubernetes (learning)GitHub ActionsCI/CDAWS (S3, EC2, RDS, Lambda, CloudFront)LinuxAWS CLI

Frontend

React.jsNext.jsThree.jsTailwind CSSReduxReact RouterWebpack 5ViteHTML5CSS3

Quality & Observability

JestPytestUnit & integration testingMockingCoveragePerformance benchmarkingStructured loggingSentry / error trackingOpenTelemetry (concepts)

05 — Experience

Where I've shipped.

5 roles. Four companies. Since October 2021 — 4.6+ years.

QAIG

Full-Stack Engineer

CurrentHyderabad / RemoteDecember 2025 – Present
  • ●Owning full-stack delivery for the QAIG product platform — Next.js frontend, FastAPI services, and Postgres on AWS — shipping research-to-product features end to end.
  • ●Designed and rolled out the API + caching layer fronting quantum simulation jobs, cutting average request latency from ~1.2s to under 300ms via Redis caching + connection pooling for hot workloads.
  • ●Built a Dockerized job-runner abstraction with GitHub Actions CI, taking deploy time from manual hours to a sub-5-minute push-to-prod pipeline.
  • ●Drove system-design choices on async job queues, idempotent APIs, and per-tenant data isolation — directly enabling onboarding of early enterprise design partners.
React·Next.js·Python·FastAPI·Docker·GitHub Actions·AWS

Rubus Digital Pvt. Ltd.

Software Developer

Hyderabad, IndiaJune 2024 – December 2025
  • ●Architected and shipped a Three.js-based 3D dashboard with 30-second polling API overlays — live IoT data across 3D asset models, sub-2s render at 1080p for 50+ enterprise clients.
  • ●Designed a scalable JSON-schema-driven system that let non-technical teams configure 3D models dynamically, reducing developer dependency by 60%.
  • ●Led a monolith-to-micro-frontend migration using Webpack 5 Module Federation, improving deployment efficiency by 40% across 4 product teams.
  • ●Built a CLI that registered MFE port namespaces, scaffolded boilerplate, and wired Docker Compose configs in <30 seconds — cutting new-team onboarding from 2 days to 15 minutes.
React·Three.js·Webpack 5·Module Federation·Docker

Casp AI

Senior Software Engineer (Contract)

RemoteJuly 2023 – June 2024
  • ●Built the real-time AI chat UI in React + Tailwind — streaming token-by-token responses with optimistic state, abortable in-flight requests, and graceful retry on socket drops.
  • ●Migrated the engineering team's build pipeline to Vite, cutting CI builds from ~8 min to under 5 min — saving 100+ developer hours quarterly across the team.
  • ●Refactored the legacy chat frontend into a modular component system (message bubbles, streaming renderer, tool-call cards, prompt input) — 20% faster render across devices.
  • ●Owned the reusable chat primitives that other product surfaces consumed, increasing cross-team product velocity by ~35% month over month.
React·Tailwind CSS·Vite·TypeScript·Jest

Hexagon Capability Center India

Software Engineer

Hyderabad, IndiaJune 2022 – July 2023
  • ●Architected interactive React dashboards for engineering teams processing 10K+ data points, reducing render load time by 30%.
  • ●Collaborated with C# backend microservices teams on REST API integrations and resolved key UX/backend alignment issues.
  • ●Conducted code reviews and helped establish frontend testing standards, reducing production bugs by 20%.
  • ●Identified and fixed N+1 query issues in backend workflows, improving API response time by 40%.
React·REST APIs·JavaScript·PostgreSQL

Hexagon Capability Center India

Software Engineer Intern

InternshipHyderabad, IndiaOctober 2021 – June 2022
  • ●Built a TensorFlow-based machine learning model for P&ID diagram detection in a computer vision use case.
  • ●Developed a web UI for model inference and result visualization.
  • ●Authored technical documentation for the model deployment pipeline.
Python·TensorFlow·OpenCV

06 — Projects

Built, shipped, in flight.

Production work. Weekend system-design builds. The open-source library shipping next.

ShippedDevTools

Micro-Frontend Architecture Migration

Modernizing a legacy monolith into scalable micro-frontends.

Setup time from 2 days → 15 minutes. Bundle size −30%. 4 product teams migrated.

Webpack 5Module FederationReact
2024View
ShippedFrontend

3D Asset Interaction Dashboard

Three.js-based enterprise 3D workspace, JSON-schema driven.

Load time 5s → 1.2s. JSON-driven config cut developer dependency 60%.

Three.jsReactTypeScript
2024View
LiveFrontend

This Portfolio

The site you're on — Next.js 15, Tailwind v4, Motion.

Lighthouse 98 · Tailwind v4 design system · Motion animations

Next.js 15Tailwind v4Motion
2025Live

Building next — system design

in progress

Distributed URL Shortener

TinyURL clone — consistent hashing, bloom filters, Redis at scale.

Why this matters → Same scale problems Zepto/Swiggy catalog & ETA services face — consistent hashing + read-path optimization.

Real-time Collaborative Editor

CRDTs + WebSockets + live presence — like Notion, built from scratch.

Why this matters → CRDTs at scale — same foundation as Figma & Notion real-time infra.

Rate Limiter Library

Token bucket + sliding window in Redis Lua — npm + PyPI dual-publish.

Why this matters → Dual-published OSS (npm + PyPI) — signals product thinking, not just feature shipping.

Personal work

LiveFull-Stack

Dev Wear

Full-stack e-commerce for developer-themed apparel.

Next.jsNode.jsExpress.js
2024Live
7 projects totalView all projects

07 — Depth

What I'm sharpening.

Algorithms, distributed systems, certifications — building depth by shipping, not just reading.

LeetCode

Premium member

180+

solved

Focus

Medium · Hard difficulty · daily practice

Topics

Arrays & StringsTrees & GraphsDynamic ProgrammingSliding WindowBinary SearchLinked ListsRecursion & BacktrackingHeaps & Priority Queues
Strong algorithmic foundation, built daily.

System Design

Distributed systems

Consistent HashingSolid
Rate LimitingSolid
URL ShortenerSolid
Caching StrategiesSolid
WebSocket at scaleSolid
MicroservicesSolid
Database ShardingStudying
Message QueuesStudying
Distributed LocksStudying
CDN & Load BalancingNext
Event SourcingNext
Service MeshNext

Education

B.Tech, Computer Science & Engineering

Lovely Professional University

Aug 2018 – Jul 2022

Data StructuresAlgorithmsDatabase DesignOOP

Awards

Runner-up · PRAGNYA Innovation Event

2nd / 40+ teams · ₹6,000 award · innovative UI design

Continuous learning

  • LeetCode Premium · 180+ problems

    Medium & hard difficulty · ongoing

  • AWS Solutions Architect — self-study

    Working through SAA-C03 domains alongside production AWS work

  • System design & distributed systems

    Caching · DB optimisation · cloud architecture

08 — Contact

Let's build something.

Senior SDE / Staff roles in Bengaluru. Side projects. Distributed-systems chats — all welcome.

nainalarahul2k1@gmail.com

Email — preferred

github.com/rahulnainala

Open source & projects

linkedin.com/in/rahulnainala

Professional profile

+91 90665 90509

Availability

Senior SDE / Staff · Bengaluru, hybrid · 30-day notice.

Happy to chat about compensation in the first call.