Open to remote & relocation

Arun
Mukati.

Senior Full Stack Engineer|

I build scalable, production-grade backends and full-stack products for iGaming, SaaS and enterprise — platforms serving 1M+ users and 20M+ daily transactions.

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About

I turn heavy traffic into calm, reliable systems.

Senior Full Stack Engineer with 4+ years across iGaming, SaaS and enterprise. Core expertise in Node.js, TypeScript, PostgreSQL and Angular, with working experience in NestJS and full-stack range across Vue.js, Next.js and Ionic.

I take end-to-end ownership — schema design, query tuning, real-time streaming, payment integrations and AWS/Cloudflare delivery — with zero-downtime deployments across 3+ years of live production.

  • Indore, India
  • Hindi · English
  • Remote / Relocation
Scale

Live platform serving 1M+ users with 10K+ concurrent WebSocket connections.

Performance

Critical queries cut from 60s to 2–3s with partitioning and indexing.

Real-time

Sportsbook odds streamed to 50K+ players via RabbitMQ, Redis and WebSockets.

Payments

PayPal, RazorPay, CCPayment, NowPayment and 5+ casino SDKs integrated.

Experience

The path so far — from a first internship in 2019 to a live platform serving a million users.

Sep 2019 – Sep 2020

Frontend Developer Intern

HackerKernel · Bhopal

  • Built web and mobile apps with Vue.js, Angular and Ionic, plus Electron.js desktop apps; shipped production builds via CI/CD.
Nov 2020 – May 2021

Software Engineer Intern

RapidKen.ai · Remote

  • Built Angular (v13–14) UI modules with REST and WebSocket integration for analytics dashboards across 5+ product areas.
Mar 2022 – Jun 2025

Solution Engineer — Full-Stack (Node.js & Angular)

GammaStack · Indore

  • Maintained Node.js + TypeScript services for a SaaS platform on PostgreSQL; reduced average API response time by ~30% via service-layer optimisation and query tuning.
  • Streamed real-time sportsbook odds with Node.js, RabbitMQ, Redis and WebSockets to 50K+ concurrent players at sub-100ms; AWS (EC2, ALB, Auto Scaling) absorbed 10× spikes with zero downtime.
  • Integrated PayPal, CCPayment, NowPayment and RazorPay with webhooks and multi-currency reconciliation; onboarded 5+ casino provider SDKs via custom adaptors.
  • Contributed to Cloudflare + AWS CDN rollout — part of a team effort that delivered ~35% faster page loads.
Jul 2025 – Present

Software Development Engineer II

Solvebyte · Indore

  • Maintain the backend of a live real-money iGaming platform serving 1M+ active users — production incidents, crash fixes and 99.9% uptime across wallet, betting and game APIs.
  • Built secure REST APIs and WebSocket features handling 10K+ concurrent connections at sub-50ms latency; Nginx load balancing across Node.js instances cut critical errors by ~25%.
  • Led development on a gaming platform handling 20M+ daily transactions, peaking at 2,000+ users/min.
  • Cut critical query times from 60s to 2–3s via table partitioning, indexing and SQL rewrites in PostgreSQL.

Skills

Core stack

Node.js

APIs, WebSockets, queues

TypeScript

Typed services end to end

PostgreSQL

Partitioning, indexing, tuning

Angular

v12 – v17 production UIs

Full toolbox

01
Backend

APIs, queues and real-time services that stay up under load.

  • Node.js
  • Express.js
  • TypeScript
  • NestJS
  • WebSockets
  • REST APIs
  • RabbitMQ
  • Microservices
  • Event-Driven Architecture
  • Cron Jobs
02
Databases

Schemas, indexes and queries tuned for heavy traffic.

  • PostgreSQL
  • Redis
  • MySQL
  • Sequelize ORM
  • Indexing
  • Query Plans
  • N+1 Elimination
  • Table Partitioning
03
Frontend

Production UIs across Angular and the wider JS ecosystem.

  • Angular
  • TypeScript
  • HTML5
  • SCSS
  • Bootstrap
  • Angular Material
  • Vue.js
  • Next.js
  • Ionic
  • Electron.js
04
Cloud & Infra

Deploying, scaling and watching live platforms.

  • AWS EC2
  • S3
  • CloudWatch
  • Bastion Host
  • ALB
  • Auto Scaling
  • Nginx
  • Cloudflare CDN
  • Docker
  • GitHub Actions
  • GitLab CI
05
Payments

Gateways, provider SDKs and secure webhooks.

  • PayPal
  • RazorPay
  • CCPayment
  • NowPayment
  • Sportsbook Feed APIs
  • Casino Provider SDKs
  • JWT / OAuth2
  • Webhook Design
06
Practices

How the work gets built, reviewed and shipped.

  • SOLID
  • Clean Architecture
  • API-First Design
  • TDD
  • Agile / Scrum
  • Code Review
  • OWASP Security
  • Performance Profiling
  • Git
  • Postman
  • Swagger / OpenAPI

dashed outline = working knowledge

Selected work

Not just shipped.
Built for production.

Platforms I have built and maintained — and the outcomes they delivered.

Live sportsbookWalletSettlement
Real-time, at scale.
01 · Crypto iGamingProduction

Betski

Crypto casino and sportsbook with live odds streaming, multi-cryptocurrency wallets and automated settlement engines — zero settlement errors via Redis and RabbitMQ.

100K+concurrent sessions at peak

Node.jsAngularPostgreSQLRedisRabbitMQ
LeaderboardAffiliates
Fast under any traffic.
02 · Casino PlatformProduction

City99

Custom casino with a proprietary game engine, affiliate management and real-time leaderboards for 100K+ users. Nginx and EC2 auto-scaling absorbed 5× traffic spikes with no downtime.

35%faster average load

Node.jsAngularPostgreSQLNginxAWS EC2
SlotsLivePokerSports
Built for the region.
03 · Regional iGaming · Mexico & ChileProduction

ProGambling.bet

Regional casino and sportsbook across slots, live casino, poker, baccarat, roulette and multi-sport betting, with Google OAuth sign-in and regional payment methods.

3,000+games, casino and sportsbook

Node.jsAngularPostgreSQLGoogle OAuth
DraftScoringContest
Live, every second.
04 · Fantasy SportsProduction

Blue Divine

Sports draft fantasy game with salary-cap team building, an automated scoring engine and live leaderboards for 10K+ simultaneous contest participants.

<200msleaderboard refresh, 10K+ users

Node.jsAngularSequelizeWebSockets
AttendanceLeavePayroll
People, organised.
05 · Enterprise HRProduction

EMS

Employee management for 500+ people: attendance, leave, payroll, analytics and role-based access. Bulk CSV/XLS pipelines and cron-based payroll removed hours of manual work and calculation errors.

10+ hrssaved every week

Node.jsAngularPostgreSQLRedis

Education

B.Tech — Computer Science Engineering

People's University, Bhopal

2017 – 2021
Full Stack Development — Certification

Sheryians Coding School

2020

What's next?

Let's build something.

Open to remote roles and relocation to Tier 1 cities (Bangalore, Hyderabad, Pune, Mumbai). Reach out any time.

arunmukati3@gmail.com LinkedIn