Khushvinder Singh

Senior Flutter Developer

Khushvinder Singh

I build mobile products that feel effortless to use: real‑time multiplayer games, AR‑powered discovery and privacy‑first communication, shipped to iOS and Android from one Flutter codebase.

Six years in, I still sweat the details: fluid interfaces, resilient real‑time systems, and architecture that teams enjoy building on.

View my work Get in touch
Portrait of Khushvinder Singh
0Years of experience
0Downloads across my apps

Shipped to

BackgammonGalaxy logoBackgammonGalaxy
PartyPal logoPartyPal
Coretechies logoCoretechies

Experience

Where I've worked

BackgammonGalaxy

Senior Flutter Developer Current

  • Own the Flutter client of a competitive backgammon platform with a worldwide player base.
  • Designed the tournament experience end to end: registration, live brackets, round progression and results.
  • Built the real‑time layer for matchmaking, live game sessions and instant reconnects.
  • Developed the in‑game economy (coins, ratings, purchases) so every screen stays in sync.

PartyPal

Team Lead

  • Led the team behind the consumer app of a four‑app nightlife platform for guests, venues, vendors and door staff.
  • Designed an AR discovery mode that places nearby events on the live camera view by direction and distance.
  • Shipped ticketing, venue bookings and vendor hiring with secure checkout and live attendee chat.
  • Improved how the team planned, reviewed and released work.

Coretechies

Software Development Engineer

  • Took client apps across several industries from first concept to store release.
  • Engineered SecureCrypt's messenger: Signal‑protocol encryption, offline‑first storage, encrypted media and timed self‑destruct.
  • Integrated maps, payments, push notifications and cloud services across projects.

Independent

Freelance App Developer

  • Where it started: apps for startups and local businesses, from e‑commerce and food delivery to restaurant management.
  • Built live fleet tracking, location features and voice‑driven navigation with specialised SDKs.
  • Ran projects end to end, from scoping with clients to leading small delivery teams.

Featured work

Apps in the wild

Backgammon Galaxy app icon

Backgammon Galaxy

Online backgammon · iOS & Android · 100K+ downloads

A place to play, study and compete at backgammon. Players are matched by skill around the clock, games are analysed move by move by a grandmaster‑level engine, and the official tournaments draw the game's top players.

What I built

  • The complete tournament module: entry, brackets, live rounds and standings
  • Game modes (rated, coin, AI and friends) with smooth animated gameplay
  • Real‑time matchmaking and session recovery
  • Coins, ratings and in‑app purchases

Inside the app

24/7 skill‑based matchmaking Private matches with friends Ratings & leaderboards Official tournaments Move‑by‑move AI analysis Personal blunder log Performance & dice stats Tactical quizzes Bots up to grandmaster level Strategy sandbox Grandmaster lessons Board themes & memberships
Lobby Gameplay Gameplay Stats Lessons Analysis
PartyPal app icon

PartyPal

Nightlife platform · four apps · iOS & Android

One ecosystem for a night out: guests discover and book, venues run their events, vendors take gigs and door staff handle entry, each in its own app.

For guests. My team built this one.

AR event finder Events by city Personalised picks Instant booking Ticket transfers Hire DJs, bands & more Attendee chat Personal calendar

For clubs and event companies.

Event listing & promotion Booking management Sales & footfall analytics Talent hiring Content management AI promo creatives

For DJs, artists, chefs, bartenders, decorators and venue owners.

Professional profile Booking requests Availability calendar In‑app payments Earnings insights Reviews & ratings

For bouncers and entry staff.

Ticket scanning Live guest lists Fraud prevention Faster entry
N 0°5 km

AR finder: events appear in the direction you point your phone. Move your mouse to look around.

SecureCrypt logo

SecureCrypt

Encrypted communications · hardened BlackBerry OS

Secure messaging for people who can't afford a leak. It runs on hardened devices with a customised BlackBerry OS and is distributed privately, not through public app stores.

What I built

  • The messenger: Signal‑protocol end‑to‑end encryption with keys generated on the device
  • Offline‑first storage and encrypted media
  • Timed self‑destructing messages, removed from both devices

Platform

Encrypted voice calls Real‑time voice changer Decoy chat masking Invite‑only networks Remote & panic wipe Duress passcode Forensic & ADB protection Stealth mode
Secure chatE2E · Signal
Meet at the usual spot, 9 PM.
Decrypted10s

Encrypted in transit, readable briefly, then destroyed.

More projects

Also built

Casual & casino games

Roulette, a lucky spin wheel and snake, with game loops and physics tuned for 60fps. What I'm working on now.

E‑commerce

Catalogues, carts, checkout and order tracking.

Hotel & restaurant

Reservations, menus, orders, billing and staff tools.

Food delivery

Customer, restaurant and rider apps with live order status.

Live tracking

Real‑time fleet and device tracking with Traccar and maps.

Encrypted chat

End‑to‑end encrypted messaging with offline support.

Voice assistants

Hands‑free, voice‑driven navigation inside apps.

Augmented reality

Camera and compass overlays for real‑world places.

Off the clock

Beyond the code

CarsPorsche 911 GT3 RS and BMW M MusicKaran Aujla on repeat SudokuA puzzle a day

Garage

Favourite machines

Pick a car, then press and hold to rev. Turn your sound on.

0RPM

    On repeat

    Karan Aujla

    Eight tracks that are always in my queue.

    Ashke

    Karan Aujla & MXRCI

    AUJLA SZN 1
    0:00 0:00

      Arcade

      Take a break

      A sudoku, because I'm hooked, and a small version of the snake game I built.

      Time00:00
      Mistakes0/3

      Select a cell, then a number. The keyboard works too.

      Snake

      Collect the stars. Avoid your tail.

      Score0
      Best0

      Use the arrow keys or WASD. On mobile, swipe or use the pad. Space pauses.

      Contact

      Let's build something great.

      Open to product roles, freelance projects and conversations about Flutter.

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