Chintan Patel, Developer in Ahmedabad, Gujarat, India
Chintan is available for hire
Hire Chintan

Chintan Patel

Verified Expert  in Engineering

Software Developer

Ahmedabad, Gujarat, India

Toptal member since August 19, 2013

Expertise
Full-stackGPT-4iOSXcodeSwiftObjective-CFirebaseFirestoreMixpanelParseSSO Engineering
Bio

Chintan is an iOS developer with 14+ years of experience with over 15 apps shipped to various clients, including some Fortune 500 companies. Multiple apps he developed have reached 1+ million downloads, and some have been covered in TechCrunch. After being employed full-time for the first three years of his career, Chintan started his self-employment journey in November 2012 and has helped multiple clients achieve App Store success.

Portfolio

Independent iOS Developer
Objective-C, Mobile Applications, Architecture, Firebase, Node.js, Geolocation...
Proton
Swift, iOS, PSD to Swift, Instant Messaging, SwiftUI, Figma, Apple HealthKit...
Freelance Client
Swift, iOS, PSD to Swift, Instant Messaging, SwiftUI, Encryption, Security...

Experience

  • iOS - 15 years
  • Interface Builder - 14 years
  • Xcode - 14 years
  • Object-oriented Programming (OOP) - 14 years
  • UIKit - 14 years
  • Swift - 7 years
  • Objective-C - 6 years
  • Parse - 1 year

Availability

Part-time

Preferred Environment

Parse, MacOS, GitHub, Git, iOS, Xcode, Swift, Objective-C

The most amazing...

...app I have developed is Jukio, an app establishing a musical democracy by allowing users to vote via iPhone for the next song to be played at a party.

Work Experience

Freelance iOS Developer

2012 - PRESENT
Independent iOS Developer
  • Developed LoveArt, a greeting cards app that became the #1 free app overall in Spain and #2 in France and Brazil.
  • Developed Greets, another greeting cards app that enables users to share custom animated gifs as greeting cards for various occasions to friends via Facebook, Twitter, and email.
  • Developed Talking Puppy and Talking Santa, two apps that repeat spoken words in funny voices and allow users to export the audio/video to YouTube or to the phone gallery.
  • Developed a patient/doctor encrypted communication app using Parse as a backend.
Technologies: Objective-C, Mobile Applications, Architecture, Firebase, Node.js, Geolocation, Google Geocoding API, Geocoding, SwiftUI, Mobile Architecture, iOS SDK, RevenueCat, APIs, Mobile, REST, Single Sign-on (SSO), Mobile App Development, Full-stack, Mobile Development, Web Development, Web Applications

iOS/Swift Developer

2024 - 2024
Proton
  • Took over a project in critical condition from a previous developer and worked hard and fast to improve the project architecture and performance by fixing bugs and implementing Swift/SwiftUI best practices.
  • Managed another iOS developer and oversaw his work with code review before integrating it into the main project.
  • Converted client's Figma designs to SwiftUI for new features.
Technologies: Swift, iOS, PSD to Swift, Instant Messaging, SwiftUI, Figma, Apple HealthKit, Web Development, Web Applications, HealthKit

iOS/Swift Developer

2024 - 2024
Freelance Client
  • Developed a secure, real-time messaging app for iOS using SwiftUI and XMPP within a tight deadline by taking over work from a previous developer. Rapidly worked on adding new features and fixing existing bugs in the project.
  • Converted Figma design mockups provided by the client to an iOS app.
  • Assumed a tech lead role by reviewing and merging other developers' code into the main branch.
Technologies: Swift, iOS, PSD to Swift, Instant Messaging, SwiftUI, Encryption, Security, Mobile Architecture, iOS SDK, APIs, Mobile, REST, Mobile App Development, Mobile Development, Web Development, Web Applications

Senior Software Engineer

2010 - 2012
Gateway Technolabs Pvt. Ltd.
  • Developed a 3D game for iOS using the SIO2 3D game framework.
  • Worked onsite in South Africa for 16 months creating a text/voice messaging app aiming to replace the need for traditional SMS.
  • Developed TouchPoint, a survey management application for large corporations whose clients include US Army, US Navy, Amazon, Accenture, Bank of America, and more.
  • Developed Sears Catalogues for Sears Canada, enabling users to browse the entire Sears Catalogue on iPad.
  • Mentored new employees in iOS development by conducting training sessions for iOS development best practices, including how to be productive using Xcode, version control management, etc.
  • Developed a citizen journalism app and SDK for Filemobile that enables users to report incidents of interest by capturing audio, video, and text and uploading to a server.
Technologies: Mobile Applications, Architecture, Geolocation, Geocoding, Mobile Architecture, iOS SDK, Mobile, REST, Mobile App Development, Mobile Development

Software Engineer

2009 - 2010
Elan Technologies Ltd.
  • Estimated the time and cost requirements of iOS apps based on client specifications.
  • Developed a wireless file sharing app for iPhone that reached the Top 20 for free business apps on the App Store.
  • Developed Foursight, an iOS game for 2 players featuring AI logic design for playing against a computer, push notifications for playing over the internet, and bluetooth support for 2 player local gameplay.
  • Conducted training sessions for new employees to train them in various iOS technologies such as Core Data, UIKit, Core Location, etc.
Technologies: Objective-C, Mobile Applications, Geocoding, Mobile, Mobile App Development, Mobile Development

Software Engineer (Trainee)

2008 - 2008
Infosys Technologies Ltd.
  • Received training in C language, RDBMS, Java, JSP, HTML, CSS, JavaScript, and more to prepare for a career in the software industry.
  • Created a courier tracking system for a courier company involving use of the Oracle database, JSP, HTML, CSS, and JavaScript.
Technologies: JavaScript, CSS, HTML, Oracle, Jakarta Server Pages (JSP), Java, RDBMS, Unix, C

Greets

A fun app for sending animated greeting cards for all occasions and the app had custom animated stickers for various greeting occasions such as birthdays, anniversaries, etc. where the user could add his message in an animated GIF. The app would send a request to the server and create a customized GIF with the user's message.

Jukio

An app whose mission is to establish a musical democracy by crowdsourcing party playlists. It has been featured on TechCrunch, BBC radio, etc.

Sears Catalogues

An app for the Canadian App Store allowing users to browse the Sears Catalogue on the iPad.

TouchPoint | Business

A B2B application for companies, organizations, and institutions to collect feedback from their customers and employees, where the clients include Fortune 500 companies such as Amazon, Accenture, and Bank of America and government institutions such as the US Army, US Navy, and more.

Vexx SMS

A WhatsApp-like cross-platform voice and text messaging client developed in South Africa, striving to eliminate the need for traditional SMS.

The app was developed on multiple platforms, including iOS, Android, Blackberry, and Windows Mobile. I developed the iOS app from start to finish.

Foursight

An “easy to learn, hard to master” boardgame with an original concept. Can be played against computer or against other players.

Talking Santa

An entertainment app that mimics phrases said by the user in a funny tone.

LoveArt

A postcards app with uniquely designed original postcards to express love for someone and it has been ranked the #1 overall free app in Spain and #2 in France and Brazil.

Property Register

An app developed to provide an easy way for real-estate clients to keep track of various property listings and to collect contact information/feedback from visitors in a property show.

WiFi HD FREE (Wireless Hard Disk Drive)

https://itunes.apple.com/app/id311170976
An app that turns your iOS Device into a wireless pen drive, where it transfers files to/from an iPhone wirelessly over WiFi and ranked in the Top 10 for free business apps in the US App Store.

Motivator

An app helping people to quit smoking by allowing them to keep track of their progress.

EIE Legal Messaging

An encrypted messaging app with features such as restricting access based on location via geo-fencing, printing conversations, sending photos, videos, audio, stickers, etc.

It is a secure communication app based on Firebase, geolocation, and iOS SDK for communication between small groups like lawyers in law firms, doctors at hospitals, etc.

Call Recorder

https://apps.apple.com/app/call-recorder-record-phone/id6446800786
A call recording app for iPhone that allows you to record important calls to listen again later; it is an ideal app for recording phone interviews, lengthy explanations, advice from doctors/lawyers, etc.

I designed and developed the entire app from scratch and was the sole designer/developer who worked on it.

The app is rated on the App Store with a 4.6 stars average and 2,300+ ratings.

AskWHS

https://askwhs.au
A ChatGPT-powered app to ask questions about Worker Health & Safety (WHS) for the state of New South Wales in Australia where I was the sole developer in charge of developing the iOS app and the back end based on Node.js and the app used OpenAI API securely using Node.js back-end to stream responses to the iOS app while avoiding exposing the OpenAI API key to the iOS client.
2004 - 2008

Bachelor's Degree in Mechanical Engineering

VVP Engineering College - Rajkot, India

Libraries/APIs

Parse SDK, Facebook iOS SDK, X (formerly Twitter) SDK, Google Geocoding API, Firebase iOS SDK, AudioKit, HealthKit, RNCryptor, Node.js, Plivo

Tools

Xcode, Instruments, Interface Builder, iOS Simulator, TestFlight, OneSignal, Geocoding, Apple HealthKit, ChatGPT, Git, GitHub, ShowKit, Figma

Languages

Objective-C, Swift, C, Java, HTML, CSS, JavaScript

Frameworks

Core Location, Cocoa Touch, UIKit, SwiftUI, iOS SDK, AFNetworking, MapKit, Core Data, StoreKit, Jakarta Server Pages (JSP)

Paradigms

Object-oriented Programming (OOP), REST, Mobile Development, Functional Programming, Pair Programming, Agile Software Development, Mechanical Design

Platforms

iOS, Parse, Firebase, RevenueCat, Mixpanel, Mobile, Unix, Oracle, MacOS, Parse Server

Storage

Cloud Firestore, RDBMS, SQLite

Other

AVFoundation, Mobile Applications, Architecture, Instant Messaging, Mobile Architecture, OpenAI GPT-4 API, APIs, Mobile App Development, Full-stack, API Integration, Email, Mobile Apps, Video Editing, Image Manipulation, Geolocation, Single Sign-on (SSO), iOS Video, Back-end Development, Web Development, Web Applications, Geolocation Detection, PSD to Swift, Encryption, Security, Mechanical Engineering, OpenAI, Large Language Models (LLMs)

Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.

1

Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.
2

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.
3

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring