Abhishek is available for hire
Hire AbhishekAbhishek Sengar
Verified Expert in Engineering
Software Developer
Location
New Delhi, Delhi, India
Toptal Member Since
August 26, 2014
Abhishek is a top engineer with a proven track record delivering apps that have been downloaded millions of times, raised funding, seen widespread media coverage, and been featured on the App Store. He has built digital products for startups and established companies like Goldman Sachs, Morgan Stanley, Dell, Convergys, and ixigo. His clients have been incubated at Y Combinator and 500 Startups and featured on Techcrunch, The Next Web, and MTV.
Portfolio
Hot Cocoa Software, Pvt., Ltd.
Git, Android, iOS, Objective-C, Swift
Playcez Technologies, Pvt., Ltd.
Git, Python, Core Location, Xcode, iOS, Objective-C
What An App, Pvt., Ltd.
Git, Xcode, iOS, Objective-C
Experience
Availability
Part-time
Preferred Environment
SourceTree, Git, ITerm, Vi, Dash, Xcode, MacOS
The most amazing...
...app I've built is a music app which was nominated for a 2013 Webby in the company of Pandora, Songza, and Vevo Mobile, and won the 2013 W3 Silver award.
Work Experience
Partner, Senior Developer
2013 - PRESENT
Hot Cocoa Software, Pvt., Ltd.
- Created a multitude of iOS apps, a few of which have won awards and most of which have been featured on the app store.
- Worked with a range of clients including startups, SMEs, and large enterprises. Involved in all steps of the process, from project proposals, strategy, design, and development to the final delivery. Clients range from Dell, Convergys (NYSE: CVG), ixigo ($25 million funding by Sequoia Capital and others), and Tapzo ($21 million funding by Sequoia Capital) to Micromax (one of the largest smartphone makers).
- Completed several apps including a music app, a travel search app, a hotel booking app for mobile travelers, an official app for a sports team, an app which lets users locate nearby beacons or broadcast a beacon signal, and an interactive media-rich app which lets users store, sync, and share files.
- Received an iXiGem award from ixigo for outstanding work done on the iOS app.
- Hired and trained other developers on iOS.
Technologies: Git, Android, iOS, Objective-C, Swift
Co-founder & CTO
2012 - 2013
Playcez Technologies, Pvt., Ltd.
- Put together, managed, and trained the core technical hired from the Indian Institute of Technology.
- Developed and designed an iPhone app that helps users discover places, events, and activities in neighborhood.
- Populated relevant information from our data partners using Python scripts and wrote an API to be consumed by the iPhone app.
- Helped raised $500,000 in seed funding from some of India's most prominent investors and received coverage in TechCrunch, TheNextWeb, The Times of India, etc.
- Acquired by IndiaMART (India's largest B2B marketplace).
Technologies: Git, Python, Core Location, Xcode, iOS, Objective-C
Co-founder
2011 - 2012
What An App, Pvt., Ltd.
- Built an identification guide iOS app for the shorefish fauna of the Tropical Eastern Pacific for the Smithsonian Tropical Research Institute.
- Created a personal dining journaling iOS app for foodies allowing users to search, rate, and review nearby restaurants. Implemented functionality for users to record meals at a restaurant that get rolled up into a list of all the meals they've had there, making it easy to recall past experiences and see what dishes they loved or hated.
- Created a simple, professional digital protractor iOS app that auto-finds angles (using real-time image processing algorithms) with a single touch or allows manual calculation from images stored in the user's phone.
- Built an enterprise iPad app for maintaining portfolio and trading stocks for a California-based company.
- Built an iPhone and iPad app to help school teachers with classroom management for a UK based company.
Technologies: Git, Xcode, iOS, Objective-C
Senior Associate
2008 - 2010
Headstrong Services, Pvt., Ltd.
- Built enterprise systems for Goldman Sachs and Morgan Stanley.
- Built a document repository system (for outgoing/incoming confirmations and rates like LIBOR) for an investment bank, which automated the handling and processing of documents.
- Built an inventory management system for an investment bank. Available positions from the various lender accounts were seamlessly incorporated (through Autosys jobs using EJBs) and provided to the traders in an easy to use GUI.
- Reduced the response time of systems by redesigning database and optimizing database queries.
Technologies: PuTTY, Jakarta EE, CVS, Perforce, HTML, SQL, IBM Db2, Sybase, WebLogic, Enterprise Java Beans (EJB), FitNesse, Autosys, JDBC, Spring, Hibernate, C++, C, Perl, Java
Experience
Convergys MyTransport
https://play.google.com/store/apps/details?id=com.cvg.myTransportThe Convergys MyTransport app for Android, iOS, and Windows Phone helps Convergys India's employees travel hassle free, improves safety, and saves time, every day, by avoiding unnecessary phone calls. Real-time cab info, roster, and scheduling options are only a couple of taps away!
The app made it to #1 in the Business category for both the "Top New Free" and "Trending" sections on the Play Store.
The app made it to #1 in the Business category for both the "Top New Free" and "Trending" sections on the Play Store.
iOS App: Ixigo
Search and compare best hotel rates, restaurants in a city, cheapest flight ticket fares, destination travel guides, places to visit, things to do, places to eat, trains, buses and much more. Ixigo is India's #1 travel search app (MakeMyTrip, Softbank Asia Infrastructure Fund (SAIF Partners), Micromax and Sequoia Capital portfolio).
The app regularly features on the App Store's homepage including "Best New Apps," "Best Travel Apps," "Best Made in India Apps," etc.
The app regularly features on the App Store's homepage including "Best New Apps," "Best Travel Apps," "Best Made in India Apps," etc.
Android App: Tapzo (Sequoia Capital Portfolio)
Tapzo (previously Akosha), is India's first All-in-One App: Recharge prepaid mobile & DTH, pay postpaid mobile, electricity & other utility bills, book cabs/taxis & autos, flights, order food, find best offers, deals & coupons, book home services, appliance repairs and vehicle repairs.
- Millions of downloads
- Raised USD $16 million in funding from Sequoia Capital four months after the app's launch
- Climbed to #3 on the Play Store in the Lifestyle category
- Millions of downloads
- Raised USD $16 million in funding from Sequoia Capital four months after the app's launch
- Climbed to #3 on the Play Store in the Lifestyle category
iOS App: The Tribe - Apache Industrial Services Talent Management Resource
The Tribe is a talent management app that connects craftsmen to Apache Industrial Services’ world-leading technical resource team. After applying once, craftsmen can be registered in their system and be connected to projects.
With The Tribe, craftsmen and employees of Apache Industrial Services can log their past working experience and documentation, and managers can quickly and easily relay job updates to their crews.
With The Tribe, craftsmen and employees of Apache Industrial Services can log their past working experience and documentation, and managers can quickly and easily relay job updates to their crews.
iOS App: ShaleApps Logistics
ShaleApps automates the work order to cash collection process for leading oil and gas operators and vendors by providing a stack of transport logistics support applications.
I architected the iOS app in Swift which is used by drivers, hauling water or waste products, for data collection (route waypoints, shifts, field tickets, etc.). The app collects location data in a manner similar to how Uber works (the data can be replayed later to view the route taken by the driver). Realm was used for local storage of data. AlamoFire was used for network communication.
I architected the iOS app in Swift which is used by drivers, hauling water or waste products, for data collection (route waypoints, shifts, field tickets, etc.). The app collects location data in a manner similar to how Uber works (the data can be replayed later to view the route taken by the driver). Realm was used for local storage of data. AlamoFire was used for network communication.
iOS App: Movemedical
https://www.movemedical.com/product/Medical device sales, marketing, and ops teams use Movemedical when they are ready to increase sales, strengthen physician relationships and gain true inventory control and visibility.
I worked as the sole iOS developer for the app.
I worked as the sole iOS developer for the app.
iOS App: MAGNIFI
The app lets users explore their local music scene, discover new artists, connect with friends, and see more live shows. The app is a 2013 Webby Award nominee in the company of Pandora, Songza, and Vevo Mobile, and a 2013 W3 Awards Silver Winner in the Mobile Music Apps category. Featured app in the Music category on the App Store.
iOS App: Houston Dynamo
The app lets fans stay connected year-round with the official Houston Dynamo American soccer team. Users can see the latest Dynamo news, video, social media content, and more. Featured app in the Sports category on the App Store.
iOS App: PayZONE
The app is intended to provide customers and Baker Hughes personnel with a unified source of completions and production information. PayZONE facilitates the solutions process and helps to target needs through its ever-expanding catalog of products and solutions from Baker Hughes’ Completions Services.
PayZONE app users will experience an interactive rich content library that includes product overviews, catalogs, case histories, videos, the Tech Facts Handbook, and more. The "My Binders" feature functions as a virtual filing system, allowing users to store and email files directly from the app. PayZONE has also replicated the "Tech Facts Handbook" and "Technical Support Portal" within the app interface, in which the "Technical Support Ticket" connects users to the TSP for quick answers to their technical inquiries.
PayZONE app users will experience an interactive rich content library that includes product overviews, catalogs, case histories, videos, the Tech Facts Handbook, and more. The "My Binders" feature functions as a virtual filing system, allowing users to store and email files directly from the app. PayZONE has also replicated the "Tech Facts Handbook" and "Technical Support Portal" within the app interface, in which the "Technical Support Ticket" connects users to the TSP for quick answers to their technical inquiries.
iOS App: StockNerd (via Toptal)
StockNerd is a stock and portfolio tracking app which helps users learn from other investors through features such as community discussions and leaderboard.
I was the sole app developer until the app launch. The "Show HN" post showcasing the app reached number three on Hacker News.
I was the sole app developer until the app launch. The "Show HN" post showcasing the app reached number three on Hacker News.
Skills
Languages
Swift 3, Swift 4, Swift, Swift 2, Objective-C, Perl, SQL, JavaScript, CSS, HTML, Python, Java, C, C++
Libraries/APIs
Facebook iOS SDK, Twitter SDK, JDBC, RxSwift, Flurry
Paradigms
Agile Software Development, Reactive Programming
Platforms
iOS, Jakarta EE, MacOS, Android
Frameworks
Core Location, Hibernate, Spring
Tools
Xcode, Git, Autosys, FitNesse, Perforce, CVS, PuTTY, ITerm, SourceTree, Google Analytics, Adobe Photoshop, Sketch
Storage
Sybase, IBM Db2
Other
WebLogic, Dash, Vi, WebSockets, User Interface (UI), Startups, Enterprise Java Beans (EJB)
Education
2004 - 2008
Bachelor's Degree in Electrical Engineering
Indian Institute of Technology - Kanpur
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