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Malevich is a strong team of developers . We've been working since 2007 and have created over 300 projects worldwide.
We have deep expertise in web and mobile app development, web and mobile design, as well as business automation.
What we offer:
Web development and Mobile Development
E-commerce Web Development
API development and integration
Corporate software development, ERP
Custom CRM development
Web design and mobile design
Blockchain development
DevOps
Technology Stack:
• JS Technologies: React.js, React Native, React Hooks, Node.js, Redux, React Native, jQuery, Ext JS, Material-UI, SPA, Flutter.
• AWS: Amazon Lambda, Amazon Connect, Amazon S3.
• Databases: MySQL, PostgreSQL, Firebase, Mongodb, Sphinx, Redis, Dynamo, RabbitMQ, Kafka.
• Page creation: HTML, CSS, LESS, SASS, Bootstrap, AJAX, JSON.
• DevOps and other technologies: Linux, Git, Docker, GraphQL, Composer, GRPC (Protobufs), REST, API, sockets, blockchain.
Payment Systems: PayPal, Stripe, Square, Authorize.net, Payoneer, Wise, Liqpay, Payoneer, Skrill, WePay, Binance Pay, Adyen, Dwolla.
Why choose us?
50+ professional team members.
Top Rated on Upwork.
Full transparency at all stages of development.
Instant communication.
Direct interaction with the development team.
Team scaling on demand.
Guaranteed support after project launch.
Predictable cost and no additional expenses.
What they say about us
https://clutch.co/profile/malevich#summary
457
About Me:
10+ as a CTO and have been in the IT market since 2007. Our team consists of professionals: backend and frontend developers, designers, testers, and project managers. I have a Top rated on Upwork. Our team has successfully completed over 300 projects of varying complexity.
Approaches to Development:
The client is our partner. We will create a product that will help your business scale. We strategically think and work to make your goals a reality. Our fast pace is ensured by a team that includes project managers, developers, testers, team leads, and UX/UI designers. We ensure transparency in the process using Jira and organize regular progress discussions with the client.
Expertise:
Our expertise lies in developing custom websites, mobile applications, SaaS solutions, and E-commerce projects:
✔️ JavaScript technologies: React.js, React Hooks, Node.js, Redux, React Native, jQuery, Ext JS, Material UI, SPA, Strapi, Gatsby.✔️ API - RESTful, AWS integration and development✔️ Databases: MySQL, PostgreSQL, Firebase, Sphinx, MongoDB, Redis✔️ Page creation: HTML, CSS, LESS, SASS, Bootstrap, AJAX, JSON✔️ DevOps and other technologies: Linux, Git, Docker, GraphQL, Composer, GRPC (Protobufs), Docker, Sockets, Blockchain✔️ TypeScript
Approaches to Design:
The success of a project depends on how well its design is created. Our team approaches design decisions very meticulously:
✍ Deep analysis of user behavior allows us to fully understand needs and preferences, enabling us to create more relevant and attractive solutions.
We specialize in UX/UI solutions. We create interfaces that are not only visually appealing but also easy to use, thereby increasing user satisfaction.
Our non-traditional approach to creating user interface design emphasizes brand individuality and helps stand out among others, creating a memorable image.
Our goal is for every user to feel comfortable and confident when using your product or service
79
Denis Efremov
Highlights Summary
● iOS Development: Objective-C (7 years), Swift (8), SwiftUI (3), Vapor (3), Xcode (14), Instruments (14)
● Solid knowledge of all classic design patterns (MVC, MVP, MVVM, VIPER, Clean Architecture, etc.) and best
practices (POP, SOLID, DRY, KISS, YAGNI)
● Strong Knowledge of Apple's Human Interface Guidelines, experience with creating UI using IB, in code and in
SwiftUI
● Full-stack and client-server iOS development (3 years): SwiftUI, Vapor, Postgres/MongoDB, Heroku and AWS
● Native iOS Frameworks: Foundation, UIKit, Core Data, Core Animation, Core Graphics, Core Image, Core ML,
Create ML, Core Location, MapKit, Security, LocalAuthentication, Core Motion, SceneKit, CallKit,
NotificationCenter, SwiftUI, Combine
● Third-party Frameworks and APIs: Alamofire, RxSwift, Swinject, Firebase, Realm, SwiftKeychainWrapper
● Test Automation: Unit/UI Tests in Xcode, SpecFlow and Gherkin, Karma, Jasmine
● Deep knowledge and solid hands-on experience with CI/CD pipelines: Jenkins, Fastlane, Xcode Cloud, GitHub
● Databases: SQL Server, MySQL, NoSQL, Postgres, MongoDB, AWS DynamoDB, Access, FoxPro
● Earlier full-stack development experience: C#, .NET, ASP.NET, Entity Framework 6, WCF, Web API, MVC,
AngularJS, Bootstrap, HTML5, CSS3
● Adobe Products: Photoshop, Dreamweaver, InDesign, XD
● Extensive experience with Agile, knowledge of Jira, Confluence
Work Experience
Feb. 2021 – May 2023
Senior iOS Developer
HSBC, Vancouver, B.C.
Contract, Full-time: working remotely in a team based in Vancouver BC, collaborating with
teams from US, UK, Hong Kong, India and Poland
Responsibilities/achievements:
● Developed global digital solutions for 37+ million customers worldwide
● Implemented new features and online experiences for HSBC Mobile Banking, HSBC
UK, HSBC US and HSBC Canada apps
● Worked on new features and improvements in multiple frameworks and libraries:
messaging, authentication, accounts, wealth management, money transfer
● Worked in a UK-based team on the “QR code Digital Secure Key device transfer”
feature
● In a Canadian team, implemented Chinese language support for Canadian market
● Implemented “Transfers and Contributions” feature for the Canadian market
● Collaborated with multiple teams (US, HK, China, India), integrated Wealth Dashboard
feature into HSBC (US) mobile app
● Integrated Zelle API into “Move Money” module
Jan. 2019 – Nov. 2019
Senior iOS Developer
Freightera Logistics Inc., Vancouver, B.C.
Full-time: design and development of Freightera iOS Booking App
Languages/technologies/frameworks used: Swift 4 and 5 with Xcode 10, Unit and UI tests,
WebKit, SwiftKeychainWrapper, Security, LocalAuthentication, CocoaPods, JWT
authentication, Laravel RESTful API, Git with Sourcetree, JIRA.
Tasks completed include:
● Gathering requirements from the stakeholders
● UI and wireframe prototyping with Adobe XD
● Design and development with Xcode 10
● Performance tuning with Instruments
● Unit and UI tests in Xcode
● RESTful API end-point design and implementation with Laravel
● Managing testers with TestFlight
● Publishing and updating the app at App Store
Jan. 2017 – Jan. 2019
Senior Mobile Developer
Frozen Mountain Software, Surrey, B.C.
Full-time: building WebRTC applications for iOS, Android, Windows and UWP platforms
Languages/technologies/frameworks used: Swift 3 and 4,Objective-C, Xcode 8 and 9,
AVFoundation, ARKit, SceneKit, CallKit, NotificationCenter, UIKit, Java, C#, Xamarin in Visual Studio, JavaScript.
Tasks completed include:
● Working closely with Project Manager to gather and document requirements
● Designing and developing RTC solutions for iOS, Android and UWP platforms
● Integrating internal WebRTC SDKs and libraries into production applications and APIs
● Troubleshooting existing WebRTC applications
Mar. 2014 – Dec. 2016
Senior Software Developer
LifeLabs, Burnaby, B.C.
Full-time: design and development of a suite of electronic health care products for iOS and
Windows platforms. Web application development with .NET technologies.
Languages/technologies/frameworks used: Objective-C, Swift 2 and 3, Xcode 6, 7, and 8,
C#, .NET, ASP.NET, EF6, WCF, Web API, MVC, AngularJS, Bootstrap, HTML5, CSS3.
Tasks completed include:
● Designing and developing new features for MyeHealth iOS app
● Designing and developing new features and add-ons to Launchpad (client-side Web
application for care providers) and Rover (back-end services)
● Working on a brand new product, called eOrdering (electronic medical care ordering)
● Designing and developing a brand new product, called MyResults (client-side Web
application for Ontario clients)
● Designing and developing a brand new product, called eSubscribe (to accommodate
Canadian Anti-Spam Legislation)
May 2012 – Feb. 2014
Senior PHP Developer
Freightopolis, Montreal, Quebec
Full-time contract (remote): design and development of an online shipping platform. Tasks
completed and under development include:
● Implemented an algorithm allowing skid spot optimization for Less-than-Truck loads and
later improved the algorithm adding skid stacking option.
● Designing and developing major logistics and operational system modules.
● Integrating third-party APIs and Web services.
● Designing and maintaining system DB.
● Front-end development, jQuery, CSS, and AJAX.
● Back-end development with PHP frameworks.
Mar. 2003 – May 2012
Senior Software Developer
E-Port Systems, Vancouver, B.C.
For 9 years, was responsible for the full software development life cycle at the company:
design, development, testing, debugging and maintenance of the touch-interactive
multi-platform systems. Projects completed:
● Developed touch-interactive multi-purpose solutions for Windows and iOS platforms.
Tools used: Visual Studio, Flash CS5.5 Professional, Xcode. Languages: C/C++, C#,
Objective-C, ActionScript 2.0 and 3.0.
● Designed and developed back-end for the software systems. Servers: Apache (both,
Windows and Linux), IIS, Flash Media Server 3.0, Mail-server, FTP-server. Languages:
PHP and Perl. Web services that support the client-side are written with: SOAP, JSON,
XML, and REST.
● Designed and developed databases to capture all the touch-tracking and user data.
Databases: MySQL, SQLite, MS SQL Server.
● Implemented video capture and video playback functionality for the system using Flash
Media Server 3 (current version) and DirectShow (older version)
● Completed video host playback that helps the user with navigation through the
applications (using Flash CS5.5 Professional, ActionScript 2.0 and 3.0, and Video
Encoder)
● Developed on-line credit card processing functionality for the system using C#,
ActionScript, PHP, and MSXML library
● Designed, implemented, and maintained the back-end database that holds all the data
relative to the on-line transactions, video- and photo-postcards, merchandise, and
customers
● Built the Windows XP Embedded OS images for the touch-screen interactive kiosks to
run the software (using the Windows Embedded Studio tools)
Education
Present Bachelor of Technology in Computer Systems, part-time
British Columbia Institute of Technology
Sep. 2000 – May 2002 Computer Systems Technology, Diploma
British Columbia Institute of Technology, Burnaby, BCIT
Sep. 1989 – June 1995 Engineer-Physicist, Master’s Degree
The Urals State Technical University, Ekaterinburg, Russia
References
Excellent references are available upon request.
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I have been working in the IT field for more than 12 years, I have extensive experience in the development of software products of any kind, as well as competencies in related areas.
Important:
If you have any doubts about whether I communicate with you, please write to me in private messages, since fakes of my account have appeared lately, thank you for understanding.
Hybrid mobile apps · Apps for iOS (iPhone and iPad)
Mariupol, Ukraine
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