Олексій

Oleksii Fedorchak

Senior Android Developer

Summary of Senior Android Developer with 7+ years of experience in building and supporting production-
Qualifications ready Android applications across different domains. Experienced in driving technical quality
across the team, mentoring developers, and acting as one of the main reviewers responsible for
merging production changes. Worked on improving code structure, delivering new features, and
ensuring smooth technical execution. Contributed to planning, refinement, and continuous
improvement of the product.

Skills
Programming Languages/Technologies Frameworks
 Android SDK  Retrofit, OkHttp, Ktor
 Jetpack Compose  Google APIs/Firebase APIs/Huawei APIs
 Java  Dagger 2/Koin/Kodein
 Kotlin  Firebase Crashlytics & Analytics
 Software Architecture  NewRelic
Design/SOLID/Design Patterns  Stripe
 MVP/MVVM/MVI  Video streaming (Vonage, Azure
 Coroutines & Flow / RxJava Communication Services)
 Gradle/Kotlin DSL  Android Accessibility (TalkBack)
 Git
 CI/CD pipelines (Jenkins)
 Code review as quality gate
Development Tools
 Room  Android Studio
 Unit testing  Figma
Methodologies Testing Tools
 Agile  Junit
 Scrum  Mockito
 Kanban  Sonarqube
 Pair Programming

Experience

Telemedicine
Project Description: The app is a multinational telemedicine and virtual healthcare platform headquartered in the
United States. It provides on-demand remote medical care through video and telephone
consultations, medical opinions, analytics, telehealth devices, and licensable platform services.
Customer: US
Involvement Duration: 4 years
Project Role: Senior Android Developer
Responsibilities:
 Architecture and design
 Shared knowledge and mentored team members
 Analyzed and clarified requirements
 Acted as core code reviewer (“Code Review Hero”) responsible for production merges
 Estimated, prioritized, and distributed tasks
 Managed and contributed to multiple sub-projects in parallel
 Developed code ensured maintainability and scalability
 Performed unit testing
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 Supported the product and maintaining documentation
Project Team Size: 8-10 team members
Tools & Technologies: Kotlin, Java, Android SDK, Coroutines, Gradle, Git, CI/CD (Jenkins)

Military App
Project Description: The battlefield reconnaissance and coordination system is a distributed geospatial information
platform that enables users to collect data about objects in space, manually or through various
technical reconnaissance means, and to exchange that data and their own location via low-
bandwidth radio communications for further coordination of joint actions.
Customer: Ukraine
Involvement Duration: 1 year
Project Role: Senior Android Developer
Responsibilities:
 Participated in feature ideation, planning, and refinement of requirements
 Proposed implementation approaches and technical solutions
 Designed and developed features end-to-end, from architecture to release
 Collaborated closely with stakeholders and designers to align product and technical
decisions
 Ensured code quality, maintainability, and adherence to best practices
Project Team Size: 5 team members
Tools & Technologies: Kotlin, Jetpack Compose, Multi-module architecture, MVI, Coroutines, Gradle

Musical App
Project Description: The app empowers live performers to connect with their fans and manage their careers directly
from mobile devices. It serves as an all-in-one platform for artists, venues, and fans. Designed
to support artists in monetizing their performances, engaging with fans, and making data-driven
decisions about live events.
Customer: France
Involvement Duration: 4 months
Project Role: Middle Android Developer
Responsibilities:
 Developed and maintained Android features for live streaming of performances
 Implemented real-time streaming, and related UI components
 Ensured smooth performance and stability of app features on different devices
 Worked with network APIs for fetching artist, event, and fan data
Project Team Size: 4 team members
Tools & Technologies: Java, Android SDK, Vonage video streaming, Stripe, Git

Medical App
Project Description: Free online platform for finding doctors and booking appointments. Provides information about
medical specialists and healthcare institutions, helping patients select the right doctor or clinic
and schedule appointments efficiently. Focused on improving patient experience and
accessibility of healthcare services.
Customer: Ukraine
Involvement Duration: 6 months
Project Role: Middle Android Developer
Responsibilities:
 Designed and implemented end-to-end delivery flow for medications
 Developed and maintained related UI components for a smooth user experience
 Collaborated with backend team for API integration and data consistency
 Participated in code reviews and ensured adherence to coding standards

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Project Team Size: 8 team members
Tools & Technologies: Kotlin, Android SDK, MVVM, Coroutines, Kodein, Google Maps

Online Payment App
Project Description: Interbank electronic payment system specializing in delivery services and online bill payments
for various goods and services using Visa and MasterCard international payment cards. The
company has been operating since 2002 and is a market leader in electronic payments.
Customer: Ukraine
Involvement Duration: 2 years
Project Role: Junior/Middle Android Developer
Responsibilities:
 Developed and maintained core Android features of the payment app
 Implemented UI components, network integration, and payment flows
 Ensured code quality and stability of the application
 Mentored a junior developer and conducted code reviews
 Contributed to the development of the payment SDK, including releasing new
versions
Project Team Size: 6 team members
Tools & Technologies: Java, Android SDK, MVP, RxJava, Dagger 2, Unit testing

Certifications ELEKS Software Engineering Camp
2017

Education Bachelor received
Ivano-Frankivsk National Technical University of Oil and Gas
System engineering
Graduated in 2019

Master received
Ivano-Frankivsk National Technical University of Oil and Gas
Software engineering
Graduated in 2021

Contact Email: [відкрити контакти](див. вище в блоці «контактна інформація»)
LinkedIn: [відкрити контакти](див. вище в блоці «контактна інформація»)

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