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Андрій
Android-розробник
- City of residence:
- Lviv
- Ready to work:
- Kyiv
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ANDRII PUHACH
Senior Android Developer
📞 [open contact info ](look above in the "contact info" section) 📧 [open contact info ](look above in the "contact info" section) 🔗 LinkedIn
PROFESSIONAL SUMMARY
Senior Android Developer with 11+ years of commercial experience delivering mobile applications
across energy, logistics, retail, POS, and enterprise domains. Strong expertise in Kotlin, Android
SDK, modern Android architecture, and full-cycle product delivery. Experienced in technical
leadership, mentoring engineers, architecture design, stakeholder communication, and building
business-critical mobile solutions.
CAREER HIGHLIGHTS
● 57k+ daily active users in Yasno Mobile
● Led Android team of up to 10 engineers
● Re-engineered a legacy C++ taxation and discount calculation engine
● Integrated POS terminals, barcode scanners, receipt printers, payment devices and turnstiles
TECHNICAL STACK
Languages: Kotlin, Java
Android: Jetpack Compose, Android Jetpack, Coroutines, Flow, Modularization, WorkManager
Architecture & Leadership: Clean Architecture, MVVM, Technical Leadership, Architecture Design,
Team Mentoring, Hiring & Technical Interviews, Code Reviews, Stakeholder Communication
Libraries & Services: Dagger/Hilt, Retrofit, OkHttp, Vico (Charts) Firebase Crashlyitics, Analytics
Testing & Quality: JUnit, Unit Testing, Code Coverage, SonarQube
Platforms & Integrations: POS Systems, Payment Devices, Barcode Scanners, Receipt Printers,
Turnstiles, Hardware Integrations
Build & Delivery: Gradle, CI/CD, GitHub Actions, GitLab CI, Jenkins, Azure DevOps
EDUCATION
M.Sc. Software Engineering — Lviv Polytechnic National University (2016–2018)
B.Sc. Software Engineering — Lviv Polytechnic National University (2012–2016)
PROFESSIONAL EXPERIENCE
DTEK / YASNO — Senior Software Engineer (2023 – Present)
● Developed and maintained YASNO Mobile, a customer-facing energy platform serving 57k+
daily active users.
● Designed and delivered loyalty program functionality used by energy customers.
● Implemented utility payment workflows through Portmone and PrivatBank integrations.
● Designed and delivered monitoring and analytics functionality for solar power stations and
battery storage systems.
● Drove gradual adoption of Jetpack Compose and prepared legacy screens for migration.
● Led Gradle modernization efforts, including build tooling and code coverage improvements.
ELEKS — Senior Android Developer (Lead) / Middle Android Developer (2017 – 2023)
● Led an Android team of up to 10 engineers on a UK fitness and leisure platform.
● Acted as the primary Android engineer on a Optilog logistics project driving architecture
decisions from project inception.
● Developed and maintained POS solutions for more than four years.
● Re-engineered critical taxation, pricing, and discount business logic from a legacy C++
platform.
● Designed Kotlin DSL abstractions that simplified hardware integrations and reduced
implementation complexity.
Teamvoy — Android Developer (2015 – 2017)
● Developed Android applications for social networking, fintech, and commercial products.
● Implemented networking, local storage, and business-critical mobile functionality across
multiple domains.
● Worked with MVP and MVVM architectures in production environments.
● Participated in requirements analysis, implementation, testing, release, and long-term product
maintenance.
● Collaborated directly with customers and cross-functional teams to deliver business
requirements.
SELECTED PROJECTS
● YASNO Mobile — Energy management platform (57k+ DAU)
● David Lloyd Clubs — UK fitness and leisure platform
● POS & Self-Service Kiosk Platforms — Hardware-integrated retail solutions
Senior Android Developer
📞 [
PROFESSIONAL SUMMARY
Senior Android Developer with 11+ years of commercial experience delivering mobile applications
across energy, logistics, retail, POS, and enterprise domains. Strong expertise in Kotlin, Android
SDK, modern Android architecture, and full-cycle product delivery. Experienced in technical
leadership, mentoring engineers, architecture design, stakeholder communication, and building
business-critical mobile solutions.
CAREER HIGHLIGHTS
● 57k+ daily active users in Yasno Mobile
● Led Android team of up to 10 engineers
● Re-engineered a legacy C++ taxation and discount calculation engine
● Integrated POS terminals, barcode scanners, receipt printers, payment devices and turnstiles
TECHNICAL STACK
Languages: Kotlin, Java
Android: Jetpack Compose, Android Jetpack, Coroutines, Flow, Modularization, WorkManager
Architecture & Leadership: Clean Architecture, MVVM, Technical Leadership, Architecture Design,
Team Mentoring, Hiring & Technical Interviews, Code Reviews, Stakeholder Communication
Libraries & Services: Dagger/Hilt, Retrofit, OkHttp, Vico (Charts) Firebase Crashlyitics, Analytics
Testing & Quality: JUnit, Unit Testing, Code Coverage, SonarQube
Platforms & Integrations: POS Systems, Payment Devices, Barcode Scanners, Receipt Printers,
Turnstiles, Hardware Integrations
Build & Delivery: Gradle, CI/CD, GitHub Actions, GitLab CI, Jenkins, Azure DevOps
EDUCATION
M.Sc. Software Engineering — Lviv Polytechnic National University (2016–2018)
B.Sc. Software Engineering — Lviv Polytechnic National University (2012–2016)
PROFESSIONAL EXPERIENCE
DTEK / YASNO — Senior Software Engineer (2023 – Present)
● Developed and maintained YASNO Mobile, a customer-facing energy platform serving 57k+
daily active users.
● Designed and delivered loyalty program functionality used by energy customers.
● Implemented utility payment workflows through Portmone and PrivatBank integrations.
● Designed and delivered monitoring and analytics functionality for solar power stations and
battery storage systems.
● Drove gradual adoption of Jetpack Compose and prepared legacy screens for migration.
● Led Gradle modernization efforts, including build tooling and code coverage improvements.
ELEKS — Senior Android Developer (Lead) / Middle Android Developer (2017 – 2023)
● Led an Android team of up to 10 engineers on a UK fitness and leisure platform.
● Acted as the primary Android engineer on a Optilog logistics project driving architecture
decisions from project inception.
● Developed and maintained POS solutions for more than four years.
● Re-engineered critical taxation, pricing, and discount business logic from a legacy C++
platform.
● Designed Kotlin DSL abstractions that simplified hardware integrations and reduced
implementation complexity.
Teamvoy — Android Developer (2015 – 2017)
● Developed Android applications for social networking, fintech, and commercial products.
● Implemented networking, local storage, and business-critical mobile functionality across
multiple domains.
● Worked with MVP and MVVM architectures in production environments.
● Participated in requirements analysis, implementation, testing, release, and long-term product
maintenance.
● Collaborated directly with customers and cross-functional teams to deliver business
requirements.
SELECTED PROJECTS
● YASNO Mobile — Energy management platform (57k+ DAU)
● David Lloyd Clubs — UK fitness and leisure platform
● POS & Self-Service Kiosk Platforms — Hardware-integrated retail solutions
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The candidate's resume is posted at https://www.work.ua/resumes/18725856/