Roman Tsisyk

Experience

1. 2025 — Now

   Senior Android Developer · BV Group

   UK company, remote from Wrocław. Sports-betting and casino apps for 10+ brands. New features and modernisation of legacy code in a large multi-module app; analytics and marketing integrations; anti-fraud and compliance; reliable, secure sign-up and login.

2. 2022 — 2024

   Software Applications Engineer III · HP IncSenior Android Developer · 2022

   HP Poly Lens — enterprise app that manages Poly headsets over Bluetooth LE. Co-developed the new multi-module app that replaced the legacy one: app size −60%, load time −30%. Custom Compose components for parity with iOS; passed an external security audit.

   • Kotlin
   • Compose
   • Bluetooth LE
   • Hilt
   • Room
   • Apollo GraphQL
3. 2021

   Software Engineer (Android) · GlobalLogic

   Mercedes-Benz vehicle connectivity app: Bluetooth data integration, in-app feedback surveys, UI fixes under high data volume.

   • Kotlin
   • Coroutines
   • RxJava
   • Bluetooth
4. 2020 — 2021

   Mobile Application Developer · Aplitt

   Built the Flutter MVP of the Kasa Stefczyka banking app and shipped it to production; secure authentication and data encryption.

   • Flutter
   • Dart
   • BLoC

• 2018 — 2020Freelance Android & web developer
• 2017 — 2018GSM Billing — SMS and VoIP/SIP consumer apps for the UK
• 2012 — 2017Devitech Web Design — QA and frontend

Selected projects

BV Group apps

Current role · NDA

Sports-betting and casino Android apps for 10+ brands, one large multi-module codebase.

HP Poly Lens

HP Inc

Enterprise Bluetooth LE app for Poly headsets and conference devices.

1M+ downloads on Google Play

Case studyGoogle Play

Mercedes Adapter

GlobalLogic · closed

Vehicle connectivity app for Mercedes-Benz: Bluetooth data integration and in-app surveys.

Case study

EU Stats

Open source · KMP

Kotlin Multiplatform app for Eurostat open data — Android, iOS and desktop.

~1,000 automated tests

Case studyGitHub

FigmaScope

Own product

Turns a Figma file into a context bundle for coding agents, plus a design-system audit.

figmascope.devCase study

Netti

Client work

Android network-diagnostics app with iperf3 compiled through the NDK.

~2,100 automated tests

Case study

Kasa Stefczyka

Aplitt

Flutter MVP of a mobile banking app for a large Polish credit union.

100K+ downloads

Case studyGoogle Play

• FollowMyMoney — copy-trading app for FELS Group GmbH, 10K+ downloadsClient work
• Job Recruiter — Flutter app for a recruitment agencyClient · NDA
• Tongue Drum Online — real-time Web Audio instrument, offline PWAPersonal
• Chrome extensions — 4 free extensions on the Chrome Web StorePersonal
• Android libraries — bleX, CryptoKit, NFC-Probe, Sunrise-Sunset-SDKOpen source
• GSM Billing apps — SMS and VoIP/SIP consumer apps for the UK2017 — 2018

Skills

Writing

• App startup — from tap to first frameAndroid · performance
• Coroutines — what the compiler actually generatesKotlin · coroutines
• Caching — when it helps, when it kills youArchitecture

Certifications

• Atlassian Agile Project ManagementProfessional Certificate — Atlassian2024
• Career Essentials in GitHubProfessional Certificate — GitHub & Microsoft2024
• Cybersecurity FundamentalsCertificate — Microsoft & LinkedIn Learning2024
• Dependency Injection with Dagger 2 and HiltAndroid advanced course2021
• Coroutines for Android MasterclassKotlin coroutines deep dive2021
• Data Structures and AlgorithmsDeep dive using Java2021
• Azure DevOps CI/CD PipelinesDevOps automation2021

FAQ

Contact