Дмитро

DMYTRO ZUBYK
Mobile & Full-Stack Developer
[open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) | Lviv, Ukraine | LinkedIn

PROFILE
Mobile & Full-Stack developer with experience in Kotlin (Jetpack Compose), React.js, Next.js, TypeScript, and Node.js. Skilled in
building modern mobile applications, cross-platform interfaces, and full-stack systems with Next.js, Prisma, MongoDB, and
server-driven architectures. Comfortable working across mobile, backend, and frontend, with hands-on experience shipping
features end-to-end in small, fast-moving teams. Fast learner with strong problem-solving skills, attention to UI/UX quality, and
clean architecture.

EMPLOYMENT HISTORY

Full-Stack / Automation Developer, DelightCore 02/2026 – 07/2026 · Lviv, Ukraine
Insurance Broker CRM Platform
• Developed a scalable CRM platform for insurance brokers using Next.js, GraphQL, Prisma, and PostgreSQL.
• Architected and maintained Salesforce integrations for seamless synchronization of customer, employee, and insurance data.
• Delivered responsive, high-performance user interfaces with Next.js, adhering to modern frontend architecture and clean code
principles.
• Automated complex insurance enrollment, eligibility verification, and policy generation workflows for enterprise-scale
employee datasets.
• Designed and optimized a document processing and validation pipeline using Python, Salesforce APIs, AWS Lambda, and
AWS Step Functions, reducing pipeline runtime to 5–7 minutes and cutting manual involvement to near zero — manual
review was only triggered when the rules engine flagged errors in submitted documents.
• Built the rules engine responsible for automatically detecting data and document errors during pipeline execution.
Fraud-Monitoring CRM for a Betting Platform
• Contributed to a fraud-detection and monitoring CRM system for a betting platform, built with Next.js, GraphQL, Prisma,
PostgreSQL, NestJS, and RabbitMQ.
• Implemented backend services and event-driven workflows (via RabbitMQ) to support real-time fraud-activity monitoring.
• Built full-stack features across the data pipeline, from backend services to the CRM interface used by the fraud-review team
(feature specifics covered by NDA).
Full-Stack Developer, Appexoft 06/2025 – 02/2026 · Lviv, Ukraine
• Contributed to a USA-based SaaS platform for cleaning and pet care services, used by up to 1,000 customers.
• Developed and maintained new features following clean code principles and established UI/UX guidelines.
• Integrated external services and REST APIs (CleanCloud, Swifto) to extend platform functionality and improve operational
workflows.
• Built a dynamic pricing page using the CleanCloud API, calculating pricing separately for three distinct New York City
service areas.
• Added a GitHub-style versioning system to the admin panel, letting the team edit FAQ content dynamically while keeping a
full, browsable history of changes.
Mobile Developer / Full-Stack Developer, Just Jimmy LLC & Gimmir LLC 01/2025 – 07/2025 · Lviv, Ukraine
Concurrent roles on two affiliated companies' projects — mobile app development for Just Jimmy LLC alongside full-stack web development for
Gimmir LLC.
Just Jimmy LLC — Mobile (Kotlin, Jetpack Compose)
• Built the Android application from the ground up across 20+ screens, working alongside an iOS developer and a project
manager.
• Implemented app navigation, state management, and REST API integrations to support scalable, maintainable features.
• Built responsive, reusable UI components with Jetpack Compose and Material Design 3, delivering dynamic, API-driven user
experiences.
• Optimized app performance and screen-transition navigation, improving overall responsiveness across the application.
• Contributed to the iOS application by implementing and maintaining features in Swift, ensuring a consistent cross-platform
experience.
• App published on Google Play: play.google.com/store/apps/details?id=com.jimmycoach.jimmy
Gimmir LLC — Full-Stack (Next.js, Prisma, MongoDB)
• Developed full-stack web applications using Next.js, Prisma, MongoDB, and TypeScript, following modern software
development best practices.
• Designed and implemented REST and GraphQL integrations, building dynamic, data-driven user interfaces with efficient
client-server communication.

• Built responsive, reusable UI components with Next.js, Tailwind CSS, and Styled Components, ensuring a consistent user
experience across devices.
• Developed backend functionality using Next.js API Routes, including authentication and authorization flows, CRUD
operations, input validation, and business logic.
Junior Mobile Developer, ExtelaSoft 04/2023 – 12/2024 · Lviv, Ukraine
• Developed Android features for the Indie Town app using Kotlin, MVVM, Coroutines, and Jetpack Compose, in a 4-person
team (Android, iOS, backend, and a project manager).
• Shipped a link-preview feature for posts and added like functionality for comments and comment replies.
• Built a dedicated Venue Guide screen for discovering nearby venues (from the user's location or another venue), integrating
the Google Maps, YouTube, and Spotify APIs.
• Handled a large share of bug fixes and stability improvements, and contributed to architectural decisions and code reviews
within an Agile team.
• App published on Google Play: play.google.com/store/apps/details?id=com.incubator.indietown

EDUCATION
Bachelor's Degree, National University "Lviv Polytechnic" 2022 – 2026
Educational program: Computing Intelligence of Smart Systems
Bachelor's thesis: Information system for automated student attendance tracking using computer vision technologies
Practical Java, Softserve Academy 05/2024 – 07/2024
Practical Java course covering Spring Framework, Spring Boot, REST API development, OOP design, Java Collections, JDBC/SQL,
Maven, Git, unit testing, and debugging.
Java Fundamentals, Softserve Academy 07/2023 – 09/2023
Foundational course covering OOP, core Java syntax, collections, exception handling, file I/O, multithreading, and basic algorithms.
HTML5 / CSS3 / JavaScript Fundamentals, Softserve Academy 04/2023 – 04/2023
Core web development: HTML5, CSS3, responsive layouts, JavaScript (ES6+), DOM manipulation, events, and asynchronous
programming.

SKILLS
Languages & Frameworks: Kotlin, TypeScript, JavaScript, Java, React.js, Next.js, Node.js (NestJS, Express.js), Jetpack Compose
(MVVM), basic React Native, Python (basic + AWS Lambda, ML)
APIs & Databases: REST, GraphQL, Next.js API Routes, RabbitMQ, MongoDB, PostgreSQL, MySQL
Cloud: AWS (S3, DynamoDB, Lambda, Step Functions, CloudWatch), Google Cloud (VM, Cloud Storage, Cloud Functions)
Tools & Testing: Git, GitHub, Firebase, basic Docker, CI/CD basics, Jest, React Testing Library, basic Cypress, manual testing
Architecture & Concepts: MVVM, component-based architecture, client-server architecture, modular monolith, microservice
architecture

LANGUAGES
Ukrainian — Native
English — C1
Polish — A2