Oleh

Oleh Ivoniuk - Software engineer
email: [відкрити контакти](див. вище в блоці «контактна інформація»)
ln: [відкрити контакти](див. вище в блоці «контактна інформація»)

Work Experience:
2023 - November 2025 - Software engineer - EPAM Systems
November 2025 - Present - Software engineer - Dev.Pro

Languages:
Ukrainian – Native
English – C1
French - B1

Skills:
- Core Frontend: JavaScript, TypeScript, React, Next.js
- State Management: Redux Toolkit, MobX
- Styling: CSS, SASS/SCSS, Tailwind CSS, Styled Components, Bootstrap,
MUI, A11
- Testing: Vitest, React Testing Library
- Build Tools: Vite, NPM, Yarn
- Backend Basics: Node.js, PostgreSQL, Python 13+, Fast API
- DevOps & Collaboration: Git, GitHub, GitLab, Docker, Jira, Azure
DevOps, Agile, Scrum
- CMS & Analytics: Contentstack, Google Analytics
- AI Tools: GitHub Copilot, Cursor, Gemini, Antigravity, Claude Code

Projects:

1. NDA Project (Fintech corporation)

Technologies: React, TypeScript, Jest, Styled Components, Python,
PostgreSQL, Jira, Swagger, SonarQube, Docker, Lovable, Vertex AI

Responsibilities:
- Led frontend development (2 Frontend Developers).
- Set up development tools and project architecture from scratch.
- Designed and implemented reusable components based on business
requirements.
- Conducted client demos and presented new features for the client.
- Conducted and participated in code reviews.
- Maintained project documentation.
- Collaborated closely with Backend team member on early stages of the project,
actively contributed on the latest stages.
- Worked with Business Analysts to clarify Acceptance Criteria (AC).
- Fixed bugs and improved existing features.
- Estimated tasks and participated in sprint planning.
- Wrote unit tests for React components.

Achievements:
- Integrated functionality of the core agent, defined the UI design for for the
orchestration platform.
- Created different modes (coach, research, SME) separately from agents.
- Integrated Third party services, such as Confluence, Github (pulling, pushing to the
platforms, streaming with SSE)
- Developed E2E features (Model selection, temperature, Brownfield ingestion,
Concurrency Check, Discovery mode (with different focus modes: SME, Reaseach,
Coach)
- Defined API contracts for the features.
- In a short term became a key developer recognized by the customer.

Description:
AI-powered Agents Orchestration platform designed to enhance the Software
Development Life Cycle (SDLC) by integrating with various external tools and
services.

Team size: 7 persons: FE - 2; FS - 1; BA - 1; BE - 2, PM - 1.

2. Philips Medical

Technologies: NextJS, ReactJS, Typescript, Jest, SASS, Contenstack, Azure
DevOps, Swagger, SonarQube.

Responsibilities:
- Creating new components according to the requirements.
- Participating in code review.
- Maintaining documentation.
- Bug fixing.
- Task estimation.
- Writing units tests for components.

Description:
CMS platform migration to headless.

Team size: 37 persons: FE - 7; FS - 3; UX - 1; BA - 3; DM - 2; AQA - 3; QA - 7;
Contentful - 2; PM - 3; Others - 6.
 3. Oracle Health

Technologies: ReactJS, Typescript, Jest, SASS, Javascript.

Responsibilities:
- Communication with Dev Lead, and other dev teams.
- Development of functionality.
- Implementation of UI.
- Test coverage.
- Bug fixing.
- Participated in daily scrum meetings.
- Task estimation.

Description:
Under the NDA.

Team size: 173 persons.

4. Vue Entertainment Ltd.

Technologies: NextJS, ReactJS, Redux, Typescript, Jest, Sinon, SASS, Sitecore
JSS, Azure DevOps, Swagger, SonarQube.

Responsibilities:
- Creating new components according to requirements;
- Participating in code review;
- Maintaining documentation for code, APIs, and development processes to ensure
clarity and accessibility for team members;
- Bug fixing;
- Task estimation.
- Writing unit tests for components;

Description:
Project for Vue Entertainment aimed to build the solution to upgrade from Sitecore
8.x to v10, frontend part on Next.js, with Microservice architecture and create Mobile
App on Flutter with unified codebase for different locations.

Team size: 25 team members (FE team - 4 people).

5. Novocure; Life Sciences & Healthcare

Technologies: TypeScript, SASS/SCSS, Redux Toolkit, ReactJS, Material UI, Jest,
ESLint, Visual Studio Code, Azure DevOps, SAP.
Responsibilities:
- Improving optimizations with react memo and lazy loading;
- Maintaining documentation for code, APIs, and development processes to ensure
clarity and accessibility for team members;
- Writing unit tests for React components;
- Creating new components according to requirements;
- Participating in code review;
- Bug fixing;
- Task estimation.

Description:
Enable client’s provider experience teams to deliver the optimal patient experience
and provide time-sensitive information & streamline interactions with health care
physicians (HCPs), allowing client to better facilitate patient care.
Team size: 22 persons: FE - 5; BE - 6; UX - 4; BA - 2; DM - 1; QA - 2; DevOps - 1;
Architect - 1.

6. DogHotel

Tech stack: TypeScript, Redux, React Router, ReactJS, Node.js, JavaScript, JIRA,
Jenkins, Gitlab

Responsibilities:
- Bug fixes and feature enhancements;
- Writing Unit Tests for existing components;
- Creating new components according to requirements;
- Communicated directly with the customer to change some app functionality for
better performance & user experience;
- Code refactoring;
- Migrating JS to TS;

Description:
The application serves as a platform for a pet hotel and rescue shelter designed for
individuals unable to travel with their pets, thus ensuring professional care in their
absence .

Team size: Web developers: 7 , Back-end developers: 3, QA: 7

Education:
- 2013-2017 – Ivano-Frankivsk National Technical, University Oil and Gas
Bachelor’s degree “Electrical Engineering”;
- 2022-2024 Ivano-Frankivsk National Technical, University Oil and Gas Master’s
degree “Software Engineering”.
Certifications:
- Content Modeling with Contenstack (9 Sep 2025);
- Oracle Cloud Infrastructure AI Foundations Associate (10 Feb 2025);
- Oracle Cloud Infrastructure Foundations Associate (8 Feb 2025);
- Antropic AI Fluency: Framework & Foundation (24 Jun 2026);
- Antropic Claude 101 (26 Jun 2026);
- Antropic Code In Action (28 June 2026);
- Antropic Introduction To Agent Skills (29 Jun 2026);
- Antropic Introduction To Model Context Protocol (3 Jul 2026).