Serhii

Front-end developer

Employment type:
full-time
Age:
33 years
City of residence:
Kyiv
Ready to work:
Remote

Contact information

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Work experience

Front-end engineer

from 01.2023 to 02.2024 (1 year 2 months)
NDA (SaaS, Healthcare Product Platform), Дистанційно (IT)

Responsibilities:
• FE owner responsible for architecture and technical decisions
• Refactored legacy Angular codebase, improving maintainability and reducing technical debt (resolving/fixing: memory leaks, incorrect RxJS usage, XSS vulnerabilities);
• Migrated multiple pages from .NET to Angular and implemented new UI features;
• Integrated complex eHealth API with nested data structures and multi-step forms;
• Improved UI/UX and overall application performance based on user feedback;
• Contributed to a platform handling 2M+ visits in a year;

Technologies used:
Angular, TypeScript, RxJS, HTML, SCSS, ESLint, Prettier, Bitbucket, REST API, eHealth API, moment JS.

Front-end engineer

from 09.2022 to 01.2023 (5 months)
Safe and Reliable Healthcare (USA), Дистанційно (IT)

Responsibilities:
- Migration from AngularJS to Angular 14 as technical lead with 2 other frontend developers;
- Completely rewrote ~8 pages (mainly tables, forms, modals) with modern Angular patterns;
- Completed full migration in 4 months without prior AngularJS experience;
- Coordinated with a backend team to ensure API compatibility;

Technologies used:
TypeScript, JavaScript, Angular 14.2, RxJS, Angular Material, Git, GitHub, NgSelect, Moment JS, XLSX, Azure, MS Teams.

Front-end engineer

from 04.2021 to now (5 years)
NDA, SaaS, Compliance Platform (Israel / USA), Дистанційно (IT)

Work periods:
04.2021 - 09.2022,
02.2024 - now

Responsibilities:
• Developed and maintained features in a large Angular (v19) Nx monorepo using TypeScript, NgRx, RxJS, and Module Federation;
• Designed and implemented complex business features, enabling users to extend platform functionality (e.g. Plugin Builder and Custom Evidence Builder);
• Delivered reusable and scalable UI solutions, adopted across multiple teams;
• Contributed to the internal design system (form controls, modals, UI elements, data manipulation utilities);
• Increased test coverage (UT, Cypress), improving the platform stability;
• Performed code reviews, participated in FE architecture discussions;
• Migration app from Angular to React;

Technologies used:
Angular 19, TypeScript, JavaScript, NgRx, RxJS, Tailwind, Karma, Jasmine, Cypress, NX monorepo, Angular Material/CDK, Storybook, GitHub, Jira, Datadog, WS, Lottie, XLSX.

Education

ХТЕІ КНТЕУ

Менеджмент, Харків
Higher, from 2009 to 2015 (6 years)

Additional education and certificates

2020, 4 місяці

2020, 2023

2022, 2023

2021

2023

2023

Knowledge and skills

  • JavaScript
  • TypeScript
  • HTML
  • CSS
  • SASS
  • Angular
  • RxJS
  • NgRx
  • Redux
  • Redux Toolkit
  • Redux-Thunk
  • REST
  • REST API
  • AJAX
  • Axios
  • Tailwind CSS
  • Angular Material
  • Git
  • GitHub
  • Figma
  • React Hooks
  • React Router
  • Jasmine framework
  • Jira
  • Confluence
  • WebSocket
  • GitLab
  • ESLint
  • Prettier
  • Chrome DevTools
  • Responsive design
  • Adaptive layout
  • Cursor
  • React

Language proficiencies

  • English — above average
  • Ukrainian — fluent

Additional information

Hi,

I am a frontend Engineer with 5 years of commercial experience.
Experienced in building and scaling complex web applications in compliance and healthcare SaaS platforms.

Expertise in Angular, TypeScript, RxJS, and NgRx.
Skilled in performance optimization, refactoring legacy systems, and implementing complex business logic.
Open to working with React and expanding expertise beyond Angular ecosystem.

Proven ability to deliver scalable solutions and collaborate effectively with cross-functional teams in international environments.

I am passionate about developing a software engineer with excellent commercial experience (over 3 years, and a total of over 4 years).

About me:
- open-minded person with excellent communication skills;
- highly motivated to improve my professional skills;

I want to find a like-minded team and move forward together.

FYI. I currently live abroad, in Moldova.

Message me, and I will share my detailed CV.

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