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Oleksii

Front-end програміст

Considering positions:
Front-end програміст, Full stack розробник, React developer
Employment type:
full-time, part-time
Age:
40 years
City of residence:
Odesa
Ready to work:
Remote

Contact information

The job seeker has entered a phone number , email and LinkedIn.

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Work experience

Front-end програміст

from 07.2024 to 12.2024 (5 months)
Uppeople, Київ (IT)

Backend developer

from 02.2024 to 07.2024 (5 months)
Cryptobank, Дистанційно (IT)

development of payment module and balance management

Frontend developer

from 08.2022 to 02.2024 (1 year 6 months)
SDH LLC, Харків (IT)

Team Lead Frontend

from 09.2021 to 08.2022 (11 months)
ACCORD GROUP, Дистанційно (IT)

Team Lead Frontend (+Co-founder)

from 12.2019 to 09.2021 (1 year 9 months)
Attarius Network, Дистанційно (IT)

Team Lead Frontend

from 08.2017 to 12.2019 (2 years 4 months)
ООО "УкрТех-ИНФО", Миколаїв (IT)

Frontend Developer

from 06.2015 to 08.2017 (2 years 2 months)
MORRIS PROCESSING LTD, Дистанційно (IT)

Full-stack Developer

from 11.2009 to 08.2015 (5 years 9 months)
UpworkUpwork, Дистанційно (IT)

IT Professional

from 09.2007 to 04.2008 (7 months)
LegalLegal, Одеса (Нерухомість)

Education

Odessa State University of Internal Affairs (Bachelor's degree) 2010-2014

Financial and economic security, Одеса
Unfinished higher, from 2010 to 2014 (4 years)

Odessa National Maritime University (Bachelor's degree) 2000-2006

КСФ, Одеса
Unfinished higher, from 2000 to 2006 (6 years)

Knowledge and skills

  • React
  • JavaScript
  • CSS
  • HTML
  • Git
  • SASS
  • Figma
  • GitHub
  • Redux
  • TypeScript
  • Bootstrap
  • Node.js
  • Webpack
  • Gulp
  • Adobe Photoshop
  • Vue.js
  • Next.js
  • MongoDB
  • Mongoose
  • ECMAScript
  • Material UI
  • React Native
  • Firebase
  • TailwindCSS
  • React Query
  • React Hook Form
  • React testing library
  • Brain.js
  • Vite.js
  • Jest
  • WebSocket
  • Socket.IO
  • RESTful Web Services
  • Electron
  • MySQL
  • ESLint
  • Prettier

Language proficiencies

  • Ukrainian — fluent
  • Russian — fluent
  • English — above average

Additional information

About Me
I am a Senior Frontend Engineer & Technical Lead with 10+ years of experience in web and mobile development. My expertise covers projects of various sizes, from startups to enterprise-level applications.

•Proven leadership – Led teams and built two CRM systems from scratch.
•Expert in UI/UX – Creating fast, scalable, and user-friendly interfaces.
•Strong problem-solving skills – Proactively identifying and implementing the best solutions.
•Team player – Excellent communication and conflict resolution skills.
•Worked with international teams in distributed environments.

I ensure my code meets the highest standards:
•Readability – ESLint, Prettier, clear structure.
•Scalability – Microservices, FaaS/BaaS, modular architecture.
•Best Practices – SOLID, DRY, KISS principles.
•Performance – Continuous optimization and refactoring.
•Reliability – Fail-safe architecture and fault tolerance.

Example of my work: https://apps.apple.com/ua/app/attarius-wallet/id1594607620
I am open to new opportunities, ready to bring my expertise to the next project!

Employment history
Technical Adviser | ITernal Group (10.2021 – Present)
•Consulting on architectural decisions and best practices.
•Optimizing project structure and improving performance,
•code review.
Technical Adviser | A-bots (01.2022 – Present)
•Providing technical guidance for web solutions.
Frontend Developer | UPPEOPLE (07.2024 – 12.2024)
•Developed interactive UI components and improved UX.
Backend Developer | Cryptobank (02.2024 – 07.2024)
•Developed a payment module and balance management system.
Frontend Developer | SDH IT GmbH (12.2022 – 02.2024)
•Built and optimized web applications with React for medicine,
•Built and optimized modules for a monitoring systems aggregator for smart homes and industrial facilities (Vue)
Team Lead (Frontend) | Accord Group (12.2021 – 12.2022)
•Managed a frontend team, led architecture design, and ensured high code quality.
Co-founder | Plum-X Tenders & ZoomBy Games Studio (01.2019 – 2021)
•Led development of products in both gaming and blockchain industries.
Team Lead (Frontend) | Ukrtech.info (08.2017 – 01.2019)
•Supervised frontend development, optimized performance, and introduced new UI approaches.
Frontend Developer | MORRIS PROCESSING LTD (07.2015 – 08.2017)
•Built and optimized front-end interfaces for web applications supporting forex trading ecosystems.
Full Stack Developer | Legal (07.2014 – 08.2015)
•Built full-stack web applications with PHP, JavaScript, CSS, HTML and MySQL.
IT Specialist (Freelance) (11.2009 – 07.2014)
•Developed and maintained web applications for various clients.


Tech Stack
Frontend
•React.js (9 years), React Native (4 years), Expo, Next.js (5 years), Vue 3 (1.5 years), CRA (Create React App)
•TypeScript (7 years), JavaScript/ES6+ (10+ years)
•State management: Redux Toolkit (RTK), Recoil, TanStack React Query
•Data Management: React Router, Axios, React Hook Form, Yup
•UI Libraries: Tailwind, NativeWind, MUI, Bootstrap, CSS Modules, Styled Components
•Styling & Markup: SCSS, CSS (10+ years), HTML5 (10+ years)
•Performance & Optimization: Webpack, Vite, Code Splitting, Lazy Loading
Backend
•Node.js (4 years), Express, Next.js (5 years), Firebase, MySQL, MongoDB/Mongoose, Redis
•GraphQL (1.5 years), RESTful APIs, WebSocket, Socket.IO
•OAuth, JWT, Server-Sent Events, WebRTC
DevOps & Tools
•Docker, CI/CD (Jenkins, GitHub Actions), Git
•NPM, NPX, Yarn
•Sentry
•Testing: Jest, React Testing Library
•Infrastructure: Firebase
Design & UX
•Figma
•Adobe Photoshop
•Adobe Illustrator
•UX principles
•BEM methodology
AI & Machine Learning
•Tensorflow.js, Brain.js (0.5 years)
Desktop & Electron Apps
•Electron
English
•Upper intermediate

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