Олександр

OLEKSANDR LOPATIUK
Senior Angular Front-End Developer
[відкрити контакти](див. вище в блоці «контактна інформація») • Telegram

PROFILE

Senior Angular Front-End Developer with 6+ years of experience building complex SPAs and dashboards with Angular,
Angular Material, NgRx and RxJS. Led frontend architecture for enterprise applications used by 1,500+ users and
mentored junior developer. Strong background in designing scalable UI components, optimizing performance, and
collaborating with backend teams (Node.js/Express, PostgreSQL, Firebase) to deliver reliable, data-intensive
products.

EDUCATION

2016 – 2021 Master’s Degree in Computer Science (Software Engineering), Simon Kuznets Kharkiv
National University of Economics
• Specialization: Software Engineering
• Key topics across the program: algorithms, data structures, databases, software design,
and web development

AWARDS

Led enterprise level angular project with 1500+ real users, made architecture decisions,
debugged, tested, improved algorithms

Built a multilevel interaction graph that outperformed competitors and led to a contract
that brought in 1,000 new users

Mentored junior developers and participated in technical decision-making

SKILLS

Frontend Angular (Expert) • React/Redux (Proficient) • Angular Material (Expert) • TypeScript
(Expert) • NgRx (Expert) • RxJS (Expert) • Bootstrap 5 (Experienced) • HTML5/CSS3
(Expert)

Backend Node.js/Express (Experienced) • PostgreSQL (Experienced) • MySQL (Experienced) •
Firebase (Experienced)

Testing Jasmine (Proficient) • Cypress (Proficient)

Other OpenAI (Experienced) • Midjourney AI (Experienced) • Apex Charts (Experienced)

LANGUAGES

English Intermediate Ukrainian Native speaker

WORK EXPERIENCE

Apr 2023 – Present Angular CRM “LinkX”, Senior Angular Developer, Codja
• Description: Enterprise system for monitoring and managing integrations between
multiple systems.
• Technology stack: Angular, Angular Material, RxJS, Apex charts.
• Responsibilities: Led frontend architecture and development, designed and implemented
complex data-management workflows, made architectural and technical decisions,
mentored a junior developer.

Jan 2024 – Apr 2024 Angular App “Safesure”, Senior Angular Developer, Codja
• Description: app for insurance companies that provides customer with monthly prices
for specified period where he can choose the best offer depending on what he needs.
• Technology stack: Angular, Angular Material, RxJS, Firebase.
• Responsibilities: develop new functionality, integrate payments system, make
architectural decisions.

Jun 2024 – Dec 2024 Angular App “Showcase”, Senior Angular Developer, Codja
• Description: app for movie industry where creators can present their movies and find
actors and other professionals.
• Technology stack: Angular, Angular Material, RxJS, Firebase, OpenAI.
• Responsibilities: develop new functionality, integrate AI.

Feb 2023 – Mar 2023 Instagram Bot, Angular Developer, Freelance
• Description: A bot for generating instagram posts including caption and image using
OpenAI.
• Technology stack: Angular, Node.js, Express, OpenAI.
• Responsibilities: project design, planning and development.

Jan 2023 – Mar 2023 Angular NgRx/RxJS App “Crypto Planet”, Angular Developer, Freelance
• Description: Cryptocurrency exchange - a web service that provides customers with
services for the exchange of digital currencies for other assets, including national
currencies and other digital currencies.
• Technology stack: Angular, Angular Material, NgRx, RxJS, Jasmine, Cypress.
• Responsibilities: write a web for interaction with cryptocurrencies, write unit and e2e
tests.

Jan 2023 Angular NgRx/RxJS App “Form Builder”, Angular Developer, Freelance
• Description: application for building custom form. User can drag and drop available
items, change styles of the form and form items.
• Technology stack: Angular 15, Angular Material, NgRx, RxJS, HTML5/CSS3.
• Responsibilities: make architectural decisions, create features and optimize the code.

Jun 2022 – Sep 2022 Angular App “Online Shop”, Angular Developer, Freelance
• Description: application for online purchasing. User can choose gender on the first page.
On the main page, the user selects the type of clothing and is redirected to the clothing
page.
• Technology stack: Angular, Angular Material, HTML5/CSS3.
• Responsibilities: make architectural and structural decisions, used the best practices and
make code optimization.

Sep 2020 – Mar 2022 Web Pages, Junior Angular Deeveloper, Blue Media LTD
• Description: web pages for lead generation. The purpose was to fill in the form. After
submitting the form, the user is redirecting to the broker page.
• Technology stack: Angular, HTML5/CSS3, Bootstrap 5, JS, JQuery.
• Responsibilities: write a pixel-perfect pages via the Figma template. I also made a
decisions about the animations.