Олексій

I'm a JavaScript / TypeScript developer who is passionate
about creating various applications and continuously learning
new technologies to stay current in a rapidly evolving industry.

Oleksii
With 5 years of experience in Angular and more than 2 years
in NestJS, I bring strong expertise in both frontend and
backend development. I am attentive, dedicated, and strongly

Yesenin focused on achieving results.
I enjoy diving deep into projects, analyzing and structuring
information to perform high-quality testing that reduces bugs
and issues before production. I work well in a team
environment but can also operate independently when needed.

Kremenchuk 39600, Ukraine WORK EXPERIENCE
[open contact info](look above in the "contact info" section)
Dec 2019 – Feb 2025

e-mail: [open contact info](look above in the "contact info" section)
BEETROOT
telegram: @Oleksii_Yesenin

Role: Full stack Engineer

Project Description: A web portal developed for the
European Commission, enabling document automation
and streamlining administrative workflows.
SKILLS & TECHNOLOGIES
Responsibilities:
● Constructing Angular views following design
guidelines and specifications;
Frontend: Angular 2+(last v19),
HTML/CSS, TypeScript, ● Applying best practices to optimize performance and
JavaScript; maintain application scalability;
Test: Karma/Jasmine; ● Writing unit tests (Jasmine/Karma) to ensure
Backend: NodeJS(NestJS), component reliability;
TypeORM, KnexJS, PostgreSQL; ● Integrating WebSocket connections to enable instant
Libs: RxJS, NgRx, Moment.js, messaging and notifications;
PrimeNG, Angular Material,
Bootstrap, Tailwind CSS, iEU,
Technologies: HTML/CSS3, RxJS, NgRx,, Angular 2+,
Swagger, NX-monorepo, etc;
Graphic Tools: Figma, Adobe NestJS, TypeScript, PostgreSQL, Knex.js, REST API.
Photoshop; ---
Version Control system: GitLab, Role: Angular Engineer
GitHub, Sourcetree;
Project Management Tools: Project Description: A multilingual UI developed for a
Confluence, Jira. European healthcare project, providing doctors with
streamlined access to internal patient information and
supporting cancer diagnosis through an AI-powered
engine.

COMMUNICATION SKILLS Responsibilities:
● Constructing Angular views following design
Ukrainian – Native guidelines and specifications;
Russian - Native ● Optimizing application performance to deliver scalable
English – Upper- and reliable solutions;
Intermediate (B2) ● Collaborating with UX/UI designers to deliver pixel-
perfect Angular views;
● Collaborating with backend teams to design and
consume APIs effectively;
 WORK EXPERIENCE

● Debugging and resolving performance bottlenecks

Oleksii in the front-end;

Yesenin
Technologies: HTML/CSS3, RxJS, NgRx, Angular 2+,
Angular Material, iUE, TypeScript, REST API;
---
Role: Angular Engineer

Project Description: A multilingual web platform
designed to help companies find, engage, contract,
manage, and pay a wide network of subcontractors.

Responsibilities:
Kremenchuk 39600, Ukraine ● Constructing Angular views following design
[open contact info](look above in the "contact info" section) guidelines and specifications;
● Implementing performance best practices to ensure
e-mail: [open contact info](look above in the "contact info" section) high-quality, scalable applications;
● Developing real-time communication features in
telegram: @Oleksii_Yesenin
Angular applications using WebRTC;
● Ensuring cross-browser compatibility and
responsive design for all devices;
● Participating in code reviews and maintaining
coding standards;

Technologies: HTML/CSS3, RxJS, NgRx, Bootstrap,
Angular 2+, WebRTC, Angular Material, TypeScript,
REST API;
---
Role: Full stack Engineer

Project Description: A platform designed to analyze
clients’ credit histories and assess their financial
reliability to support informed loan decisions.

Responsibilities:
● Developing Angular UI views based on design
specifications and integrating them with the required
business logic;
● Implementing business logic for backend;
● Implementing Zoho and Ontraport CRM to project
for backend;
● Refactoring code;
● Improving performance and efficiency across the
application(frontend and backend);

Technologies: HTML/CSS3, RxJS, NgRx, Promises,
Angular 2+, TypeScript, NestJS, TypeORM, Swagger,
PostgreSQL, REST API;

Dec 2006 – Jul 2017

UKRTATNAFTA

Role: Electronics engineer in the telecommunications
department
 WORK EXPERIENCE

Oleksii
Responsibilities:
PBX Management
Electronic equipment repair

Yesenin Skills:
Electronic circuit diagnostics and repair
PCB soldering & rework (SMD, THT)
Power supplies, inverters, motor controllers
Microcontrollers (Arduino, ESP8266/ESP32)
Sensors, relays, MOSFETs, IGBTs
LCD / HMI displays and interfaces
Reading schematics & datasheets
Kremenchuk 39600, Ukraine Preventive and corrective maintenance
Firmware upload and debugging
[open contact info](look above in the "contact info" section)

e-mail: [open contact info](look above in the "contact info" section) EDUCATION
telegram: @Oleksii_Yesenin
Sep 2005 – Jul 2006

Kremenchuk National Polytechnic University,
Course: "Computer Systems", Specialist's degree;

Sep 2001 – Jun 2005

Kremenchuk National Polytechnic University,
Course: "Computer Systems", Bachelor's degree;