Богдан

Bohdan Pelenskyi

Full-Stack JS Developer

Lviv, Ukraine

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GitHub: https://github.com/BohdanPelenskyi
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Junior Full-Stack JavaScript Developer with hands-on experience building and
deploying CRM systems and business websites. Skilled in React, TypeScript,
NestJS, PostgreSQL, Prisma, REST APIs, and production deployment on Ubuntu
VPS with Nginx, PM2 and SSL. Experienced in developing responsive interfaces,
authentication flows, file upload systems, and database-driven business applications.

Technical Skills

Frontend: React, TypeScript, Vite, Tailwind CSS, React Router

Backend: NestJS, Node.js, Express, REST API, JWT, DTO Validation

Database: PostgreSQL, Prisma ORM, MongoDB basics

DevOps: Ubuntu VPS, Nginx, PM2, GitHub, DNS, SSL / Certbot

Testing: Jest basics, React Testing Library basics

Additional: React Native basics, GraphQL basics

Soft Skills:

● Team collaboration
● Self-motivated and eager to learn
● Problem-solving
● Adaptability

Education

2024 – Present
Lviv Polytechnic National University
Bachelor’s Degree in Electronic Communications and Radio Engineering

Relevant coursework:

● Data Structures & Algorithms
● Computer Networks
● Web Technologies
● Programming Fundamentals

Work Experience
Freelance Full-Stack Developer | Self-Employed | 2023 – Present

Specialized in end-to-end web development, working closely with clients to deliver
tailored software solutions, CRM platforms, and corporate websites.

Leo Energy (CRM System)

Tech Stack: React, TypeScript, Vite, Tailwind CSS, NestJS, PostgreSQL,
Prisma, JWT, Nginx, PM2, Ubuntu VPS, Let’s Encrypt

● Developed and deployed a production CRM system for a solar energy
company to manage projects, finances, equipment, client contacts,
tasks, commercial proposals, and documents.
● Implemented a secure REST API with JWT authentication, DTO
validation, and protected routes.
● Implemented file management features, including PDF handling,
document uploads, transaction attachments, drag-and-drop uploads,
and persistent file storage.
● Managed full production deployment on an Ubuntu VPS utilizing Nginx,
PM2, and Let’s Encrypt SSL for secure, scalable performance.

LeoInvest (Corporate Websites)

Tech Stack: HTML5, CSS3, JavaScript, Nginx, Ubuntu VPS, Let's Encrypt

● Developed and successfully launched two responsive corporate
websites from scratch tailored for an investment business.
● Implemented a mobile-first approach, ensuring fast loading times and
fully responsive design across all devices.
● Handled the complete deployment lifecycle, including server
configuration, domain mapping, and SSL provisioning.

MrShaker.pro & FotoCab.ua (E-commerce & Booking)

Tech Stack: React, Node.js, Express, PostgreSQL

● Developed full-stack web platforms for e-commerce (protein shakes)
and photo booth booking services using the PERN stack.
● Implemented custom admin panels, secure payment processing
integrations, and automated booking systems with event date
selection.
● Designed responsive UIs optimized for both mobile and desktop
devices, and built RESTful APIs for seamless frontend-backend
communication.

Key Open-Source Contributions

Space2Study | Educational Platform

Tech stack: React, Node.js, Express, PostgreSQL, TypeScript, Jest

● Built the user registration logic entirely from scratch and successfully
integrated it with the existing JWT-based authorization system.
● Implemented and connected backend email confirmation services for
new users and developed mentor registration pop-ups.
● Integrated Jest for comprehensive testing and SonarCloud for
automated code quality analysis.
● Collaborated in an Agile team environment via GitHub, actively
participating in backend stability improvements and PR reviews.

Certifications & Qualifications

● English: Intermediate (B1+) – written and spoken communication in a team setting

Certifications

SoftServe Academy:

● Frontend Fundamentals
● JavaScript / TypeScript Fundamentals
● Database Fundamentals
● DevOps for Developers
● Advanced Frontend with React.js
● Mobile Development with React Native
● Advanced Backend with Node.js
● Fullstack JS Project-Based Learning