Kostiantyn

Postavnyi Kostiantyn [open contact info](look above in the "contact info" section)
[open contact info](look above in the "contact info" section)
Junior Backend Node.js github.com/PimakPk
LinkedIn: link

SUMMARY EXPIRIENCE

Backend developer with experience in 24/7 Auto Repair Service (2024)
Freelance Project (WordPress Developer)
Node.js, Express, and MongoDB. Developed Quickly learned WordPress and built a business website within
APIs for web applications, optimized a week.
Configured optimization plugins and implemented basic SEO.
database queries, and built authentication
Technologies: WordPress, HTML, CSS, SEO.
and authorization systems. Experienced in tsilodobovesto.com.ua
testing, deployment, and server
BackendPost (2024)
configuration. Quick learner and adaptable Backend Developer
to new technologies. Ready to work in a Built an Express.js API with MongoDB.
Implemented CRUD operations and request validation.
team and take responsibility for results.
Separated logic into modules for better scalability.
GitHub Repo

Blisspu Calculator (2023)
HARD SKILLS React Developer
Developed a mobile app using React.js to calculate ingredient
proportions for scented candle production.
Backend: Node.js, Express.js, REST API Added customizable parameters for users.
Databases: MySQL, MongoDB Available on TestFlight for testing.
Testing: Jest
Other: WordPress, SEO, JWT Monarch Entertainment (2022-2024)
Languages: Ukrainian (native), English (B1-B2) Co-founder, Backend Developer
Performed mobile application testing, identifying over 100
bugs.
Managed the Blisspu online store project and the company
SOFT SKILLS website.
Developed backend architecture for web applications.
Leadership skills and ability to manage a team https://monarch-entertainment.com.ua/
Quick adaptation to new environments and
technologies Brooks (2021)
Ability to learn quickly and implement new Backend Developer
approaches Developed an electronic table reservation system for a
Responsibility and adherence to deadlines restaurant using Node.js and MySQL.
Ability to find alternative solutions to problems Implemented table merging functionality and automated client
number storage.
Teamwork and effective communication
Optimized the database and created an API for seamless
Diplomacy in conflict resolution
integration.
Motivation to grow in backend development
Technologies: Node.js, Express, MySQL, HTML, CSS.

EDUCATION

SoftServe Practical JS (2025) Oles Honchar Dnipro National University (2024-2026)
Completed Node.js Backend Development course. Magister's Degree, 121 Software Engineering.
Covered Git/GitHub, JS for Node.js, OOP, HTTP module,
Asynchronous programming, REST API, Express.js, SQL & Kharkiv Polytechnic Institute (2020-2024)
NoSQL databases (MySQL, Sequelize, Mongoose), KOA.js, Bachelor's Degree, 121 Software Engineering.
Socket.io, RxJS, GraphQL, Unit Testing, JWT and Node.js Innovation Campus (2022-2023)
modules/packages. Studied C, JavaScript, HTML, CSS, Node.js.
GitHub Repo Worked in a self-learning format without instructors.