Vsevolod

Node.js Developer
Vsevolod Serhiienko

Summary
2 years of commercial experience in IT
Developing web applications using JavaScript (Node.js, React.js).
Experience in back-end developing with Node.js using Express.js and Nest.js
frameworks
Basic experience in front-end developing with React.js
Experience in SQL (MySQL, PostgreSQL, MSSQL) and NoSQL (MongoDB)
databases
Good logical thinking, team player, high level of responsibility

Skills / Competencies

Programming Languages JavaScript, TypeScript

Node.js, Express.js, Nest.js, React.js, Jest,
Technologies/Frameworks/Libraries TypeORM, Prisma, Postmark, Sendgrid,
Mongoose, HTML5, Redux, Sequelize

Databases MongoDB, DynamoDB, PostgreSQL, MySQL,
MSSQL

DevOps Tools Docker

Operational Systems Windows, Linux

Development Methodologies SCRUM, Kanban

English language Spoken level: Intermediate
Written level: Upper-Intermediate

Education Kharkiv National University of Radio Electronics,
Bachelor`s degree in Cybersecurity

Experience

CHI Software March 2024 – June 2026

Projects

1. Lincoln Reference Laboratory

Project duration August 2024 – June 2026

Technologies Node.js, Nest.js, TypeScript, MSSQL, MYSQL, TypeORM,
Nodemailer

About the project “One of the largest independent, general diagnostic laboratories,
located in Linden NJ. At our center, we ensure diversified testing that
addresses all our patient’s needs, while upholding their convenience
and preferences.”

Role Back-end development

Responsibilities Creating RESTful API
Developing the structure of database
Advanced file parsing, creation, storing (.xlsx, .csv, .pdf)
Cron scheduling
Developing complex ticket system
Automation of sending messages with nodemailer

2. CHI Surveys

Project duration July 2024 – October 2025

Technologies JavaScript, TypeScript, Express.js, Mongoose, HTML, SCSS, React.js,
Redux, i18next, Postmark, Docker

About the project Web application for creation, passing and reviewing surveys

Role Full-stack development

Responsibilities Creating RESTful API
Implementation authorization flow
Deployment
Creating front-end
Ukrainian & english localizations
Sending messages flow with Postmark