Volodymyr

Volodymyr Topchii
11.08.1997
Odessa, Ukraine
Linkedin: vtop1
Node.js engineer
Github: TNA-190

EXPERIENCE SKILLS
​O OP
Danavero, Canada / Ukraine — Node.js software engineer
​Node.js (Express, NestJS)
(remote)
OCT 2024 - FEB 2026 ​TypeScript/ES6+
●​ worked on high-load backend systems with real-time device ​REST/WebSockets/GraphQL
communication
​SQL (Postgres, MSSQL, MySQL)
●​ developed scalable REST APIs and backend services
●​ built event-driven backend flows (live updates, device state sync) ​NoSQL (MongoDB, DynamoDB)
●​ developed and optimized data pipelines, background jobs, ETL
​ClickHouse, Redis
processes
●​ integrated AWS (media processing) and Cloudflare R2 services into ​Unit testing (Jest, Jasmine)
backend workflows Amazon Web Services
●​ contributed to performance optimization and production reliability
​MacOS / Linux / MS Windows
●​ added and maintained unit tests to improve system reliability

DashDevs, USA / Ukraine — Node.js software engineer (remote)
SKILLS USED PREVIOUSLY
MAR 2021 - DEC 2023
​AngularJS, jQuery
●​ development of the web-applications and services according to
client requirements and specs C++ (cocos2d-x game engine)
●​ unit testing ​ASP.NET MVC / Umbraco CMS
●​ writing documentation and presentations for the internal corporate
department
●​ ETL tasks
CERTIFICATES
AWS Certified Developer
Proficonf, Odessa, Ukraine — Full-stack JS developer (office)
AWS Certified Cloud
MAY 2020 - FEB 2021
Practitioner
●​ development and support of microservices application according to
requirements ​
●​ development of features within social part of web-application
●​ unit testing and bug fixing
●​ ETL tasks, MinIO integration

SoftInsider, USA / Ukraine— Software Engineer (remote)
JAN 2019 - FEB 2020

●​ web-applications development according to client requirements
and specs
EDUCATION

Odessa National Academy of Food Technologies, Ukraine
SEP 2016 - JAN 2021

Automation and Computer-Integrated Technologies, Master degree

PROJECTS

Digital Signage CMS — Danavero

High-load real-time system for managing thousands of connected devices.
Developed backend services for real-time WebSocket communication.
Implemented Redis-based event flows for device state synchronization. Worked
with high-volume reporting data in ClickHouse. Optimized reporting pipeline
with streaming CSV export. Developed background jobs and async processing
mechanisms. Integrated AWS S3 / R2 and media processing flows.

Technologies used: Node.js, Express, TypeScript/JavaScript, PostgreSQL,
MySQL, ClickHouse, Redis, WebSockets, AWS S3/Lambda/MediaConvert,
sequelize, knex.js

Role: Backend software engineer

Team: 2PM, 2BE, 1SA, 2FE, 1QA, 1BA

Social media platform — Danavero

Social media platform with real-time features, media handling, and
user-generated content. Developed REST APIs and fixed production issues.​
Integrated CCBill payment system.

Technologies used: Node.js, Express, MongoDB (Mongoose), JWT,
WebSockets, AWS S3, cron jobs, CCBill payment system

Role: Backend software engineer

Team: 1PM, 1BE, 2FE, 1QA

Data aggregation platform — DashDevs
Platform for data aggregation from the public source. Designed for agencies
and provides up-to-date data sets in various fields.

Technologies used: Node.js, NestJS, TypeScript, MongoDB, AWS (Lambda,
SQS, Cognito)

Role: Backend software engineer

Team: 1PM, 1BA, 2BE, 2FE, 1QA
Real estate platform — DashDevs
Clients purchase houses for investors in large quantities through a
multi-step process involving multiple web-applications and roles. We built
integrations to unify the workflow and streamline operations for business
users. Technologies used: Node.js, NestJS, TypeScript, Postgres, AWS
(DynamoDB, Lambda, API Gateway), Jest

Role: Backend software engineer

Team: 1PM, 8BE, 3QA

Urban issues reporting platform — DashDevs
A platform for monitoring the situation in the city with the ability for the
user to create notifications on the map for other users and dispatchers who
can manage notifications for further transmission to the relevant
government service.

Technologies used: Node.js, Express, TypeScript, MongoDB, Jest, AWS
(Lambda, Cognito, Amplify)

Role: Backend software engineer

Team: 1PM, 1BE, 1FE, 1QA

Musicians social media platform — DashDevs
SPA solution for musicians and music teachers. Application helps musicians
to find a music teacher, create reusable lessons and track learning progress.

Technologies used: Node.js, Express, TypeScript, AWS (DynamoDB, S3),
Stripe payment system

Role: Backend software engineer

Team: 1PM, 1BE, 1FE

Video conferencing platform — Proficonf
Service for video conferencing in the browser.

Technologies used: Node.js, Express, JavaScript, AngularJS, Postgres,
Docker, Jasmine, AWS S3, MinIO, Web API

Role: Full-stack software engineer

Team: 8 engineers

Medical web application — SoftInsider
Medical web application based on working with Rx (medical prescriptions /
HIPAA compliance). It was developed from scratch as a roles / permissions
based system (patient / staff / admin).

Technologies used: Node.js, Express, JavaScript/ES6, jQuery, mongodb,
Stripe

Role: Full-stack software engineer

Team: 1FS, 1BE, 1FE, 1QA
Water polo school web application — SoftInsider
Web application was developed with the following customer requirements:

-​ auth module
-​ ability to modify site content such as media, tournaments, players,
schedules via CMS
-​ uploading game statistics from csv file
-​ extension of existing CMS for custom types such as tournaments,
schedules, players, statistics and its CRUD

Technologies used: C#, ASP.NET MVC, PetaPoco ORM / Entity Framework,
Umbraco 7 CMS, AngularJS, MS SQL Server, HTML/CSS

Role: Full-stack software engineer

Team: 1FS, 1QA

GuessWho 8-bit 2D game — Pet-project
Guessing game where you can play both together or against the computer. It
starts with each player having to choose a character from the board. Players
ask each other questions to remove unsuitable characters. The main goal is
to be the first to guess the opponent's character.

Technologies used: C++, cocos2d-x lib, Android / MS Windows, app
deploying to Google Play Store

Github link: github.com/vtopgh/guesswho