Summary

Expertise

Project Highlights

Education

Agency

DK

English:

Upper Intermediate

Denys K.

vetted by Youteam

Vetted by YouTeam

Ukraine

UTC +02:00

Ukraine/Kyiv

English:

Upper Intermediate

Experienced Senior NodeJS Developer with a strong background in JavaScript and related technologies

Experienced FullStack Developer with a strong background in JavaScript and related technologies development. Skilled in building scalable applications using Node.js, Express.js, MongoDB, and React.js. Expertise in RESTful APIs, microservices, and real-time features. Problem-solver with a focus on performance optimization. Collaborative team player with excellent communication skills. Committed to staying up to date with the latest technologies. Passionate about delivering high-quality software solutions that drive business growth.

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Expertise

Years of commercial development experience

6 years of experience

Core technologies

TypeScript 4 years
Node.js 4 years
GraphQL 2 years
DynamoDB 2 years
React.js 4 years

Other technologies

AWS

Project Highlights

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Back-end Developer

CRYPTO GAMING PLATFORM

nda

It's pioneering platform and ecosystem into highly effective partnerships for games publishing and distribution, with a sharp focus on the future of decentralised crypto gaming and media consumption. This platform provide to users such feature like: - Wallet and payment: Users can add to wallet through top up or winnings to spend on the platform. Users able to add monetary prize-pools for tournaments. All prizes held in advance and disbursed securely either manually or automatically after event. Also users can use game store options from 3rd party iframe integration to full platform shop

Responsibilities & achievements

Designing structure of services Designing implementation flow Designing database schemas Working with a remote team AWS Development Code reviewing

AngularJS
Express.js
MongoDB
Node.js
Serverless
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FullStack Developer

CONNECTIVITY APPLICATION

nda

The main idea is to provide the ability for clients to integrate with our API and integrate with theirs. More than 7 micro-services, each dedicated to do its job. One service - External API was used to expose to the outside world our API that uses all the latest standards. The service had its ACL that gave us the ability to provide flexible access to any specific resources for any client on our side. Feed Manager was loading data from our database based on different criteria, converting data into a client's specific format and pushing either to our S3 bucket or to client's FTP. Another service - Supply Manager was used to integrate with clients' API and import their data into our database (ETL).

Responsibilities & achievements

Designing services architecture Designing code structure Working with a remote team Making changes to Docker configuration files Requirements refinement Implementing UI using React

AWS
Node.js
React.js
DynamoDB
FeathersJS
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Full Stack Developer

FINANCIAL PLANNING TOOLS

nda

British fintech project aimed at keeping records of money, increasing income, calculating risks with deposits, calculating income, and the ability to calculate a pension based on savings. The project is based on microservices and microfront-end. For calculations, Python is used, along with Node.js, and React on the front-end. Our team is mainly working on the back-end part, the development of the platform's functionality. Namely: development of the functionality of the module, which allows users to work with financial plans, predict and model financial goals. Work with infrastructure services, storage service, token service; as well as work with features risk integration, goal integration; preparation and execution of stress tests.

Responsibilities & achievements

• Writing migrations • Requirements refinement • Working with a remote team • Code optimization and refactoring • Implementing Pixel-Perfect UI using React • Close communication with Product team

MongoDB
React.js
TypeScript
GraphQL
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Full Stack Developer

PLATFORM FOR COMMERCIAL REAL ESTATE MANAGEMENT

nda

Platform used for data analysis of CRE portfolio, and consists of a fleet of micro-services on BE and monorepo on FE. The platform consists of several dashboards and admin tools for them. Dashboards such as Operating Statements, KPI, Visualization, Debt Management. Data were retrieved from reports of CRE managers and have been parsed through many steps such as Report Ingestion, Translation, Standardization, Data Validation and then loaded to ETL. Many of these steps are separate micro-services which we were implementing and supporting. Also, we had developed several services powered data throughout the platform - client/user management, KPI support, loans, and properties support, etc. During the development also was implemented oAuth integration with external service.

Responsibilities & achievements

Writing migrations • Code optimization and refactoring • Writing tests • Requirements refinement • Working with a remote team

AWS
PostgreSQL
Python
React.js
TypeScript
DynamoDB

Education

Higher education in Computer Science

Agency

Web & mobile development agency #21

100-400

GMT+2

Kharkiv/Ukraine

Core Expertise

Ajax
Alfresco
Amazon API
Amazon EC2
AngularJS
ASP.NET
AWS
CSS
Hibernate
HTML5
Hybris
Java
JavaScript
Liferay
Linux
MongoDB
.NET
Node.js
PHP
PostgreSQL
Python
React.js
React Native
Scala
Selenium
Shopify
Spring
SQL
Vaadin
Web Development
Windows
WordPress
Android
Automated Testing
Bootstrap
Cucumber
Demandware
DevOps
Git
Icefaces
IntelliJ IDEA
iOS
JSON
Laravel Framework
Mobile
Software QA Testing
Adobe Illustrator
Adobe Photoshop
Project management
Redux
Vue.js
Maven
GitLab
Firebase

Industries

E-Commerce & Retail, Information services & Technologies, Advertising & Marketing, Service & Support

Want to hire this engineer?

Check if Denys is available