Full-stack Software Engineer

Volodymyr R

Information

Available hours \ week
40 h/w
Seniority level
Senior
Years of experience
8 yrs.
Location
Ukraine
Nationality
Ukraine
Timezone
(GMT+02:00) Kyiv

Languages

English
Upper-Intermediate (B2)

About

Volodymyr is a Full-stack Software Engineer with a focus on developing scalable web applications using core technologies like JavaScript, TypeScript, and Node.js. With 8 years of experience, he has honed his skills in frameworks including React.js, Next.js, and Express.js, enabling him to architect and optimize complex systems for various industries such as E-commerce, Healthcare, and AgriTech. He possesses strong expertise in both frontend and backend development, managing database structures with SQL technologies like PostgreSQL and Redis. Volodymyr has also integrated various tools for performance enhancements and deployment via AWS, Docker, and CI/CD methodologies. His practical experience encompasses building dynamic, data-driven applications as well as microservices architecture. Volodymyr's technical acumen is complemented by his ability to collaborate effectively with stakeholders, ensuring that comprehensive documentation supports development and testing processes. He holds no formal certificates or degrees in this field.

Experience

Voice assistant application

Full-stack Developer

About the Project

This is an application like Siri, which helps order dishes from different restaurants like Star b ucks, Dominos, etc in one place using voice. Frontend part b uilt on Next.js. Rest backend built on NestJS and a few AWS Lambda functions created using Serverless. The system is automatically deployed using AWS services CodeBuild, CodePipeline.

  • E-commerce

Responsibilities

- Development of project's architecture and data base structure; - Web site performance improvement and optimization; - Develop and maintain a scalable design system, including components, styles, and interaction patterns; - Building Prototypes and Proof of Concepts; - Comprehensive Documentation; - Implemented and supported testing/deployment workflows in a distributed system environment,

The Baby Project

Full-stack Developer

About the Project

A mobile application designed to help parents monitor and support their child’s growth and development. The platform enables tracking of sleep schedules, meals, medication, and vaccination history, while leveraging AI analytics to provide personalised insights. Parents can also capture and store memorable milestones, such as first words, photos, and visited countries, combining practical health management with a digital memory book.

  • Healthcare

Responsibilities

- Collab orated with stakeholders to gather requirements and define system workflows; - Developed React interfaces for tracking and data management; - Built and connected b ackend logic in Node.js; - Prepared documentation and supported testing and deployment.

Data-intensive SaaS platform

Full-stack Developer

About the Project

It is a SaaS project aimed at the internal administration of an existing business in several facilities. The platform makes it easy to enter and view general and medical data on animals, manage clinical and behaviour cases, track animal transfers, build family trees and animal connection graphs, and so on. It allows you to easily view lots of useful real-time and historical statistics. The platform allows to generate different types of reports (general, medical, financial) for the whole farm, a group of animals or a single animal. Also, it is possible to upload files from labs and process animals medical indicators.

  • AgriTech

Responsibilities

- Development of the project's architecture and data base structure; - Develop and maintain a scalable design system, including components, styles, and interaction patterns; - Website performance improvement and optimization; - Decision on the technical stack.

Web Automation AI Agent

Full-stack Developer

About the Project

Built a smart AI agent capable of performing autonomous web actions similar to a human user. The agent can open tabs, click buttons, fill out forms, extract or input data, and follow complex behavior sequences based on user-defined instructions. It mimics browser-based interactions to automate repetitive tasks, streamline workflows, and integrate seamlessly into larger AI systems.

  • E-commerce

Responsibilities

- Development of the project's architecture and database structure; - Website performance improvement and optimisation; - Designed and developed an autonomous AI agent leveraging GPT-4; - Ensured scalable and fault-tolerant deployment of AI components within AWS Lambda and Docker environments.

Contact center platform

Full-stack Developer

About the Project

It is a cutting-edge, cloud-native contact centre platform designed to revolutionise the way businesses interact with their customers. By prioritising simplicity, efficiency, and innovation, the platform streamlines every interaction across a variety of channels, including voice, digital, and self-service. Our solution empowers businesses to foster seamless communication and build meaningful relationships between customers and agents. The platform offers an intuitive interface that simplifies complex workflows, enhances agent productivity, and ensures customers receive personalised and timely support.

  • Consumer Services

Responsibilities

- Built and optimized b ackend services where correctness, latency, and data integrity matter (transferable to “live odds updates” pipelines); - Core Functionality Development; - Worked in event-driven architecture patterns (useful for order-flow / external-data-driven updates); - Security and Data Integrity.

DAO analytics platform

Full-stack Developer

About the Project

It is a data analytics platform that provides ranking and analysis of the top Decentralized Autonomous Organizations (DAOs) across multiple metrics.

  • Cryptocurrency

Responsibilities

- Development of project's architecture and database structure; - Website performance improvement and optimization; - Built analytics features and ranking/aggregation logic; - Improved performance and reliability in production; - Comprehensive Documentation;

AI-Native Low-Code Platform & CRM System

Full-Stack Developer

About the Project

Designed and developed a modular AI-native low-code platform that enables users to build fully customised applications and intelligent workflows without traditional programming skills. The system includes a powerful CRM built on top of this architecture, integrated with a web-based AI agent. It allows seamless communication between AI components, empowering non-technical users to design, deploy, and connect AI-driven applications in a unified ecosystem.

  • E-commerce

Responsibilities

- Architected and developed AI-driven platform backend and frontend components to enable low-code application building; - Implementation of real-time visual workflow builder with UI automation blocks; - Integration of AI-driven agents to manage tasks, notifications, and validations; - Building Prototypes and Proof of Concepts; - Comprehensive Documentation.

Food ordering platform

Full-Stack Developer

About the Project

The platform was developed to simplify food ordering by several options that are available for customers. - There’s no need to call the operator to make an order; - The customer can either pick up an order from the restaurant or apply for order delivery; - Every order is tracked, and the current progress of the courier is visible for the customer; - External APIs give users a chance to pick food from a wide variety of restaurants.

  • Food And Beverages

Responsibilities

- Development of project's architecture and database structure; - Development and maintenance of all functionality; - Ensuring code quality, readability, and maintainability.