Юрій

Yurii Petrovskyi [відкрити контакти](див. вище в блоці «контактна інформація») | UK, Scotland
[відкрити контакти](див. вище в блоці «контактна інформація») | Portfolio website | LinkedIn | GitHub

Profile

Motivated and detail-oriented Full-Stack Developer with strong proficiency in JavaScript, TypeScript,
React, and Node.js. After 12+ years in the oil & gas sector, I fully retrained as a developer.

I currently contribute to two open-source volunteer projects and work in a startup environment
using JavaScript / TypeScript, React, Node.js, GitHub Actions and REST APIs. My recent focus
includes DevOps-adjacent practices (CI/CD, pipelines, testing) and full-stack application
development.
Key Skills

Technical
 Languages & Frameworks: JavaScript (ES6+), TypeScript, HTML5, CSS3, React, Redux,
Next.js, Node.js, SQL, PHP(basic), Laravel, Python(basic), jQuery, Bootstrap/Tailwind,
Prisma ORM.
 Testing: Cypress, React Testing Library, Jest.
 CI/CD & DevOps: GitHub Actions, Git, Linear, Docker.
 Cloud / Hosting: Supabase, Netlify, Render, Hostinger, AWS.
 Databases: PostgreSQL, MySQL.
 Other: REST APIs, JWT Authentication, Agile/Scrum, Figma, Linear.

Core Competencies
 Building scalable, modular full-stack applications.
 Writing automated tests and managing CI/CD pipelines.
 Designing and integrating relational databases.
 Collaborating within cross-functional Agile teams.
 Owning code from design to production.
 Following Git-based workflows (branches, PRs, reviews).
 Communicating complex ideas clearly and concisely.

Work Experience

ZipTangle Ltd (Tech Startup) - Full Stack Developer Jun 2025 – Present
(Volunteer, Remote, UK)
A fast-paced startup building Web2/Web3 hybrid solutions with a focus on humanitarian and DePIN
applications.

 Built reusable components and API logic using React, Node.js and REST.
 Contributed to Stripe integration and secure payment logic.
 Collaborated via Linear and daily Agile standups.
 Worked with GitHub Actions for CI/CD and version control.
 Gained exposure to cloud-based DevOps tools and environments.

HelpChain Project - Full Stack Developer (Volunteer, Remote, UK) May 2025 - Present
Ukrainian Employment Integration Portal – Supporting professional and cultural integration in the UK.

 Developed and maintained platform features with Next.js, React, Node.js, and MySQL.
 Used Prisma ORM for DB modeling and queries.
 Worked closely with designers and stakeholders to deliver accessible, inclusive UI.
 Collaborated via GitHub Projects, PRs, and code reviews.

Kindly Project - Full Stack Developer (Volunteer, Remote, UK) Apr 2024 - Present
Open-source project helping people give and receive unused items in their local communities.

 Created core features using React, Next.js, and TypeScript.
  Integrated Supabase (PostgreSQL-based BaaS) for authentication and storage.
 Implemented E2E testing via Cypress.
 Set up GitHub Actions for CI/CD.
 Collaborated with an Agile team using PRs, issues, and Figma.

Ukrnafta, Ukraine Jan 2018 – Oct 2022
Geologist Engineer

 Responsible for eight oil fields, comprising more than 400 oil wells.
 Created production plans and enhanced operational efficiency.
 Held daily technical meetings to address production issues.
 Conducted daily analysis of well performance to identify optimization opportunities.
 Created and implemented daily production reports, including well performance analysis.
 Collaborated across departments to resolve production challenges, develop strategic plans.

Ukrnafta, Ukraine Jul 2014 – Jan 2018
Utility Surveyor

 Performed surveys of land, buildings, power lines and pipelines.
 Conducted terrain and infrastructure surveys using a digital theodolite.
 Processed geodetic data in Digitals to create maps and relief simulations.
 Integrated satellite imagery, orthophotos, and scanned maps for enhanced accuracy.
 Performed geospatial data analysis and object searches by coordinates.

Ukrnafta, Ukraine Oct 2011 – Jul 2014
Oil Rig Operator

 Operated and maintained approximately 40 oil wells, ensuring efficiency and reliability.
 Prepared wells for research and technical operations.
 Documented production activities and analysed automated system performance.

Ukrnafta, Ukraine Sep 2010 – Oct 2011
Control and Automation Technician

 Maintained and calibrated automation systems, including oil heater control devices.
 Repaired and adjusted manometers and gas equipment.
 Installed and configured measurement and control electronics.

Education & Technical Training

2023 – 2024: IT Career Switch Ltd
Full Stack Developer Traineeship (intensive, practical one-year program)

 Completed two projects from scratch and to specification - providing hands-on development
experience with front and back end languages and databases.
 Developed a Gazetteer app with APIs for country data and interactive maps.
 Built a Company Directory app with CRUD operations and MySQL integration.
 Implemented REST APIs, AJAX, and secure server-side validation.
 Used technologies: HTML, CSS (Bootstrap), JavaScript, PHP, jQuery, MySQL, Leaflet.js.

2023 – 2024: British Council - English Language Course (B2 certificate).

2023: Standguide Group - Online ESOL and Employability Course.

2003 – 2008: BSc Geology / Specialist Diploma – Geophysics, Ivano-Frankivsk National
Technical University of Oil and Gas, Ukraine.
 Certifications

Codecademy (2023 – 2024): Full-Stack Engineer | Learn PHP Skill Path | Python 3 | Advanced
React Course | Redux Course | Learn Bootstrap Course | jQuery

Selected Projects (Personal / Training)

Gazetteer GitHub Live Demo
Interactive country information platform with real-time data and map visualisation.
 Developed using JavaScript, PHP, Bootstrap, jQuery.
 Integrated multiple APIs (GeoNames, OpenWeather, RestCountries).
 Built interactive map using Leaflet.js.
 Implemented dynamic AJAX loading and handled CORS.

Company Directory GitHub Live Demo
Multi-user employee management system with CRUD functionality.
 Developed using JavaScript, PHP, Bootstrap, jQuery.
 Used AJAX for real-time, asynchronous data operations.
 Developed secure MySQL backend with server-side validation.
 Created responsive UI with Bootstrap.
 REST API integration and conflict management logic.

E-commerce Platform GitHub Live Demo
Full-stack online store with user authentication and Stripe payment.
 Developed with React, Redux, Node.js, Express.js.
 Integrated Stripe API for secure payments.
 Built and consumed RESTful APIs, JWT-authenticated.
 Deployed to Render, managed secure environments.

myReddit GitHub Live Demo
Reddit-style responsive app with real-time post browsing.
 Integrated Reddit API, managed state with Redux Toolkit.
 Used createAsyncThunk and fetch for async operations.
 Wrote unit tests with Jest & React Testing Library.
 Mobile-first responsive design.

Achievements
Ukrnafta, Ukraine

 2020: Received a certificate of appreciation for long-term diligent service and substantial
accomplishments in professional activities.
 2016: Awarded a certificate of recognition by the Chairman of the Board of Ukrnafta for
significant achievements in work and professional excellence.

Languages

Ukrainian (Native) | English (Fluent) | Russian (Fluent)