Vladyslav Pauk

Key Accomplishments in Tech Leadership

• Backend Transition: Successfully transitioned the backend tech stack from Ruby to Node.js, enhancing system performance and scalability.
• TypeScript Adoption: Led the adoption of TypeScript, significantly improving code quality, maintainability, and developer experience, which reduced the occurrence of bugs compared to previous Ruby and JavaScript-based codebases.
• Infrastructure as Code (IaC) Optimization: Faciliated the transition from Terraform to Terragrunt, optimizing the use of Terragrunt modules and implementing an improved folder structure, resulting in more efficient IaC management.

Product Development

• Developed an MVP for a client tracking system for a not-for-profit mental health counseling and coaching organization.
• Engineered a real-time tele-health audio transcription and analysis product using Python and OpenAI Whisper technology.
• Created a React Native proof-of-concept (PoC) app and accompanying API for an Android-based glasses device aimed at warehouse inventory counting, which played a crucial role in securing investor interest.
• Built a front-end application using Mapbox and React to visualize Social Determinants of Health (SDOH) data across all U.S. states and tracts, alongside developing an API to serve millions of SDOH records.
• Extracted and normalized SDOH data using Jupyter and Pandas from sources including the US Census Bureau, Robert Wood Johnson Foundation, and U.S. Bureau of Labor Statistics.

API & Microservices Development

• Engineered and released a fleet management application to the App Store and Google Play, utilizing React Native and Mapbox GL for both iOS and Android platforms within a six-month timeframe.
• Developed an API for a Partnerships Tracking Platform for a major U.S. university using Ruby on Rails.
• Contributed to the development of a microservice-based application for fleet management application using NestJS.

• Database Optimization: Played a pivotal role in the normalization and optimization of a high-volume legacy Ruby on Rails database, containing over 30 million rows. Successfully reduced query times, cutting the longest query from over 5 minutes to just 30 seconds, significantly improving application performance and user experience.

• API Development: Architected and developed a robust, full-featured API for a startup's innovative restaurant and bar bill settlement platform. The API seamlessly integrated real-time location broadcasting, third-party point-of-sale systems, and Stripe payment processing. Delivered the project with 100% test coverage, ensuring high reliability and readiness for market testing.

• Retail Experience: Co-engineered an Apple TV in-store demo application for an interactive indoor bike trainer stand, utilizing Swift (SwiftUI and UIKit). Designed and implemented an accompanying administrative dashboard, enabling remote management and configuration of demo stands across multiple retail locations nationwide, enhancing the client's product showcase capabilities.

• Mentorship & Team Development: Acted as a mentor for junior developers, guiding them through complex project challenges and promoting best practices in coding and software design.

• Sales CRM Development: Led the development of a Minimum Viable Product (MVP) Sales CRM API, utilizing Ruby on Rails to ensure a robust and scalable solution. Co-developed a companion Single Page Application (SPA) and mobile app using React and React Native, enabling seamless cross-platform user experiences. The CRM system was instrumental in streamlining sales processes and improving client management for the end-users.

• Data Integration Engine: Engineered a sophisticated data integration engine to synchronize any Sales CRM with Mailchimp, leveraging Ruby on Rails. This solution automated marketing campaigns and improved customer outreach, leading to a 25% increase in email marketing efficiency for clients.

• Financial Interest Disclosure System Development: Spearheaded the development of a comprehensive financial interest disclosure system for a prominent U.S.-based non-profit healthcare system. Utilized React to build a responsive and user-friendly interface, enabling healthcare professionals to efficiently disclose financial interests in compliance with regulatory requirements.
• School Inventory Management System: Developed a web-based inventory management system for a local school district to streamline the tracking and management of school supplies. Utilized Django and PostgreSQL to create a secure and scalable system that allows school staff to easily manage inventory levels, track usage, and generate reports.
• Field Service Management Software: Developed a robust web application for Dispatch, enhancing their field service management platform. Integrated complex scheduling, real-time tracking, and communication tools, resulting in improved operational efficiency and customer satisfaction across their service provider network.

• Train Cargo Tracking API Development: Developed a robust API for a train cargo tracking application, catering to both consumer and employee needs. The API provided real-time tracking information, automated notifications, and streamlined the management of cargo data, significantly improving operational efficiency for the client.
• Legacy AngularJS SPA Revamp: Took over and modernized a legacy AngularJS Single Page Application (SPA) for a prominent fashion magazine. Implemented key updates and optimizations that enhanced the application's performance, responsiveness, and user experience, ensuring it remained competitive in a fast-paced industry.
• Performance Optimization: Conducted thorough performance testing and implemented optimizations that reduced load times and improved the overall user experience for both the train cargo tracking application and the legacy AngularJS SPA.
• Legacy Codebase Management: Demonstrated expertise in managing and refactoring legacy code, ensuring the long-term maintainability of the fashion magazine’s application while introducing new features and improvements.

• Developed API and companion Front End application that visualized relationships between ukrainian politicians, oligarchs and government officials using Symfony, Neo4j & Raphaël.js
• Developed numerous websites for a variety of clients, including restaurants, car dealerships, and car rental services.

• Developed custom landing pages for various clients using PHP, HTML, and CSS, enhancing the online presence of small to medium-sized businesses.
• Designed and implemented Content Management Systems (CMS) tailored to the needs of clients' blogs, newspapers, and other publishing platforms, facilitating easy content management and updates.
• Improved websites' search engine performance through SEO optimization, including keyword research, meta tag creation, and on-page optimization, leading to improved search rankings and increased organic traffic.
• Migrated several government websites from outdated custom content management systems to more modern and widely used platforms, improving functionality, user experience, and security.
• Managed servers, ensuring optimal performance and security, while also maintaining applications and databases.
• Technical support, including server configuration, database management, and application maintenance, to ensure the smooth operation of client websites.
• Collaborated closely with clients to understand their business goals and translated them into effective digital solutions that improved user engagement and conversion rates.