Andrii Lavreniuk

Senior Software Engineer

Contact: GitHub | LinkedIn

Professional Summary

Senior Software Engineer with 9 years of experience designing and developing scalable, high-performance web applications across healthcare, e-commerce, and entertainment domains.

Key Achievement: Drove AI-Powered SDLC Transformation by integrating ChatGPT, Claude Code, Cursor, and CodeRabbit across the development lifecycle, lifting developer throughput and cutting cycle time by 15% while training 30+ engineers in AI-augmented workflows.

Experienced in building systems from scratch, optimizing frontend architecture, and leading cross-functional teams. Successfully delivered a comprehensive SAQL Builder and Server-Side Pagination reducing page load time by 50% for enterprise customers.

Technical Skills

Languages & Technologies

JavaScript, TypeScript, Python, SQL, NoSQL, SAQL, HTML, CSS

Frameworks & Libraries

React, Vue, Vuetify, LWC (Lightning Web Components), Web Components, Express, Node.js, Jest, Bootstrap, Laravel, Drupal

Tools & Platforms

Docker, Salesforce CRM Analytics, Git, CI/CD, ActiveCampaign, SendGrid, WordPress, MJML

Programming Practices

OOP, Functional Programming, Performance Optimization, Responsive Design, Code Reviews, Unit Testing, CI/CD, Linting, Pair Programming (with AI), Caching, API Optimization, Technical Documentation

Professional Experience

Exadel | Senior Software Engineer

December 2020 – Present

CRM and Analytics Project

  • Spearheaded adoption of ChatGPT, Claude Code, Cursor, GitHub Copilot, and CodeRabbit across requirements analysis, coding, testing, and code reviews, materially reducing defect rates
  • Conducted internal training and workshops for engineering teams, upskilling 30+ developers in AI tool usage and driving consistent, high-quality code generation
  • Architected and developed core frontend components for complex, high-performance applications handling large datasets with optimized rendering strategies
  • Led team of 6 software engineers, mentoring junior and mid-level developers to enhance technical proficiency and accelerate team productivity
  • Established and enforced code quality, styling standards, and robust unit testing practices through automated linting, comprehensive code reviews, and CI pipelines
  • Collaborated closely with stakeholders and product management, proactively analyzing requirements and contributing to RFCs and technical design documentation
  • Promoted positive team culture with open communication and continuous learning, reducing team turnover
  • Delivered critical features including comprehensive SAQL Builder and Server-Side Pagination reducing page load time by 50% for enterprise customers

Environment: JavaScript, LWC, Web Components, React, Salesforce, CRM Analytics, SAQL, Git, CI/CD

E-commerce Project

  • Developed and enhanced large-scale platform monitoring product pricing data for major European retail clients
  • Engineered performant frontend solutions using Vue, integrating with Express and Python-based analytics APIs
  • Conducted extensive performance optimization through profiling, debugging, and fine-tuning to manage system load
  • Participated in rotating on-call support, diagnosing customer issues and educating on best practices, significantly reducing repeated support requests

Environment: Vue, Vuetify, Express, Node.js, Jest, Python, Pandas, Docker

Entertainment Project

  • Joined as reinforcement to accelerate timely delivery of critical investor demo product
  • Leveraged advanced caching techniques and optimized API request patterns across numerous external REST APIs, significantly reducing latency and preventing rate limit issues
  • Provided expertise in code optimization to ensure all investor demo requirements were satisfied within tight deadlines

Environment: Vue, Vuetify, Node.js, Express, Jest

ZEALIC HEALTH | Software Engineer

January 2019 – November 2020

Healthcare and Education Project

  • Developed and deployed responsive web solutions across multiple projects
  • Delivered websites and CRM systems supporting patients’ journey using React, Vue, Drupal, and Laravel, along with responsive HTML emails through ActiveCampaign and SendGrid, significantly improving user conversion rates
  • Built administrator console for gamified learning platform ZED using React and TypeScript, enabling efficient graphic and content management for Unity game client

Environment: React, TypeScript, MobX, Vue, Bootstrap, Jest, Drupal, PHP, HTML, CSS, MJML

AUTOMOTO.UA | Junior Software Engineer

November 2016 – December 2018

Automotive and E-commerce Project

  • Developed responsive websites and e-commerce solutions using JavaScript, HTML/CSS, PHP, and WordPress
  • Focused on website performance optimization, achieving consistent Google PageSpeed scores of 90+
  • Implemented SEO optimizations and integrated Google Analytics and Tag Manager, increasing organic traffic and conversions

Environment: JavaScript, Bootstrap, PHP, WordPress, HTML, CSS

Education

Vinnytsia National Technical University, Ukraine Master’s Degree, Computer Science | 2018