Andrii Khmelovsky's Resume

Expertise & Vision

I am an autonomous front-end focused engineer and technical leader who partners with mid-size businesses and early stage startups in fintech, blockchain, and iGaming to deliver measurable business outcomes. I take products from presale and architecture design to launch, ensuring robust, scalable solutions while leading teams and mentoring engineers. My contributions have helped launch products generating 0 to 300k in revenue and supported seed rounds from 500k to 5M, transforming complex backend integrations and business requirements into intuitive, high-performance digital experiences.

My approach is guided by tangible impact. I use technology as a tool to create meaningful value rather than for its own sake. I approach every project with a product mindset, focusing on solutions that genuinely serve users and advance business goals. I enjoy exploring new technologies, experiences, and methodologies that enable me to craft exceptional and elegant solutions. For me, engineering is about turning imagination into practical outcomes where thoughtful design, smart code, and strategic decisions converge to create products that perform and inspire.

Work Experience

Payabl.

Jan 2025 - Nov 2025

Senior Frontend Engineer

Developing web applications and microservices for business banking, focus on core functionality for payments, transaction validation, detailed financial reporting and administration.

  • Implemented new features and improved existing codebase across multiple banking services.
  • Built and optimized transaction workflows, payment validations, and reconciliation processes.
  • Designed and maintained reporting modules for financial data analysis and audit tracking.
  • Performed code reviews, shared technical solutions, and aligned engineering approaches across teams.
  • Took full ownership of features from technical design to production deployment.
  • Ensured high code quality through test coverage and hands-on deployment validation.
  • Contributed to architecture decisions, scalability enhancements, and release stability.
  • Next.js
  • TypeScript
  • Python
  • Postgres
  • Antd

Teaching Strategies

Oct 2023 - Oct 2024

Senior Frontend Engineer

Developing intuitive and impactful educational software for teachers.

  • Owned full feature lifecycle, from refinement and design to final delivery and deployment.
  • Implemented complex data-driven interfaces with filtering, reporting, and visualization logic.
  • Maintained high UI precision, often building from conceptual designs using MUI and custom components.
  • Ensured code reliability through solid test coverage and active involvement in deployment validation.
  • Conducted code reviews, improved architecture, and contributed to better performance and maintainability.
  • Collaborated with cross-functional teams to deliver scalable and maintainable solutions.
  • React.js
  • JavaScript
  • Node.js
  • MariaDB
  • MUI

Thirty Capital

Feb 2021 - Oct 2023

Frontend Tech Lead

Built a CRE asset management system for real estate portfolio managers to analyze and manage investments.

  • Led the frontend stream of 10 engineers, overseeing feature development and delivery.
  • Took full feature ownership, from technical design to production deployment.
  • Conducted code reviews, mentored team members, and participated in hiring interviews.
  • Designed application architecture and optimized system performance.
  • Implemented new features, filters, charts, and detailed reporting modules.
  • Managed releases, ensured test coverage, and maintained alignment with stakeholder requirements.
  • Next.js
  • TypeScript
  • MUI
  • Python
  • Postgres

Lucky Voice

Jul 2019 - Feb 2021

Frontend Engineer → Frontend Team Lead

Led frontend development for a karaoke bar network, building mobile apps, terminal applications, and web platforms to enhance customer experience and operational efficiency.

  • Led feature development and bug fixing across multiple platforms, ensuring seamless user experience
  • Planned product roadmaps, wrote technical specifications, and managed sprint task distribution
  • Conducted technical interviews and participated in hiring processes to build high-performing team
  • Mentored frontend developers and conducted code reviews to maintain high code quality standards
  • Implemented comprehensive test coverage and established quality assurance processes
  • Investigated and adopted new technologies to enhance cross-platform development workflows
  • React.js
  • JavaScript
  • React Native
  • Python
  • MySQL

Nurburgring GmbH & Co. KG

Oct 2017 - Jul 2019

Frontend Engineer

Built a comprehensive news and booking platform for motorsport track services (concerts, races, and test drives), with integrated e-commerce for merchandise sales.

  • Delivered new features and eliminated performance bottlenecks to improve application responsiveness
  • Implemented headless Magento integration for merchandise sales and payment processing
  • Managed comprehensive test coverage and maintained code quality standards
  • Engineered smart TV applications for advertising campaigns and live race streaming experiences
  • Deployed separate microfrontends on AWS infrastructure
  • React.js
  • JavaScript
  • Bootstrap
  • Ruby on Rails
  • Postgres

Education

Kyiv College of Information Systems and Technologies, KNEU

2013 - 2017
Junior speccialist in Software Engineering

Institute of Information Technologies in Economics, KNEU

2017 - 2020
Bachelor's Degree in Computer Science

Skills

Side projects

ISSF

End-to-end web platform for the International Shooting Sports Federation, integrating live broadcasts, performance analytics, and online store

  • TypeScript
  • Next.js
  • AWS
  • PostgreSQL
  • Tailwind CSS

Ello

AI-powered reading coach app with speech recognition technology for children K-3, featuring adaptive learning and interactive e-books

  • TypeScript
  • Three.js
  • Adaptive Learn
  • React
  • React Native
  • MUI
  • Firebase

Brawl3rs

Experimental Web3 + AI project combining meme culture, prediction markets, and interactive battles between user-generated agents

  • TypeScript
  • Next.js
  • Radix UI
  • Ethers.js
  • Blockchain