Денис

Denys Milus
Senior Frontend Engineer
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t.me/Milusss | Kremenchuk, Ukraine

Summary

Geniusee: Custom Software Development Company
Kyiv, Ukraine

Tech stack:
Languages: JavaScript / TypeScript
Frontend development: React.js, Next.js (app / page routes)
AI Toolchain: Claude Code, AI-enhanced development environments
LLM Providers & Platforms: OpenAI, Anthropic (Claude models), Google (Gemini models)
AI Engineering Expertise: AI-driven MVP development, AI-augmented software development, AI workflow
automation

Key responsibilities:
• implemented a component-based approach and a UI Kit (Tailwind CSS / Storybook) based on Figma
designs, which accelerated the product team's feature launches by 25% and ensured 100% cross-browser
compatibility;
• designed the integration of a new REST API / GraphQL with a React application in close collaboration with
the backend team, which reduced the number of unnecessary network requests by 40% and accelerated data
loading on the client by 1.5 seconds;
• collaborated with UX/UI designers to ensure designs are feasible and aligned with technical specifications,
enhancing overall user satisfaction;
• participated in daily stand-ups and sprint planning sessions to align team objectives and address any
blockers promptly;
• ensured cross-browser compatibility and mobile responsiveness for all web applications, improving user
accessibility;
• maintained a clean and organized codebase, adhering to best practices and coding standards throughout the
development lifecycle;

Middle Frontend Engineer Mar 2023 – Feb 2025
Incode Group
Zaporizhzhya, Ukraine

Tech stack:
Languages: JavaScript / TypeScript
Frontend development: React.js, Next.js (app / page routes)
AI Toolchain: Cursor IDE, AI-enhanced development environments, AI workflow automation

Key responsibilities:
• engaged in continuous learning of emerging technologies to stay ahead in the fast-evolving software
development landscape;
• actively collaborated with product managers and analysts during sprint planning, promptly highlighting
technical blockers, which enabled the team to complete over 95% of the planned sprint scope on time;
• collaborated closely with product managers and analysts during the requirements gathering phase (Product
Discovery), translating business objectives into clear technical specifications. This reduced scope creep by
20% and ensured predictable feature delivery without deadline slippage;
• created web applications from scratch / supported existing codebases;
• applied unit and integration testing to validate functionality and improve software reliability;
• developed and sustained scalable web applications using modern JavaScript frameworks;

Junior Full Stack Engineer Mar 2021 – Jan 2023
Rezet | IT Service Company
Zaporizhzhya, Ukraine

Tech stack:
Languages: JavaScript / TypeScript
Frontend development: React.js, Next.js (app / page routes)
Backend Development: MongoDB, PostgreSQL, Redis
AI Toolchain: AI workflow automation

Key responsibilities:
• developed and upheld dynamic web applications using modern frameworks such as React and Node.js to
enhance user experience and functionality;
• accelerated the code integration process (lead time) by implementing branching standards in Git, which
virtually eliminated merge conflicts before releases and saved the team up to 6 hours per week.
• enforced responsive design principles to ensure applications functioned optimally across various devices
and screen sizes;
• collaborated with UI/UX designers to translate wireframes and prototypes into functional web applications.
• creation of new code and support for legacy code;
• software development using Kanban/Scrum/Agile methodologies;
• optimized the data layer by replacing redundant REST requests with React Query / Zustand / GraphQL,
which reduced backend load by 35% and eliminated layout shifts during loading;

Education

Computer Science - Master's Degree 2024 - 2026
The Classic Private University
Zaporizhzhia, Ukraine

Computer Science - Bachelor's Degree 2018 - 2022
National Technical University "Kharkiv Polytechnic Institute"
Kharkiv, Ukraine

Skills