Олександр

Oleksandr Andriichyshen
Frontend Software Agentic Engineer
📍Poland | Krakow
✉️ [відкрити контакти](див. вище в блоці «контактна інформація»)
📞 [відкрити контакти](див. вище в блоці «контактна інформація») 🔗GitHub
SUMMARY
Senior Frontend Engineer with 5+ years of experience building enterprise-grade applications using React.js and Next.js.
Delivered complex platforms across Fintech, E-Government, and Chemical sectors, including a loan decision
automation system and a B2B marketplace. Experienced with monorepos, microfrontends, and cross-functional teams
of varying sizes. Combines strong engineering fundamentals with modern innovations like Agentic Workflows to build
secure, scalable web applications
TECHNICAL SKILLS
● Front-End: React.js, Next.js, JavaScript/TypeScript, Tailwind, MUI, Ant Design, Mantine, Styled Components, Redux Toolkit,
TanStack Query, Axios, Jest, Vitest, React Testing Library, Stryker, React Hook Form, Yup/Zod, Socket.io, Storybook, Leaflet,
Lodash, i18next, Chart.js
● AI & Agentic Engineering: Mastra, Llamaindex, Claude Code, Agentic Workflows, LLM Integration, AI-Assisted Development
● Back-End: Node.js, Express, Chroma DB, MongoDB, Helmet
● Tools & DevOps: Vercel, Git, Webpack/Vite, Npm/Yarn, CI/CD, Jenkins, Husky, ESLint/Prettier, Jira, Confluence
● Software Development: REST, HTTP, JSON-RPC, OOP, FP, SOLID
● Other: Data Structures & Algorithms, Microfrontend & Monolith, Monorepo, Agile
● Languages: English (Upper-Intermediate), Ukrainian (native), Russian (fluent)
EMPLOYMENT HISTORY
GLOBALDEV | Senior Frontend Agentic Engineer | Jan 2024 - Present
B2B Chemical Marketplace
● Architected and delivered MVP from initial concept to launch
● Established AI-assisted development workflow, accelerating feature delivery by 200%
● Optimized SEO performance leveraging Next.js SSR/SSG capabilities
● Integrated payment infrastructure and molecular editor for chemical structure visualization
● Achieved 85% test coverage and 20% bundle size reduction
● Implemented internationalization support
● Built secure authentication system using cookie-based session management
● Designed feature flag system with granular control
● Integrated Google Analytics for user behavior tracking
Loan Management System
● Engineered microfrontend module enabling the transition from manual to automated loan decisions
● Built a flow validation engine supporting structural and node-level logical validation
● Implemented canvas-based risk evaluation UI
● Implemented flow capabilities including drag & drop, copy/paste, CRUD operations, nested subflows
● Developed npm authorization package enabling centralized authentication across modules
● Optimized application performance, achieving 85% test coverage and 20% bundle size reduction
● Engineered scalable reporting system enabling loan analytics for 10,000+ transactions
● Implemented resilient data fetching layer reducing API failures by 95%
MASCODE | Middle Frontend Engineer (part-time) | Feb 2023 - Feb 2024
● Led integration of Superset as a third-party analytics solution, which reduced new business logic delivery by 70%

o Implemented application-level theming, achieving visual consistency between Superset and the host UI
o Built reusable approach to discover and consume published dashboards across multiple product areas
● Built scalable reporting features within a large Monolithic application
● Created UIKit and Storybook documentation ensuring design consistency
● Improved test robustness by introducing mutation testing across the application
● Refactored performance-critical parts of the application
● Collaborated with stakeholders in a dynamic startup environment to gather, analyze, and refine requirements
ASD TEAM | Middle Frontend Engineer | Oct 2020 - Jun 2023
● Integrated Pendo Analytics for user activity tracking, reducing tracking maintenance time by 100%
● Improved OAuth authentication layer according to modern security standards
● Developed real-time interactive mapping system
● Built communication features including real-time chat, image sharing, video parsing, and PDF generation
● Maintained platform stability through dependency management and version migrations
● Extended and maintained ESLint/Prettier configurations for code consistency
● Provided well-documented UI components via Storybook
● Replaced deprecated packages with custom-built solutions
● Collaborated with business owners to gather, analyze, and refine requirements
EDUCATION
YURIY FEDKOVYCH CHERNIVTSI NATIONAL UNIVERSITY Chernivtsi, Ukraine
Bachelor’s Degree in Cyber Security 2019 - 2021

CHERNIVTSI INDUSTRIAL COLLEGE Chernivtsi, Ukraine
Junior Specialist in Computer Science 2015 - 2019