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ANNA KARPUS
Full-Stack Developer • React, TypeScript, Node.js & MongoDB
[open contact info](look above in the "contact info" section) • [open contact info](look above in the "contact info" section) • LinkedIn • GitHub • Khmelnytskyi, Ukraine (Remote)
PROFESSIONAL SUMMARY

Full-Stack Developer with 2.5+ years of experience building responsive, production-grade web applications with React,
TypeScript, Redux Toolkit and REST APIs with Node.js, Express and MongoDB. Skilled in shipping quantifiable
improvements to complex, data-heavy interfaces, maintaining secure and scalable front-end architecture, and resolving
critical vulnerabilities under time pressure. Experienced in applying AI tooling to real engineering workflows, including
designing agentic Claude Code pipelines. Designed and shipped a full-stack e-commerce platform end-to-end, from
secure JWT authentication to MongoDB aggregation-based analytics.
TECHNICAL SKILLS

Languages: JavaScript (ES6+), TypeScript, HTML5, CSS3
Frontend: React, Redux Toolkit, React Router, Tailwind CSS, Ant Design, Headless UI, Recharts
Backend & Databases: Node.js, Express.js, REST APIs, MongoDB, Mongoose
AI & Automation: Claude Code (agentic subagents, custom skills), Anthropic API, n8n workflow automation, Jira
Automation Rules
APIs & Integrations: Atlassian Forge API & Resolvers, Cloudinary, data validation, permission handling
Build & Deployment: Vite, Webpack, Git, GitHub Actions, Bitbucket Pipelines, Vercel, Render, Postman
Security & Quality: JWT authentication, bcrypt, Joi, rate limiting, ESLint, Snyk, Burp Suite
Collaboration: Jira, GitHub, Bitbucket, Figma, Confluence, Slack
Spoken Languages: English (Fluent), Ukrainian (Native), German (Intermediate)
WORK EXPERIENCE

React Developer | Grandia Solutions Mar 2024 – Present Remote
● Engineered 10+ core UI features across a 10-person team, including a hub-cloning system that eliminated manual
reconfiguration of 2–3 reports per hub (saving up to ~9 minutes per operation across 13 report types), and a date-filtering
system replacing full-dataset pagination for multi-year project histories.
● Architected and maintained production React/TypeScript applications (Redux Toolkit, Ant Design, Tailwind CSS)
integrated with the Atlassian Jira platform via Forge, working full-stack across scalable front-end architecture, backend
resolvers, and REST APIs.
● Set up CI/CD pipelines using GitHub Actions and Bitbucket Pipelines to automate build, test, and deployment
workflows for the team's React application, shortening release cycles and reducing manual deployment overhead.
● Diagnosed and resolved a critical authentication vulnerability through systematic troubleshooting, implementing
permission validation to close the gap; separately triaged and fixed ~10 dependency vulnerabilities flagged by Snyk.
● Designed and deployed an agentic AI workflow with Claude Code custom subagents for automated bug triage —
covering ticket fetching, code analysis, root-cause identification, fix suggestions, and test generation — cutting resolution
time from 1–2 hours to 30–40 minutes.
● Designed 4 Jira automation rules and custom fields, reducing manual workflow steps and improving team
task-management efficiency.

Freelance Full-Stack Developer | EkoLad Jun 2026 – Present Remote
Live: honey-shop-web.vercel.app
● Designed and shipped a responsive e-commerce platform with catalog, cart, checkout, blog and admin panel (React
19, TypeScript, Tailwind CSS).
● Built a REST API with Node.js, Express and MongoDB, deployed on Render with the frontend on Vercel.
● Implemented secure JWT authentication with rotating refresh tokens, httpOnly cookies and silent token refresh synced
across browser tabs.
● Built an admin analytics dashboard with MongoDB aggregation pipelines and Recharts, plus server-side pagination,
filtering and search.
● Improved load performance with code splitting, idle-time prefetching, asset preloading and Cloudinary image
optimization.
● Protected public forms from abuse with rate limiting and Joi validation, and ensured data consistency with atomic
counters and unique indexes.
CERTIFICATIONS
Claude Certified Architect – Foundations — Anthropic, 2026
Credential for designing and building production-grade applications with Claude, covering Claude Code, the Claude Agent SDK, the
Claude API, and MCP.
EDUCATION
Master of Philology — The National University of Ostroh Academy, 2017 – 2022, Ukraine