Особисті дані приховані

CONTACTS
Mark B. [відкрити контакти](див. вище в блоці «контактна інформація»)
Telegram: @bbshkin
FULL STACK DEVELOPER [відкрити контакти](див. вище в блоці «контактна інформація»)
5+ YEARS · Frontend · Full Stack
DATE OF BIRTH · 29 September 1996

PROFILE
Full Stack Developer with 5+ years of commercial experience building production web applications with React and TypeScript.
Experienced in complex interfaces, real-time communication, scheduling systems, interactive visualizations, and document workflows.
Also experienced in full-stack development, including NestJS backends, Docker, CI/CD, shared component libraries, Storybook, and
data-heavy applications. Follow SOLID principles, clean architecture, and design patterns.

TECHNICAL SKILLS

React · Next.js · TypeScript · JavaScript (ES6+) · HTML5 · CSS3 · SASS/SCSS · Tailwind CSS · Responsive &
Frontend
Accessible UI

Backend NestJS · Node.js · Express.js · PostgreSQL · SQL · Prisma · TypeORM · Socket.IO · JWT Auth

State & Data Redux Toolkit · TanStack Query · Zustand · Formik · React Hook Form · Axios · REST API · WebSockets

Integrations GetStream · Stripe · PDF.js · Konva.js · React Router

Testing & Quality Jest · React Testing Library · Cypress · ESLint · Prettier

Feature-Sliced Design (FSD) · SOLID · Design patterns · Clean architecture · Storybook · Shared component
Architecture & UI
libraries · Monorepo · Design systems · Figma

DevOps Docker · CI/CD · GitHub Actions · Git · Vite · Webpack · npm/yarn

EXPERIENCE

Ficus Technologies April 2021 – May 2026 · 5 years
Full Stack / Frontend Developer · Remote. Worked on five commercial products as part of the company's engineering team; projects listed
below in reverse chronological order.

TutorBoard — Full Stack Developer September 2025 – May 2026
Online tutoring platform with a real-time collaborative whiteboard, lesson scheduling, and student progress tracking for tutors and learners.
• Architected the product from zero to production: Feature-Sliced Design on the frontend and a modular NestJS backend built on SOLID
principles and design patterns (Repository, Strategy, Factory, Observer), enabling new features to be added without touching existing
modules.
• Delivered a real-time collaborative whiteboard (Konva.js + Socket.IO) supporting drawing, shapes, text, images, and live multi-user
cursors with conflict-free state sync across participants.
• Shipped lesson rooms with persisted board state, session history, and one-click PDF export, so tutors and students can revisit every
lesson after it ends.
• Built tutor and student dashboards, availability-based lesson scheduling, and booking flows that turned the whiteboard into a complete
end-to-end tutoring workflow.
• Implemented secure authentication and role-based access (tutor / student / admin) with JWT and refresh tokens.
• Designed the PostgreSQL schema and REST API with Prisma and NestJS; achieved high test coverage with Jest and React Testing
Library on the frontend, unit/e2e tests on the backend, and Cypress for critical user flows.
• Set up Dockerized environments and GitHub Actions CI/CD with automated test runs, making every release reproducible and reducing
manual deployment effort.
Technologies: React, TypeScript, Next.js, FSD, TanStack Query, Zustand, Konva.js, Socket.IO, Tailwind CSS, NestJS, PostgreSQL, Prisma, JWT,
Docker, GitHub Actions, Jest, React Testing Library, Cypress

Ledgerly — Full Stack Developer June 2024 – September 2025
Consulting platform combining a client-facing application, administration panel, and backend for data-heavy financial workflows.
• Designed the application architecture from scratch and led full-cycle development of the platform (client app, admin panel, backend)
from the first commit to production.
• Structured the frontend with Feature-Sliced Design and applied SOLID principles and design patterns (Repository, Adapter, Strategy)
across the stack, resulting in a codebase that stayed maintainable and testable as the product grew.
• Designed the PostgreSQL schema and optimized SQL queries for data-heavy financial reports, keeping report generation fast as data
volumes increased.
• Implemented complex financial calculations and interactive data visualizations that became the core value of the consulting workflow.
• Built the administration panel for managing application data and business operations, removing the need for manual database changes.
• Created and maintained a shared component library documented in Storybook and published as a package, ensuring UI consistency
and faster feature delivery across the client and admin apps.
• Established a testing culture: Jest and React Testing Library on the frontend, unit and e2e tests for NestJS modules, and Cypress e2e
flows, all running automatically in the CI/CD pipeline.
• Containerized development and deployment with Docker and CI/CD, giving the team reproducible environments and one-step
deployments.
Technologies: React, TypeScript, FSD, NestJS, PostgreSQL, SQL, TanStack Query, Zustand, Jest, React Testing Library, Cypress, Docker, CI/CD,
Storybook, shared component library

InteractX — Frontend Developer May 2023 – June 2024
Real-time communication and document collaboration platform combining messaging with PDF review and approval workflows.
• Delivered a full-featured real-time messenger on GetStream with threads, reactions, typing indicators, and read receipts, giving users a
chat experience on par with mainstream messaging apps.
• Built secure PDF upload, preview, download, and interactive annotation with PDF.js and Konva.js, turning static documents into
collaborative review workspaces.
• Implemented signatures, highlights, drawings, and contextual comments directly on documents, enabling end-to-end review and
approval without leaving the platform.
• Introduced role-based access and granular permissions for documents and annotations, meeting the security requirements of business
customers.
• Integrated backend file storage and document versioning so every change to a document is tracked and recoverable.
• Optimized rendering of large PDFs and real-time interactions, eliminating lag on multi-hundred-page documents and keeping the UI
responsive.
Technologies: React, TypeScript, Next.js, Redux Toolkit, React Query, PDF.js, Konva.js, GetStream, Tailwind CSS, SASS/SCSS, REST API, Vite,
Jest, Cypress

SpaceBooker — Full Stack Developer March 2022 – May 2023
Interactive office space visualization and desk booking platform with real-time availability and an administration interface.
• Built an interactive office map on Konva.js for workspace navigation and desk selection, replacing a plain list-based booking UI with a
visual one that employees could use without training.
• Implemented desk booking with reservation validation and real-time availability updates, eliminating double bookings.
• Developed the backend on Node.js and Express.js (REST API, booking and availability logic, PostgreSQL data layer) and the admin
panel with access control, zone management, statistics, and manual overrides.
• Redesigned the customer interface for usability, responsiveness, and accessibility, making the product fully usable on mobile.
• Introduced Docker for local development and drove ongoing refactoring and performance work that kept the codebase healthy as
features grew.
Technologies: React, TypeScript, JavaScript, Konva.js, Formik, React Router, Node.js, Express.js, PostgreSQL, REST API, Docker, Webpack,
SASS/SCSS

NauticScheduler — Frontend Developer April 2021 – March 2022
CRM platform for a marine service company covering bookings, scheduling, payments, technician management, and internal operations.
• Built the frontend architecture and core functionality from scratch with React and TypeScript, laying the foundation the product was
developed on going forward.
• Integrated Stripe payment flows for deposits, full payments, and invoicing, enabling the company to take payments online instead of
manually.
• Built a calendar scheduling system with real-time visualization, technician assignment, and drag-and-drop rescheduling that became the
dispatchers' main daily tool.
• Implemented dynamic booking flows with availability checking and appointment status tracking, reducing scheduling conflicts.
• Improved load times through lazy loading and code splitting, and redesigned major parts of the application for usability, responsiveness,
and accessibility.
• Refactored legacy components and paid down technical debt, making the codebase easier to extend.
Technologies: React, TypeScript, Redux Toolkit, React Query, JavaScript, Tailwind CSS, SASS/SCSS, Formik, Stripe, Webpack, Jest, REST API

EDUCATION & LANGUAGES

Zaporizhzhia National University Languages Date of birth
Bachelor's Degree in Thermal Power Engineering Ukrainian — Native (C2) 29 September 1996
Faculty of Power Engineering · 2014 – 2019 English — Intermediate (B1)