Paul Tiger

Full-Stack Developer · Remote

Paul Tiger / Shpalich

I build corporate portals that automate the routine,
so your team can focus on what matters.

A timezone that works for you.
GMT+3 · Europe 08–12 · New York 14–19 · New Zealand 16–21

Let's talk

What I do

Corporate Portals

I specialise in building internal portals for small and medium businesses — unified workspaces that bring together documents, employees, tasks, accounting data, and integrations in one place.

Process Automation

Repetitive manual work is expensive. I automate document workflows, notifications, report generation, email processing, and data synchronisation between systems — reducing errors and saving hours every day.

System Integration

REST, SOAP, WebSocket, Active Directory, SharePoint, Telegram/Viber bots, email (IMAP/SMTP), and AI APIs — I connect the tools your business already uses into a coherent, automated whole.

AI-Enhanced Workflows

Integrated OpenAI capabilities directly into the portal — intelligent search, document summarisation, and assistant-driven data entry to further reduce manual effort.

Document Generation from Templates

I work with template engines for DOCX, XLSX, and PDF documents — filling your company's approved forms automatically from tables and structured data, so contracts, invoices, and reports are generated in seconds and always match the approved layout.

Interactive Excel Tables

Clean, well-designed interactive Excel tables that pull data from web services and use custom, non-standard formulas — turning plain spreadsheets into live, always-up-to-date reports.

Technical Stack

Backend

  • Node.js 20+
  • Express.js 5
  • MongoDB / Mongoose
  • Socket.io
  • JWT · bcrypt
  • Active Directory (LDAP)
  • REST · SOAP · XML
  • Winston (logging)

Frontend

  • React 18
  • TypeScript
  • Redux Toolkit
  • React Router 7
  • Ant Design 5
  • AG Grid / AG Charts
  • Chart.js
  • Styled Components

Build & Tooling

  • Webpack 5
  • Babel
  • Gulp · SASS
  • ESLint · Prettier
  • Nodemon · PM2
  • Git

Integrations

  • OpenAI API
  • Telegram Bot
  • Viber Bot
  • Email (IMAP/SMTP)
  • SharePoint
  • Guacamole (RDP/VNC)
  • AWS SDK
  • QR Code Generation

Documents & Media

  • PDF.js · react-pdf
  • LibreOffice Convert
  • Puppeteer
  • Canvas / napi-rs
  • Reveal.js
  • Jodit Rich Editor
  • Markdown / KaTeX

Infrastructure

  • HTTPS / SSL (node-forge)
  • Syslog Server
  • Proxy / Tunnelling
  • ngrok
  • Network Ping Monitor
  • CLI tooling

Featured Project

Corporate Portal

GC-Portal — Internal Business Platform

Node.js · React · MongoDB

A full-featured corporate portal built from scratch for a mid-sized industrial company. The portal replaced a patchwork of spreadsheets, email chains, and disconnected tools with a single, unified internal platform.

Key Modules

📄Document workflow & e-signing
📝Document generation from DOCX / XLSX / PDF templates
👥Employee directory & HR records
🏦Bank operations tracking
🧾Invoices & buyer acts
🚗Fleet / vehicle management
🔬Laboratory management (certs, equipment, steels)
📬Incoming mail & correspondence log
🖥️Remote desktop via Guacamole (RDP/VNC)
🤖AI assistant (ChatGPT integration)
📡Real-time notifications (Socket.io)
🔐Active Directory authentication
📊Charts, dashboards & reporting
📱Telegram & Viber bot notifications
🔒Role-based access control
📑Аccounting system integration
📁SharePoint integration
Node.js React MongoDB Socket.io Ant Design AG Grid TypeScript OpenAI Redux Webpack

Excel & VBA Automation

Spreadsheets are still the backbone of many businesses. Alongside web development, I help teams get far more out of Excel with VBA:

Custom Formulas & Functions

User-defined functions (UDFs) and advanced formulas that encapsulate business logic — complex calculations stay readable, reusable, and easy to maintain.

Large-Data Analysis

Processing workbooks with hundreds of thousands of rows: cleaning, deduplication, aggregation, pivot-ready datasets, and clear summary reports.

Workbook Automation

Macros that remove repetitive steps — report generation, formatting, merging files, data refreshes — turning hours of manual work into a single click.

Interactive Workbooks

Dialog windows (UserForms), dropdown menus, dependent lists, and drill-down sub-tables that turn a plain sheet into a friendly mini-application.

Excel ↔ Web & Databases

Connecting workbooks to web applications, web services, and databases: HTTP/REST requests, JSON/XML parsing, ADO/SQL queries, and automated data exchange between files.

VBA UDFs UserForms Pivot Tables ADO / SQL HTTP (MSXML2) JSON / XML

Working with Remote Clients

Timezone Availability

I'm based in GMT+3 and available for real-time communication during your working hours:

  • 🇪🇺Europe08:00 – 12:00
  • 🇺🇸USA (New York)14:00 – 19:00
  • 🇳🇿New Zealand16:00 – 21:00

Asynchronous Workflow

Our working hours complement each other: I can pick up tasks at the end of your day and keep things moving in between — with a clear status update waiting for you each morning.

Communication

Fluent written English. I work via email, Slack, or any tool your team prefers. Clear updates at each stage — no surprises.

Get in Touch

Looking for a reliable remote developer for your next project?
I'd love to hear what you're building.