Hi, I'm
Andrew Leonenko
Managing Member, Leonenko Group, LLC | Senior AI Engineer
Building enterprise SaaS platforms across healthcare, finance, and legal tech. Specializing in AI, cloud architecture on Azure, and Microsoft 365 solutions.
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Years
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Projects
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AI Systems
Skills
01
Frontend Development
Modern frontend development with React ecosystem, mobile apps, and responsive design
React
React Native
Next.js
TypeScript
JavaScript
HTML5
CSS3
Tailwind CSS
Redux
Expo
Vite
Responsive Design
UI/UX Implementation
02
Backend Development
Full-stack backend services, APIs, and server-side architecture
Node.js
Express.js
Python
FastAPI
PHP
Laravel
RESTful APIs
GraphQL
Microservices
WebSockets
JWT
03
Cloud & DevOps
Cloud infrastructure, containerization, and deployment automation
AWS
Azure
GCP
Docker
Kubernetes
CI/CD
GitHub Actions
Terraform
Vercel
Netlify
04
Databases & Storage
Relational and NoSQL databases, caching, and data architecture
PostgreSQL
MongoDB
MySQL
Redis
SQL Server
Firebase
Elasticsearch
Vector Databases
Database Design
05
AI & Machine Learning
AI/ML implementation, large language models, and intelligent automation
OpenAI GPT
Google Gemini
Claude AI
Azure AI Foundry
Azure AI Studio
LangChain
Prompt Engineering
RAG Systems
TensorFlow
Vector Databases
AI Integration
06
Microsoft Ecosystem
Microsoft enterprise solutions and business intelligence platforms
Power Platform
SharePoint
SPFX
PowerBI
Office 365
Teams
Microsoft Copilot
Azure AI Services
07
Development Tools & Testing
Development workflow, testing frameworks, and productivity tools
Git
VS Code
Jest
React Testing Library
Cypress
Postman
Jira
Figma
ESLint
Chrome DevTools
08
Soft Skills & Methodologies
Leadership, project management, and collaborative development practices
Problem Solving
Team Leadership
Agile/Scrum
Project Management
Technical Writing
Mentoring
Communication
Code Reviews
Need a Developer?
I help businesses and startups build exceptional web applications, mobile apps, and user experiences. Let's discuss your project.
Recent Posts
Latest
How I Built Selloquence: Lessons From Turning a Side Project Into a Real Product
The story behind Selloquence, an AI-powered listing optimizer for online sellers, and what I learned about building a product people actually want to use.
SaaSSide ProjectAI
Building AI Document Intelligence in Microsoft 365: A Developer's Guide
Learn how to build intelligent document processing systems using Microsoft Azure AI services and Power Platform. Real-world insights from implementing enterprise-scale solutions in healthcare and legal tech.
AIMicrosoft 365
Building Effective Agents: Three Core Principles for AI Engineers
A deep dive into building production-ready AI agents with practical insights on when to use agents, how to keep them simple, and the importance of thinking from the agent\'s perspective.
AIAgents