Maksym Musii
AI Full Stack Developer | Senior Web & Mobile App | MVP/SaaS, CRM/ERP
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Why should you work with me ?

As a Full Stack developer with 10 years of experience, I specialize in full-stack development with a keen focus on React, React Native, Next.js, Node.js, Python (Django/FastAPI), Laravel, and Golang, delivering exceptional services to clients, driving impactful solutions, and fostering digital innovation.

What I can help you build:

ใƒป๐’๐š๐š๐’ platforms and ๐Œ๐•๐๐ฌ
ใƒปCustom ๐‚๐‘๐Œ and ๐„๐‘๐ systems
ใƒป๐„-๐œ๐จ๐ฆ๐ฆ๐ž๐ซ๐œ๐ž and ๐Œ๐š๐ซ๐ค๐ž๐ญ๐ฉ๐ฅ๐š๐œ๐ž platforms 
ใƒป๐…๐ข๐ง๐š๐ง๐œ๐ข๐š๐ฅ & ๐€๐œ๐œ๐จ๐ฎ๐ง๐ญ๐ข๐ง๐   platforms
ใƒป๐ƒ๐š๐ฌ๐ก๐›๐จ๐š๐ซ๐๐ฌ, ๐š๐๐ฆ๐ข๐ง ๐ฉ๐š๐ง๐ž๐ฅ๐ฌ, and ๐ข๐ง๐ญ๐ž๐ซ๐ง๐š๐ฅ ๐ญ๐จ๐จ๐ฅ๐ฌ
ใƒป๐’๐ฎ๐›๐ฌ๐œ๐ซ๐ข๐ฉ๐ญ๐ข๐จ๐ง systems(๐’๐ญ๐ซ๐ข๐ฉ๐ž, ๐›๐ข๐ฅ๐ฅ๐ข๐ง๐ , ๐ซ๐จ๐ฅ๐ž๐ฌ/๐ฉ๐ž๐ซ๐ฆ๐ข๐ฌ๐ฌ๐ข๐จ๐ง๐ฌ)
ใƒป๐€๐๐ˆ integrations and A๐ฎ๐ญ๐จ๐ฆ๐š๐ญ๐ข๐จ๐ง workflows
ใƒป๐Œ๐จ๐›๐ข๐ฅ๐ž ๐š๐ฉ๐ฉ๐ฌ (๐‘๐ž๐š๐œ๐ญ ๐๐š๐ญ๐ข๐ฏ๐ž)
ใƒป๐๐š๐œ๐ค๐ž๐ง๐ systems with ๐ƒ๐ฃ๐š๐ง๐ ๐จ, ๐…๐š๐ฌ๐ญ๐€๐๐ˆ, ๐๐จ๐๐ž.๐ฃ๐ฌ, ๐‹๐š๐ซ๐š๐ฏ๐ž๐ฅ, or ๐†๐จ๐ฅ๐š๐ง๐ 

 I have spearheaded front-end and back-end development initiatives, crafting intuitive user interfaces, optimizing user experiences, and ensuring seamless navigation and robust performance across devices.

My focus is not just delivering features, but building systems that are stable, maintainable, and ready to grow with your business.

I work across the full product lifecycle:

ใƒปSystem architecture and database design
ใƒปBackend APIs and integrations
ใƒปFrontend development (web + mobile)
ใƒปPayments, subscriptions, and business logic
ใƒปDeployment, scaling, and performance optimization

๐Œ๐ฒ ๐’๐ค๐ข๐ฅ๐ฅ๐ฌ:

๐๐ซ๐จ๐ ๐ซ๐š๐ฆ๐ฆ๐ข๐ง๐  & ๐…๐ซ๐š๐ฆ๐ž๐ฐ๐จ๐ซ๐ค๐ฌ

Python (Django, FastAPI), Node.js (NestJS, Express), PHP (Laravel), Golang
JavaScript (ES6+), TypeScript, React, Next.js, React Native
REST & GraphQL API Development

๐…๐ซ๐จ๐ง๐ญ๐ž๐ง๐ ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ

React, Next.js, TypeScript
Tailwind CSS, Material UI, shadcn/ui, Bootstrap
Responsive UI, performance optimization, component architecture

๐๐š๐œ๐ค๐ž๐ง๐ & ๐’๐ฒ๐ฌ๐ญ๐ž๐ฆ ๐ƒ๐ž๐ฌ๐ข๐ ๐ง

Django, FastAPI, Node.js, Laravel, Golang
Microservices & modular architecture
Authentication (JWT, OAuth), API design, business logic implementation

๐ƒ๐š๐ญ๐š๐›๐š๐ฌ๐ž๐ฌ & ๐ƒ๐š๐ญ๐š ๐’๐ฒ๐ฌ๐ญ๐ž๐ฆ๐ฌ

PostgreSQL, MySQL, MongoDB
Redis (caching, queues)
Elasticsearch (search & indexing)
Supabase (BaaS, real-time systems)

๐‚๐ฅ๐จ๐ฎ๐, ๐ƒ๐ž๐ฏ๐Ž๐ฉ๐ฌ & ๐ˆ๐ง๐Ÿ๐ซ๐š๐ฌ๐ญ๐ซ๐ฎ๐œ๐ญ๐ฎ๐ซ๐ž

AWS, Vercel, GCP(Cloud Run, BigQuery, IAM)
Docker, CI/CD (GitHub Actions)
NGINX, server configuration
Scalable deployment & performance optimization

๐ˆ๐ง๐ญ๐ž๐ ๐ซ๐š๐ญ๐ข๐จ๐ง๐ฌ & ๐€๐๐ˆ๐ฌ

Stripe (payments, subscriptions)
Twilio (SMS/communication)
CRM/ERP integrations (Hubspot, SendPulse, Blip, Kommo)
Third-party APIs, webhooks, automation workflows
SSO, Middleware Development & System Integration

๐ƒ๐š๐ญ๐š & ๐€๐ˆ

NumPy, Pandas, Scikit-learn
TensorFlow, MLflow
Power BI (analytics & reporting)
OpenAI API, LangChain
Workflow/agents: CrewAI, OpenClaw

๐“๐จ๐จ๐ฅ๐ฌ & ๐๐ฅ๐š๐ญ๐Ÿ๐จ๐ซ๐ฆ๐ฌ: Git, GitHub, Bitbucket, Jira, Asana, Trello, Confluence VS Code, PyCharm, Postman, pgAdmin, Figma, Adobe XD Slack API, Google Workspace, Notion Linux, Bash Scripting, Shell Automation


Why clients work with me

ใƒปI understand both product logic and technical implementation
ใƒปI join an existing codebase and improve it without breaking structure
ใƒปI communicate clearly and keep work organized
ใƒปI build scalable architecture, not temporary patches
ใƒปI focus on business outcomes, clean delivery, and long-term maintainability

Whether you need to build a new MVP, improve an existing SaaS product, add AI features, automate internal operations, or develop a CRM/ERP system, I can help you turn the idea into a stable, production-ready product.

If you need a developer who can take ownership of your product and deliver a clean, production-ready system, Iโ€™m ready to help.

My Specializations

  • CSS
  • Web
  • JavaScript Developers
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