SaaS Billing Portal Refactor
Madison cleaned up our billing workflows and improved performance noticeably. Communication was clear, and the final code was easy for our team to maintain.
Hourly Rate
$31 / Hr
Total Earned
$23,511
Experience
12 Years
Skills
- JavaScript
- TypeScript
- React
- Node.js
- Python
- REST API Development
- PostgreSQL
- AWS
Senior Full Stack Developer | 12+ Years | Complex API Integrations, Python, React, Cloud Architecture & AI Automation
I am Madison Yanukovich, a Senior Full Stack Developer with over 12 years of experience building complex, scalable, and high-performance software solutions.
I specialize in solving challenging technical problems, developing advanced API integrations, synchronizing data across multiple platforms, automating business processes, and architecting enterprise-level applications.
My Technical Stack:
Frontend: React, Next.js, TypeScript, JavaScript, HTML5, CSS3, Tailwind CSS
Backend: Python, Node.js, FastAPI, Django, Express.js
APIs & Integrations: REST APIs, GraphQL, Webhooks, Third-Party Integrations, OAuth, Real-Time Data Synchronization
Databases: PostgreSQL, MySQL, MongoDB, Redis
Cloud & DevOps: AWS, Google Cloud, Azure, Docker, Kubernetes, CI/CD, GitHub Actions
AI & Automation: OpenAI API, LLM Integrations, AI Agents, Workflow Automation, Intelligent Data Processing
Architecture: Microservices, SaaS Platforms, Enterprise Systems, Scalable Backend Infrastructure
I have extensive experience connecting complex systems, handling large datasets, building custom business applications, and transforming complicated requirements into reliable, production-ready solutions.
From sophisticated API integrations and enterprise platforms to AI-powered applications and modern web systems, I combine deep technical expertise with practical problem-solving to deliver secure, scalable, and maintainable software.
My focus is on engineering solutions that go beyond basic development — solving the difficult technical challenges that businesses face.
Reviews
20 reviews on file.
E-Commerce Checkout Optimization
Excellent work from start to finish. Madison reduced checkout friction, fixed payment edge cases, and delivered everything ahead of schedule.
Healthcare Patient Dashboard
Madison built a secure and intuitive dashboard for our clinic staff. The attention to detail, reliability, and documentation were outstanding.
Fintech Transaction Monitoring Tool
We needed a complex data tool delivered quickly, and Madison handled it perfectly. Clean architecture, strong testing, and great problem solving.
Mobile App Backend API
Madison created a stable backend that scaled well during launch. Updates were frequent, and every technical decision was explained clearly.
CRM Workflow Automation System
Our sales team saved hours each week thanks to Madison's automation work. The implementation was smooth, dependable, and well documented.
AI Content Review Platform
Madison integrated AI features into our review process with impressive accuracy. The code was clean, secure, and delivered right on time.
Marketplace Vendor Management Portal
Great experience working with Madison. The vendor portal is fast, polished, and handles permissions exactly as we needed.
Hotel Booking System Upgrade
Madison modernized our booking flow without disrupting live reservations. Strong communication and careful deployment made the project stress free.
Social Media Scheduling App
Madison transformed our prototype into a production-ready app. The interface feels smooth, and the backend scheduling logic works flawlessly.
IoT Device Monitoring Dashboard
We were impressed by Madison's ability to simplify messy device data. The dashboard is reliable, responsive, and easy for operators to use.
Analytics Reporting Data Pipeline
Madison rebuilt our reporting pipeline and eliminated several recurring failures. The solution is faster, cleaner, and much easier to monitor.
Real Estate Listing Platform
Madison delivered a polished listing platform with great search performance. Feedback was handled quickly, and the launch went smoothly.
Learning Management System Integration
Madison connected our LMS with multiple third-party services seamlessly. The integration was stable, well tested, and completed on budget.
Logistics Route Planning Tool
Fantastic technical partner for a difficult routing project. Madison found practical solutions and produced clean, efficient code.
Restaurant Ordering Web App
Madison built a fast ordering app that our customers love. The payment flow, admin tools, and deployment were all handled professionally.
Cybersecurity Audit Remediation
Madison helped us close critical security gaps with clear priorities and precise fixes. The final handoff included excellent documentation.
Subscription Video Streaming Platform
Madison improved playback reliability and subscription handling significantly. The work was thoughtful, organized, and production ready.
Nonprofit Donation Management CRM
Madison understood our nonprofit's needs quickly and built a simple, dependable CRM. The donation tracking features work exactly as requested.
Manufacturing Inventory Control System
Madison delivered a robust inventory system with barcode support and clear reporting. The rollout was smooth, and support after launch was excellent.