SaaS Subscription Billing Portal
Ella delivered clean, reliable code and kept us updated throughout. The billing flows work perfectly and were deployed ahead of schedule. 5 stars.
Hourly Rate
$30 / Hr
Total Earned
$24,853
Experience
14 Years
Skills
- JavaScript
- TypeScript
- React
- Node.js
- Python
- PostgreSQL
- AWS
- Docker
Senior Full Stack Developer
I am Ella Nazarenko, a senior full stack developer with over 8 years of experience building modern web applications and digital products. I specialize in designing scalable back-end systems, intuitive front-end interfaces, and efficient cloud-based deployments. My work focuses on clean code, performance, security, and long-term maintainability. I have collaborated with startups, agencies, and enterprise teams to deliver reliable solutions from concept to production. I bring strong communication, problem-solving, and ownership to every project.
Reviews
33 reviews on file.
E-commerce Checkout Optimization
Fantastic work improving our checkout speed and UX. Ella solved edge cases quickly and communicated clearly at every step. Highly recommended.
Mobile Fitness Tracking App
Ella built a smooth, stable mobile experience with excellent attention to detail. Deadlines were met and the final app exceeded expectations.
Custom CRM Sales Dashboard
Our team loves the new CRM dashboard. Ella understood the business needs, wrote clean code, and made reporting much easier.
AI Document Summarization Tool
Ella created a practical AI tool with a simple interface and strong performance. Great problem solving and thoughtful implementation.
Fintech Wallet Security Upgrade
Security improvements were handled professionally and thoroughly. Ella explained tradeoffs well and delivered a robust, auditable solution.
Healthcare Appointment Booking Platform
Ella developed a dependable booking platform with secure workflows. Communication was excellent and the launch went smoothly.
Marketplace Vendor Onboarding System
The onboarding system is intuitive and scalable. Ella handled complex requirements with patience and delivered high-quality work.
Restaurant Reservation Management App
Ella built exactly what we needed for reservations and table management. Fast turnaround, clean UI, and no surprises.
Social Media Scheduling Tool
Great experience from planning to deployment. Ella delivered a polished scheduling tool and quickly addressed feedback.
IoT Device Monitoring Dashboard
Ella created a real-time dashboard that made our device data usable. Strong architecture and excellent performance tuning.
Marketing Analytics Reporting Suite
Reports are faster, clearer, and easier to manage now. Ella translated vague goals into a practical analytics solution.
Real Estate Listing Portal
Ella delivered a modern listing portal with strong search and filtering. The project was organized, timely, and professional.
Education LMS Integration Project
The LMS integration was seamless and well documented. Ella was responsive, detail-oriented, and easy to work with.
Logistics Route Planning System
Ella improved our route planning workflow dramatically. The solution is fast, reliable, and built with future scaling in mind.
Travel Booking API Integration
API integrations were completed cleanly with excellent error handling. Ella kept timelines clear and delivered production-ready work.
HR Employee Self Service Portal
Ella built a secure and user-friendly HR portal. The code quality was excellent and the rollout was painless.
Inventory Forecasting Web Application
The forecasting app is accurate, fast, and easy for our staff to use. Ella asked smart questions and delivered on time.
Legal Case Management System
Ella handled sensitive workflows with care and precision. The system is organized, secure, and much easier for our firm to manage.
Event Ticketing Platform Migration
Our migration went smoothly with no downtime issues. Ella planned carefully, tested thoroughly, and communicated every milestone.
Customer Support Chatbot Integration
Ella integrated the chatbot cleanly into our support flow. It reduced repetitive tickets and was delivered faster than expected.
Cloud Infrastructure Cost Optimization
Ella cut our cloud costs while improving reliability. Clear recommendations, careful implementation, and measurable results.
Retail POS Data Sync
The POS sync is stable and accurate across all locations. Ella fixed long-standing issues and documented the solution well.
Video Streaming Performance Upgrade
Ella improved stream startup time and reduced buffering noticeably. Excellent technical skill and very professional communication.
Nonprofit Donation Management Platform
The donation platform is simple, secure, and easy to manage. Ella was thoughtful, responsive, and delivered great value.
Construction Project Tracking App
Ella created a practical tracking app our field teams actually use. Strong execution, clean design, and reliable delivery.
Automotive Service Scheduling System
Scheduling is now smoother for staff and customers. Ella understood the workflow quickly and built a dependable system.
Insurance Claims Processing Workflow
Ella streamlined our claims process with smart automation. The final workflow is clear, secure, and easy to maintain.
Gaming Community Web Portal
The portal is fast, engaging, and easy to moderate. Ella delivered polished features and responded quickly to changes.
Food Delivery Admin Dashboard
Ella built a powerful admin dashboard with the metrics we needed. Great code quality, smooth deployment, and clear updates.
Blockchain Transaction Explorer Tool
The explorer is accurate, responsive, and well structured. Ella handled complex data flows with impressive clarity.
Telemedicine Video Consultation Module
Ella delivered a stable video consultation feature with secure access controls. Testing was thorough and launch support was excellent.
Manufacturing Quality Control System
Our quality checks are now easier to track and analyze. Ella built a reliable system and communicated progress consistently.