SaaS Billing Portal Refactor
Martina cleaned up our billing flow and reduced checkout errors fast. Clear communication, solid code quality, and delivered ahead of schedule.
Hourly Rate
$32 / Hr
Total Earned
$19,000
Experience
16 Years
Skills
- JavaScript
- TypeScript
- React
- Node.js
- Python
- REST API Development
- PostgreSQL
- AWS
Senior Full Stack Developer
I am Martina Bayles, a full stack developer with over 8 years of experience designing, building, and maintaining modern software solutions. I specialize in developing scalable web applications, robust APIs, and efficient backend systems that support real-world business needs. My work focuses on clean code, performance, security, and maintainable architecture across the full development lifecycle. I collaborate effectively with product teams, designers, and stakeholders to deliver practical, high-quality technical solutions. I am passionate about solving complex problems and continuously improving systems through thoughtful engineering practices.
Reviews
39 reviews on file.
E-commerce Search Optimization
Excellent work improving product search speed and relevance. Martina explained tradeoffs clearly and shipped a polished solution.
Mobile Fitness App Backend
Martina built a reliable API for our app with great documentation. Timely delivery and thoughtful problem solving throughout.
Custom CRM Workflow Automation
She automated our lead pipeline exactly as requested. Communication was excellent and the final system saved our team hours weekly.
Executive Analytics Dashboard
Martina delivered a clean dashboard with accurate metrics and fast load times. Very professional, responsive, and detail oriented.
AI Support Chat Tool
Great implementation of our AI support assistant. Martina handled edge cases well and deployed everything smoothly.
Fintech Reporting API Integration
Martina integrated complex financial APIs without drama. Her code was clean, secure, and delivered right on time.
Healthcare Appointment Scheduling System
The booking system works beautifully and meets our privacy requirements. Martina was organized, reliable, and easy to work with.
Marketplace Vendor Onboarding Platform
Martina improved onboarding and fixed several workflow gaps. Strong architecture choices and very clear status updates.
Hotel Booking Engine Upgrade
She modernized our booking engine and improved conversion tracking. Fast turnaround, excellent testing, and smooth deployment.
Social Community Moderation Tools
Martina built moderation features that our admins love. She understood the product quickly and delivered high quality work.
IoT Device Monitoring Console
Fantastic work creating a stable monitoring console for our devices. Martina handled real-time data and alerts expertly.
Marketing Attribution Data Pipeline
Martina rebuilt our attribution pipeline and made reports trustworthy again. Great communication and very dependable delivery.
Real Estate Listing Platform
She delivered a fast, intuitive listing platform with strong search filters. Code quality and responsiveness were both excellent.
EdTech Course Management Portal
Martina created a clean portal for courses, students, and progress tracking. She was patient, precise, and consistently on schedule.
Logistics Route Planning Dashboard
The dashboard gave our dispatchers exactly what they needed. Martina solved performance issues quickly and communicated every step.
Restaurant Online Ordering System
Martina built a reliable ordering flow with payment integration. The launch was smooth and support after delivery was excellent.
Nonprofit Donor Management App
She delivered a practical donor system that is easy for staff to use. Martina was responsive, thoughtful, and technically strong.
Cybersecurity Audit Reporting Tool
Martina turned our audit process into a clean reporting tool. Great attention to security, permissions, and export accuracy.
Subscription Video Platform Migration
Our migration was completed with minimal downtime. Martina planned carefully, tested thoroughly, and kept us informed.
Retail Inventory Sync Service
Martina fixed our inventory sync issues across stores and online channels. Reliable work, clear updates, and excellent debugging.
Travel Itinerary Mobile Companion
She built a polished backend for itinerary updates and notifications. Martina was quick, flexible, and very professional.
Legal Document Review Portal
Martina developed a secure portal with role-based access and clean document workflows. The final product exceeded expectations.
HR Recruitment Tracking System
The recruitment tracker is intuitive and stable. Martina translated our messy process into a clean, useful application.
Construction Project Cost Tracker
Martina built a cost tracking tool that our field managers adopted immediately. Great UX sense and strong technical execution.
AI Image Tagging Workflow
She integrated image tagging into our content workflow seamlessly. Martina handled API limits, retries, and deployment perfectly.
Fleet Maintenance Alert Platform
Martina delivered automated alerts and service logs that work flawlessly. She was proactive and solved issues before launch.
Insurance Claims Intake Portal
The claims intake portal is secure, simple, and efficient. Martina managed requirements well and delivered clean, tested code.
Podcast Publishing Automation System
Martina automated our publishing workflow and reduced manual steps dramatically. Fast, communicative, and highly skilled.
Manufacturing Quality Control Dashboard
She created a dashboard that made defect trends obvious. Martina’s data handling and interface work were both excellent.
Banking KYC Verification Module
Martina implemented the KYC module with strong validation and audit logging. Very careful, secure, and deadline focused.
Event Ticketing Checkout Flow
Our checkout flow is faster and much easier to use. Martina handled payment edge cases and delivered a smooth release.
Agriculture Sensor Data Platform
Martina built a platform for sensor readings, alerts, and historical charts. Excellent technical judgment and communication.
Gaming Leaderboard Service API
She built a fast leaderboard service that handles spikes well. Martina’s architecture was simple, scalable, and well documented.
Telemedicine Patient Messaging App
Martina delivered secure patient messaging with a clean interface. She was responsive and handled compliance concerns carefully.
Property Management Tenant Portal
The tenant portal is easy to use and reduced support requests immediately. Martina was efficient, organized, and dependable.
Cloud Infrastructure Cost Optimization
Martina reviewed our cloud setup and cut monthly costs without hurting performance. Clear recommendations and excellent execution.
Warehouse Barcode Scanning App
She built a practical scanning app that improved warehouse accuracy. Martina tested thoroughly and delivered exactly what we needed.
Customer Success Health Score Dashboard
Martina created a reliable health score dashboard with useful alerts. Great collaboration, clean data modeling, and timely delivery.