You will get a full stack application with Rails or Django
Top Rated

Project details
With over five years of experience as a React and front-end developer, I specialize in creating fast, responsive, and user-friendly websites, dynamic user interfaces, reusable web components, server-side applications, and robust admin dashboards.
Expertise:
• Technologies: React.js, Node.js, Redux, AngularJS, MERN Stack
• Development Areas: API integration, GraphQL, Agile development, cross-browser compatibility, and data visualization using libraries like Highcharts and Line Graphs
I have in-depth knowledge of React libraries such as Redux, React Router, and Material-UI, which help me develop efficient and scalable applications. Additionally, I offer customization, updates, and bug fixes for React-based projects at an hourly rate.
✅Services include:
• Building modern and dynamic applications
• Seamless API integrations
• Optimization for performance and compatibility across browsers
• Implementing tools like Axios, Redux-Saga, and advanced charting techniques
Let's discuss your project in detail via Upwork Chat.
Looking forward to collaborating with you to bring your ideas to life!
Expertise:
• Technologies: React.js, Node.js, Redux, AngularJS, MERN Stack
• Development Areas: API integration, GraphQL, Agile development, cross-browser compatibility, and data visualization using libraries like Highcharts and Line Graphs
I have in-depth knowledge of React libraries such as Redux, React Router, and Material-UI, which help me develop efficient and scalable applications. Additionally, I offer customization, updates, and bug fixes for React-based projects at an hourly rate.
✅Services include:
• Building modern and dynamic applications
• Seamless API integrations
• Optimization for performance and compatibility across browsers
• Implementing tools like Axios, Redux-Saga, and advanced charting techniques
Let's discuss your project in detail via Upwork Chat.
Looking forward to collaborating with you to bring your ideas to life!
Programming Languages
PHP, Python, Ruby/Ruby on RailsCoding Expertise
Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$99
|
Standard
$299
|
Advanced
$599
|
|---|---|---|---|
| Delivery Time | 1 day | 3 days | 5 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 3 | 6 |
Design Customization | |||
Content Upload | |||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Additional Page
(+ 2 Days)
+$99
10 reviews
(8)
(1)
(1)
(0)
(0)
This project doesn't have any reviews.
TW
Timothy W.
Aug 7, 2026
Full Backend Build — Supabase Auth, Stripe, Anthropic API Proxy, Transcript Puller
MC
Mike C.
Apr 2, 2025
Enterprise Client seeking Retool App Developer
Hassan worked on some internal tooling for us, and always executed his work to a high standard, delivering high-quality results. He has a great understanding of end-to-end software development and the ins-and-outs of building with Retool. He was able to have a significant impact for our company.
CF
Continental F.
Sep 27, 2024
Shopify Till Integration
Hassan was very pleasant to work with and took the time to understand the problem to solve and develop. He was very responsive and despite some unexpected additional work required not initially scoped, he navigated it well and I was happy to add a bonus for his hard work.
TS
Trevor S.
Sep 26, 2024
Change background removal technology from Euphoria to Unscreen
This guy knows what he's doing. Thank you
DA
Dorothy A.
Aug 7, 2024
Retool Expert with JavaScript/React Expertise
About Hassan
Medical Billing & RCM Software Engineer | Claims, EDI, Healthcare AI
100%
Job Success
Lahore, Pakistan - 5:31 am local time
I'm Hassan Ali, founding engineer at a US medical billing company and CTO of TalenDevs. I designed and shipped a complete custom billing platform end-to-end — encounter intake through claims processing, reconciliation, and reporting — replacing spreadsheet-driven manual billing with automated backend logic. It has been live and expanding for over a year. I hold HIPAA Awareness (Business Associates) and HIPAA Security certification, work under signed BAAs, and build to HIPAA Security Rule standards: role-based access control, audit logging, and
Top Rated on Upwork with 100% Job Success, 2,594 hours, and $80K+ earned across enterprise clients including Glassdoor and HungerRush. Every completed contract closed at 5 stars.
What I Do:
Healthcare & Revenue Cycle Systems:
Custom medical billing platforms — encounter intake, charge capture, claims generation and submission
Claims scrubbing, denial management, denial-prevention logic, and appeals workflows
ERA/EOB processing, payment posting, reconciliation, and AR follow-up
Clearinghouse and payer integrations, X12 EDI (837/835), eligibility verification
Revenue cycle dashboards, collections reporting, and practice-level analytics
EHR/EMR integration and migration off legacy or spreadsheet-based systems
HIPAA-aligned architecture: access controls, audit trails, encryption, minimum-necessary data handling
Full-Stack SaaS & Platform Development:
React, Next.js, TypeScript, Node.js, Python, Ruby on Rails
SaaS platforms, admin panels, internal tools, customer portals, and operational dashboards
Authentication, roles and permissions, billing, onboarding, and notifications
Multi-step workflows, approval flows, background jobs, and API-driven systems
PostgreSQL, Supabase, MySQL, Elasticsearch, and cloud deployments
API Integrations & Backend Systems:
REST APIs, GraphQL, webhooks, third-party and payer integrations
Stripe, Twilio, CRMs, email platforms, and internal systems
Backend architecture, database design, and production reliability
AWS, Docker, CI/CD, Vercel, and deployment workflows
AI & Automation:
AI-assisted claims review, document extraction, and coding support workflows
LLM integration using OpenAI and Claude with structured outputs
Human-in-the-loop systems where accuracy and auditability matter
Workflow automation with n8n, Zapier, Make, and custom logic
Reporting automation and operational tooling
Relevant Work:
Holistic Business Solutions: Sole architect and engineer of a complete custom medical billing platform for a US healthcare company. Encounter intake, claims processing, reconciliation, reporting, and revenue cycle visibility. Live and expanding for over a year.
Glassdoor: Internal tools and workflow systems supporting business operations, reporting, and data-heavy processes.
Modlr / Closr: AI-powered SaaS products using Claude, Stripe, Supabase, custom authentication, and user-facing AI workflows.
Thena.ai: Automation workflows, dashboards, and integrations across support systems and CRMs, focused on data sync and event handling.
HungerRush: Backend APIs and system reliability for a large-scale platform with real users and operational load.
StudioGrowth: Booking, payments, and workflow systems for a SaaS product used by real businesses.
Compliance Easy: Architecture and scalability work on a compliance-focused SaaS platform.
How I Work:
Healthcare software fails differently than other software. A broken workflow doesn't just annoy a user — it delays a claim, triggers a denial, and costs real revenue. I build for that: clear data flow, explicit failure handling, audit trails, and systems your billing team can actually operate without an engineer standing by.
My usual process:
Understand the actual billing or operational workflow, including the exceptions
Identify what should be automated and what must stay human-reviewed
Design the data model, integrations, and failure cases before writing code
Build the first reliable version and test against real scenarios
Document the system so it can be maintained and extended
I'm a good fit if you need someone who can:
Build or replace a medical billing or RCM platform
Reduce claim denials through better software and cleaner submission logic
Integrate with clearinghouses, payers, or an existing EHR
Migrate off spreadsheets and manual process onto a real system
Build reporting and revenue cycle visibility you don't currently have
Improve or stabilize an existing healthcare SaaS product
Design backend architecture that holds up under production load
I work with US clients across all time zones and communicate in clear, direct English. If you need a senior engineer who understands both the technical build and the billing workflow underneath it, I can help you design and build it properly.
Steps for completing your project
After purchasing the project, send requirements so Hassan can start the project.
Delivery time starts when Hassan receives requirements from you.
Hassan works on your project following the steps below.
Revisions may occur after the delivery date.
First step
Client purchases the project and sends requirements.
Second Step
Deliver all the requirements as per prior alignments.