I help startups and businesses build scalable SaaS and web applications using React.js, Next.js, Node.js, Python, JavaScript, and TypeScript. I also develop AI-powered solutions with RAG, OpenAI, Claude, Gemini, vector databases, AI chatbots, document processing, and semantic search.
8+ Years
Experience
100% JSS
Job Success Score
$200K+
Earned on Upwork
Top Rated Plus
Upwork Badge
People say
"Exceptional excellent freelancer!"
Tal Barmeir
CEO, BlinqIO
My process
01Fast Response & Daily Calls
Quick response times to keep projects moving — I join daily meetings via video call to stay fully in sync.
02Daily Progress Updates
Daily GitHub commits and short video demos so you always see real progress, never just promises.
03Weekend Availability
Available on weekends when needed for urgent issues, critical bugs, or tight launch deadlines.
04Your Time Zone
Comfortable working in your preferred time zone — no delays waiting for cross-timezone replies.
05Long-Term Partnership
I stay past the contract. Long-term support, new features, and ongoing collaboration as your product grows.
06Zero Surprise Communication
Clear, honest updates with no hidden delays. If something's blocked, you hear about it immediately.
"I don't just write code — I build products that generate revenue, retain users, and scale."
Client fit
Legacy Codebase Rescue
Existing code has become hard to manage, slowing development, bug fixes, and new feature delivery.
Full-Stack from Scratch
Building products from scratch with high standards across frontend, backend, database, and architecture.
React / Next.js Migration
Migrating web apps from legacy technologies to modern React.js and Next.js stacks.
How I help
Full-Stack SaaS Development
Build MVPs, B2B SaaS platforms, and web applications from idea to production with modern architecture and clean code.
- ✓Frontend development with Next.js, React, and TypeScript
- ✓Backend development with Node.js, Python, Laravel, Supabase, PostgreSQL, MongoDB, and MySQL
- ✓Authentication, payments, subscriptions, and user management
- ✓Multi-tenant web applications with role-based access control and Supabase Row Level Security (RLS)
- ✓CMS, CRM, and third-party API integrations
"Every project I ship is production-ready — tested, optimised, and built to last."
Selected work
BlinqIO - AI powered test automation B2B SaaS
AI-powered test automation B2B SaaS that generates and maintains end-to-end Playwright tests. Served as Senior Lead Full-Stack Engineer across the web app, Electron desktop app, web recording tool, and admin panel — owning frontend architecture, backend APIs, and microservices.
Key Contributions
- Built multi-tenant architecture where all UI data dynamically updates based on the selected project context
- Built drag-and-drop folder management to organize tests folder-wise for structured navigation
- Reduced page load times by 30% through performance optimization and code-splitting
- Increased user engagement by 40% with improved user experience and analytics-driven enhancements
- Reduced production issues by 70% through better code quality and testing practices
- Improved development speed by 70% by streamlining workflows and engineering processes
Tech Stack
30%
Faster Load Times
40%
Higher User Engagement
70%
Fewer Production Issues
70%
Faster Development Velocity
MedNota — Healthcare Quality & Patient Safety Platform
Swiss healthcare technology platform helping hospitals track patient outcomes, monitor infections, and streamline regulatory reporting. Served as Senior Full-Stack Engineer owning complex clinical workflows — JSON schema–driven forms, BPMN patient flows, drag-and-drop builders, and data-rich dashboards.
Key Contributions
- Implemented role-based access control with distinct permissions for admins, clinicians, and staff
- Implemented dynamic JSON schema-driven forms, enabling new form configurations without any code changes
- Empowered hospital staff to manage and customize clinical forms independently, without developer involvement
- Enabled drag-and-drop patient workflow builder for admins to arrange and manage treatment completion stages
- Improved frontend performance significantly for large-scale patient datasets
- Reduced code complexity and increased maintainability across modules
- Enabled multi-language support for wider accessibility
- Delivered data-rich dashboards for better clinical decision-making
- Streamlined workflow automation using BPM integration
Tech Stack
Zero-Code
Form Management for Hospitals
Large-Scale
Patient Datasets Handled
Multi-Lang
Accessibility Enabled
BPM
Workflow Automation
Calen360 — Multi-Calendar & Booking Platform
Multi-calendar aggregation and booking platform combining unified calendar management with Calendly-style scheduling. Served as Senior Full-Stack Engineer delivering calendar views, booking flows, team assignment, and Stripe integration with real-time WebSocket sync.
Key Contributions
- Implemented role-based access control for admins, team members, and guests with scoped permissions
- Built unified multi-calendar view aggregating events from multiple sources into a single dashboard
- Implemented Calendly-style booking management — one-on-one, group, and round-robin bookings with shareable links, availability rules, and seamless scheduling flows
- Integrated Stripe for subscription billing and payment processing
- Collaborated on complex backend logic for timeslot calculation and conflict resolution
- Enabled real-time booking state sync using WebSockets
Tech Stack
Multi-Cal
Calendar Aggregation
2-Way Sync
Booking & Calendar Sync
Stripe
Payments Integrated
Real-Time
WebSocket Sync
Live in production
Real products shipped and running in production — click any card to visit the live site.
Full-stack web application — modern UI built with React & Next.js.
B2B AI-powered test automation platform generating end-to-end Playwright tests.
Complex SaaS Swiss healthcare platform for patient outcomes & regulatory reporting.
B2B platform unifying store operations, employees, and customers in one place.
Booking, calendar, and task management SaaS platform — Calendly-style scheduling.
AI-powered quantitative trading and investment platform in capital markets fintech.
B2B airport management platform for operations, compliance, and safety tracking.
Contributed to multiple products — Equature, PMS, and Vibewith.
Energy industry enterprise software platform — B2B SaaS for capital markets.
Education platforms for teachers and students — test creation and management.
Magento eCommerce development tools and extensions provider.
Collector-focused trading marketplace platform for authenticated transactions.
Toolbox
"If you can imagine it, I can build it — clean, fast, and ready to ship."