Freelance projects: 20, 30, or 40 hours per week

Hey, I am Abiali Doctor.
From interface to API, I build web applications.

Full-stack engineer and team lead with 6+ years of experience building backend systems, applied AI products, and dependable web applications.

Abiali Doctor
Currently brewing SDE III & Team Lead at Propelius Technologies
Node.jsPythonTypeScriptNext.jsPostgreSQLLangGraphRAGAWS

Selected projects

All projects →
Dec 2024 — PresentSDE III & Team Lead · Propelius Technologies
Sep 2023 — Around Dec 2024Full-Stack Developer · Wedfield (formerly Wedcell)
May 2023 — Aug 2023Junior Frontend Developer · Avantica Innovations
Aug 2022 — Apr 2023Junior Full-Stack Developer · Globalia Soft
Jul 2020 — Jul 2022Intern & Junior Frontend Developer · Lucky IT Services

What people say

Alex

Alex

SBBids client

“Abiali was very flexible with his schedule to help me during US hours. He went above and beyond with understanding requirements and implementing best practices. He took ownership in the work as much as if the app was his own. He is a perfect hire for any team large or small.”
Orr

Orr

Ibrani.AI client

“His contributions were instrumental in establishing the foundation of our application, and I can confidently recommend him for any full-stack development project.”
Read full testimonial
Outstanding Full-Stack Developer - Highly Recommend! I had the pleasure of working with Abiali during the critical early stages of our Hebrew language assessment platform (Ibrani). His contributions were instrumental in establishing the foundation of our application, and I can confidently recommend him for any full-stack development project. Key Accomplishments: 🔧 Core Architecture & Logic (July 2025) - Implemented sophisticated weighted scoring aggregation system for our AI-powered Hebrew language assessment, handling 7 evaluation parameters with configurable weights - Developed comprehensive CEFR level mapping logic that converts raw scores to standardized language proficiency levels (A1-C2) - Built complex lookup table system for evaluation data, including critical bug fixes that improved system accuracy 📱 User Interface & Features - Created unique test code generation system with Redux state management for secure student assessment tracking - Designed and implemented custom footer component and language toggle functionality - Removed CEFR mentions from user-facing content while maintaining technical accuracy in backend calculations - Enhanced evaluation results display with visual parameter indicators for better user experience 📚 Documentation & Developer Experience - Authored comprehensive environment variable configuration guide (env-info.md) with 137 lines of detailed documentation - Updated .example.env with clear, well-organized environment variable structure (78 lines) - Significantly improved onboarding process for future developers 💾 Database & Backend - Created and executed Supabase migrations for session management schema updates - Implemented type-safe database interactions using TypeScript - Refactored core GPT-4 evaluation logic (5GptCals.ts) multiple times to improve code quality and maintainability Technical Skills Demonstrated: - Frontend: React, Next.js, TypeScript, Redux Toolkit, i18n (Arabic, English, Hebrew) - Backend: Node.js, API integration, database migrations - Database: Supabase/PostgreSQL, schema design - AI Integration: GPT-4 API, Whisper transcription service - Code Quality: Zod schema validation, type safety, clean architecture Work Metrics: - Total Contributions: 6 major commits over ~10 days - Lines Changed: ~1,500+ lines added/modified - Files Touched: 38 files across frontend, backend, database, and documentation - Impact: Established core evaluation engine still used in production today Work Style: Abiali demonstrated excellent problem-solving skills, particularly evident in his iterative approach to fixing the lookup table bugs and refactoring the GPT evaluation logic. He worked independently, maintained clean commit history, and delivered production-ready code with proper error handling. Bottom Line: Abiali is a talented full-stack developer who can handle complex technical challenges involving AI integration, multilingual applications, and sophisticated business logic. He left our codebase in excellent condition with proper documentation. I would absolutely hire him again for future projects. Recommended for: Full-stack development, AI/ML integration, database architecture, technical documentation, React/Next.js projects.
Meet M.

Meet M.

Team Lead · Globalia Soft LLP

“Abiali D has my highest recommendation because of their technical expertise, commitment, and teamwork-oriented attitude. Looking forward to further partnerships in the future.”
Read full testimonial
It gives me great pleasure to convey how happy I am with Abiali D, the MERN stack developer I recently recruited. His deep understanding of Node.js, Express.js, React, and MongoDB was demonstrated by the project's flawless development. Abiali D showed how to solve problems proactively, coming up with creative fixes for problems and improving functioning all around. They were very professional and punctual, and their communication was clear and effective, which kept me updated. Abiali D has my highest recommendation because of their technical expertise, commitment, and teamwork-oriented attitude. Looking forward to further partnerships in the future. We appreciate you making our idea a reality!
The 3D coffee & code café: the owner coding at the counterLive 3D
The 3D version

Step into the café

The same portfolio as a little 3D coffee shop. Click the menu board for skills, the bookshelf for projects, or say hi to the barista.

Walk in →

Have a project in mind? Let’s talk over a coffee.

Start a conversation →