Hi, I’m Sulfikar.Full-stack developer.
Software engineer with 15+ years of experience in architecting and coding interactive full stack applications. Specializing in machine learning, LLMs, and AI-powered solutions.
Everything you need
A comprehensive suite of tools for developers, students, and curious minds — fast, browser-only, free.
JSON formatter, hash functions, regex tester, base conversion, Base64, timestamps.
Explore →World clock, timezone conversion, date difference, and Julian day calculations.
Explore →Planetary hours, sunrise and sunset times, moon phases for any location.
Explore →Length, mass, temperature, and data size conversions — all bidirectional.
Explore →35+ Q&A plus interactive code playground with AI feedback.
Explore →Spiritual Treatment
العلاج الروحاني
Alongside engineering, I treat people using sacred knowledge passed down through generations — through family and teachers. This is not motivational speaking or generic prayer — it is exact, traditional treatment, offered freely to anyone, anywhere.
Hereditary sacred knowledge
The knowledge I practice was not learned from books alone — it was passed to me through an unbroken chain of family and teachers, with its conditions and discipline.
Exact by design
Every calculation behind a treatment is computed by a verified digital engine — never by hand — so the errors that creep into handwritten work cannot happen here.
Free, performed personally
I perform the treatment myself, on your behalf, as a social service. No charges — ever.
From data science to full-stack web development
Machine learning
Building and deploying ML models for real-world applications.
LLMs & NLP
Working with large language models and natural language processing.
Python development
Data science, automation, and backend development with Python.
Java Spring Boot
Enterprise-grade backend applications with Spring Boot.
React & Next.js
Building modern, responsive frontend applications.
Full-stack architecture
End-to-end application design and implementation.
“This website is my own work end to end. Explore it — it is the portfolio.”
Excel file processing library
A powerful and easy-to-use Java library for Excel file manipulation using Apache POI.
This website
Built end to end by me: Next.js 15 App Router with an integrated AI assistant, an interactive interview code playground, and a suite of precision calculation tools.
Have a project, a role, or a question?
Write to me directly — I read and answer everything myself.