Focused on delivering functional, responsive UIs using modern frameworks like React and other libraries. While design isn’t my primary strength, I ensure user experience and core functionality are top-notch, balancing usability with performance.
Founder-Level Product Builder
Rizki
Febriansyah
Fullstack Engineer • AI Engineer • Technical Founder
Building Digital Products, Educational Ecosystems, and AI-Powered Experiences.
Founder of Radkai Studio.
Engineering products across AI, Fullstack Development, System Design, Cybersecurity Education, Productivity Tools, and Mobile Applications.
- 10 + Products Built
- 2K22 Stories by Google
Product Builder
About Me
my Impact & Vision
I am a product-focused engineer who enjoys transforming complex ideas into practical software experiences.
Over the years I have built enterprise banking systems, AI-powered automation services, educational platforms, productivity tools, and mobile applications.
My work combines software engineering, product thinking, user experience, and emerging AI technologies.
6+ Years
Of Engineering Experience
Multiple
Production Systems Built
About Me
Method of Development
how do I Manage the Things
Frontend and Designation
Backend and Logic
Scaling backends & secure solutions using modern framework.Focused on efficient data management, logic, and integrating real-time functionality to power seamless applications.
Optimization and Testing
I prioritize the output first but also the performance, optimizing everything from queries to code. I implement thorough testing (unit, integration, E2E) to ensure high-quality software, bug-free software that scales efficiently.
Documentation
I keep documentation concise and to the point. With best practices in place, I focus on minimal, relevant documentation, ensuring it's only as detailed as necessary for the development process.
Primary Language
Bahasa Indonesia is my native language. I communicate fluently in both Bahasa and English across all professional environments.
Language
Proficient in English (C2 Certified Level). Comfortable working with international teams, writing technical documentation, and communicating across global remote environments.
Skills
Featured Products
what I Build
Interactive Education
Visit Platform
ML Systems Universe
Interactive Machine Learning learning platform.
- Machine Learning
- AI Concepts
- Interactive Learning
- Practical Education
Developer Education
Visit Platform
Fullstack Universe
Developer-focused learning platform for modern web engineering.
- React
- Next.js
- Node.js
- APIs
- Databases
- Production Systems
Security Education
Visit Platform
Cybersecurity Universe
Interactive learning environment for security fundamentals.
- Linux
- Network Security
- Pentesting
- Malware Analysis
- Defensive Security
Architecture Education
Visit Platform
System Design Universe
Architecture-focused learning platform.
- Scalability
- Distributed Systems
- System Architecture
- Engineering Tradeoffs
Productivity
Visit Platform
Whiteboard
Collaborative visual thinking platform.
- Architecture Mapping
- Brainstorming
- Knowledge Extraction
- Product Planning
Deep Work
Visit Platform
Radio
Deep work audio environment.
- Focus
- Productivity
- Low Cognitive Load
- Continuous Learning
Mobile Application
Couple App
Production-ready mobile application designed for long-distance relationships.
Launching on Google Play.
- Mobile-first
- Meaningful digital interactions
- Production Ready
Products
Professional Highlights
my Experience
Experience
Full Stack Engineer
CFACTORY.CO
April 2025 - Present
Creating an engagement Digital Media with CFactory.
Data Annotator
Alignerr
March 2025 - April 2026
AI data annotation, RLHF workflows, and model evaluation.
AI Trainer
Labelbox
January 2025 - April 2026
AI training, prompt engineering, and LLM evaluation.
AI Coder
Outlier AI
December 2024 - April 2025
Training cutting-edge LLMs on coding tasks, software architecture, and logical reasoning.
Information Technology Staff
PT BPRS HIK Cibitung
September 2022 - November 2024
Fullstack Developer building enterprise banking systems (MIS, SIMDIGI, EFAS, EFOS). Migrated legacy MVC architecture to modern microservices. Managed cloud infrastructure from staging to production deployment.
Software Engineer
Amplication
May 2021 - December 2022
Developed with React, TypeScript, Node.js, Google Cloud, Serverless, and CI/CD across multiple platforms including React Native and REST APIs. Kanban workflow with ML EDA focus.
Information Technology Staff
Al-Halimiyah Islamic School
December 2020 - May 2021
Maintained website using WordPress CMS and PHPMyAdmin. Engaged in interactive events and presentation architecture support.
Multimedia Journalist
Institut Aikido Indonesia
August 2018 - January 2021
Sport journalist covering martial arts events under Institut Aikido Indonesia.
Experience
Founder Journey
building Radkai Studio
As the founder of Radkai Studio, I oversee the entire product lifecycle from conceptualization to production deployment.
- Product Strategy: Defining vision, roadmaps, and feature prioritization.
- Engineering: Leading fullstack development and system architecture design.
- Design Direction: Ensuring high-quality user experiences and cohesive interfaces.
- Cloud Infrastructure: Managing scalable deployments and DevOps pipelines.
- Growth: Conducting continuous experiments and iterative improvements.
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Founder
Tech Stack
my Tools
Frontend
Client-Side Engineering
- React
- Next.js
- TypeScript
- React Native
Backend
Server-Side Engineering
- Node.js
- Express
- Laravel
- FastAPI
AI
AI & LLM Integration
- OpenAI
- Gemini
- Claude
- Prompt Engineering
- OCR
- LLM Workflows
Infrastructure
Cloud & DevOps
- AWS
- Google Cloud
- Docker
- CI/CD
- Linux
Database
Data Storage
- PostgreSQL
- MySQL
- SQL Server
Stack
Recognition
my Credentials
Google Play Success Story
2022
Featured internationally on the Google Play Academy for app success strategies.
EF SET C2 Proficient
Certified C2 level proficiency in English language.
Harvard CS50x
Completed Harvard's Introduction to Computer Science.
IBM Deep Learning
Certified in Deep Learning implementations using IBM tools.
Meta Frontend & Backend Certifications
Certified in Meta's frontend and backend development programs.
Recognition
Introduction
watch My Video
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Video
Let's Build Something Meaningful.
Reach Out
Address
Bekasi, Indonesia
Open To
Remote Fullstack Engineer • AI Engineer • Founding Engineer • Product Engineer
Contact Me