HELLO, I'M
ARISARA
RUTTAKAN
Technical BA & Full-Stack Developer
I believe great software starts with understanding the right problem. I bridge business needs and technical solutions — turning complex requirements into systems that create real value.
About Me
With 7 years in software development across manufacturing ERP, travel, real estate, and LMS, I've learned that the hardest part of any project isn't writing the code — it's understanding what actually needs to be built and why.
That realization pushed me toward business analysis. I now work as a Technical BA, gathering requirements, writing BRD and SRS, and designing system flows — while still loving the technical side enough to build and architect things myself.
Business Analysis & System Design
Experienced in requirement gathering, writing BRD and SRS, designing system flows, and translating business needs into technical solutions.
Backend & Database Design
Experienced in backend development, database design, and business logic implementation across multiple business domains.
Modern Web Stack
Working with React, Next.js, Node.js, and PostgreSQL, backed by 7 years of backend.
AI Integration
Explored AI-powered features using Google AI Studio with Node.js and PostgreSQL integration.
Technical Skills
A comprehensive list of the technologies and tools I use to bring ideas to life.
Technical BA
Frontend
Backend
Database & AI
Tools & DevOps
Featured Projects
A selection of my recent work, spanning business analysis and full-stack development.
Technical BAIntegrated ERP System
Manufacturing Industry (Confidential)
A manufacturing company producing lead alloys was managing all production planning and inventory through Excel — leading to frequent data errors and inability to optimize raw material usage for maximum production value.
Tour Management System
Large-scale back-office system for tour product management, booking and passenger data.
Learning Management System
Custom LMS features including career path system, government API integration (DPIS) and performance tracking reports.
Professional Experience
Technical BA (Freelance)
Manufacturing Industry Client
Lead requirement gathering and discovery sessions for an Integrated ERP system in the manufacturing industry.
Document comprehensive BRD covering 35+ features across 5 core modules.
Develop detailed SRS, incorporating user stories and strict acceptance criteria.
Design system architecture diagrams, sitemaps, and overview flows using MermaidJS.
Full-Stack Developer
Personal Projects
Built a full-stack Hotel Booking application with hotel search, reservation workflow, and user authentication
Developed an AI-powered Manual Assistant featuring Q&A, authentication, and activity tracking
Designed and developed a responsive portfolio website with modern UI and animations
Managed deployment and hosting of applications in production environments
Software Developer
SoftSq
Developed and maintained large-scale Tour Management System used for travel business operations
Built and enhanced real estate web applications for property management and sales workflows
Customized Learning Management Systems (LMS) for enterprise and government clients
Developed automation solutions for data import and web scraping processes
Designed database structures and business logic for multiple business systems
Analyzed requirements and proposed technical solutions aligned with business needs
Collaborated with cross-functional teams to plan, assign, and deliver software projects
Performed testing, troubleshooting, and production support activities
Worked with CI/CD pipelines and Agile/Scrum development processes
Programmer
Quark System
Developed desktop business applications using C#/.NET technologies
Designed database structures and optimized system performance
My Education
Bachelor of Business Administration
Graduated 2017Business Computer
University of Huachiew Chalermprakiet University
Ready to build something
extraordinary together?
I'm currently looking for new opportunities and collaborations. Whether you have a question or just want to say hi, my inbox is always open!
Available for freelance & full-time positions