I build reliable backend systems and data-driven applications with a strong focus on data accuracy, operational integrity, and SLA-driven environments.
With 6 years of experience handling business-critical data in the Travel Tech industry and a background in Information Systems, I specialize in turning complex operational requirements into clean, maintainable backend solutions.

• Career Transition (Structured & Proven):
  I transitioned from a Data Operations / Data Analyst role into a Backend Developer (Data-Oriented) through structured training, real-world projects, and formal competency assessments.

• Backend-Focused Engineering:
  My primary focus is server-side development, relational databases, API design, and backend logic that ensures data integrity and system reliability.

• Hands-on Industry Training:
  Currently progressing through the AI Back-End Developer Program (IDCamp 2025), strengthening backend fundamentals with JavaScript and cloud-ready application concepts.

• Formally Assessed Competency:
  Passed the National Web Development Competency Test (BNSP), validating my ability to build industry-standard backend web applications.

• Strong Domain Foundation:
  6+ years working with fare, pricing, and contract data in Travelport (Galileo GDS), where precision and zero-error tolerance are mandatory.

⚠️ Frontend is used to support backend workflows, not as the main specialization.

Backend & Web Application Project (On-the-Job Training)

• Problem:
  Manual product catalog management and employee attendance tracking caused data inconsistency and operational inefficiencies.

• Solution:
  Developed an integrated digital platform using Laravel (PHP) and MySQL to manage:

  • Frozen food & grocery product catalog (E-Catalog)
  • Web-based employee attendance system

• Backend & Data Focus:

  • Designed relational database schemas to ensure data integrity
  • Implemented backend CRUD logic, validation, and role-based access control
  • Ensured consistency across operational data used daily by the business

• Tech Stack:
  Laravel, MySQL, Tailwind CSS, Alpine.js

🔗 View Repository

ATI Business Group – Client: Travelport
6 Years

• Managed and maintained airline fare and pricing data within production reservation systems.
• Processed high-volume data requests while ensuring accuracy, consistency, and compliance.
• Performed data validation and error resolution to prevent pricing and revenue discrepancies.
• Worked under strict SLA and audit requirements in a global operational environment.

This role built my strong foundation in data accuracy, operational discipline, and production systems—now applied directly to backend development.

1. Operational Reliability Mindset
   Years of working with revenue-impact data shaped a backend approach that prioritizes correctness over shortcuts.

2. Data-Oriented Backend Design
   I treat databases as first-class citizens—schemas, constraints, and validation matter.

3. Clear Communication & Documentation
   Comfortable collaborating with technical and non-technical stakeholders in structured environments.

Bachelor of Information Systems - Bina Nusantara University
Focus: Database Systems, Business Process Analysis, and System Design

• LinkedIn: linkedin.com/in/tommyoktoriyan
• Location: West Java, Indonesia 🇮🇩

"Building backend systems where data accuracy and reliability come first."