# Mas Syahdan Filsafan — Full CV
> Full Stack Developer | Technical Lead | Data & AI Engineer
>
> Jakarta, Indonesia
>
> syahdanfilsafan58@gmail.com | +62 899 893 7095
>
> linkedin.com/in/mas-syahdan-filsafan | github.com/Cloud-Dark | apipedia.id

## PROFESSIONAL SUMMARY

Experienced Full Stack Developer and Technical Lead with a Master's degree in Informatics Engineering from ITS and 8+ years of industry expertise spanning web development, data engineering, system architecture, and artificial intelligence. Currently driving AI transformation as a Technical Lead at PT Transcosmos Indonesia — architecting hybrid on-premise and cloud AI solutions, developing proprietary RAG systems, and leading organization-wide AI adoption through training, seminars, and workshops. Certified Program Analyst and Intermediate IT Auditor with a proven track record of delivering scalable enterprise solutions and emerging technology innovation.

## PROFESSIONAL EXPERIENCE

### PT Transcosmos Indonesia — IT Solution/Corporation
**Technical Lead - AI Solutions** | May 2026 - Present | Jakarta, Indonesia

- Expanded AI implementation scope beyond internal systems, architecting hybrid AI solutions that strategically combine on-premise local models with cloud-based AI services to optimize cost efficiency while maximizing performance and scalability
- Optimized embedding strategies and RAG pipelines by evaluating and integrating multiple embedding models, fine-tuning retrieval parameters, and implementing advanced chunking techniques to enhance response accuracy and contextual relevance
- Pioneered AI-generated video content initiatives, integrating generative video models into the production workflow for corporate multimedia needs, including training materials and promotional content
- Led organization-wide AI transformation programs including internal training, seminars, webinars, and hands-on workshops to drive AI adoption across departments and elevate technical competency organization-wide
- Architected a cost-aware hybrid AI infrastructure strategy, leveraging local inference for latency-sensitive and high-frequency tasks while utilizing cloud AI for burst and complex workloads, resulting in significant operational cost reduction without compromising output quality

**AI Engineer & AITI Development Specialist** | January 2025 - May 2026 | Jakarta, Indonesia

- Pioneered On-Premise AI Infrastructure: Led the end-to-end design and development of AITI (Artificial Intelligence Transcosmos Indonesia), a proprietary knowledge-based AI Retrieval-Augmented Generation (RAG) system built exclusively for on-premise deployment, ensuring full data sovereignty and security compliance
- Developed and implemented a novel 7-Method Hybrid Search Engine that strategically combines Vector Embeddings (Ollama) with six traditional/lexical search methods (BM25, Jaro-Winkler, Levenshtein, etc.), proven to handle typos and complex semantic queries with significantly improved retrieval accuracy and system recall
- Architected the complete data training pipeline including text tokenization, vocabulary building, and 1024-dimensional vector embedding generation, establishing a robust AI development workflow from raw data to production-ready model inference
- Conducted internal AI training sessions, seminars, and workshops to upskill engineering teams in machine learning, RAG architectures, and prompt engineering, fostering organizational AI literacy and adoption
- Focused exclusively on on-premise (local) AI deployment strategies to maximize data security while delivering enterprise-grade AI capabilities

**Full Stack System & Development Technical Lead** | March 2023 - January 2025 | Jakarta, Indonesia

- Led the full-stack development team in designing, building, and maintaining enterprise-grade web applications using React, TypeScript, Node.js, and cloud infrastructure, ensuring alignment with corporate IT strategy
- Architected scalable system solutions for internal corporate applications, establishing development standards, code review practices, and CI/CD pipelines to improve team velocity and code quality
- Collaborated with cross-functional business units to translate operational requirements into technical deliverables, bridging the gap between business objectives and technology execution
- Managed end-to-end software development lifecycles, from requirement analysis and system design to deployment, monitoring, and continuous improvement

### API Pedia
**Founder & Technical Lead** | January 2022 - Present | Surabaya, Indonesia

- Founded API Pedia as an API gateway platform built to serve real-world business needs, growing it from a single-product service into a comprehensive multi-solution communication platform
- Launched the company's flagship WhatsApp Gateway, initially targeting B2C use cases to enable direct, reliable customer engagement for API Pedia's own customers
- Led the strategic pivot from B2C to B2B, repositioning the platform to serve enterprise-grade integration requirements and power clients' internal business applications
- Onboarded and supported major enterprise clients including BIGO, PLN, TikTok, and BCA, among many other large organizations, delivering messaging and communication infrastructure for their internal systems
- Expanded the product portfolio beyond the core WhatsApp Gateway to include Telegram Gateway, SMS Gateway, OTP solutions, server and deployment engine services, and AI-powered solutions
- Architected the platform on a Node.js and React technology stack, containerized with Docker and automated through GitHub-based CI/CD pipelines for scalable, reliable delivery

### PT EIKON Technology
**Data Engineer & GCP Platform Specialist** | June 2022 - March 2023 | Jakarta, Indonesia

- Relocated to Jakarta to deepen Google Cloud Platform expertise, focusing on BigQuery for enterprise data lake architecture, enabling scalable analytics across multi-terabyte datasets
- Designed and implemented data partitioning and clustering strategies in BigQuery, achieving sub-second query performance on tables exceeding 32 million rows through optimized schema design and materialized views
- Developed end-to-end data pipelines integrating Cloud Storage, Pub/Sub, Dataflow, and BigQuery to support real-time and batch data processing for enterprise clients
- Leveraged Vertex AI for machine learning model deployment and Looker Studio for interactive business intelligence dashboards, delivering data-driven insights to stakeholders
- Conducted comprehensive data optimization initiatives including query performance tuning, cost analysis, and data lifecycle management to maximize GCP resource efficiency

**Full Stack Developer - Google Cloud Solutions** | January 2022 - June 2022 | Surabaya, Indonesia

- Transitioned into full-stack development using Google Cloud Platform, architecting and building cloud-native applications with Cloud Functions, Firestore, and Cloud SQL as the core technology stack
- Developed scalable backend services and RESTful APIs using Node.js integrated with Google Cloud services, serving both internal operational needs and external client applications
- Provided enterprise-level training and consulting services, guiding clients through cloud application design, implementation best practices, and migration strategies
- Collaborated with cross-functional teams to translate business requirements into technical solutions, ensuring seamless integration between frontend interfaces and cloud backend services

**AppSheet Researcher & Application Specialist** | January 2021 - December 2021 | Surabaya, Indonesia

- Specialized as an AppSheet researcher and developer, mastering no-code application development including advanced configurations, workflow automation, and data model design
- Led AppSheet project implementation for AHM (Astra Honda Motor), a national-scale enterprise, delivering customized mobile applications for operational management and field data collection
- Engineered seamless integration between AppSheet applications and external systems through API gateways and custom connectors, enabling bi-directional data synchronization with enterprise databases
- Optimized AppSheet application UI/UX to deliver intuitive, responsive mobile interfaces that improved end-user adoption and operational efficiency across client organizations
- Developed and maintained internal office applications using AppSheet, streamlining administrative workflows and digitizing manual processes for improved organizational productivity

### Lokania (Start-up)
**Co-Founder & Technical Lead** | January 2021 - February 2022 | Surabaya, Indonesia

- Led end-to-end product development from concept to deployment, initiating in-depth discussions on application design, user flow architecture, and business process modeling to define a clear product vision and technical roadmap
- Architected and developed the comprehensive application blueprint, translating business requirements into scalable system design, database schemas, and API specifications before deploying the full stack onto Google Cloud Platform
- Integrated Google Maps API to power location-based services, enabling real-time discovery and navigation to nearby hotels with precise geolocation data and optimized routing
- Implemented TriPay payment gateway to handle secure transaction processing, supporting multiple payment methods with robust error handling, receipt generation, and transaction logging
- Leveraged Google Cloud SQL as the primary relational database, optimizing query performance and ensuring high availability with automated backups and failover mechanisms
- Architected and deployed a Redis caching layer to significantly reduce database load and API response times, optimizing resource utilization and delivering a seamless user experience even under concurrent access patterns
- Served as Technical Lead managing a team of 4 developers, overseeing task delegation, code reviews, sprint planning, and mentoring junior team members while actively contributing as the lead full-stack developer driving technical initiatives

### PT Delta Sinergi Prima
**Full Stack Developer & IT Consultant** | October 2018 - December 2020 | Surabaya, Indonesia

- Started as an intern and advanced to full-stack developer, building internal corporate applications using PHP with the Yii2 Framework (an MVC architecture similar to CodeIgniter) and MySQL for robust relational data management
- Developed a comprehensive attendance system featuring facial photo capture and GPS geolocation detection, automatically recording precise addresses and latitude-longitude coordinates at each check-in to ensure attendance accuracy and prevent proxy attendance
- Engineered complete attendance management workflows including clock-in/clock-out with photo validation, absence submission with reason categorization, and automated reporting dashboards for HR and management review
- Created corporate visual assets and motion graphics using Adobe Illustrator for static designs and After Effects for animation production, delivering professional multimedia content for company branding and presentations
- Provided IT consulting services for ISO 27001 Information Security Management System implementation across multiple government institutions including Kominfo Sidoarjo, Kominfo Surabaya, and Kominfo Yogyakarta, conducting gap analysis, documentation, and control implementation
- Supported the Food Security and Extension Agency (Badan Ketahanan Pangan dan Penyuluhan) of Yogyakarta with IT infrastructure development, system deployment, and technical maintenance to enhance their digital operational capabilities

## EDUCATION

### Institut Teknologi Sepuluh Nopember (ITS)
Master of Informatics Engineering | September 2022 - September 2024 | Surabaya, Indonesia

- Developed advanced AI Neural Network model using multi-layer perceptron architecture achieving exceptional 99% accuracy in predictive analytics and machine learning applications
- Published 5 research papers in prestigious IEEE conferences with focus on machine learning, deep learning, and data engineering
- Successfully completed comprehensive 2-year program spanning 4 semesters with research emphasis on artificial intelligence and computational sciences

### Universitas Nahdlatul Ulama Surabaya
Bachelor of Information Systems | September 2016 - September 2020 | Surabaya, Indonesia
Grade: 3.51

Activities and Societies:
- Founder & Pioneer — UKM Cyber UNUSA
- Documentation & Media Team — Himpunan Mahasiswa Sistem Informasi UNUSA
- Technology Research Team — BEM Faculty of Information Systems Engineering (UNUSA in Hand initiative with Indosat)
- Technical Contributor — UNUSA in Hand (with Indosat)

## PUBLICATIONS (IEEE)
1. "Predicting Sugar Import Quantity Using Multi-Layer Perceptron Regressor Method" — ICICoS 2024
2. "Ensemble Imputation Method for Forecasting Indonesia Sugar Dataset Using Machine Learning" — ICONNIC 2023 (Cited by 1)
3. "Indonesia White Sugar Supply and Demand Forecast Using Machine Learning" — ICONNIC 2023
4. "Ransomware Transaction Detection on the Blockchain with the TabNet Model" — ICAMIMIA 2023 (Cited by 1)
5. "A Comparative Study On Image Compression in Cloud Computing" — EECSI 2023

## TECHNICAL SKILLS

**Frontend Development:** React.js, Next.js, JavaScript (ES6+), HTML5, CSS3, Tailwind CSS
**Backend Development:** Node.js, PHP, Laravel, CodeIgniter, Yii2, Python, Golang
**Database & Cloud:** MySQL, PostgreSQL, MongoDB, Firebase, Google Cloud Platform, Redis
**AI/ML & LLMs:** Large Language Models (LLM), RAG (Retrieval-Augmented Generation), TensorFlow, Ollama, Machine Learning, Neural Networks, Natural Language Processing
**Data Engineering & Analytics:** BigQuery, Vertex AI, Looker Studio, Cloud Storage, Dataflow, Pub/Sub, Retrieval Systems
**DevOps & Tools:** Docker, Git, REST APIs, AppSheet, CI/CD
**Design & Creative:** Canva, PowerPoint, Paint
**Documentation:** Swagger, Markdown, Google Docs, Microsoft Word, Postman
**Soft Skills:** Team Leadership, Public Speaking, Project Management, Technical Writing

## CERTIFICATIONS & ACHIEVEMENTS

**Professional Certifications:**
- Program Analyst Certification — BNSP (Badan Nasional Sertifikasi Profesi)
- Intermediate IT Auditor Certification — BNSP (Badan Nasional Sertifikasi Profesi)
- Database Design and Programming — Digital Talent Scholarship Kominfo
- Foundations: Data, Data, Everywhere — Google (Coursera)
- TOEFL Score: 530 — ETS
- AR Core Development Training — PENS (Politeknik Elektronika Negeri Surabaya)

**Key Achievements:**
- Winner — Creative Design and PowerPoint Presentation Competition (UKM Cyber UNUSA)
- Surat Pencatatan Ciptaan — Aplikasi Delta Training (Intellectual Property Registration)
- Published Research Papers on Machine Learning and Data Engineering
- Founder of UKM Cyber UNUSA (IT Student Organization)

## PROFESSIONAL ORGANIZATIONS

- Grotch Circle — Member (2026 - Present)
- Build Club Indonesia — Member (2026 - Present)
- Google Developer Club — Member (2025 - Present)
- AI Builders — Member (2024 - Present)
- Surabaya Black Hat — Member (2016 - 2023) | Surabaya
- Surabaya Hacker Link — Member (2016 - 2023) | Surabaya
- UKM Cyber UNUSA — Founder (2019 - 2020) | Surabaya
- UKM Teater Tower UNUSA — Media & Music Production Team (2017 - 2020) | Surabaya
- BEM Faculty of Information Systems Engineering — Media & Communication Staff (2018 - 2019) | Surabaya
- HIMA Information Systems — Technology Research Staff (2016 - 2017) | Surabaya