Curriculum vitae
Resume
Experience
AI Engineer (Research)
Jan 2025 - presentStealth AI Startup · Kuala Lumpur, Malaysia
- Fine-tuned cross-domain Speech & Text models with LLM-RAG integration for Voice Assistants, substantially reducing error rates against open-source baselines for APAC and MENA languages
- Engineered and deployed high-throughput, low-latency audio pipeline modules (Transcription, LID, VAD, Emotion Detection, Audio Spectrogram Transformers), optimizing inference for scalable production Voice Agent frameworks
- Overhauled Active Learning pipelines using LLM-assisted auto-labeling and human-in-the-loop verification, scaling up dataset coverage and annotation accuracy
- Built end-to-end data and training automation loops, leveraging DVC and GitHub Actions for event-triggered CI/CD orchestration and rapid, reproducible ML experimentation
Data Scientist
Sep 2024 - Dec 2024Stealth Startup · Remote
- Detected and tackled fraudulent activity, reducing customer complaints and averting recurring monthly losses
- Reviewed fraud networks from past cases using Graph DS and historical activity, including churn on complaints
- Explored LLM and agentic workflows for internal fraud-detection tooling
- Built data-driven alerting for risk prevention and mitigation (in-app loopholes, catastrophic alerting)
Algorithm/AI Engineer
Feb 2024 - Jul 2024TikTok · Jakarta, Indonesia
- Harmonized cross-platform search algorithms and system architectures between Tokopedia and TikTok Shop post-acquisition, fine-tuning retrieval models with local marketplace nuances to lift search relevance
- Spearheaded core phases of TikTok's end-to-end ML lifecycle, designing and scaling pipelines for data streaming, automated model training, search indexing, and high-dimensional Vector DB infrastructure
Data Scientist
Sep 2021 - Jul 2024Tokopedia · Jakarta, Indonesia
- Architected Query Understanding algorithms for Search Personalization, lifting search relevance, conversion, gross transaction value, and monthly ads revenue
- Engineered a multi-label Query-to-Product Type assortment system for IR pre-filtering, driving gains in conversions, transaction value, and monthly ads revenue
- Scaled deep learning and LLM solutions in production (real-time classifiers, LLM automated labelers), leveraging model distillation and quantization to cut latency and compute cost while holding baseline accuracy
Data Scientist
Nov 2020 - Sep 2021Pashouses · Jakarta, Indonesia
- Engineered a multi-modal Automated Valuation Model (AVM) for regional housing prices using tabular, text, and image data, keeping the error rate low while greatly accelerating processing throughput
- Designed end-to-end data engineering and ETL pipelines for property analytics, cutting manual data ingestion effort while keeping the system reliable
Education
Bachelor of Mathematics
2016-2020Bandung Institute of Technology (ITB)
- Thesis: Computational Fluid Dynamics for Wave Propagation using the Shallow Water Equation
- Focus area in Applied Mathematics (Optimization, PDE, Financial Mathematics)
- Core math coursework: Linear Algebra, Real & Complex Analysis, Multivariable Calculus
- Intermediate statistics: Probability Theory, Mathematical Statistics
- Activities: International Mathematical Modeling Competition (fish population dynamics); Quantitative Finance portfolio-construction challenge
Projects
Kept on the Repositories page, refreshed straight from GitHub.
Papers & Awards
Listed on the Papers & Awards page.
Academic interests
Bringing modern NLP to Indonesian & its local languages
- LLMs underperform on low-resource languages due to scarce data
- Many Indonesian local-language resources remain untapped by modern NLP
- Contributing to projects (with talented collaborators across Indonesia) that address this gap
Expanding generic NLP toolkits
- Widely-used NLP toolkits often lack Indonesian and local-language support
- Aiming to help democratize tooling and knowledge across languages
Low-resource NLP research
- Several Indonesian local languages are syntactically transferable from Indonesian without major semantic degradation
- Dedicated to bridging NLP into low-resource languages via this approach
- Aspiring to pursue a higher degree in an environment that enables driving this vision
Other interests
- Cracking math problems; I still enjoy the challenge of proving or disproving a statement
- Writing tidy, self-explainable code (self-taught, coming from a non-CS background)
- Truly end-to-end deployments built by hand (with a little help from Stack Overflow / ChatGPT)
- Finding the beauty of mathematics as a "language" for the real world, whether in DS, ML & AI, or the social sciences