CV
Nil Tianchen Mu
Summary
HPC Systems Administrator at Arizona State University accelerating research through system optimization, research software engineering, user collaboration, and community education.
Education
- Computer Science (Biomedical Informatics)2023Arizona State University
- Computer Science2022Arizona State University
- Biology2017Wuhan University
Work Experience
- HPC Systems Administrator2024-01 -Accelerate research computing through system optimization and research software engineering.
- Port bioinformatics LLMs and scientific software to Intel Gaudi2 accelerators and generate accompanying benchmark data.
- Develop benchmarking and post-maintenance testing software for heterogeneous HPC clusters.
- Tune workflow-management system performance and scheduling on Slurm-based HPC.
- Refactor genomic sequencing software to modern nf-core standards, contributing to the Earth BioGenome Project.
- Develop a large-scale Nextflow-based virus detection and discovery pipeline with the NASA OSDR Microbiome Analysis Working Group.
- Integrate the HPC account management system with the university registration database for automated account provisioning.
- Customize the Open OnDemand web portal to support scientific applications and agentic AI functionality.
- Manage HPC software stacks and databases; provide real-time troubleshooting for job, software, and hardware issues.
- Graduate Research Assistant2022-01 - 2023-12Machine-learning and genomics pipelines for microbiome classification and viral surveillance.
- Developed an explainable neural network pipeline for microbiome-based classification of COVID-19 patient samples (400 features), using a multilayer perceptron (mean AUC 0.75) with SHAP for feature importance analysis.
- Designed a DBSCAN-based clustering workflow to establish the true-positive threshold for KrakenUniq classification output.
- Contributed to an open-source Python package for model-agnostic feature reduction methods.
- Served on the Arizona Department of Health Services COVID-19 Sequencing Project team; built an ETL pipeline managing sequencing data for over one-third of the Arizona patient population.
- Built a generalizable genomic workflow that identified two novel bat coronaviruses from 250 raw samples on ASU supercomputing resources.
- Research Assistant2021-06 - 2022-01IoT sensing and real-time data dashboards for mobile weather stations.
- Connected twelve analog and digital environmental sensors to Arduino Uno and Raspberry Pi platforms to build IoT sensor enclosures for mobile weather stations.
- Built a real-time Adafruit data dashboard integrating MQTT, Google Drive, and SQLite for data logging and visualization.
- Research Assistant2020-09 - 2021-06Machine learning curriculum design and COVID-19 mobility modeling.
- Designed an undergraduate machine learning curriculum (MAT 400-level) that has been taught at ASU since Fall 2021.
- Processed 50,000 rows of U.S. population mobility data using the spectral clustering algorithm to model COVID-19 transmission patterns.
- Software Development and Testing Intern2020-05 - 2020-08Software and hardware testing for a self-driving robotic street sweeper.
- Designed and executed software and hardware tests for a self-driving robotic street sweeper, resolving issues identified during virtual and real-world road trials.
- Reviewed and managed testing data, providing feedback and recommendations to the R&D and Business teams.
- Led relocation of the full test set from Chandler to Chicago, including establishing a new test environment, producing new LiDAR maps, and training personnel for ongoing operations.
- Volunteer Research Assistant2019-09 - 2020-01NLP and machine learning for gene associations and protein-sequence analysis.
- Applied natural language processing and machine learning algorithms to find associations among genes across more than 1,700 biomedical papers, using Python and Excel.
- Extracted and cleaned protein sequences from over 3,500 records in the NCBI database, using Biopython, Pandas, and NumPy.
- Adapted multiple-sequence alignment, motif searching, and text-mining algorithms to cluster and identify universal features among antibody protein sequences.
- Research Assistant — ZooPhy Data Expansion Project2019-09 - 2019-12Climate-data integration for phylogeographic reconstruction of virus spread.
- Developed the Geoname Climate Data Integration System (GCIS) for ZooPhy, supporting the reconstruction of virus spread through phylogeography.
- Integrated NOAA GHCN temperature and precipitation data, cleaned and parsed into a PostgreSQL relational database, to enhance ZooPhy's epidemiological and phylogeographic capabilities.
- Built a command-line interface to manage the databases.
- Research Affiliate2018-09 - 2019-04Clinical field observation and decision-support research in biomedical informatics.
- Conducted field observations across Mayo Clinic ambulatory and ancillary care settings to analyze clinical-environment issues and observe provider–EHR interaction during migration to the Epic system, reporting findings in TOYOTA A3 problem-solving format.
- Proposed a Clinical Decision Support System (CDSS) based on Prescription Drug Monitoring Programs (PDMPs) for patient pain management; presented as a poster speaker at the 5th Annual Mayo Clinic–ASU BMI/BMD Student Poster and Employer Networking Event (April 2019).
- Completed a two-month intensive introduction to medical terminology, human anatomy, and physiology.
- Research Assistant2014-04 - 2018-01Cell biology and prion protein signaling research.
- Designed and conducted cell-biology and BSL-2 animal experiments, including the handling of infectious materials; co-authored a paper published in the Journal of Biological Chemistry (2017).
- Studied how GPI anchor system genes regulate the formation of PrP in AsPC-1 cells.
- Showed that PrP responds to the TNFα-triggered NF-κB signaling pathway by preventing the deubiquitinase activity of CYLD on RIP1 and TRAF2 (published).
- Investigated how PrP expression influences the establishment of Herpes Simplex Virus Type 1 latency.
- Techniques: fluorescence microscopy, UV-Vis spectrophotometry, RT-PCR/qPCR/PCR, CRISPR/Cas9, molecular cloning, SDS-PAGE, Native PAGE, Western blot, Co-IP, IP, and ELISA.
- Team Leader / Slides & Poster Speaker2014-01 - 2015-09Synthetic-biology team lead; Silver Medal at the iGEM 2015 Jamboree.
- Led a synthetic-biology project constructing a DNA criticality-detector circuit in E. coli as an automatic medicine-dosage threshold for addressing human dental caries.
- Awarded a Silver Medal at the iGEM 2015 Jamboree.
Skills
High-Performance Computing
- HPC
- Slurm
- Linux cluster administration
- benchmarking
Research Software Engineering
- Nextflow
- nf-core
- workflow optimization
- Open OnDemand
Bioinformatics & Machine Learning
- genomics pipelines
- MLP
- CatBoost
- SHAP
- DBSCAN
- Python
Publications
- Longitudinal dynamics of the nasopharyngeal microbiome in response to SARS-CoV-2 Omicron variant and HIV infection in Kenyan women and their children2025mSystems, American Society for MicrobiologyA longitudinal study of how the nasopharyngeal microbiome responds to SARS-CoV-2 Omicron infection and HIV status in Kenyan women and their children.
- Baseline Sequencing Surveillance of Public Clinical Testing, Hospitals, and Community Wastewater Reveals Rapid Emergence of SARS-CoV-2 Omicron Variant of Concern in Arizona, USA2023mBio, American Society for MicrobiologyGenomic surveillance across clinical testing, hospitals, and community wastewater capturing the rapid emergence of the SARS-CoV-2 Omicron variant of concern in Arizona.
- Prion protein is required for tumor necrosis factor alpha (TNFα)-triggered nuclear factor kappa B (NF-κB) signaling and cytokine production2017Journal of Biological ChemistryPrion protein is required for TNFα-triggered NF-κB signaling by preventing the deubiquitinase activity of CYLD on RIP1 and TRAF2. JBC Recommended Reads, Oct 2017.
- Provisioning a Large-Scale AI Platform Composed of Intel Gaudi2 Accelerators at Arizona State University2026PEARC (Practice and Experience in Advanced Research Computing)A case study on standing up and operating a large-scale AI platform built on Intel Gaudi2 accelerators. Long paper.
- Ten Practices for Refactoring Scientific Pipelines to nf-core DSL2 on Shared Slurm HPC2026US-RSETen practical recommendations for refactoring scientific pipelines to nf-core DSL2 on shared, Slurm-based HPC. Long paper.
- Optimizing Nextflow-based Software on Shared HPC Resources: A Case Study with make_lastz_chains2025US-RSEA case study on optimizing Nextflow-based software for shared HPC resources using the make_lastz_chains pipeline. Long paper.
Presentations
- HPL (Linpack) and Other Popular Benchmarks on Heterogeneous HPC Clusters2026RMACC HPC SymposiumBoulder, CO, USA
- Tuning Workflow Management Systems for Shared HPC Resources2026RMACC HPC SymposiumBoulder, CO, USA
- A Clinical Decision Support System Based on Prescription Drug Monitoring Programs for Patient Pain Management20195th Annual Mayo Clinic–ASU BMI/BMD Student Poster and Employer Networking EventPhoenix, AZ, USAPoster.
- A DNA Criticality-Detector Circuit in E. coli for Automatic Medicine-Dosage Thresholds2015International Genetically Engineered Machine (iGEM) 2015 JamboreeBoston, MA, USAPoster & slides, Team WHU-China. Silver Medal.
Teaching
- Undergraduate Machine Learning Curriculum (MAT 400-level)2021Arizona State University, School of Mathematical and Statistical SciencesRole: Undergraduate courseDesigned a MAT 400-level machine learning curriculum taught at ASU since Fall 2021.
- Certified Instructor, The Carpentries2024The CarpentriesRole: WorkshopsTeaching foundational computing and data skills to researchers through hands-on workshops.
- Mentor — Tuning Workflow Management Systems on HPC2026Cyberinfrastructure Community-wide Mentorship Network (CCMNet)Role: MentorshipLed a mentorship project on tuning workflow-management systems on HPC.
Languages
- EnglishFull professional
- ChineseNative / bilingual