Research Profile

My work connects Artificial Intelligence in Education, learning analytics, and learning systems design. I study learner modeling, knowledge tracing, data provenance, and the evaluation of AI-supported learning, with an emphasis on reproducible methods and careful interpretation of observational evidence. This research builds on my experience in university teaching, engineering management curriculum leadership, and Moodle-based workplace learning. I aim to examine how rigorous empirical research can inform the design and evaluation of learning technologies.

Academic CV (PDF) Professional CV (PDF) Lebenslauf (Deutsch)

Portfolio

Research Learning & Development AI Engineering AI in Education Systems Engineering

Publications

Research outputs are grouped by status, separating working manuscripts from published work and other academic materials.

Working papers (2026)

arXiv submission in progress; one endorsement pending. These are working manuscripts, not published or peer-reviewed papers.

  • Saputra, D. W. (2026). When Knowledge-Tracing Rankings Depend on Available History: A Source-Correction and Matched-Information Audit on ASSISTments 2009 and 2015. Working manuscript · arXiv endorsement pending · Knowledge tracing, source-data provenance, and matched-information model evaluation Code and manuscript
  • Saputra, D. W. (2026). Early Assessment Submission and Subsequent Course Outcome: A Day-30 Landmark Observational Analysis of OULAD with Explicit Weighting Diagnostics. Working manuscript · arXiv endorsement pending · OULAD learning analytics, day-30 landmark, propensity weighting, and overlap diagnostics Code and manuscript

Articles and conference proceedings

  • Silalahi, F. T. R., Saputra, D. W., Panjaitan, G., Butar-Butar, M., & Manurung, N. M. (2023). Influencing Student Choice: A Case Study of a Boarding Private University in Indonesia. Proceedings of ICEBE 2022, pp. 429-443. DOI
  • Saputra, D. W. (2022). Optimalisasi Rute Distribusi Kurir Menggunakan Metode Traveling Salesman Problem (Studi Kasus: JNE Balige) [Optimization of Courier Distribution Routes Using the Traveling Salesman Problem Method (Case Study: JNE Balige)]. G-Tech: Jurnal Teknologi Terapan, 6(2), 159-165. DOI
  • Meliala, G. N., & Saputra, D. W. (2020). Usulan Tata Letak Gudang Non Semen Menggunakan Metode Class-Based Storage di PT Intiaga Sukses Abadi Cabang Medan [Proposed Non Cement Warehouse Layout Using the Class Based Storage Method at PT Intiaga Sukses Abadi, Medan Branch]. Jurnal Industri Kreatif, 4(1), 17-26. DOI
  • Siboro, B. A. H., Sinaga, R. H. M., & Devis Wawan Saputra Simanjuntak (2019). Rancang Bangun Alat Pengering Andaliman dengan Menggunakan Metode Quality Function Deployment (QFD) [Design and Development of an Andaliman Dryer Using the Quality Function Deployment (QFD) Method]. Jurnal Sains dan Teknologi, 19(2), 133-140. DOI
  • Tampubolon, S. L., Devis Wawan Saputra Simanjuntak, & Simanjuntak, M. (2019). Analisis Kepuasan Wisatawan terhadap Atribut Wisata Menggunakan Metode CSI dan IPA pada Wisata Pemandian di Kabupaten Tapanuli Utara [Analysis of Tourist Satisfaction with Tourism Attributes Using CSI and IPA Methods at Bathing Tourism Sites in North Tapanuli Regency]. Jurnal Sains dan Teknologi, 19(2), 141-151. DOI
  • Sinaga, R. H. M., & Saputra, D. W. (2019). Performance Investigation of Geothermal Power Plant Based on Exergy and Exergoeconomic Analyses (Case Study: Sarulla Geothermal Power Plant). IOP Conference Series: Materials Science and Engineering, 546, 072006. DOI

Both Jurnal Sains dan Teknologi articles belong to the 2019 issue and use the author surname Simanjuntak.

Other research outputs

  • Simamora, N., Simanjuntak, D., & Tampubolon, N. (2023). Sport Tourism in Lake Toba Area: Moving Forward. 2nd Global Conference on Hospitality, Tourism and Sports Management, Bali, Indonesia. Conference abstract, not a verified full-length peer-reviewed article. Conference abstract (PDF)
  • Hartono, R., Saputra, D. W., & Hutasoit, J. T. H. (2006). Penerapan Algoritma Greedy pada Optimasi Pengaturan Lampu Lalu Lintas Sederhana. [Application of a Greedy Algorithm to Optimize Simple Traffic Light Control]. Undergraduate technical paper, Institut Teknologi Bandung. ITB full paper (PDF)

Books and institutional documents

  • Devis Saputra, Siboro, B.A.H., and Sinaga, C. (2022). Metodologi Pelaksanaan Kerja Praktik di Bidang Manajemen Rekayasa [Methodology for Conducting Practical Work in Engineering Management]. Feniks Muda Sejahtera. ISBN 978-623-5950-74-7.
  • Siboro, B. A. H., Manik, Y., Pardede, S., Panjaitan, O., Siahaan, M., Simamora, E., Sinaga, R. H. M., Saputra, D. W., et al. (2022). Peningkatan Nilai Andaliman: Rantai Pasok, Produk Turunan, dan Teknologi Tepat Guna [Andaliman Value Enhancement: Supply Chain, Derivative Products, and Appropriate Technology]. Kanisius. Edited by Y. Manik, C. E. Setyowati, and T. Setyowati. ISBN 978-979-21-7351-2. National Library catalog.
  • Saputra, D. W. (Coordinator). (2019). Kurikulum Program Studi Manajemen Rekayasa, Institut Teknologi Del, 2019–2024 [Curriculum of the Engineering Management Program, Institut Teknologi Del, 2019 to 2024]. Internal academic document (not a commercially published book).

Intellectual property

  • Siboro, B.A.H., Sinaga, R.H.M., and Devis Wawan Saputra (2020). Rancang Bangun Alat Pengering Andaliman dengan Menggunakan Metode Quality Function Deployment (QFD) [Design and Development of an Andaliman Dryer Using the Quality Function Deployment (QFD) Method]. Registered copyright, 27 February 2020; recorded in ORCID.

Work Experience

January 2025 to present

Independent Learning Consultant

Paid freelance consulting and independent research · Remote, Indonesia
  • Developed learning resources for independent projects, including needs analyses, competency maps, onboarding materials and assessment plans.
  • Conducted independent learning analytics research, documenting dataset provenance, evaluation methods and interpretation limits.
July 2023 to August 2024

Program Manager (Learning and Development)

Suitmedia · Jakarta, Indonesia; remote (concurrent with lecturer role until June 2023)
  • Delivered 120 SCORM-compliant courses for approximately 100 new hires by leading a four-person Rocketversity team; an internal case study reported a 30% reduction in onboarding time.
  • Organized the 120-course Moodle library into reusable departmental materials by assigning content owners and review procedures.
November 2019 to October 2021

Head of Engineering Management Program

Institut Teknologi Del · Laguboti, Indonesia; concurrent with lecturer role
  • Led the revision of the Engineering Management curriculum for 2019 to 2024, incorporating alumni feedback, faculty review and industry input across 144 SKS and eight semesters.
  • Coordinated curriculum approval and course sequencing for eight lecturers by aligning learning outcomes, assessment requirements and academic governance reviews.
May 2016 to June 2023

Lecturer in Engineering Management

Institut Teknologi Del · Laguboti, Indonesia
  • Supervised more than 50 undergraduate theses and capstone projects with regular milestones, discussions and written feedback; taught engineering economics, entrepreneurship and systems thinking.
  • Developed practical exercises for the Astra Lean Production System teaching laboratory, turning lean manufacturing concepts into hands-on student activities.
May 2015 to October 2015

Program Manager, Health Technology Initiative

Summit Institute for Development · Mataram, Indonesia
  • Coordinated four developers and six field workers during the THRIVE OpenSRP rollout across 16 districts, working with project partners and investigators to address implementation issues.
  • Used field timing tests to guide a temporary form redesign; most revised mobile forms loaded in under 10 seconds in reported tests.
February 2011 to August 2011

Research and Development Engineer

PT Cipta Srigati Lestari · Jakarta, Indonesia
  • Developed Java-based optimization tools for supply-chain planning and operational decisions, translating client requirements into computational models.

Education

October 2012 to June 2014

MBA, International Business

University of Applied Sciences Würzburg-Schweinfurt (FHWS, now THWS), Germany · Final grade 1.8 (German scale)

Thesis: Leadership on Flat Organizational Structure: Focusing on Organization Using Self-Managing Team and Open Allocation Strategy. A qualitative case study of Valve and GitHub; thesis recorded in 2013 and degree completed in 2014.

August 2011 to October 2012

German Language Course, B2

Hartnackschule Berlin, Germany

Intensive German-language study in preparation for the MBA.

August 2004 to March 2010

Bachelor of Engineering, Informatics

Institut Teknologi Bandung (ITB), Indonesia

Thesis: Image Retrieval System Using Geotagged Information. Combined EXIF geolocation metadata with vector-space retrieval and evaluated TF, IDF and TF-IDF weighting using precision, recall and non-interpolated average precision.

Competence

Instructional Design and Learning Experience

Training needs analysis; ADDIE and SAM; learning objectives and learning paths; curriculum mapping; competency-based assessment; job aids; blended and experiential learning; work-integrated learning.

Learning and Development Leadership

Learning program management; team leadership; stakeholder and subject matter expert coordination; onboarding program design; learning content governance; course ownership; iterative delivery and review.

Learning Platforms and Authoring

Hands-on: Moodle, SCORM, Articulate 360 (Rise and Storyline), and learning content standardization. Familiar with: xAPI, Workday Learning, SAP SuccessFactors, and Cornerstone OnDemand.

Learning Analytics and Research Methods

Learner modeling and knowledge tracing; observational landmark designs; propensity-score and overlap weighting; model calibration; ROC-AUC, Brier score, MRR and macro-F1; cluster bootstrap; sensitivity, covariate balance and data leakage checks.

AI, Data and Software

Python, pandas, NumPy, scikit-learn, PyTorch, SQL, Java, Excel, Git and GitHub Actions; logistic regression, Bayesian knowledge tracing, GRU models, BM25 retrieval and TF-IDF classification.

Academic Program and Research Governance

Curriculum revision and academic review; accreditation preparation; learning outcome alignment; undergraduate thesis and capstone supervision; qualitative case studies; dataset provenance; reproducible analysis and reporting.

Languages

Indonesian and Batak: native. English: professional working proficiency (TOEFL iBT 101, 2012). German: B2 training (Hartnackschule Berlin, 2012).

Completed Professional Training

  • Advanced Machine Learning and Deep Learning, Indonesia AI (2025).
  • Intercultural Team-Building Seminar, FHWS MBA program, Gayfié, France (2013).
  • German B2 Language Training, Hartnackschule Berlin (2012).

Contact

Open to learning design, L&D and learning technology roles, as well as doctoral research in Artificial Intelligence in Education, learning analytics and educational systems centered on human judgment and learning needs. Based in Medan, Indonesia and open to remote work or relocation.

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