MTH

Masmur Toloni
Harefa

Information Systems graduate building softwares and data analysis projects.

View projectsThe resume PDF is not available yet.
  • Python
  • NumPy
  • pandas
  • Matplotlib
  • SQL
  • JavaScript
  • TypeScript
  • React
  • Next.js
  • Power BI
  • TensorFlow
  • scikit-learn
  • Git
  • GitHub
  • Docker
  • Prometheus
  • Grafana

Projects, with context.

Software Engineering

Insurance Claim Review API

Scores vehicle insurance claims so reviewers know which ones to investigate first. Trained, evaluated and served as a containerised API.

1.86 s → 0.024 s100 claims: individual requests vs one batch call, synthetic data
Pythonscikit-learnFastAPIDockerGitHub Actions
View on GitHub ↗

Data Analytics

Revenue Leakage Analysis

PostgreSQL and Excel analysis of sales, returns, pricing and receivables for a synthetic FMCG distributor, built to find where revenue actually leaks.

95.4%of outstanding billed receivables overdue (IDR 3.24B), synthetic data
PostgreSQLSQLExcelPower Query
View on GitHub ↗

Software Engineering

PolisKu Incident Lab

Five deliberate failures in a policy and claims API, each diagnosed with SQL, logs and runtime metrics, fixed, then re-measured.

78 ms → 0.2 msquery execution after indexing, measured locally; HTTP throughput 92 → 377 req/s
TypeScriptNode.jsPostgreSQLPrometheusGrafana
View on GitHub ↗

Data Analytics

Synthetic Claim Dataset

Seeded generator for the vehicle insurance claims the review API is trained on, with planted fraud, missing values and 2025 drift.

4 tablescustomers, policies, claims, workshops; hidden labels kept separate
PythonpandasNumPyJupyter
View on GitHub ↗

At the intersection of
systems and questions.

I’m Masmur, an Information Systems fresh graduate exploring opportunities in software engineering and data analytics.

My projects explore practical problems through software, data, and careful investigation.

Get in touch

I’d love to hear from you. I’m open to software engineering and data analytics roles, and conversations about interesting projects.

Emailmasmurharefa03@gmail.comGitHubgithub.com/masmur71LinkedInlinkedin.com/in/masmurharefa