P/01Data Science
Transit Delay Explorer
A two-year window of public transit telemetry, reduced to an interactive report that explains where delay accumulates and why.
- Events processed
- 41M
- Query latency
- < 200ms
PythonDuckDBParquetObservable Plot
05 — Showcase
Built with DevCSE
Engineering work presented the way a reviewer reads it: the problem, the constraint, the approach and the numbers.
- Selected work
- 4
- Disciplines
- 4
- Documented
- Problem → result
- Window
- 2026
P/02Computer Science
Static Site Compiler
A markdown-to-HTML compiler with an incremental build graph, written to learn parsing and dependency tracking from first principles.
- Cold build
- 1.9s
- Incremental build
- 22ms
RustCriterionInsta
P/03Cybersecurity
Threat Model Toolkit
A structured workspace for documenting assets, trust boundaries and mitigations for a small web service, designed to survive review.
- Threats catalogued
- 63
- Mitigations tested
- 48
TypeScriptYAMLMermaidGitHub Actions
P/04AI & Machine Learning
Model Evaluation Harness
A benchmark harness that makes model comparisons reproducible: tracked datasets, fixed seeds and per-slice error reporting by default.
- Runs tracked
- 310
- Reproduced exactly
- 100%
PythonPyTorchHydraDVC
Questions
Questions, answered
01What qualifies for the showcase?
Work built against a DevCSE brief that is finished, documented and measured — problem, constraint, approach and numbers.
02How is the work presented?
The way a reviewer reads it: the problem first, the approach second, the results third, and the stack last.
03Can I submit my build?
Yes. Send the repository and a short write-up to hello@devcse.com with the brief it answers.
04Do the numbers get verified?
Results are reproduced from the submitted repository before a build is published.