Jayden Ontalan Capistrano Developer tooling / validation systems

About

I build developer tooling and validation systems around the parts of engineering work that need to stay reviewable: evidence records, guarded model calls, parser diagnostics, project dossiers, and self-hosted infrastructure.

I am a computer science student at the University of Hawaiʻi at Mānoa, expected to graduate in Autumn 2026, building towards software engineering roles through practical, inspectable projects.

Earlier spreadsheet and app projects still matter because they taught me how much boundaries and verification matter when a system depends on calculations. The current through-line is developer-facing systems: what was built, what evidence supports it, and where the decisions live.

  1. 01

    Modelled systems

    Started with spreadsheet-native modelling work where formulae, build comparisons, and verification discipline mattered.

  2. 02

    Developer tooling

    Moved towards local-first tools that keep AI-assisted work, evidence, records, and decisions inspectable.

  3. 03

    Validation workflows

    Built standards, dossier checks, source-backed claims, and validation entrypoints around project work.

  4. 04

    Self-hosted systems

    Treating deployment, checks, provenance, and maintenance as part of the system rather than the afterthought.

How I judge the work

Clear workflows

Can someone understand the path through the system without fighting the interface?

Reviewable evidence

Can a claim be traced back to source records, validation output, or a clear decision?

Operational reality

Can it actually be deployed, hosted, observed, and maintained after the demo works?

Stakeholder Contexts

Spire Hawaiʻi LLP

Forecasting workflow project with biweekly stakeholder meetings, progress demos, and feedback cycles around financial modelling, dashboards, and backend foundations.

Mānoa Faculty Senate

Local document retrieval and citation project with weekly stakeholder meetings for source context, project direction, and feedback on Faculty Senate document workflows.

CIO Council of Hawaiʻi

Funded education-focused project with recurring progress reports and a planned presentation to the Education Committee.