Anjo Tadena
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Projects

A selection of projects I've built or contributed to, showcasing system design, full-stack development, and cloud architecture.

UCC Filing Search System
Tech Lead / Full-stack Engineer

UCC Filing Search System

Reduced query latency by ~60% and automated ingestion workflows to cut manual effort by ~40%.

Challenge

UCC filing workflows were slow, error-prone, and difficult to search at scale across large document sets.

Tech Stack

Next.jsTypeScriptNode.jsAWSOpenSearch

Key Decisions

  • Indexed read models for search-heavy UX instead of overloading the transactional store.
  • Explicit observability for ingestion and search quality (latency, error rate, freshness).

Results

  • →~60% faster search responses via indexing and query optimization
  • →~40% less manual filing work via automated ingestion
Health Dashboard & API
Senior Frontend Engineer

Health Dashboard & API

Improved dashboard responsiveness and reduced UX friction across common clinical workflows.

Challenge

Teams needed a unified view of health data with reliable performance and consistent UI patterns.

Tech Stack

ReactTypeScriptRESTCI/CD

Key Decisions

  • Normalized API shapes at the edge to reduce UI conditionals and inconsistent states.
  • Small, composable components with clear semantics and accessible interactions.

Results

  • →Faster perceived performance through deferred rendering of non-critical sections
  • →Reduced UI regressions via shared primitives and stricter component contracts
I
Engineering Lead

Internal DevOps Platform

Standardized CI/CD patterns and reduced deployment variance across teams.

Challenge

Teams shipped inconsistently across environments with duplicated pipelines and unclear ownership boundaries.

Tech Stack

AWSTerraformKubernetesObservability

Key Decisions

  • Golden-path templates over bespoke pipelines to reduce long-term maintenance cost.
  • Least-privilege access model with auditable changes by default.

Results

  • →Reduced deployment variance via standardized pipelines and templates
  • →Faster onboarding through documented golden paths
Water District Admin Dashboard
Full-stack Engineer

Water District Admin Dashboard

Reduced ticket resolution time by ~50% with a unified admin workflow.

Challenge

Operational workflows were fragmented, leading to slow complaint and ticket handling with limited reporting.

Tech Stack

AngularLaravelMySQL

Key Decisions

  • RBAC-first approach to reduce accidental data exposure.
  • Report generation optimized for operational visibility and monthly exports.

Results

  • →~50% reduction in ticket resolution time
  • →Less admin overhead via automated reporting

Interested in working together?

I'm always open to discussing new projects, challenges, or opportunities.

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