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Cristian Diaz Software & Operations

Expertise & Operating Model

How I approach system architecture, operational capacity, quality assurance mathematics, and the responsible adoption of artificial intelligence in high-stakes environments.

Engineering

Frontend for Dense Operations

Off-the-shelf dashboards collapse under the repetitive workload of operations analysts. I engineer single-window workbenches with sub-second feedback, zero superfluous re-renders, optimistic local caching, and comprehensive keyboard ergonomics.

TypeScript Astro SSG Optimistic UI Tailwind CSS WCAG 2.1 AA
Operations Strategy

Capacity Planning & Staffing Physics

Planning capacity with raw headcount or scheduled shifts alone creates systemic failure. Real capacity is modeled strictly in worked hours: deducting shrinkage (breaks, training, illness, shrinkage variance), aligning with queue arrival patterns, and modeling overtime thresholds.

Worked Hours Models Shrinkage Analysis P&L Variance EBITDA Protection
Quality Assurance

QA Design & Statistical Sampling

Arbitrary 5-ticket audits provide a false sense of security. I architect structured QA sampling engines that calculate statistically representative sample sizes, track inter-rater reliability, and distinguish systemic root causes from random human errors.

ISO 9001:2015 Inter-Rater Reliability Root-Cause SOPs Auditor Workbenches
AI Governance

Responsible AI Boundaries in Moderation

Autonomous AI models in trust, safety, and content intelligence introduce severe hallucination and liability risks. I architect strict human-in-the-loop gates where AI acts as a pre-classifier and assistive summarizer, but the sovereign judgment remains with the trained human operator.

Human-in-the-Loop Deterministic Scoring Prompt Engineering Confidence Routing
Executive Leadership

Operational Governance & Incident Forensics

Governing multinational service delivery across European markets. Managing SLA, ART, CSAT, and AHT under contractual rigor, while running calm, structured post-mortems when critical service disruptions occur.

SLA Governance ART / AHT Modeling CSAT Forensics Crisis Post-Mortems
Process Optimization

Lean Six Sigma Continuous Improvement

Eliminating cognitive waste (Muda) and process variation (Muri). Applying DMAIC methodologies to redesign operational workflows, reducing cycle time by up to 40% and cutting operating costs by 65% across multi-skilled hubs.

Lean Six Sigma DMAIC Framework Value Stream Mapping Cross-Utilization

Core Operating Convictions

1. Software is an operational cost or an operational leverage point. Off-the-shelf enterprise suites often impose administrative overhead that slows down front-line teams. Custom tools built with lightweight web standards return time directly to operators.

2. Metrics must describe physical reality. High CSAT achieved at the expense of unmanageable backlog growth or burnt-out teams is a failure mode disguised as success. Healthy operations balance throughput, customer satisfaction, and operator endurance.

3. AI is an assistant, not a sovereign decision-maker. In sensitive areas like trust, safety, moderation, and employee performance audits, AI models must generate structured recommendations with confidence scores for human sign-off, never unsupervised verdicts.

Looking for technical leadership or operational advisory?

Let’s discuss your current operational challenges, tooling requirements, or service delivery goals.

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