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I’m a full-stack developer and AI-focused software engineer who ships end-to-end systems—from compliance and billing workflows to real-time dashboards and document intelligence pipelines. I build reliable backend services (APIs, databases, automation) and responsive frontend experiences while prioritizing evaluation, testing, and performance. I’ve also trained and evaluated AI systems by generating preference datasets and measuring quality/failure modes at scale. I enjoy turning complex operational problems into structured software that reduces manual effort, improves accuracy, and scales with real-world teams.…I’m a full-stack developer and AI-focused software engineer who ships end-to-end systems—from compliance and billing workflows to real-time dashboards and document intelligence pipelines. I build reliable backend services (APIs, databases, automation) and responsive frontend experiences while prioritizing evaluation, testing, and performance. I’ve also trained and evaluated AI systems by generating preference datasets and measuring quality/failure modes at scale. I enjoy turning complex operational problems into structured software that reduces manual effort, improves accuracy, and scales with real-world teams.

Jesus Diaz

Full Stack Developer, AI Engineer, Web Developer, +2

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I’m a full-stack developer and AI-focused software engineer who ships end-to-end systems—from compliance and billing workflows to real-time dashboards and document intelligence pipelines. I build reliable backend services (APIs, databases, automation) and responsive frontend experiences while prioritizing evaluation, testing, and performance. I’ve also trained and evaluated AI systems by generating preference datasets and measuring quality/failure modes at scale. I enjoy turning complex operational problems into structured software that reduces manual effort, improves accuracy, and scales with real-world teams.…I’m a full-stack developer and AI-focused software engineer who ships end-to-end systems—from compliance and billing workflows to real-time dashboards and document intelligence pipelines. I build reliable backend services (APIs, databases, automation) and responsive frontend experiences while prioritizing evaluation, testing, and performance. I’ve also trained and evaluated AI systems by generating preference datasets and measuring quality/failure modes at scale. I enjoy turning complex operational problems into structured software that reduces manual effort, improves accuracy, and scales with real-world teams.

Available to hire

I’m a full-stack developer and AI-focused software engineer who ships end-to-end systems—from compliance and billing workflows to real-time dashboards and document intelligence pipelines. I build reliable backend services (APIs, databases, automation) and responsive frontend experiences while prioritizing evaluation, testing, and performance.

I’ve also trained and evaluated AI systems by generating preference datasets and measuring quality/failure modes at scale. I enjoy turning complex operational problems into structured software that reduces manual effort, improves accuracy, and scales with real-world teams.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Spanish; Castilian

Fluent

Japanese

Beginner

Work Experience

Fullstack Developer at Behavioral Therapy ABC

January 1, 2023 - Present

Shipped an end-to-end system for a behavioral therapy practice including session documentation, compliance tracking, and billing for 50 clinicians and 100+ clients. Optimized live client graph data visualization using SQL, improving performance by ~15% and ensuring real-time accuracy. Built an automated document notification service using an LLM to classify and route 200+ client communications weekly, reducing manual email handling by ~40%. Managed and updated frontend components for regular calendar/event content delivery. Automated invoicing by modeling CPT/POS codes and billable units, replacing ~15 hours/week of manual billing. Implemented a compliance engine tracking credential expirations and locking non-compliant staff to reduce Medicaid audit exposure.

Remote AI Training Engineer / Software Quality Contractor at Appen AI Systems

January 1, 2022 - January 1, 2023

Produced human preference data for code-generation model training (RLHF) by rating, ranking, and rewriting 25,000+ model responses against correctness, efficiency, and style rubrics. Evaluated code across multiple languages to identify logic errors, edge-case handling issues, and non-idiomatic patterns. Maintained a 98% quality-audit score used for contract renewal. Applied annotation rubrics at scale and developed judgment on where LLM code output reliably breaks down.

Account Services Representative / Customer Support Specialist at Remote Learning with ABA Analytics

January 1, 2020 - January 1, 2022

Provided client intake and consultations for an ABA therapy practice, building operational domain knowledge around session documentation, authorizations, and compliance records. Audited and maintained 300+ client records in a spreadsheet-driven process and identified data-integrity issues that motivated automation. Built Excel reporting dashboards for practice metrics to surface gaps missing from manual tracking.