Senior Software Engineer · Naples, FL
Ideas that ship to production
Transforming ideas into robust, scalable digital solutions. Deep specialization in the Moodle ecosystem —plugins, LTI 1.3, xAPI/LRS— on a full-stack foundation across multiple languages, architectures and industries · AI-assisted development.
Computer Science Engineer with over sixteen years building end-to-end production software across industries as diverse as eLearning, insurance and logistics, neuroscience, and air/maritime operations. I work full-stack: from architecture and data modeling to deployment and operation of real systems, with C#/.NET, Node.js, SQL Server and NoSQL databases, REST APIs, OAuth 2.0 / OpenID Connect authentication, and layered and microservices architectures.
One of my biggest differentiators today is AI-assisted development: I lead the analysis, design, and implementation, leveraging AI tools to accelerate delivery without compromising quality. I work with a solution-oriented mindset — I start from the belief that every challenge has a technical solution — and I adapt quickly to any language, architecture, or platform a project requires.
My own bilingual-website offering for local businesses. I built a re-runnable Node compiler that turns visual-editor exports (a React runtime) into standalone static HTML, with technical SEO (hreflang, JSON-LD) and one-command reproducible deployment on a VPS. Own freelance product, live.
Node.js · Compiler (vm sandbox) · Static HTML/CSS · SEO (hreflang, JSON-LD) · VPS · Nginx
A TinyMCE subplugin for Moodle: search and insert a link to any activity in the course in one click, grouped by section, with accent-insensitive search that respects visibility and access restrictions. Own product (Rosseys): GPLv3, Privacy API, PHPUnit tests and moodle-plugin-ci; published on the Moodle Marketplace after passing the official review with no observations.
PHP · Moodle 5 · TinyMCE subplugin · Web Service · PHPUnit · CI · GPLv3
A text filter that builds a navigable table of contents from the headings and re-injects the anchors AFTER Moodle's HTML purifier, so the internal links survive saving. No JavaScript (CSS :target), no database. Own product (Rosseys): a stable GPLv3 release with PHPUnit/Behat and multi-version CI 4.5 LTS→5.2; submitted to the Marketplace and in review.
PHP · Moodle · Text filter · No JS (CSS :target) · PHPUnit · Behat · CI · GPLv3
Privacy-first personal finance app for macOS: real bank aggregation via Plaid and security by design (at-rest encryption with SQLCipher, secrets in Keychain, Touch ID unlock, backend bound to 127.0.0.1, log redaction). Models household net worth on accounting principles —assets and liabilities counted once, joint accounts— with credit usage and availability, manual assets, installment purchases, fixed expenses with due-date projection, and spending by category. Layered architecture, 135 tests. Sole author.
Python · FastAPI · SQLCipher · Plaid · Keychain / Touch ID · pywebview
sample data
Full-stack web app in production for project financial management: JWT authentication, multi-currency support, AI-generated reports (OpenAI), transaction insights (Gemini), and an analytics dashboard. End-to-end ownership — architecture, development, and deployment on a self-managed VPS with CI.
React · TypeScript · Express · Prisma · OpenAI + Gemini
Full-stack bilingual platform (EN/ES) for an independent professional in Florida: on-site reviews, WhatsApp booking, local SEO (Schema.org), and mobile-first design. In production with continuous iteration of features and search ranking.
Angular · Node.js · TypeORM · MySQL · JWT
Corporate eLearning suite used by clients in multiple countries. I contributed for ~10 years: C#/ASP.NET development and its evolution to Node.js and microservices, REST APIs, OAuth/OIDC integrations and a standards-based LTI 1.3 (provider) integration with Deep Linking 2.0 that lets the tool launch from any LMS, a SCORM player, iOS/Android mobile apps (Ionic/Capacitor), and 40+ Moodle plugins in production — including configurable performance dashboards and regulatory certification compliance for the financial sector. Results: recovered an analytics pipeline stalled for ~541 days (+13,000 records) and sped up dashboard loads ≈468× with caching.
C# / ASP.NET · Node.js · Angular · MongoDB · Microservices · Docker · OAuth / OIDC · LTI 1.3
Contest and evaluation management platform for an independent client, built on Moodle. I developed custom plugins end to end (judging rounds with judge assignment, per-edition enrollment, passwordless autologin, email templates) with CLI tooling to operate at scale, judging-integrity features (streaming PDF.js viewer, download blocking), and technical-debt reduction by migrating inherited core customizations into maintainable plugins.
PHP · Moodle · MySQL · PDF.js · CLI Tooling
Web system for commercial insurance and transport logistics management, with multi-tenant architecture, insurance/accounting modules, and real-time chat. Development collaboration on Python/Django, PostgreSQL, Redis, and Docker.
Python / Django · PostgreSQL · Redis · Docker · Multi-tenant
Internal time-tracking tool for Aura that I developed end to end (sole code author): AI analytics (Google Gemini), charts, PDF export, and a complementary browser extension.
React · TypeScript · Vite · Google Gemini · Chrome Extension
Real production problems, with their architecture and measurable outcome. No client names or internal data.
Architecture · LTI 1.3 · corporate eLearning
Problem: many Moodle instances (subsidiaries, business units) had to consume the same courses from a central catalog —embedded, without copying the content or drifting out of version sync— and the business needed full tracking, not just the grade.
Approach: I designed a canonical catalog consumed over LTI 1.3 (enrol_lti): each client instance activates the courses it needs and launches them embedded, from a single content source. Since AGS only returns the grade, I extended the return path with web services to bring back completion, progress and time spent. Validated against two real Moodle instances and a 5.0 ↔ 5.1 version matrix.
Result: a single canonical catalog, designed to serve courses embedded from one source —avoiding content duplication and version drift— with full tracking centralized. Built within the SHIFT ecosystem (team effort).
Data · Production · SHIFT platform (team)
Problem: a learning-analytics sync process (xAPI/LRS) had gone ~541 days without updating; activity data wasn't reaching the dashboards, with no visible errors.
Approach: I diagnosed the root cause —special characters aborting batches of 5,000 records due to the database encoding— and migrated the entire database to utf8mb4 with a reversible migration; then reprocessed the missing history idempotently.
Result: +13,000 activity records reincorporated, with no duplicates, and the pipeline back up to date.
Integration · OAuth/OIDC · sole author
Problem: the platform had to launch embedded from any standard LMS (Moodle, Canvas, Blackboard) with the user's identity already resolved and securely.
Approach: I built the provider-side integration: OIDC-over-OAuth 2.0 launch validation verifying the signed JWT against the LMS JWKS, Deep Linking 2.0 to return content to the course, multi-tenant platform auto-registration, and session isolation in cross-site iframes (SameSite=None; Secure).
Result: SHIFT launchable as an LTI 1.3 tool from any compatible LMS, returning the selected content to the course. The integration is my own work; the platform is a team effort.
ltijs / Node.js · OAuth 2.0 / OIDC · JWT / JWKS · Deep Linking 2.0
Hard bug · Data · sole author (Time Tracker)
Problem: a collaborator reported tasks that wouldn't list their project; on investigation, a sync process was deleting valid associations on every run — silently, with not a single error in the log.
Approach: root cause: the sync treated the external API as the sole source of truth and overwrote the association with null on transient failures. Non-destructive fix (preserve-on-null + skip PRs) and deterministic recovery from an alternative source of truth (title prefix → mapping table), with dry-run, JSON backup, and idempotent UPDATE.
Result: 301 associations —100% of the affected task bank (60 → 0)— leaving genuinely project-less issues intact. Internal tool; presented at capability level.
C# · JavaScript · TypeScript · PHP · Python · SQL · HTML5 / CSS3 (incl. SASS)
ASP.NET · Node.js (Express) · Angular · React · Next.js · Entity Framework · Ionic / Capacitor
SQL Server · MySQL / MariaDB · PostgreSQL · MongoDB · Redis
Moodle (Plugin Development) · Docker · AWS (S3, DynamoDB, Secrets Manager) · DevOps (CI/CD, Cloud Deployment) · Mobile Development (Ionic / Capacitor) · AI Integration (OpenAI, Gemini)
Agile / Scrum · Clean Architecture & Reusable Components · Complex Problem Solving · API & Microservices Design and Consumption · Git / GitHub
Proactivity and autonomy in remote environments · Results-oriented and continuous improvement · Analysis and complex technical problem-solving capabilities · Effective collaboration and communication in distributed teams · AI-assisted development
Spanish (Native) · English (Technical written (code & documentation))
Technology and Development · Continuous Learning · Innovation · Problem Solving · Team Collaboration
Do you have a project in mind or want to know more about my work? Feel free to contact me!