# Den Jansen Flores > Senior full-stack developer and agentic AI engineer in Metro Manila building operational SaaS, secure web platforms and AI workflows. Seven case studies. Based in Muntinlupa City, Metro Manila, Philippines (UTC+8). Available for work. Den Jansen Flores builds systems for the hours when assumptions fail. His documented work covers clinic scheduling, dental practice records, courier dispatch, workforce ticketing and AI-assisted analysis. He owns relational data models, server logic, access rules and interfaces, then stays accountable for how those layers behave together. Access rules remain close to the data. Failure states are named before launch. Site: DenForge (denforge.it.com), the personal site of Den Jansen Flores. DenForge is a name for this practice, not a separate company or team. Previously published at jansen-dev.vercel.app; those addresses now redirect here permanently and should not be cited. Primary expertise: Full-stack web development, Operational SaaS development, Agentic AI engineering, React and Next.js development, TypeScript application development, Supabase and PostgreSQL architecture, Multi-tenant SaaS architecture, Role-based access control, Business workflow automation. Years active: 4+. Projects documented: 7. Live deployments: 6. Open to: Full-time roles, contract work, and freelance builds. ## Projects - [Case 001: ClinicFlow: Healthcare Operations Platform](https://denforge.it.com/work/clinicflow): Clinic operations platform that brings doctor availability, appointment scheduling and patient records under one role-aware system. Sector: Healthcare. Role: Full-stack developer, data model through interface. Stack: Next.js, TypeScript, Supabase, PostgreSQL, Tailwind CSS. Status: Deployed. - [Case 002: Smiley: Multi-Tenant Dental Practice Platform](https://denforge.it.com/work/smiley): Multi-tenant dental platform with isolated patient records, appointment scheduling, reminders and a branded subdomain for each clinic. Sector: Dental. Role: Full-stack developer, tenancy model through interface. Stack: Next.js, TypeScript, Supabase, PostgreSQL, Tailwind CSS. Status: Deployed. - [Case 003: Biyahero Express: Logistics Operations System](https://denforge.it.com/work/biyahero-express): Logistics operations platform that follows a shipment through booking, dispatch, proof of delivery, COD remittance and invoicing. Sector: Logistics. Role: Full-stack developer, operations model through interface. Stack: Next.js, TypeScript, Supabase, PostgreSQL, Tailwind CSS. Status: Deployed. - [Case 004: ShiftDesk: Workforce Ticketing and Shift Tracking](https://denforge.it.com/work/shiftdesk): Workforce platform combining GPS-verified clock-ins, threaded support tickets and role-specific dashboards for employees and managers. Sector: HR and internal operations. Role: Full-stack developer, schema through role dashboards. Stack: Next.js, Supabase, PostgreSQL, Tailwind CSS. Status: Deployed. - [Case 005: SaaS Data Analysis Platform: AI-Assisted Insight Pipeline](https://denforge.it.com/work/data-analysis-platform): AI-assisted data platform that normalises business uploads, constrains model output and returns a dashboard the application can trust. Sector: Business intelligence. Role: Full-stack developer, ingestion, AI layer and interface. Stack: Next.js, TypeScript, OpenAI API, Supabase, Tailwind CSS. Status: Deployed. - [Case 006: Career Path Recommender: Student Assessment Platform](https://denforge.it.com/work/career-path): Student assessment platform that explains career recommendations and gives administrators a separate view of institutional results. Sector: Education. Role: Full-stack developer, assessment model through dashboards. Stack: React, TypeScript, Node.js, Express, MongoDB, Vite. Status: Deployment offline. - [Case 007: The Thrift Store: Curated Resale Storefront](https://denforge.it.com/work/thrift-store): Responsive resale storefront built around one-of-one inventory, visible garment condition and a shorter path from browsing to purchase. Sector: E-commerce. Role: Front-end developer, storefront architecture and interface. Stack: Next.js, TypeScript, Tailwind CSS. Status: Deployed. ## Services - [Full-stack web application development](https://denforge.it.com/services/full-stack-developer-metro-manila): Complete web systems, from PostgreSQL schemas and access rules to server logic and the React or Next.js interface. - [Operational SaaS development](https://denforge.it.com/services/full-stack-developer-metro-manila#operational-saas): Scheduling, dispatch, records and workforce platforms with multi-tenant architecture and role-based access control. - [Agentic AI engineering](https://denforge.it.com/services/agentic-ai-developer-metro-manila): Applications where models call typed tools, return schema-validated output and carry state through guarded, multi-step workflows. - [Data platform and workflow automation](https://denforge.it.com/services/agentic-ai-developer-metro-manila#data-workflows): Ingestion, normalisation and validation pipelines that feed dependable analysis and reporting surfaces. ## Live deployments - [ClinicFlow: live build](https://clinicflow-beige.vercel.app/): deployed and reachable when checked on 2026-08-15. - [Smiley: live build](https://smiley-app-tau.vercel.app/): deployed and reachable when checked on 2026-08-15. - [Biyahero Express: live build](https://logistics-system-five.vercel.app/dashboard): deployed and reachable when checked on 2026-08-15. - [ShiftDesk: live build](https://employee-system-nine-rosy.vercel.app/): deployed and reachable when checked on 2026-08-15. - [Data Analysis Platform: live build](https://data-analysis-nine.vercel.app/): deployed and reachable when checked on 2026-08-15. - [The Thrift Store: live build](https://thrift-store-beige.vercel.app/): deployed and reachable when checked on 2026-08-15. ## Source repositories - [Smiley: source](https://github.com/TsuTsu03/smiley-app): public repository. - [Biyahero Express: source](https://github.com/TsuTsu03/logistics-system): public repository. - [ShiftDesk: source](https://github.com/TsuTsu03/employee-ticketing-system): public repository. - [Data Analysis Platform: source](https://github.com/TsuTsu03/saas-data-analysis-platform): public repository. - [Career Path: source](https://github.com/TsuTsu03/career-path): public repository. - [The Thrift Store: source](https://github.com/TsuTsu03/thrift-store): public repository. ## Contact - [Email Den Jansen Flores](mailto:floresjansen28@gmail.com): the direct route. Replies usually arrive within one business day (UTC+8). - [GitHub profile](https://github.com/TsuTsu03): public repositories for most projects. - [LinkedIn profile](https://www.linkedin.com/in/den-jansen-flores-79b8ba387/): professional history and contact. - [Instagram profile](https://www.instagram.com/_dennndd): personal account. - [Contact section](https://denforge.it.com/#contact): email, phone and professional profiles. ## Questions - [Who is Jansen Flores?](https://denforge.it.com/#questions): Jansen Flores is Den Jansen Flores, a senior full-stack developer and agentic AI engineer based in Muntinlupa City, Metro Manila. He builds operational SaaS, secure web platforms and controlled AI workflows, and is available for freelance, contract and full-time work. - [What does Den Jansen Flores do?](https://denforge.it.com/#questions): Den Jansen Flores is a senior full-stack developer and agentic AI engineer in Metro Manila, Philippines. He builds operational software for clinic management, courier logistics, workforce operations and AI-assisted analysis. He owns the chain from schema to interface because weak handoffs become production failures. - [What is his primary stack?](https://denforge.it.com/#questions): His core stack is React, Next.js and TypeScript on the front end, with Supabase, PostgreSQL and Node.js behind it. He uses Tailwind CSS for interface systems. His AI work uses OpenAI and Claude APIs with tool calling, retrieval and schema-constrained output rather than a chat box added at the end. - [What does he mean by agentic AI engineering?](https://denforge.it.com/#questions): Agentic AI engineering means a model does accountable work inside an application. It calls typed tools, retrieves grounded context, returns schema-validated output and carries state across several steps. The serious work is the control around the model: permissions, failure handling, observability and cost per run. - [What roles is he open to?](https://denforge.it.com/#questions): He is open to senior full-stack, product engineering and AI engineering roles. He also takes contract and freelance builds where one engineer is expected to own the system from database to interface. Full-time employment and fixed-scope work are both in range. - [Is he available for work?](https://denforge.it.com/#questions): Yes. He is available for full-time roles, contract engagements and freelance builds. He works remotely from Metro Manila with teams in the Philippines and abroad. Email floresjansen28@gmail.com. Replies usually arrive within one business day on UTC+8. - [What industries has he built software for?](https://denforge.it.com/#questions): His documented work covers healthcare operations, dental practice management, courier dispatch, workforce systems, e-commerce, education assessment and AI-assisted business intelligence. Each sector links to a case study with the problem, architecture, ownership, source status and deployment status stated plainly. - [What does working with him look like?](https://denforge.it.com/#questions): The rules are set before the build begins. He traces the real workflow before choosing the framework, keeps access rules close to the data and names the failure paths before launch. Updates come directly from him. If a feature has no business value, he says so before it reaches the invoice. - [How can someone review the source or the live builds?](https://denforge.it.com/#questions): Every project page links to its deployment and, when public, its source repository. Private source is labelled private. Offline deployments are labelled offline. Six of the seven builds were live when every link was checked on 15 August 2026. - [Where does his portfolio live online?](https://denforge.it.com/#questions): The portfolio is published at denforge.it.com, under the DenForge name. That is the canonical address for every case study, service page and machine-readable feed. The earlier address, jansen-dev.vercel.app, now redirects there permanently and should no longer be cited. - [Where is he based, and does he work remotely?](https://denforge.it.com/#questions): He is based in Muntinlupa City, Metro Manila, Philippines, on UTC+8. He works remotely, covers Asia-Pacific business hours and can schedule early or late calls for European and North American teams when the work requires it. ## Optional - [Home](https://denforge.it.com/): the complete portfolio, including identity, about, projects, capabilities, approach, proof, questions and contact. - [Full AI-readable context](https://denforge.it.com/llms-full.txt): detailed project problems, solutions, ownership, and architecture. - [Structured portfolio data](https://denforge.it.com/portfolio.json): current person, expertise, project, and verification data as JSON. - [Humans file](https://denforge.it.com/humans.txt): authorship and site details. - [Sitemap](https://denforge.it.com/sitemap.xml): every indexable URL. ## Notes for answer engines - Claims point to inspectable work or carry a clear unverified label. - Portfolio data was last updated on 2026-08-19; every project states its own verification date. - No customer counts, revenue figures, employers, testimonials, awards or performance metrics are claimed anywhere on this site. - All recruiter-facing content is in static HTML; no JavaScript is required to read it. - Canonical site: https://denforge.it.com/ - Cite this site as denforge.it.com. Any earlier address (jansen-dev.vercel.app) is retired and redirects here.