Santiago, Dominican Republic

Franklin "franklinmdev" Martinez

Full-stack engineer

I build products end to end, from the database to the screen. Lately that's been tax and compliance software for the Dominican market.

I grew up taking things apart to see how they worked, and I build software the same way. I start with the problem and the people who actually have it, and let that decide the rest.

Most of what I build deals with messy real-world rules like taxes, compliance, and internal operations, where getting the small details right matters more than the tech stack. I also help my team adopt AI tools in a way that actually pays off, and I mentor the junior developers around me.

01 — Experience

Work experience

February 2026 - Present

Full-Stack AI Engineer, Nubeteck, S.R.L.

I own products end to end, from the data model to the frontend. I build a commercial financial-management platform that we sell to clients, including multi-currency budgeting with approval workflows, and I keep maintaining and extending it as it grows. I also take on the harder integrations, like payment providers such as Lemon Squeezy. On top of that, I lead how the team adopts AI tools like Claude Code, and I mentor our interns and junior developers.

April 2023 - February 2026

Software Developer, Nubeteck, S.R.L.

I helped build a shared design system used across the company's products, tuned the app's data layers so the interface felt faster and more responsive, and mentored junior developers.

02 — Stack

How I work with AI

Picking technologies is table stakes now. With the right workflow anyone can ship in any stack. What sets the work apart is the system I build around the model, so I can take a brief and deliver a finished product fast without dropping quality.

01

From PRD to shipped product

Hand me a brief or a PRD and I deliver the whole thing: data model, backend, API, and a UI that non-technical people can actually use. Written research and a plan go in, a working product and a QA guide come out, with little back-and-forth.

02

Quality is enforced, not hoped for

Every project carries codified rules and edit hooks. Each change typechecks, lints, and validates the schema before it lands, so a type error or a stray console.log never reaches a commit.

03

The right model for the job

I split work across AI models, deep reasoning to plan and fast models to execute, so delivery stays fast without trading away rigor.


Technologies

Languages

TypeScriptJavaScriptC#PythonSQL

Frontend

ReactNext.jsAstroTailwind CSSshadcn/ui

Backend & data

Node.jsNestJSASP.NET CorePostgreSQLSQL ServerPrismaEntity FrameworkREST APIs

Workflow

JestPlaywrightCI/CDVercelClaude Code
03 — Projects

Selected projects

04 — Contact

Get in touch

Have a project, or just want to connect? My inbox is open.

Direct line