Tinta Verde — "green ink" — is a software studio in Medellín, Colombia. We design and build SaaS platforms and web applications, from mining-compliance software running at a gold operation to school management used by teachers every day. We work in English, in your time zone, with clear code and verifiable deliveries.
Every project solves a real operation, with real users, across very different industries.
Regulatory-compliance SaaS for mining titles in Colombia: production registration, oversight workflows and georeferenced data on PostGIS. Active pilot with a gold mining operation in Marmato, Caldas.
In production FastAPI · PostgreSQL/PostGIS · Next.js · RailwayAcademic management platform for schools: competency-based planning, term grading, role-based access for coordinators, teachers and students, and PDF reporting. Piloted at a bilingual school in Colombia.
Active pilot FastAPI · SQLAlchemy · Next.js · TailwindAn AI-narrated civilization simulation (Anthropic API): an ecological Sumerian world that evolves with the player's decisions. Contract project for an English-speaking client, delivered across all four phases.
Delivered Next.js · Supabase · Zustand · Anthropic APIThat's why step one is a requirements intake form: 10 minutes of your time, a serious proposal from us.
You fill out the online form: what your business does, the problem you want solved, the systems you use today. It's the input for everything that follows.
We send you a detailed hourly quote with phases, deliverables and explicit assumptions. No fine print.
We build with verifiable deliveries: you see working software, not slide decks. Versioned migrations, secure authentication, code in your own repository.
We go to production with you and stay close to the operation: support, adjustments and evolution based on what real usage teaches.
We're based in Medellín, Colombia, working remotely with clients in the United States, Canada and across Latin America. Colombia overlaps with US Eastern and Central time, so collaboration happens live — not overnight.
You communicate directly with the developer who writes your code, in fluent English, with the rates and proximity of a nearshore team.
Start now →SaaS platforms, custom web applications, APIs, geospatial systems and internal management tools. If your operation lives in spreadsheets and email threads today, that's usually where we create the most value.
We quote by the hour with explicit scope. A typical MVP starts from an hour estimate you know before committing; the intake form lets us give you a serious number, not an inflated range.
FastAPI and PostgreSQL (with PostGIS when maps or coordinates are involved) on the backend; Next.js and Tailwind on the frontend. Modern, maintainable, well-documented technology.
In English, directly with the developer — video calls, email or your team's chat tool. You get verifiable progress at each phase, and git operations on your repository always go through your explicit approval.
The requirements intake form takes about 10 minutes. With your answers we prepare a proposal with scope, phases and cost — no commitment.
Fill out the intake form → tintaverde.co — software written to last