Scalable APIs and backends with Node.js, Go and Python

6+ years building backends for startups and companies: solid APIs, well-modeled data and architectures that scale.

I design and build the brain of your product: REST and GraphQL APIs, databases, architecture and deployment. Modern stack in Node.js/TypeScript, Go or Python, whichever fits your project best.

I want to build my backend →

WHAT'S INCLUDED?

Solid, secure and scale-ready backend

Results-driven backend development: well-designed APIs, consistent data and an architecture ready to grow with your product.

How I work

It's not an improvised backend.

I approach every project with a focus on scalability, security and maintainability, with tests, documentation and a clear architecture before scaling.

The result: reliable APIs, consistent data and a backend your product can scale on with confidence.

Testimonials

What the products I've worked with say

Real APIs, integrations and platforms. Here are some of the people who trusted me with their backend.

★★★★★

"Rediseñó nuestra API y aguantó el crecimiento sin despeinarse. Código limpio, documentado y con tests."

Pablo M.

Pablo M.

CTO en startup SaaS

★★★★★

"Migró el backend a microservicios y bajamos los tiempos de respuesta a la mitad. Muy sólido en arquitectura."

Irene C.

Irene C.

Product Lead

★★★★★

"Implementó la autenticación y la seguridad de forma impecable. Nos dio mucha tranquilidad de cara a auditorías."

Javier S.

Javier S.

Fundador de plataforma fintech

★★★★

"Optimizó las consultas y la base de datos dejó de ser el cuello de botella. Profesional y muy metódico."

Carmen R.

Carmen R.

Engineering Manager

★★★★★

"Montó el CI/CD y el despliegue en cloud y todo se volvió mucho más fiable. Un backend en el que confiamos para crecer."

Hugo L.

Hugo L.

CEO en marketplace

Frequently Asked Questions

What questions do you need answered?

We answer the most common questions about how I develop the backend so you can decide with all the information.

  • Which languages and technologies do you use for the backend?

    I work with a modern stack: Node.js/TypeScript, Go and Python. I pick the language based on the project's needs (performance, ecosystem, team) and use established frameworks like NestJS/Express, Fiber/Gin or FastAPI.

  • Do you develop REST or GraphQL APIs?

    Both. I design well-structured, versioned REST APIs, or GraphQL when the client needs flexible queries. In both cases I include documentation (OpenAPI/schema) and best practices.

  • Which databases do you use?

    I work with SQL databases like PostgreSQL and MySQL, and NoSQL like MongoDB or Redis depending on the case. I handle data modeling, migrations and query optimization so performance keeps up with growth.

  • Will the backend be ready to scale?

    Yes. I design clean, scalable architectures, with microservices, message queues, events and caching when they add value, avoiding unnecessary over-engineering in the early stages.

  • Do you handle authentication and security?

    Yes. I implement authentication and authorization (OAuth2, JWT, sessions), data validation, access control and security best practices to protect your API and your users' data.

  • Do you take care of deployment and infrastructure?

    Yes. I set up CI/CD, Docker containers and cloud deployment (AWS, GCP, Cloudflare, etc.), plus logs, metrics and monitoring so the service is reliable and observable.

  • Can you integrate the backend with an existing frontend or app?

    Yes. I design the API with its consumer in mind (web, mobile or third parties) and coordinate with your frontend team. If you also need the frontend, we can handle it within the same project.

  • Do you offer support and maintenance after delivery?

    Yes. The code is delivered documented, with tests and monitoring, and we can agree on a support and continuous-improvement plan so the backend evolves securely.

Got a product that needs a solid backend, ready to scale from day one? Let's talk about your project