Howdy! I'm Rubén, a freelance full-stack software engineer based in Berlin. Looking for some help with your project? I might be able to help!
I can help you build.
- Websites that are fast, accessible and search engine optimized.
- Native apps for iOS, iPadOS or macOS.
- Backend Services with great observability, clear documentation, and made to scale.
- Data Pipelines from tracking planning, to data warehouse extract-load-transform pipelines that give you accurate and actionable information.
- Infrastructure that can tie all your services, documented as code.
Optimize and improve.
- Supply chain analysis to reduce risk from dependencies across different packaging ecosystems.
- Automate code quality and deployment.
- Reduce cloud cost by optimizing your resource usage, plans and overall architecture.
- Optimize Large-Language-Model usage by creating custom tooling and Model Context Protocol (MCP) servers.
Or help your team go fast.
- Bring your team up to speed with new technologies, architecture patterns or processes.
- Bring product and engineering closer together.
- Experimentation mindset, help your team learn how to design, execute, and interpret experiments.
- Professionalize or streamline your processes by finding chokepoints and waste.
Ain't that right!
With over 25 years of experience, I've worked with big and small teams, ad-supported and sales-driven products, bootstrapped startups looking to launch, and established companies looking to scale up. I've worked with all sorts of stacks:
- Languages: JavaScript, Rust, Ruby, Python, PHP, Swift, Objective-C.
- Cloud Providers: AWS, Scaleway, Cloudflare, Google Cloud, Azure.
- CI Systems: GitHub, Gitlab, CircleCI, TravisCI, Jenkins, Bitrise.
- Database Systems: PostgreSQL, MySQL/Aurora, Redis, MongoDB, Apache Cassandra, Snowflake.
- Analytics Software: Google Analytics, Amplitude, PostHog, .
But don't take my word for it.
Here's what some lovely people have to say about me.