Web & mobile apps
From a marketing site to a full product. Web apps, iOS and Android from one codebase, online shops, dashboards, and tools your team actually uses.
React · Next.js · React Native · Solid.jsJascha Dachtera
You bring the idea. I build the rest.
Web and mobile apps, AI features, API integrations, and the cloud infrastructure underneath. A senior engineer who takes your idea from first sketch to a product that's live. Fifteen years of shipping the real thing.
What I can build for you
AI features
Assistants and agentic flows that do real work, not demos. LLM features wired into your product, or AI workflows your team can actually run and trust, with the guardrails to ship them.
OpenAI · Anthropic · agent orchestrationAPIs & backend
The engine behind it all: integrations with the services you depend on, payments and subscriptions, databases, and APIs that stay fast as you grow.
Node.js · tRPC · GraphQL · PostgreSQL · StripeCloud & infrastructure
Deployment, scaling, and the plumbing nobody sees. Set up so it runs reliably and ships updates without drama.
AWS · Cloudflare · Docker · CI/CD · Pulumi- TypeScript
- React
- Next.js
- React Native
- Remix
- Solid.js
- Node.js
- tRPC
- GraphQL
- PostgreSQL
- MongoDB
- AWS
- Cloudflare
- Docker
- Pulumi
- OpenAI
- Anthropic
- Stripe
A note on vibe coding
AI changed how software gets built, and I'm all for it. Anyone can put together a prototype or a demo in a weekend now.
The gap is everything after: making it secure, fast, and ready for real users. That's still engineering, and I do it with the same AI tools, just faster, plus the judgment to know what's actually ready to ship.
How it works
step 1
A conversation
You talk, I listen. We find out if your idea and my work fit. I meet you where you are, and explain the technical parts in plain language.
step 2
A proposal
Plain language: what gets built, what it roughly costs, when it ships.
step 3
The build
You watch it grow on a live link as we go. You'll never wonder what's happening.
step 4
Launch & handover
It goes live. And I don't disappear the day it ships.
You own everything: the domain, the code, the keys. No lock-in, ever.
Start
The idea is the hard part. You've done that. Let's build it.
Hi Jascha, I'm . I need … pick one on the left. The rough idea is .
Send it
or just write: jascha.dachtera@gmail.com
Who you're working with
Fifteen years of building for the web. I started at an agency, shipping websites and business tools for dozens of clients, then spent years on staff at Native Instruments and Flowkey. These days I work freelance: for Germany's largest travel publisher, and for the founders and artists who hire me directly. In 2023 I founded my own company and built SazTunes, a music-learning app that's now live in both app stores. Most of it, one way or another, has been about music.
I studied Media Science, but most of what I do I learned hands-on, one project at a time. Based in Berlin and Málaga, working remotely with clients everywhere. Some days the office is a camper van in the Andalusian hills. German native, English fluent, just starting on Spanish.
