01 / Project shape
Full product surfaces
Case studies cover web apps, backend APIs, native mobile clients, data pipelines, realtime systems, and AI-assisted product workflows.
About
Freelance technical work, shown through evidence
This page is a concise profile for selected freelance and self-directed project work. It is not a full employment history; it focuses on technical scope, implementation range, and the kind of problems this portfolio can support.
Profile
Developer for practical product systems
Europe/Munich Open to selective engineering, product, and AI implementation work.
I work across the parts of software projects that usually need to agree with each other: product flows, backend contracts, data models, web interfaces, mobile clients, AI features, and delivery constraints.
The selected case studies show technical work from a public, security-conscious perspective. They describe stack choices, implementation boundaries, and delivery decisions without turning private projects into open operational runbooks.
Case studies
4
Selected public technical projects.
Domains
4
ai, data, mobile, web
Skill groups
4
Application, backend, data, AI, reliability, and delivery.
02 / Engineering style
Practical architecture
The work is documented through implementation boundaries: data models, API contracts, background jobs, storage choices, client behavior, and release readiness.
03 / Delivery profile
Build and maintain
The portfolio emphasizes implementation, deployment readiness, operational thinking, debugging, and maintainable handoff instead of isolated feature screenshots.
How I can help
Useful when the project needs both implementation and judgment.
- 01 Turning ambiguous product requirements into a concrete technical plan.
- 02 Building the backend, web, mobile, data, or AI parts that need to fit together.
- 03 Reviewing an existing project for architecture, reliability, privacy, performance, or release risk.
- 04 Improving a working system without exposing private operational details or sensitive internals.
Selected evidence
A cross-platform photo system case study spanning a Bun/Hono API, Next.js web interface, SwiftUI iOS app, Kotlin Android app, realtime infrastructure, AI photo analysis, moderation workflows, private messaging, and production-readiness design.
BunHonoPostgreSQLPrismaRedisBullMQ
Read case study A Python and FastAPI matching service case study used by Fusio(n) for researcher-to-researcher matching, combining transformer embeddings, structured profile categories, bidirectional scoring, caching, and accelerated inference.
PythonFastAPIPyTorchTransformersSPECTER2all-MiniLM-L6-v2
Read case study A Laravel and Inertia platform case study for research collaboration discovery, AI-assisted matching, team formation, real-time communication, and production-readiness design.
Laravel 12PHP 8.3React 19TypeScriptInertia.jsPostgreSQL
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