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
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.
Europe/Munich Open to selective engineering, product, and AI implementation work.
Engineering style
Practical architecture
The work is documented through implementation boundaries: data models, API contracts, background jobs, storage choices, client behavior, and release readiness.
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.
Turning ambiguous product requirements into a concrete technical plan.
Building the backend, web, mobile, data, or AI parts that need to fit together.
Reviewing an existing project for architecture, reliability, privacy, performance, or release risk.
Improving a working system without exposing private operational details or sensitive internals.
Selected evidence
Loyalty Cache Native iOS Loyalty Wallet
2026A native SwiftUI and SwiftData iOS app case study for scanning, storing, rendering, syncing, and quickly opening loyalty cards, with a share extension, favorites widget, App Shortcuts, and localized help.
SwiftSwiftUISwiftDataCloudKitWidgetKitApp Intents
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Photo(n) Cross-Platform Photo Platform
2026A 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
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Research Collaboration ML Matching API
2026A 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
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