Full-stack & mobile developer — .NET · Vue.js/Nuxt · Java · Flutter · Kotlin Multiplatform · AI integrations
I build web, mobile and enterprise systems for public administration, insurance, energy and the private sector across Slovakia and the Czech Republic — and I run my own B2B SaaS product on the side.
I'm a full-stack and mobile developer based in Bratislava with more than four years of commercial experience. Most of my work has been enterprise systems for demanding clients — the Czech National Archives, the Slovak Centre of Scientific and Technical Information, the Office for Personal Data Protection, UNIQA, SEPS — where correctness, integration with legacy systems and long-term maintainability matter more than the newest framework.
I specialise in .NET and Vue.js, Java backends and cross-platform mobile development (Flutter, Kotlin Multiplatform). I've worked across the entire project lifecycle: architecture and data model design, implementation, deployment, monitoring and operations — including releasing mobile apps to Google Play and the App Store on my own.
Over the past two years I've moved deeper into AI in production — designing an AI agent platform on the Anthropic Claude API, realtime speech-to-text pipelines and OCR-driven process automation. Alongside my day job I design and build Nerivo, a B2B SaaS for landlords, end to end.
02 Selected work
Four projects worth a closer look
Two of these I built solo end to end. For the two that can't be shown publicly, the architecture is documented instead of the screen.
Nerivo — B2B SaaS for landlords
Private beta 2026
Role
Founder / solo full-stack developer
Team
1
Segment
B2B SaaS / proptech
A platform that digitalises the entire rental lifecycle for small landlords — from the public listing page through to the signed lease and the rent landing in the right account. I designed and built the whole product end to end: data model, API, design system, infrastructure and CI.
Applicant screening and viewing scheduling, lease agreements with e-signature and digital handover protocols
QR rent payments with automatic bank statement matching and deposit management
Self-hosted infrastructure on Hetzner, provisioned with Terraform, containerised and deployed through CI
Subscription billing via Stripe, error tracking via Sentry
A web application that interprets spoken English into Slovak simultaneously, in real time. The hard part isn't the translation — it's latency: transcription, sentence segmentation and translation all have to run as overlapping streams, otherwise the listener falls a sentence behind and the output becomes useless.
Streamed speech-to-text with partial results, so translation starts before the speaker finishes the sentence
Incremental segmentation — the transcript is cut at semantic boundaries rather than fixed time windows
Streamed LLM translation, rendered token by token as it arrives
Static frontend deployed on Cloudflare Pages; no server-side session state
Architecture — Pipeline architecture
inputMic captureWeb Audio API
streamSpeech-to-textElevenLabs Scribe
logicSegmentationsemantic boundaries
streamLLM translationAnthropic Claude API
outputLive subtitletoken-by-token render
Why it's built this way: every stage is a stream, not a request. Transcription emits partial results, segmentation cuts them at semantic boundaries instead of fixed windows, and translation starts rendering before the speaker has finished the sentence — which is what keeps the listener from falling a full sentence behind.
ElevenLabs ScribeAnthropic Claude APIJavaScriptWeb Audio APICloudflare Pages
COSA — Czech National Archives
In production 2026
Role
Solo full-stack developer
Team
1
Market
Czech Republic
Segment
Public administration
Integration middleware for the Czech National Archives — a module of the IS NArP system that connects archival description software used by roughly 90 archives with the national digital archive and with external digital archives. It processes and translates SIP/AIP/DIP archival packages in the E-ARK/CSIP format. I designed and implemented the entire system end to end.
REST API (NMET2) with HMAC-SHA256 request signing, plus SOAP integrations towards legacy systems
Validation worker that verifies package structure and metadata before ingest
Buffer manager handling large package transfers and retries between systems
React admin interface for operators to monitor and re-drive transfers
Architecture — System context
ELZAarchival description
ProArchivarchival description
~90 archivesCzech Republic
COSA middleware
REST API NMET2 · HMAC
SOAP integrations
Validation worker
Buffer manager
IS NDAnational digital archive
External archivesthird-party systems
React adminoperations UI
The core problem: two sides of the integration speak different dialects of the same archival standard. COSA translates SIP/AIP/DIP packages between them (E-ARK/CSIP), validates structure and metadata before ingest, and buffers large transfers so a failure on one side never loses a package.
JavaSpringPostgreSQLReactTypeScript
AI agent platform — Modulario CRM
In production 2025 – 2026
Role
Architect & lead developer
Team
2
Segment
CRM / AI automation
A suite of AI agents built into a CRM system. I designed the architecture of the whole platform — including multi-tenancy, observability and deployment — and built the shared AI core the individual agents run on.
AI caller that autonomously conducts phone calls and writes the transcript straight into the CRM
OCR agent extracting structured data from documents and business cards
E-mail verification, outreach copy generation and a task agent
Shared Python AI core on the Anthropic Claude API, with metrics exported to Grafana
PythonFastAPINode.jsAnthropic Claude APIElevenLabsGroq WhisperRedisMongoDBDockerGitLab CI/CDGrafanaHetzner
03 Timeline
The full track record
Every project I've shipped since 2021, in reverse chronological order — with the role I held and the team size around me.
Personal products
Founder / solo developer
2026
Designed, built and operated entirely on my own — from data model to infrastructure.
Integration middleware translating SIP/AIP/DIP archival packages between archival description software and the national digital archive.
JavaSpringPostgreSQLReactTypeScript
2025 – 2026
AI agents & integrations — Modulario CRM
Role: Architect & lead developer · Team: 2 · Segment: CRM / AI automation
AI caller, OCR agent, e-mail verification and outreach generation on a shared Python AI core.
PythonFastAPINode.jsAnthropic Claude APIElevenLabsGroq WhisperRedisMongoDBDockerGitLab CI/CDGrafana
2025 – 2026
In The City
Role: Lead web developer + mobile developer · Team: 8 · Segment: Local services / marketplace
Digital city guide with shops, accommodation, real estate, events and jobs — online reservations, loyalty programmes and digital vouchers. I also handled the Google Play and App Store release process myself.
Faculty of Natural Sciences, University of Ss. Cyril and Methodius, Trnava
Bachelor's thesis: Development of cross-platform mobile applications using Google Flutter and Firebase (2022) — a practical Flutter application backed by Firebase.
Looking for someone who can take a project from architecture through to production and stay responsible for it afterwards? Write to me — I usually reply the same day.
