01
Mobile and web apps
In Flutter, end to end: authentication, payments, access control, onboarding, and the full App Store and Play Store review cycle.
FLUTTER · POSTGRES · AUTH · STORES
Software & AI engineering
Software
that runs.
Apps, integrations and AI systems for businesses that need them to actually work — built by the person you talk to.
PIEZOELECTRIC OSCILLATION · 32.768 kHz
01 — Why quartz
Quartz keeps the time.
Cut a crystal, apply a voltage, and it vibrates at a rate so stable that a processor can count on it. Every system that computes runs on that beat. We write the software that runs on top of it.
- Years of experience
- 03
- Selected projects
- 04
- Specialities
- 06
- Working languages
- 02
02 — Services
What we build.
Apps, backends, integrations and AI systems. Every project is quoted on its own: scope, price and delivery date agreed before it starts.
02
Backend, APIs and data
Data models, authentication, row-level security and scheduled processes, on private infrastructure.
PYTHON · FASTAPI · POSTGRES
03
AI inside software that already exists
Assistants, semantic search and structured extraction added to a product already in production, without rewriting it.
LLMS · RAG · PGVECTOR · HYBRID SEARCH
04
Private AI, on-premise
Local models on your own infrastructure or on a private server. No cost per use, and no data with third-party providers.
SLMS · QUANTIZATION · VLLM · PYTORCH
05
Automation and data acquisition
Scraping, scheduled pipelines, agents and automatic rundowns — the repetitive work running on a schedule instead of by hand.
AGENTS · SCRAPING · PIPELINES
06
Integration and compliance
The ERP and the tools you already run, connected; GDPR, DAC7 and identity verification handled as part of the build.
REST · WEBHOOKS · GDPR · KYC
03 — Work
Selected work.
Four projects: three for clients, one of our own.
P—01
CLAI — Enterprise AI and business intelligence
Competitor monitoring with weekly rundowns, a market prediction engine, a website chatbot and an internal BI assistant for an industrial client, with the backoffice behind them.
RAG · FORECASTING · FLUTTER · PYTHON
P—02
Agridata — Agricultural visit management
Field engineers record visits and crop treatment recommendations on site, and the farmer is notified automatically when a visit is submitted.
FLUTTER · POSTGRES
P—03
Stars — Client engagement
An invite-only app built on a curated restaurant guide, used by a company to strengthen the relationship with its clients.
MOBILE · SEMANTIC SEARCH · FLUTTER
P—04
Swiffy — Home services marketplace
Own product. Clients describe what they need in conversation and an AI assistant matches them to providers, by text or by voice.
LLMS · LOCAL SLMS · HYBRID SEARCH · KYC
04 — Team
One developer.
The person you talk to is the person who writes the code. No account manager between the brief and the build, no team to hand the project down to, and nobody learning on your budget.
Background
- StudiesBSc in Industrial Engineering and Management, University of Aveiro (ongoing) — the same language as the people who run a production floor.
- FreelanceThree years working as a freelance developer, delivering for industrial and consumer clients.
- 2026EuphoricQuartz incorporated in 2026.
- TodayWorks in Portuguese and English, from Aveiro, for clients anywhere.
Specialities
-
Private language models
SLMs on local hardware: quantization, serving and fine-tuning.
-
Assistants and search over company data
RAG, pgvector, hybrid search, structured output with server-side revalidation.
-
Mobile and web apps end to end
Flutter and Dart, including the full store review cycle.
-
Backend and data
Python, FastAPI and Postgres; row-level security and edge functions.
-
Automation and data acquisition
Agents, scraping, scheduled pipelines and automatic rundowns.
-
Infrastructure and compliance
Docker, Linux, Cloudflare, Tailscale...; GDPR, DAC7 and identity verification.
05 — Contact
Talk to us.
Send us an email or call us. If a form is easier, use the one on the right — it reaches the same inbox.
Phone
+351 967 607 855