High-level design (HLD)
System context, components, data flows, non-functional requirements and technology choices — the document that lets stakeholders agree before money is spent.
Consulting
Architecture decisions, written down before they get expensive.
Technical solution consulting for enterprise teams: high-level and low-level designs, integration architecture, reviews and estimates — from people who also ship the code.
What we do
Low-level design (LLD)
Interfaces and API contracts, data models, sequence diagrams, error handling and security — detailed enough for a development team to implement without guesswork.
Integration architecture
Single sign-on (Keycloak, OKTA), payments and point-of-sale, push-notification pipelines, search (Solr, Elasticsearch) and IoT messaging (MQTT) — designed from hands-on experience.
Reviews & estimates
Architecture and code reviews, migration plans, effort estimates and status reporting that management can act on.
AI
AI, without the hype
AI-ready architecture
Where do language models actually help in your systems? We assess the use cases, design integrations such as assistants that answer from your own documents, and plan for data protection, the EU AI Act and running costs.
AI-assisted SDLC
AI assistants support every step of our software development lifecycle — requirements and specifications, HLD/LLD documents, code, reviews, tests and documentation — with a human reviewing every result. Work gets done faster without lowering the bar, and we can help your team introduce the same practices safely.
Deliverables
Documents your teams can build from
- HLD and LLD documents, in English or Hungarian
- Integration specifications for development teams
- Architecture and sequence diagrams (PlantUML)
- API specifications (OpenAPI, Postman)
- Effort estimates and migration reports
Related work
MOL Move
Mobile solution architecture for MOL Move, MOL Group’s loyalty and mobility app in eight countries, and for the UTE, DAC and ETO football-club apps: the mobile apps, the application gateway and the microservices behind them.
Read the case study →Napi közbeszerzés
The Public Procurement Authority’s mobile service, built end to end: Android and iOS apps, a PHP API, an admin CMS, full-text search and a queued push-notification service.
Read the case study →ease, Flex
White-label HR apps: a Kotlin/Compose Android client with QR-code tenant setup, SwiftUI apps, and an OKTA single sign-on integration specification.
Shopfloor Reader
Warehouse and shop-floor app for rugged PDAs: picking, put-away, packaging and chemical lot tracking with Zebra and Honeywell barcode scanners, plus the API documentation of the manufacturing system behind it.
with Mikrum
Read the case study →Have a project in mind?
A new app, a system that needs a design before it gets built, or a second opinion on an architecture — let’s talk.