Product engineering
Scalable platforms, modular architecture, and well-tested code that survives years of iteration without becoming legacy.
- Architecture & system design
- API & service design
- Modernisation & refactors
Engineered software. Crafted experiences.
We design, build, and ship digital products end-to-end — from system architecture and engineering to brand systems and interface craft. Independent, senior, hands-on.
We treat software as a product, not a deliverable.
Maclein Studios is an independent digital product studio. We partner with founders, teams, and operators who want their software to feel as considered as their brand — and their brand to behave as reliably as their software.
Every engagement is led by senior practitioners. There is no handoff to juniors, no diluted communication, no template-driven output. We design systems, write code, ship products, and stay close to the work as it evolves in production.
We also build products under our own roof — currently in stealth, with first releases planned for late 2026.
Our bias is towards craft, clarity, and longevity. Boring on the inside so it can be remarkable on the outside.
A full studio under one signature.
End-to-end product development across engineering, design, and brand. Pick a single capability for a focused engagement, or commission the studio for the whole arc.
Mobile development
Native and multi-platform apps built on modern foundations — Kotlin, KMM, Compose, SwiftUI — with a clean architecture spine.
- Android · Kotlin · Compose
- iOS · Swift · SwiftUI
- Kotlin Multiplatform Mobile
Web platforms
Performant, accessible, beautifully built web products. From marketing sites to multi-tenant SaaS dashboards.
- Angular · TypeScript · SCSS
- Static sites · SSR · ISR
- Design system implementation
Backend & platforms
APIs, services, and data layers engineered for resilience. Kotlin and Node services, PostgreSQL, Supabase, event flows.
- Ktor · Node · TypeScript
- PostgreSQL · Supabase
- Auth · payments · webhooks
Branding & identity
Logos, type systems, voice, and visual languages designed to last. Every system shippable as design tokens.
- Identity systems
- Type · colour · motion
- Brand guidelines
UX / UI design
Interfaces that feel inevitable. Research-grounded, prototype-driven, design-system native.
- Product UX & flows
- Interface design
- Design systems
A studio rhythm built around clarity.
Four phases, run sequentially or compressed into a single intensive sprint. Every phase produces an artefact you can act on — not a deck you have to translate.
Discover
We map the terrain. Audit the existing system, talk to the people closest to the problem, and frame the actual question worth solving.
- Stakeholder interviews
- Codebase & system audit
- Problem framing
Architect
We design the system. Architecture decisions, brand foundations, interface flows, and the constraints that make the whole thing buildable.
- System & data design
- Brand & UI foundations
- Decision records
Build
We ship the work. Clean architecture, code review on every change, design tokens enforced, performance budgets respected.
- Iterative delivery
- Code review & tests
- Production-ready output
Evolve
We stay involved. Observability, measured iteration, refinement loops — the work grows with the product, never against it.
- Telemetry & observability
- Continuous refinement
- Long-tail support
Tools we are fluent in.
Selected technologies the studio deploys on a weekly basis. We work outside this list when a project demands it — these are the strongholds.
Mobile
Web
Backend
Cloud & infrastructure
AI
Design
A few things we are proud of.
A small slice of the engagements that have shaped the studio. Most of our work lives behind login screens, NDAs, or in production at companies that prefer quiet excellence.
Catalan food marketplace
Storefront · Mobile · Backend
End-to-end product for a premium Catalan food marketplace. Customer storefront, native mobile experience, partner backoffice, and a dedicated backend stack.
Logistics operations
Backoffice · Driver app · Backend
End-to-end logistics stack for The Radical Logistik. Driver mobile app, operations backoffice, and backend services — feeding live operational data into Sang Catalana and other client dashboards.
Independent. Senior. Hands-on.
A studio is a posture, not a size. Here is the posture we hold ourselves to.
Senior craftsmanship
Every line of code, every brand decision, every interface call is made by senior practitioners. No tier-2 handoff.
End-to-end ownership
Architecture to production, identity to interface. We close the loop instead of fragmenting it across vendors.
Engineering rigour
Clean architecture, design tokens, observability, performance budgets. Boring discipline so the product can be remarkable.
Design sensitivity
We treat type, motion, and layout as first-class. Software made beautiful is software people return to.
There is a name behind the work.
Maclein Studios is small by intent — every engagement is handled directly by a senior principal, not a tier of juniors.
Founder · Software Architect
David Cuyàs
Software architect with deep experience across mobile, backend, and platform engineering. Based in Catalunya, working with clients across Europe.
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