Mobile app development consultancy
Mobile apps,
built with intent.
O'Sullivan Cloud Solutions partners with product teams to design, engineer, and ship iOS and Android apps that feel effortless — and hold up under real-world scale.
What we do.
A small, senior team covering the full arc — from the first whiteboard session to the tenth production release. No hand-offs, no ceremony.
iOS & Android engineering
Native Swift and Kotlin, plus pragmatic React Native where it fits. Production-grade from day one — not prototypes dressed up for a demo.
Product strategy
We work with founders and product leaders to turn fuzzy ambition into a roadmap your team can actually build. Scope, sequence, and trade-offs, made explicit.
Design systems
Reusable component libraries and motion guidelines that survive a redesign. Your next feature should take days, not sprints.
Release & observability
CI/CD, crash reporting, and staged rollouts set up the right way the first time. Ship on Fridays without flinching.
About
A studio, not an agency.
We're a compact team of senior engineers and designers who work the way we wish more consultancies did: directly with decision makers, deeply on the hard problems, and without the churn of rotating staff.
The work we take on is the work we want to be known for, so we stay small on purpose.
- A decade of shipping consumer and B2B mobile apps at scale
- Engineering leads who’ve owned App Store and Play Store releases
- Comfortable embedding with in-house teams — or running the whole build
- Based in Ireland, working with clients globally
How we work
Four phases, no surprises.
- 01
Discover
A week of focused conversations with your team, your data, and your users. We leave with a written point of view on what to build and — just as importantly — what not to.
- 02
Design
Interaction design, motion, and a working component library in Figma. Decisions are captured in writing so the rationale survives the handover.
- 03
Build
Short cycles, always-releasable main, weekly demos. You see the app on your phone from week two and never lose that thread again.
- 04
Ship
Store submissions, staged rollouts, observability. We stay on past launch for as long as it takes for your team to fly solo confidently.
Have a project in mind?
Let's talk.
Tell us what you're building, who it's for, and where you're stuck. We'll come back within two working days with a candid take.