01
App development
Native-quality iOS and Android apps — consumer or internal — built cross-platform or fully native, then shipped through the App Store and Google Play.
- iOS
- Android
- React Native
- Flutter
London software studio // est. 2026
We engineer mobile apps, web platforms, AI agents and data pipelines that actually ship.
One senior team that designs, builds and runs your product — from the first workshop to production monitoring, with no hand-offs in between.
# kick-off · week 1
$ sk plan --app --web --ai
✓ discovery workshop booked
✓ architecture & estimate ready
$ sk build --sprint 1
✓ iOS + Android shell
✓ API & admin dashboard
✓ AI assistant prototype
$ sk deploy --env production
● live — monitored, alerts on
// 01 — Services
Six disciplines, one team.
Pick one service or combine them. Either way you get the same people from start to finish, and one point of contact who knows your product inside out.
02
Web development
Fast websites, customer portals, SaaS products and e-commerce — accessible, SEO-ready and built to grow with you.
- Next.js
- React
- Node
- E-commerce
03
AI & machine learning
Practical AI that earns its place: assistants, document processing, search and smart automation, wired safely into your product and data.
- LLM apps
- RAG
- Agents
- Computer vision
04
Data & analytics
Pipelines, warehouses and dashboards that turn scattered spreadsheets and systems into numbers your team can trust.
- ETL / ELT
- Warehousing
- BI dashboards
- Python
05
Cloud & DevOps
Secure, cost-aware infrastructure with automated deployments, monitoring and backups — so releases are boring and outages are rare.
- AWS
- GCP
- Docker
- CI/CD
06
Product & UX design
Research, flows and interfaces people enjoy using — prototyped and tested before a single line of production code is written.
- Discovery
- Figma
- Prototyping
- Design systems
// 02 — What we build
Examples of what we ship.
Illustrative concepts, built here in plain HTML and CSS, of the four things clients most often ask us for. They are examples of our craft, not screenshots of client work.
Mobile app
Example · iOS & AndroidBooking, payments and reminders in one native-feeling app, with an admin side for your team.
Analytics dashboard
Example · BI & reportingOne source of truth for sales, operations and finance — refreshed automatically, defined once.
AI document assistant
Example · RAG over private filesAnswers grounded in your own documents, with citations so people can check the source.
Data pipeline
Example · ELT architectureScattered systems pulled into one tested, documented model that feeds reporting and AI alike.
* Illustrative concepts with sample data. Names and figures are fictional.
// 03 — Approach
From idea to launch in four steps.
A clear process with fixed checkpoints, so you always know what is being built, what it costs and when it lands.
01
Discover
A focused workshop to understand your users, goals and constraints. You leave with a scope, an architecture and a written estimate.
→ scope · estimate02
Design
Clickable prototypes and a technical plan, validated with real users before we commit to building.
→ prototype · plan03
Build
Two-week sprints with a live demo every week. You see working software early and steer as we go.
→ weekly demos04
Launch & grow
Store releases, deployment, monitoring and ongoing support — plus a roadmap for what comes next.
→ live · monitored
// 04 — Industries
Where our work fits best.
Sectors where software, data and AI make an obvious difference — and where the details of regulation, trust and operations matter.
Fintech
Financial services
Customer apps and internal tools where security, audit trails and clear money flows are non-negotiable.
- Onboarding & KYC flows
- Payment and ledger dashboards
- Document checks with AI
Commerce
E-commerce & retail
Storefronts, order tooling and data that connects stock, sales and marketing into one picture.
- Headless storefronts
- Inventory & order ops
- Sales and margin reporting
Health
Health & wellbeing
Booking, coaching and practice software designed for privacy, accessibility and people who are not tech-minded.
- Booking & reminder apps
- Patient and client portals
- Privacy-first data handling
Logistics
Logistics & field ops
Tools for people on the move: drivers, engineers and warehouse teams who need software that just works.
- Driver and technician apps
- Live tracking dashboards
- Route and capacity data
Services
Professional services
Firms that live in documents and inboxes, ready for automation that saves hours without new risks.
- AI search over case files
- Client portals & e-signing
- Workflow automation
Start-ups
Founders & start-ups
From idea to a first version real users can try — scoped tightly enough to learn fast and raise with confidence.
- MVPs and prototypes
- Investor-ready demos
- Scalable foundations
// 05 — Why us
Small team. Senior hands.
No layers of account managers and juniors learning on your budget. The people you meet are the people who build it.
Talk to an engineerTransparent pricing
Fixed-price discovery and clear estimates per milestone. No surprise invoices.
You own everything
Source code, designs, accounts and infrastructure are yours from day one — no lock-in.
Security & privacy by default
UK GDPR-aware data handling, least-privilege access, encrypted secrets and reviewed code.
AI where it helps — not everywhere
We recommend AI only when it measurably saves time or money, and we tell you when it doesn't.
Built to be maintained
Documented, tested code and a proper handover, so any capable team can pick it up later.
// 06 — Technology
Proven tools, chosen for you.
We pick the stack that fits your product and team — not the one that is trendy this month.
Mobile
- Swift / SwiftUI
- Kotlin
- React Native
- Flutter
Web & API
- TypeScript
- Next.js / React
- Node.js
- Python / FastAPI
AI & Data
- LLM APIs
- Vector search
- PostgreSQL
- dbt / Airflow
Cloud
- AWS
- Google Cloud
- Docker
- Terraform
// 07 — Engagement
Start small, scale when ready.
2–3 weeks
Discovery sprint
Turn an idea into a validated plan before you commit to a full build.
- Workshops & user research
- Clickable prototype
- Architecture & fixed estimate
Most popular
Product build
A dedicated team designs and ships your app, platform or AI feature end-to-end.
- Milestone-based pricing
- Weekly demos
- Launch & store release
Monthly
Team extension
Senior engineers who plug into your existing team, tools and rituals.
- Flexible capacity
- Your process, our people
- Support & maintenance
How much does a project cost?
It depends on scope. We start with a fixed-price discovery sprint, after which you get a detailed estimate per milestone. Smaller websites and prototypes can be quoted after a single call.
How long until we have something to show?
Usually two to three weeks for a clickable prototype, and four to eight weeks for a first working release of a typical app or web platform.
Do you work with start-ups or established companies?
Both. We help founders get a first product to market and help established teams modernise systems, add AI features or bring data together.
Who owns the code and intellectual property?
You do. Once invoices are paid, all source code, designs and related IP are transferred to you, and everything is hosted in accounts you control.
Can you take over an existing project?
Yes. We begin with a short code and infrastructure audit, fix the riskiest issues first, and then continue development or support.
Do you offer support after launch?
Yes — monitoring, security updates, bug fixes and new features on a flexible monthly plan.
// Ready when you are
Have something worth building?
Bring an idea, a half-finished product or a messy spreadsheet. In one free 30-minute call we'll tell you honestly what it would take.
// 09 — Contact
Tell us what you're building.
Share a few details and we'll reply within one business day with next steps — or book a free 30-minute consultation.
hello@spellegrinokey.co.uk
128 City Road, London EC1V 2NX
What happens next
- We reply within one business day.
- A free 30-minute call to understand the problem.
- A short written proposal: scope, approach and price.