§ 01Snapshot
- Levelsenior mobile engineer and mobile architect, more than ten years of iOS work; later led engineering at a small software studio (a team of roughly fifteen developers, QA and designers)
- Roles heldsenior iOS engineer on a large retail app · iOS engineer in healthtech · engineering lead of a small mobile-first studio
- Industriesconsumer retail and loyalty, payments inside mobile apps, healthcare and pharma education, consumer IoT, real estate and short-term rentals, e-commerce, gaming rewards, fitness, e-learning
- Company typesa large multinational retailer (thousands of locations); healthtech and fintech startups; small and mid-size businesses served through a studio
- Specialtiesmobile architecture and module boundaries, multi-country localisation (languages, currencies, regional rules), payment flows inside apps, accessibility (WCAG / ADA) for mobile and web, mobile-to-web migrations, failure-mode design (retries, offline, flaky networks)
- Best forseed and Series A startups with a consumer app · scale-ups expanding an app into new countries · corporate teams that must make an app accessible · founders who need a second opinion on a mobile codebase
- Core stackSwift / iOS, Kotlin, React Native, React / Next.js, Node.js / NestJS, Firebase, AWS, Google Cloud, REST, CI/CD (Jenkins, Docker)
- Time zonesNorth America (with a long career in Europe)
§ 02Services
| ✓ | PR/MR code review | iOS, React Native, Next.js |
| ✓ | Architecture review | mobile and mobile + web on a shared backend |
| ✓ | Architecture design | multi-market mobile apps, in-app payments, loyalty |
| ✓ | Audit / due diligence | mobile codebases; we pair this expert with a second reviewer on the first audits |
| ✓ | Vibe-code rescue | React Native / Next.js / Firebase MVPs |
| ✓ | Team mentoring | studio-scale: career ladders, performance reviews, code-review habits |
| ✓ | Accessibility review | WCAG / ADA |
§ 03Track record
Payments and loyalty app for a multi-country retail chain
A large retail chain needed one app for paying at the point of sale, collecting loyalty rewards and buying in store, across several European countries. One of our experts led iOS on that app for about four years, spending weeks on the core design (payment-flow abstraction, loyalty as an independent module) before product code. The app grew to several hundred thousand monthly users across thousands of locations.
Localisation architecture: new country = configuration, not a rebuild
The same retail app had to support several languages, currencies and regional regulations. Our expert designed an internationalisation layer where language, currency and per-market regulatory rules are configuration. Each new market was added without rebuilding the app.
Legacy back end to cloud for a high-traffic retail app
The retail app relied on legacy systems that limited scale and kept costs high. Our expert led the app side of the move to modern cloud infrastructure and worked with global teams on third-party integrations. Scalability improved and operating cost fell; the expert reports user engagement up by roughly a quarter over the period.
Accessibility (WCAG) for a connected consumer-device app
A connected home-device brand needed its companion app to be usable by people with disabilities. One of our experts led maintenance and optimisation of the app with a focus on WCAG compliance, fixing screen-reader, contrast and interaction issues. The app became more inclusive without a rewrite.
Real-time presenter-viewer sync for a pharma-education platform
A telemedicine and pharma-education platform needed presenters and viewers to stay in sync during live video sessions with decision-based content. Our expert built the iOS side with real-time WebSocket synchronisation, refactored for performance and security, and kept usability and accessibility in focus for healthcare users.
Architecture reviews before investment decisions
Investors and developers needed to know whether a product's codebase could carry the next stage. The expert reports leading dozens of independent architecture reviews, some feeding investment decisions. The usual findings: business logic in the UI layer, payment validation inside views, and tight coupling that a single third-party API deprecation exposes. We pair this expert with a second reviewer on early audits.
Engineering leadership of a small mobile-first studio
A small studio spread its engineers across many small contracts, with lots of context switching and onboarding overhead. As technical lead the expert introduced performance reviews and career ladders and refocused the studio on fewer, larger engagements that matched the team's real strengths. The expert reports lower attrition and a much higher average contract value.
Mobile app to web app on the existing Firebase back end
A rewards app (coins, digital items, gift cards) was mobile-only and limited by app-store distribution rules. In a studio this expert helped lead, the team rebuilt it as a responsive Next.js web app on the unchanged Firebase back end, keeping accounts, coin earning, the rewards store, referrals and support. Users can move between phone and browser with the same account, and browser users can join without installing anything.
Multi-market e-commerce storefront for a parts retailer
A European parts retailer wanted to stop depending on marketplaces and sell directly. The expert led delivery of a Next.js storefront connected to the existing WooCommerce catalogue and warehouse system, with several languages, search by vehicle model, social login and Apple Pay / Google Pay. Sales moved to the retailer's own channel.
Membership app with many integrations (studio project)
A members' club needed one app for bookings (restaurant, rooms, events), memberships with different access tiers, and a content feed, on mobile and web. A studio the expert helped lead built a React Native app and a web portal on one shared back end, integrated with subscription payments, a restaurant POS, calendar booking and push notifications. Members use one account on phone and browser.
§ 04What you can book
WCAG accessibility review of an existing app
A team needs its iOS / React Native / web app to meet WCAG (often for a customer or regulator) and doesn't know where it stands. The expert reviews screens with assistive technologies and the code behind them.
An issue list ranked by severity, code-level fixes for the worst items, and review rules so new PRs don't add regressions.
Second opinion on an AI-built or vibe-coded mobile MVP
A founder has a React Native or Next.js + Firebase MVP built quickly with AI tools and wants to know if it can carry real users and payments. The expert checks where business and payment logic live, how failures are handled (network drops mid-transaction, retries), auth and data rules, and app-store readiness.
A short keep / fix / rewrite map with the first fixes ranked.