Description

Tech Lead & IC. Architected and shipped a white‑label, multi‑tenant mobile subscription app with real‑time dashboards, workout builder, live sessions, and CI/CD - rated 4.9★ from 5K+ App Store reviews Personal Fit is a white‑label platform that transforms how personal trainers operate. Trainers create and deliver programs, run live sessions, and monitor results; students receive workouts instantly, track progress, and stay engaged. I led the technical direction and day‑to‑day engineering quality, turning feature ideas into a stable product that earns top‑tier user ratings.

Solutions

Multi‑tenant & white‑label

Per‑trainer branding (name, logo, colors) and configuration.
Tenant‑aware roles/permissions for trainers vs. clients.
Growth‑ready code boundaries and ownership across modules.

Mobile subscription & access control

In‑app purchase paywall to unlock trainer programs and premium access (iOS).
Clear entitlement & gating flows aligned with Apple review guidelines. (“Offers in‑app purchases” shown on App Store.)

Real‑time engagement & content

Trainer Dashboard surfaces live KPIs (active clients, adherence, upcoming sessions, recent activity).
Livestreams and “train at home” experiences with immediate plan delivery and activity logging.

Workout builder & media

Templates + individualized plans; structured sets/reps/tempo/rest.
Integrated exercise video library for in‑app guidance.

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Ops & engineering quality

Architecture + backend services design.
CI/CD, automated checks, and PR review standards to keep the codebase clean, testable, and maintainable.
Performance refactors to keep UX responsive.

Responsabilities

Technical direction: architecture decisions, service boundaries, data modeling, and quality bars.

Hands‑on delivery: implemented key features end‑to‑end (iOS/Swift + backend).

Team leadership: ticket scoping, code reviews, and QA sign‑off for a 5‑engineer team.

Release & CI/CD: pipelines, review checklists, and smoke‑test gates.

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Results

4.9★ average rating across 5K+ reviews on the App Store.
Robust foundation for a scalable, white‑label trainer business (growth‑ready feature set, clean modular code, and clear ownership boundaries).
App Store: https://apps.apple.com/br/app/personal-fit/id1510016290

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FAQ

Can you build a cross‑platform or Android version?
‍Yes - this architecture and release process generalizes to Android and cross‑platform stacks. I lead iOS (Swift) here and apply the same multi‑tenant + subscription + dashboard + real‑time patterns on other stacks.

Do you support admin dashboards and analytics?Yes. This project includes a trainer dashboard with live metrics (adherence, sessions, activity). I design API‑first services to keep dashboards fast and maintainable.

What about payments?
‍This case uses Apple in‑app purchase for access gating; the same entitlement model translates to Stripe subscriptions on web or Android when needed.

Security and scalability?
I design tenant‑aware auth/roles, clean API boundaries, and CI/CD with gated releases - practical, scalable decisions for MVP‑to‑growth.

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