AvailableOpen to full-time iOS roles

I build the whole product, not just the pretty part.

Jacob AguilariOS Developer · Swift and SwiftUI · Santiago, Chile

13 months on a six-person iOS team building Etnia Barcelona’s sales app, used offline across Europe and North America. On my own I’ve shipped two apps to the App Store, backend included.

Download CVSee my workLinkedIn

FreelanceHave a business? I also build websites, apps and systems to solve its problems.See services

Etnia Barcelona sales app on iPadTatakae coaching a workout hands-freePrend on the App Store
Etnia Barcelona · Tatakae · Prend
Results

Numbers from real projects

2MCLP

in sales the first month using the app

Saronna
200+

bookings handled live

Cuarto Detonao
40%

fewer redundant clicks when taking orders

Etnia Barcelona
1,000+

downloads on iOS

Prend
Work

Selected work

Team products, my own apps and client work. All of it shipped and in use.

40%fewer redundant clicks
  • iOS
Eyewear · Barcelona

Etnia Barcelona

iPad app used by the sales teams in Europe, the U.S. and Canada. SwiftUI, Combine and a Core Data to Swift Data migration. 40% fewer redundant clicks.

SwiftSwiftUICore Data
  • iOS
  • Web
  • Backend
Own product · App Store

Tatakae

Training app for calisthenics and strength that you use without touching the phone. A coach guides you through programs and routines you create yourself, tells you which exercise comes next and counts your reps with the camera, and a gesture starts or stops each set. On-device AI with Apple Foundation Models, friends and rankings on my own Java and Spring Boot backend, and a site in four languages.

SwiftSwiftUISwift DataJava
1,000+downloads on iOS
  • iOS
  • Android
  • Web
  • Backend
Own product · iOS and Android

Prend

Loan tracking app on the App Store and Google Play: due dates, reminders and reputation points. Native on both platforms, SwiftUI on iOS and Kotlin with Jetpack Compose on Android, one Firebase backend, and a site that sends shared invite links to the right store.

SwiftSwiftUIKotlinJetpack Compose
2M CLPin sales, first month
  • iOS
  • Web
  • Backend
Retail · Santiago

Saronna

Inventory app for iOS and an online store for a retail client, sharing one catalog in real time. Inventory, sales, expenses and losses for more than 100 SKUs, offline first. Over 2M CLP in sales the first month.

SwiftSwiftUISwift DataFirebase
200+bookings
  • iOS
  • Web
  • Backend
School fundraiser · Santiago

Cuarto Detonao

Reservation system for a school fundraiser selling roses with personal dedications: a booking site, an iOS app for the class committee and a Node and PostgreSQL backend. Over 200 reservations handled live.

SwiftSwiftUIAstroTypeScript
  • iOS
  • Open source

Bubble

Messaging app in Swift 6 and SwiftUI, built with a team spread across Discord under SCRUM. Real time chat with Firebase Firestore.

SwiftSwiftUIFirebase
  • iOS
  • Open source

Proyecto Dragon Ball Swift

Open source iOS app built on a Dragon Ball API. My part is the sync between devices: Google Sign-In, favourites in Firebase Firestore and local persistence with SwiftData.

SwiftSwiftUISwift DataFirebase
ArchiveOlder and side projects3
Experience

Where I’ve worked

Remote on an international team, freelance for clients in Santiago and solo on my own products. Open to full-time roles, remote or in Santiago.

Download CVLinkedIn

Experience

  1. Feb 2025 / Mar 2026

    iOS Developer (iPad)

    Etnia Barcelona · via Baufest & SlashMobility · Barcelona · Remote

    13 months on the same product, first through Baufest and then through SlashMobility. A team of six iOS developers, Scrum and Kanban, sprint planning, dailies and code review. I built the internal app for the international sales team in SwiftUI, Combine and Core Data, designed to work with no connection. I cut redundant clicks in the order flow by 40% by streamlining flows and fixing critical bugs, and reworked the customer tables so more useful data fits on screen. Later I led the modernization phase and contributed to migrating persistence from Core Data to SwiftData without interrupting reps in Europe, the U.S. and Canada.

    SwiftSwiftUICombineCore DataSwift Data
  2. Nov 2025 / Present

    iOS & Web Developer

    Saronna · Freelance · Santiago, Chile

    The client was running her shop on spreadsheets. I built her an internal iOS app in SwiftUI and SwiftData, with Clean Architecture, for inventory, sales, expenses, losses and batches across more than 100 SKUs, plus the online store in Astro on Vercel. Both sides share the same catalog through Firestore in real time, and stock moves inside atomic transactions so nothing gets sold twice. She passed 2M CLP in monthly sales during the first month.

    SwiftSwiftUISwiftDataFirebaseAstroTypeScript
  3. Mar 2025 / Present

    Full Stack Developer · Founder

    Tatakae · Personal · Santiago, Chile

    My own fitness app, built from scratch and published on the App Store, made to train without touching the phone. A coach guides you through programs and your own routines and tells you what comes next, a gesture starts or stops each set, and the camera detects the exercise and counts reps with Vision and CoreML, and Apple Foundation Models analyze progress on the device itself. When I added friends and rankings I also built the backend, which started as my capstone project for Globant's Talento Ready Java program: a REST API in Java and Spring Boot on PostgreSQL, with hexagonal architecture, Sign in with Apple, live events over SSE and APNs pushes. It is deployed with Docker.

    SwiftSwiftUICoreMLJavaSpring BootPostgreSQLDocker
  4. Oct 2024 / Nov 2024

    Full Stack Developer

    Reserva Rosas Colegio · Freelance · Santiago, Chile

    The whole system: web in Astro, backend in Node and Express with PostgreSQL on Supabase, and an iOS app in SwiftUI. More than 200 reservations went through it.

    SwiftSwiftUIAstroNode.jsPostgreSQLSupabase
  5. May 2023 / Present

    Mobile Developer · Founder

    Prend · Freelance · Santiago, Chile

    I saw the need and built Prend, an app for personal loans. After passing 1,000 downloads on iOS I built the Android version too, on my own and fully native. Swift and SwiftUI on iOS, Kotlin and Jetpack Compose on Android, one Firebase backend with Cloud Functions, and subscriptions synced across stores. It is live on the App Store and Google Play, where it passed 200 downloads in its first month.

    SwiftSwiftUIKotlinJetpack ComposeFirebaseStoreKitPush Notifications
Portrait of Jacob Aguilar
About

Hi, I’m Jacob

I care more about the problem than the technology. Almost every app I’ve built came from someone with a messy process: a sales rep taking orders with no signal, a shop writing stock down on paper, me trying to remember who I’d lent money to.

I know how to work on a team and I know how to work alone, which isn’t the same thing. At Etnia there were six iOS devs, code reviews and sprints. On Prend and Tatakae there’s nobody else to blame.

Right now I’m deep in Java and backend, because I love learning new things.

Outside work: inline skating, gym and calisthenics, which is exactly where Tatakae came from.

5+
Years with Swift
2
Published apps
14
Projects built
ES·EN·PT·JP
Languages
Contact

Let’s talk

Hiring for an iOS role, or want to see more of what I’ve built? Write to me and I’ll get back to you.

  • Emailaguilar.campos.jacob@gmail.com

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