Senior iOS Developer


With our AI-based guitar learning app Fretello, we empower people to express themselves through music. This experience can look different for every user as our learning content is customizable and adapted to the experience level. Our app not only allows our users to learn, practice, and play the guitar, Fretello provides real-time feedback and enables our users to follow a learn path, choose customizable practice sessions, or learn how to play their favorite songs to perform them in front of their friends and family or even on a big stage. Founded in 2016 by Florian Lettner and Wolfgang Damm, we have ever since grown into a warm-hearted and passionate bunch of 25+ people. Not only do we strive for simplicity and iterative improvements when it comes to our app but also in the way we are working together. Our team collaborates remotely from all corners of the world or on-site in our office facilities in Linz to offer the best possible music learning experience to our users. In addition to being passionate about our product, we Fretellians value transparency, flexibility, curiosity, ownership, and foster an appreciative team environment where we support and push each other. If you identify with our values and passion and want to join the Fretello stage, we’d be thrilled to learn what makes you a good fit for our diverse team. Have a look at our open positions at to learn more about us and to send us your job-relevant application documents. The Stage is (Y)Ours!

We are looking for a passionate Senior iOS Developer to join our cross-functional product team. Together we will create features that bring great value to our users and have a long-lasting impact on them and their joyful learning experience.

Your playground:

Building and improving our Fretello iOS app

Defining architecture and common practices to increase development and deployment speed

Writing code that is easy to read, maintain, test, and follows proven practices

Creating adaptable UIs using Auto Layout or SwiftUI for iPhone, iPad, and Mac

Working in a cross-functional team, helping to actively shape our product’s future

Putting in that little extra with every commit to deliver an outstanding app

What to bring along:

At least 4 years of practical experience with developing iOS apps

Excellent command of Swift and expert knowledge of iOS frameworks

Experience with functional reactive programming

In-depth experience with different architectures for iOS apps (e.g. MVC, MVVM)

Knowledge about effective Xcode usage and how to debug different kinds of errors

Experience with continuous integration and delivery as well as test-driven development

Experience with audio frameworks on iOS and basic knowledge of C++ and/or JavaScript is a plus

Proactive self-starter with a positive mindset, a desire to learn, and a strong sense of ownership

Be based within 3 hours (+ or -) from CET

Our tech stack:

Mobile Languages: Swift, Kotlin, JavaScript, C++

iOS Frameworks: mix of SwiftUI/UIKit and Combine/RxSwift

IDEs: XCode, Android Studio

Cloud: Amazon AWS

Frontend, Backend & DB: React, Express, Node.js, Postgres

Design: Figma

Testing: XCTest/XCUITest, Espresso, MockK,

Deployment: Fastlane, Bitrise, Bitbucket Pipeline, Firebase App Distribution

Machine Learning: Python, Tensorflow, Keras, powerful on-premise hardware

What we offer:

Personal time off (25 days paid leave per year)

Flexible working hours (core hours 10:00 to 14:00)

38.5 hour work-week (overtime compensated as time-off 1:1)

Remote first work setup and mindset

A small team (25-30) with lots of individual impact and responsibility

Fun, relaxed, and regular remote team events and onsite team retreats

Shared and lived values: Agility, Curiosity, Unity, Transparency, and Empathy

An emphasis on continuous learning and growth

Mental wellbeing initiatives such as Mindfulness Wednesdays and optional paid external therapy sessions

Your contact: Stephanie (Süllwald) Truter (Talent Scout)

Our salary range starts at an annual compensation of EUR 46.000 to a maximum of EUR 60.000. Your actual offer will depend on your skills and experience.

Work from
over 2 years ago