Suggested rewrite: Led a cross-functional initiative that improved [business outcome] by [measurable result], demonstrating experience relevant to this role...
iOS Software Engineer
- Remote from
- Germany
- Salary
- EUR 57k–76k / yr
- Department
- Software Engineering
- Employment
- Full Time
- Experience
- Open level
- Published
- Apply before
- 5 Dec 2026
- Listing views
- 30
- Application actions
- 2
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About this role.
Why Mozilla?
Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we’re doing this while never losing our focus on our core mission – to make the internet better for people.
The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms.
About this team and role:
Mozilla seeks to build a work environment that values and makes space for our employees, partners, and the broader community to bring their vast experiences to our mission – to improve the internet. Being inclusive and transparent for the betterment of humankind is at the core of our values.
A healthy and inclusive internet starts with the tools we use to access and discover the Web. On iOS, we start by developing applications that give people a choice in their browser to experience the Web in an open, safe and healthy environment. Promoting transparency, innovation, inclusion and opportunity from every angle for mobile is at our core.
If you are an iOS Engineer and you want to work for a company that builds products for everyone, join our team!
What you’ll do:
- Design, write, and maintain the code for sophisticated mobile applications on iOS, ensuring they meet our high standards for quality and user experience
- Work alongside a diverse and geographically distributed team
- Uphold our commitment to quality by conducting through code reviews, fixing bugs, and writing tests to ensure application stability and performance.
- Collaborate with the team in building new features that enhance user engagement and contribute to the application’s growth while working closely with Product Managers
- Engage in crafting experiments to understand user interactions better and contribute ideas for product improvements.
What you’ll bring:
- 2+ years of experience in the software engineering space
- Experience building and shipping native iOS/iPadOS applications using Swift. Strong interest in modern iOS development practices, including SwiftUI and architectural patterns like MVVM
- A passion for identifying and resolving bugs, with proficiency in code reviews, unit testing, and automation to ensure high quality, maintainable code.
- Effectively operate in a distributed team setting, demonstrating excellent communication skills
- Work transparently as part of the Mozilla open-source project, interacting with Mozilla’s global community to support our mission and contribute to a healthier internet.
- Commitment to our values:
- Welcoming differences
- Being relationship-minded
- Practicing responsible participation
- Having grit
What you’ll get:
- Generous performance-based bonus plans to all regular employees – we share in our success as one team
- Rich medical, dental, and vision coverage
- Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)
- Quarterly all-company wellness days where everyone takes a pause together
- Country specific holidays plus a day off for your birthday
- One-time home office stipend
- Annual professional development budget
- Quarterly well-being stipend
- Considerable paid parental leave
- Employee referral bonus program
- Other benefits (life/AD&D, disability, EAP, etc. – varies by country)
About Mozilla
Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.
Commitment to diversity, equity, inclusion, and belonging
Mozilla understands that valuing diverse creative practices and forms of knowledge are crucial to and enrich the company’s core mission. We encourage applications from everyone, including members of all equity-seeking communities, such as (but certainly not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientations, gender identities, and expressions.
We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us at hiringaccommodation@mozilla.com to request accommodation.
We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws. Mozilla will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.
Group: E
#LI-REMOTE
Req ID: R3261
Hiring Ranges:
Remote Germany
€57.000—€76.000 EUR
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Sample interview questions
I separate view rendering from business and presentation logic by keeping state and transformations in view models. Views bind to observable state, while services and repositories are injected behind protocols, which makes the code easier to test and evolve.
I define acceptance criteria, add unit tests for business logic, validate edge cases, and test the feature on relevant devices and OS versions. I also request code review, monitor crash or performance signals after release, and address regressions promptly.
I first reproduced the issue reliably, then used logs, breakpoints, and Instruments where appropriate to isolate the failing path. After identifying the root cause, I implemented a focused fix, added regression coverage, and documented any relevant lessons for the team.
I would begin with isolated, low-risk screens or reusable components and integrate them through UIHostingController where needed. This allows the team to gain experience incrementally while preserving stable UIKit flows and establishing shared architecture and testing conventions.
I communicate decisions and progress clearly in written channels, document technical context, and raise risks early. I also make code reviews actionable, respect time-zone differences, and use regular planning and feedback loops to stay aligned with product and engineering partners.
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