Senior Mobile Engineer

Zwift; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Zwift seeks a Senior Mobile Engineer for its Connected Products team in a hybrid London setting. You will own mobile code across Java, Kotlin, and cross‑platform technologies, connecting Zwift peripherals and third‑party devices while collaborating with product and partner teams.

You’ll design reusable code, participate in reviews, and help define technical strategy to keep the Zwift ecosystem reliable and performant for users worldwide.

Qualifications

• 5+ years of experience as a Mobile Engineer.
• Strong knowledge of Java/Kotlin and Swift/Objective-C.
• Experience with Kotlin Multiplatform and Compose Multiplatform.
• Familiarity with RESTful APIs and mobile UI patterns.

Responsibilities

• Design, build, and maintain high-performance mobile code across platforms.
• Collaborate with cross-functional teams and participate in code reviews.
• Advise on capabilities and constraints of mobile systems.
• Contribute to technical planning and strategy.

Skills

Mobile Engineer

Java/Kotlin

Cross-platform

REST APIs

UI/UX

Collaboration

Technical trade-offs

Tools

Kotlin Multiplatform

Compose Multiplatform

Native + KMP

Bluetooth Protocols

gRPC/Protobuf

Android Open Source

CI/CD

Job description

Location: Hybrid- London, England

About the role and about You:

Zwift is looking for a Senior Mobile Engineer for our Connected Products team. On the Connected Products team, we build Zwift hardware and own the end-to-end software to ensure that Zwifters can easily and reliably connect their peripherals to the Zwift Game. This includes connecting Zwift peripherals (Zwift Play, Zwift Ride, Zwift Hub, Zwift Click) or third-party peripherals (trainer, power sensor, cadence sensor, heart rate monitor, etc). You will dive deep into our Zwift Companion App mobile code base as well as our cross platform game code and you’ll work closely with engineers across partner teams to define and deliver on an iterative technical strategy for how we achieve our team vision - Zwift just works, all the time, for everyone.

While this is a flexible/in office as needed position, we’re looking for candidates who are within commuting distance of our London office (London Bridge area) to facilitate semi-regular in-person connections with other “Watopians” (a.k.a., Zwift employees) in the London area.

We place a high value on flexibility, transparency, and fun while supporting our team to do their best work.

What you’ll do:

• Design, build, and maintain high-performance, reusable, and reliable code across Java, Kotlin, Objective-C, Swift, programming languages
• Partner with other engineers through code reviews, technical discussions, and pair programming
• Partner with product and engineering leadership, advising them on the capabilities and constraints of systems and approaches. You’ll push your team, peers, and leadership to take action and solve challenging problems.
• Take part in your team’s technical planning

What we’re looking for:

• 5+ years of experience as a Mobile Engineer
• Working knowledge of Java, Kotlin, C++, Swift, Objective-C
• Proficiency in Kotlin Multiplatform and Compose Multiplatform, and experience contributing to a shared Native + KMP solution.
• Familiarity with RESTful APIs to connect mobile applications to back-end services
• Strong knowledge of mobile UI design principles, patterns, and best practices
• Track record of facilitating effective collaboration among cross-functional partners, involving others in making decisions on behalf of the group
• Demonstrated ability to make technical trade-offs considering both long-term and short-term impact.

Bonus points:

• Expertise specifically with Bluetooth or similar communication protocols.
• Experience with Android Open Source Project
• Experience with backend services development
• Knowledge of gRPC and Protobuf.
• Passionate about the fitness, wellness or gaming space.
• Experience working with geographically distributed teams

If Zwift determines in any stage of our interviews that any AI tools are being used without disclosure or citation, your candidacy will be disqualified.

We strongly believe that different backgrounds and ideas are a competitive advantage; we hire candidates of any race, color, ancestry, religion, sex, national origin, sexual orientation, gender identity, age, marital or family status, disability, Veteran status, and any other status. Zwift is proud to be an Equal Opportunity Employer. If you have a disability or special need that requires accommodation, please let us know by emailing [e-mail].

Zwift, Inc. is an Equal Opportunity Employer.