Mobile Software Engineer (SDK) (f/m/d) at justtrack

✨ The Stack take on this justtrack job

• 🏢 This is justtrack's only job here right now
• 🛂 Visa: EU Blue Card. Minimum salary: €50,700 a year guide
• 💡 No salary shown. Ask justtrack if it is above the minimum.

Updated 2026-11-05, from our data and official sources.

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About the role

Responsibilities:
- Build and maintain the justtrack SDK across mobile and web platforms with a primary focus on iOS.
- Write clean, maintainable, and well-tested code; leverage AI assistance to improve efficiency.
- Design and maintain CI/CD pipelines to ship SDK releases reliably.
- Understand system interactions (backend, integrations) and design robust, efficient SDK APIs.
- Produce clear SDK documentation, samples, and open-source artifacts for external developers.
- Provide client support for integrations, triage issues, and implement improvements to the developer experience.

Requirements:
- 3+ years of software engineering experience, preferably in mobile or SDK development.
- Strong knowledge of one or more: Kotlin, Swift, JavaScript/TypeScript, C#, or Go.
- Experience building and optimizing CI/CD and automation for releases.
- Comfortable with terminal, networking basics, HTTP clients, DBMS and common IDEs.
- Pragmatic problem-solver with a business-minded approach and a focus on developer UX.
- Willingness to learn new technologies and to work on cross-platform integration challenges.

Responsibilities

Develop and maintain the justtrack SDK across mobile and web platforms with a primary focus on iOS. Ensure a high-quality developer experience through efficient code, clear documentation, and direct client support for integration.

Requirements

Requires 3+ years of software engineering experience, preferably in mobile development using languages like Swift, Kotlin, or TypeScript. Candidates should be proficient in CI/CD automation and possess a pragmatic, business-oriented mindset.

Key skills

• iOS Development — in 20 other listings on The Stack
• Kotlin — in 251 other listings on The Stack
• Swift — in 41 other listings on The Stack
• JavaScript — in 141 other listings on The Stack
• TypeScript — in 467 other listings on The Stack
• C# — in 49 other listings on The Stack
• Go — in 230 other listings on The Stack
• CI/CD Pipelines — in 53 other listings on The Stack
• SDK Development
• Clean Code
• Networking Basics
• API Integration
• Android Development
• React Native
• Flutter
• Unity

On The Stack (as of 2026-11-05)

• This is justtrack's only listing on The Stack.
• 166 visa-sponsored jobs in Germany on The Stack, posted in the last 60 days.
• 195 visa-sponsored software engineer jobs in Europe on The Stack, posted in the last 60 days.

Frequently asked questions about justtrack

Is this Mobile Software Engineer (SDK) (f/m/d) role still open?

It was posted on 2026-05-29. Listings more than 30 days old may no longer be active, so check justtrack's site before applying.

Does justtrack offer visa sponsorship?

This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on justtrack's site.

Where is this role located?

The listing gives the location as Hamburg, Germany. It is marked on-site.

What skills does this role ask for?

The listing names: iOS Development, Kotlin, Swift, JavaScript, TypeScript, C#, Go, CI/CD Pipelines, SDK Development, Clean Code, Networking Basics, API Integration, Android Development, React Native, Flutter, Unity.