Why Valtech? We’re the experience innovation company - a trusted partner to the world’s most recognized brands. To our people we offer growth opportunities, a values-driven culture, international careers and the chance to shape the future of experience. 

The opportunity

At Valtech, you’ll find an environment designed for continuous learning, meaningful impact, and professional growth. Whether you're pioneering new digital solutions, challenging conventional thinking or building the next generation of customer experiences, your work will help transform industries. 

We are proud of: 

• The work we do and the innovation we drive 
• Our values of share, care and dare 
• A workplace culture that fosters creativity, diversity and autonomy 
• Our borderless, global framework, which enables seamless collaboration 

The role  

Valtech is looking for a Senior Mobile App Developer with 6+ years of experience, who is confident developing native mobile applications for both iOS and Android.

This role is for someone who takes mobile development seriously—not just individual platforms, but the craft of building high‑quality mobile products as a whole. You care deeply about performance, architecture and long‑term maintainability, and you have strong opinions on how mobile apps should be built, backed by hands‑on experience across platforms. You are comfortable using AI‑powered tools responsibly to support development, improve code quality, and increase efficiency across the mobile development lifecycle.

We are looking for a senior app developer who drives work proactively, collaborates closely with clients, product, and design teams, and confidently owns technical decisions across both iOS and Android. 

We are first and foremost looking for a senior native app developer. In addition, we highly value T‑shaped profiles who bring depth in app development combined with strength or interest in adjacent areas. 

Role responsibilities

• Development of native applications (no React Native)
• Primary focus on iOS, with solid understanding and experience in Android
• Drive app development, technical decisions, and new ideas
• Act in a proactive, advisory role towards the client
• Represent Valtech in the day-to-day collaboration
• Close collaboration within a senior, cross-functional team

Must have qualifications

To be considered for this role, you must meet the following essential qualifications: 

• iOS
  • Swift
  • SwiftUI, UIKit
  • CocoaPods, Swift Package Manager (SPM)
  • Xcode
  • MVVM
  • The Composable Architecture (TCA)

• Android
• • Kotlin, Java
  • Jetpack Compose
  • Android Studio

• Fluent in Swedish and English

Nice to have qualifications  

• Git
• Fastlane
• Firebase & Crashlytics
• REST / Networking (e.g. Alamofire)
• Database management (GRDB, Core Data)
• Authentication & security (MSAL, Auth0)
• Third-party integrations (Google ML Kit, Adyen, Contentful, Usercentrics)
• Unit testing & UI testing
• Publishing and management via App Store Connect & Google Play Console
• Beta testing (TestFlight, Apple Business Manager, Google Play Testing Tracks)
• You have a solid understanding of UX/UI design for mobile apps and can work according to each platform’s design principles when developing new features:
  • iOS: Cupertino / Liquid Glass
  • Android: Material Design

If you do not meet all the listed qualifications or have gaps in your experience, we still encourage you to apply. At Valtech, we recognize that talent comes in many forms, and we value diverse perspectives and a willingness to learn. 

Commitment to reaching all kinds of people 

We design experiences that work for all kinds of people - and that starts with our own teams. At Valtech, we’re intentional about building an inclusive culture where everyone feels supported to grow, thrive and achieve their goals. No matter your background, you belong here. Explore our Diversity & Inclusion site to see how we’re creating a more equitable Valtech for all. 

The benefits  

This is a full time position based in Stockholm, Sweden, with hybrid working model (at least 2-3 days work from our Stockholm office). 

Beyond a competitive compensation package, we offer: 

• Flexibility, with remote and hybrid work options (country-dependent) 
• Career advancement, with international mobility and professional development programs 
• Learning and development, with access to cutting-edge tools, training and industry experts 

Our benefits are tailored to each location. Your Talent Partner will provide full details during the hiring process. 

Your application process

Once you apply, our Talent Acquisition team will review your application. Your CV should cover key information on relevant experiences and expertise. We do not require information such as age, gender, marital status, or a headshot in your application. We review all candidates based on skills, experience, and potential.

⚠️ Beware of recruitment fraud!

We are committed to inclusion and accessibility. If you need reasonable accommodations during the interview process, please either indicate it in your application or let your Talent Partner know. 

About Valtech

Valtech is the experience innovation company that exists to unlock a better way to experience the world. By blending crafts, categories, and cultures, we help brands unlock new value in an increasingly digital world. 

At the intersection of data, AI, creativity, and technology, we drive transformation for leading organizations, including L’Oréal, Mars, Audi, P&G, Volkswagen Dolby, and more. 

At Valtech, we don’t just talk about transformation. We make it happen. Our people are the heart of our success, and we foster a workplace where everyone has the support to thrive, grow and innovate. 

Are you ready to create what’s next? Join us!

About Tzeract

Tzeract is changing the way we bet on sports. As Kambi’s in-house startup, we've built a completely new platform from the ground up - with our own AI at the core, not just as an add-on. Today we already handle over 500 millions bets in distributed systems with a low latency, and your work will be scaled globally from day one.

We iterate quickly, decide fast, and your calendar stays free for the work that matters. This gives you time for coffee breaks, test ideas and solve problems together. In this role, you’ll help shape both the product and parts of the architecture. It’s the combination of startup freedom with an enterprise touch - and your contributions will be visible and felt by millions of users worldwide.

Role Overview

 We’re looking for a Fullstack Developer with a strong front-end focus to help us continue to build and innovate our market-leading sports trading tool.

This role sits at the intersection of product, trading expertise, and platform engineering. You’ll work closely with our Product Owner, sports trading experts, and platform team to design and deliver intuitive, high-performance user interfaces for complex, real-time trading workflows.

Your primary focus will be front-end development using React, supported by Node.js and Python services. You’ll also collaborate closely with teams building backend services written in Python and Rust, all deployed on AWS with a strong preference for serverless architectures.

If you enjoy turning complex, data-heavy systems into elegant user experiences — and thrive in a collaborative, fast-moving startup environment — this role is for you.

 What you’ll do

• Design, develop, and maintain modern front-end applications using React and MUI X, with a strong focus on usability, performance, and reliability.
• Build and maintain front-end–facing services using Node.js and Python.
• Collaborate closely with Product Owners and sports trading experts to translate complex domain requirements into intuitive user experiences.
• Work alongside backend engineers developing services in Python and Rust to integrate real-time data and trading logic.
• Contribute to cloud-native solutions on AWS, with a preference for serverless designs.
• Participate in architectural discussions across the full stack and help shape front-end standards and best practices.
• Improve developer experience through testing, CI/CD, and shared tooling.
• Continuously evolve the sports trading platform as product and business needs grow.

What we believe you have

• Strong experience building front-end applications with React (experience with MUI / MUI X or similar libraries is a big plus).
• Solid understanding of fullstack development, including APIs and service integration.
• Experience with Node.js and Python in a production environment.
• Exposure to or interest in backend systems written in Python and/or Rust.
• Experience working with AWS and cloud-native architectures (serverless experience is a plus).
• Familiarity with modern software engineering practices such as automated testing, CI/CD, and version control.
• A collaborative mindset and comfort working closely with product managers and domain experts.
• Enjoyment of a fast-paced startup environment where priorities evolve.

#wearekambi