Who we are

The role 

Collaborating closely with our dynamic team of product designers and engineers, you will play a pivotal role in shaping the foundation of frontend at Helsing. Embracing a hands-on approach, you'll not only lead by example, but also spearhead the development and expansion of a tight-knit team that works across a wide-range of internal teams and products. Your primary emphasis will be on enhancing usability, creating re-usable foundations for multiple front-ends and optimising the end-user experience across the entire company.

The day-to-day

• Review code contributions, proposals, and RFCs from colleagues. At Helsing we strongly believe that unblocking others takes precedence over spending more time on your own work.

• Own the user interface end-to-end, from early wireframes and prototypes through to performant, production-ready code. You'll work closely with product and UX colleagues to shape how users interact with our tools. We have relatively few frontend engineers at Helsing; this means that we operate at a high level of autonomy and there are plenty of opportunities for impactful work.

• Propose and implement new features, capabilities, tooling, visualizations, or even full products across our stack. We encourage our engineers to look beyond their immediate team for missed opportunities, and to speak up when they identify one.

• Establish and evolve our React component library, ensuring consistency, reusability, and alignment with our visual design standards across multiple front-ends.

• Collaborate with others beyond your team and share knowledge with the wider frontend community at Helsing. Contribute to establishing our frontend engineering standards. Build or adopt tools that help enforce these standards, or make our frontend engineers more efficient in a different way.

• Become a mentor, find a mentee, and help support and develop our interviewing pipeline. The people make or break the company, and we want as many engineers as possible to be part of fostering and growing the organisation.

• Share your experience and technical know-how with other Helsingers. We host tech talks, get together for smaller "let's learn together" groups, run topical office hours or reading groups (e.g., on React or TypeScript), etc. to help each other get better with time.

• Connect with, understand, and make changes to backend systems as needed. Our backends are primarily written in Rust, and you'll need to be comfortable navigating unfamiliar codebases to unblock yourself and improve integrations. Rust experience is not a prerequisite to this role, though - you can learn that over time as needed.

• Present your work at our weekly demo sessions. We want engineers to come together around what they are working on and to feel like they are not endlessly squirrelling away at something that doesn't matter. To that end, we host (and actively work towards) demo sessions that allow early feedback, celebration of progress, and a better shared understanding of everything that goes on at Helsing.

You should apply if you

• Can write legible, maintainable, and performant frontend code - ideally using TypeScript and React.

• Are experienced with APIs and server-client communication like REST and GraphQL.

• Have experience with running a live production software.

• Are passionate about staying on top of current development best practices, libraries and frameworks.

• Are comfortable working with unfamiliar backends, ideally with some exposure to languages like Rust.

• Communicate well in English, both verbally and in writing.

• Enjoy collaborating with others, including reviewing code and pair programming.

• Are comfortable working asynchronously (writing PRs and RFCs, having discussions by email).

• Strive to improve yourself, your peers, and the culture you work in over time.

• Feel like ethical considerations are an inherent part of engineering.

Note: We operate at an intersection where women, as well as other minority groups, are systematically under-represented. We encourage you to apply even if you don’t meet all the listed qualifications; ability and impact cannot be summarised in a few bullet points.

Join Helsing and work with world-leading experts in their fields 

• Helsing’s work is important. You’ll be directly contributing to the protection of democratic countries while balancing both ethical and geopolitical concerns

• The work is unique. We operate in a domain that has highly unusual technical requirements and constraints, and where robustness, safety, and ethical considerations are vital. You will face unique Engineering and AI challenges that make a meaningful impact in the world

• Our work frequently takes us right up to the state of the art in technical innovation, be it reinforcement learning, distributed systems, generative AI, or deployment infrastructure. The defence industry is entering the most exciting phase of the technological development curve. Advances in our field of world are not incremental: Helsing is part of, and often leading, historic leaps forward

• In our domain, success is a matter of order-of-magnitude improvements and novel capabilities. This means we take bets, aim high, and focus on big opportunities. Despite being a relatively young company, Helsing has already been selected for multiple significant government contracts

• We actively encourage healthy, proactive, and diverse debate internally about what we do and how we choose to do it. Teams and individual engineers are trusted (and encouraged) to practise responsible autonomy and critical thinking, and to focus on outcomes, not conformity. At Helsing you will have a say in how we (and you!) work, the opportunity to engage on what does and doesn’t work, and to take ownership of aspects of our culture that you care deeply about

Nice to have

• Significant recent experience with React.

• Familiarity with backend interface tools like REST, GraphQL, gRPC/Protocol Buffers.

• Established understanding of modern JS bundlers, such as Vite, and experience maintaining frontend infrastructure.

• Experience with styling utility-class libraries such as TailwindCSS and building reusable React component libraries.

• Data visualization expertise (e.g., D3.js, custom charting, or complex dashboard design).

• Background in designing software for aerospace, defense, or AI end users.

What we offer

• A focus on outcomes, not time-tracking

• Competitive compensation and VSOP options

• Relocation support

• Social and education allowances

• Regular company events and all-hands to bring together employees as one team across Europe

• A hands-on onboarding program (affectionately labelled “Infraduction”), in which you will be building tooling and applications to be used across the company. This is your opportunity to learn our tech stack, explore the company, and learn how we get things done - all whilst working with other engineering teams from day one 

Helsing is an equal opportunities employer. We are committed to equal employment opportunity regardless of race, religion, sexual orientation, age, marital status, disability or gender identity. Please do not submit personal data revealing racial or ethnic origin, political opinions, religious or philosophical beliefs, trade union membership, data concerning your health, or data concerning your sexual orientation.

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!

Are you a Frontend Software Engineer with a keen interest in everything Web3 and how this can be applied to iGaming? Then this is the role for you! We are looking for a Software Engineer to help us in the beginning of our journey to bring new and innovative iGaming products and brands to the market, leveraging the exciting possibilities provided by Web3 concepts and technologies. 

About the Team

You'll be joining a new team at the start of an ambitious journey - bringing innovative iGaming products and brands to market by leveraging the possibilities opened up by Web3 technologies. This is greenfield work: small team, big ambitions, real users. 

What You'll Do

• Design, build, and ship user-facing features across our Web3 iGaming products, working from concept through to production. 

• Partner with product managers, designers, and backend engineers to translate ambiguous problems into clear, high-quality user experiences. 

• Participate in the full development lifecycle - sprint planning, estimation, code review, testing, deployment, and post-launch iteration. 

• Help establish the engineering patterns, tooling, and conventions that a growing team will rely on. 

What we are looking for

• 2+ years of professional experience as a Frontend Engineer. 

• Strong command of TypeScript and JavaScript, and comfort working in at least one major framework (React, Vue, or Angular). 

• Solid fundamentals in HTML, CSS, and a preprocessor like Sass or LESS. 

• Experience integrating with RESTful APIs and reasoning about client–server contracts. 

• A track record of writing meaningful unit and integration tests (Playwright, Jest or similar). 

• Familiarity with modern JavaScript tooling and bundlers (Vite, Rollup, etc.). 
  
  
• An eye for performance and an instinct for what makes a web application feel scalable rather than just work at scale. 
  
  
• Product thinking and a can-do attitude - you care about why something is being built, not just how, and you keep momentum when the path isn't obvious. 

Bonus Points 

• Experience with native Web Components (e.g. Stencil.js). 

• Genuine interest in or hands-on exposure to Web3 - wallets, on-chain interactions, smart contract integration, or related tooling. 

• Background in iGaming, fintech, or other regulated, high-traffic consumer domains. 

What we offer

Much like riding a rollercoaster, sometimes life at Betsson can be lightning fast with twists and turns but always FUN! Then again, what else would you expect from a business 75% millennial and 1700 strong, spread across 7 offices with 900 based out of our Malta HQ alone! We recognise it may not be for the faint-hearted, but if you’re a go-getter, initiator and adrenaline junkie, always striving to push the boundaries and challenge yourself, then you’ll fit right in.

Challenge accepted?

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Senior Software Engineer (Full-Stack) 

Who We Are and What We Do  

At SilverRail, we're on a mission to reshape the way the world travels, and we're inviting you to be part of this journey. Rail is becoming the go-to choice for short and medium-haul travel worldwide, and we're here to help make it happen. 

In the face of the ongoing climate crisis, our vision is crystal clear. We are transforming the online customer experience for rail travel, making it easier than ever for customers to find, buy and use rail. Our cutting-edge technology is the backbone of rail and travel agencies worldwide, making it effortless for travellers to choose the eco-friendly option and reduce their carbon footprint.  

We have over 15 years of trailblazing success behind us, and our teams are spread across the globe, with bases in London, Boston, Brisbane, and Stockholm. We thrive on the philosophy of 'fail-fast-fail-early,' which drives us to find ingenious solutions to complex challenges. 

Join us, and help shape the future of travel! 

The Role  

As a Senior Full-Stack Software Engineer, you will play a key role in designing, building, and maintaining high-quality software solutions that support our evolving platform. Our team in Stockholm build products that are used by multiple API customers and travel agencies, enabling easy, accessible and frictionless rail ticketing across Europe. 
 
Working closely and cross-functionally, you will help translate business requirements into scalable, reliable technical solutions. You will contribute across the full development lifecycle, from requirements analysis and system design through implementation, testing, deployment, and ongoing optimization, all while applying best practices in code quality, maintainability, and performance. 
 

You will work in a collaborative Agile environment, actively participating in Sprint planning, backlog refinement, daily stand-ups, reviews, and retrospectives. As a senior member of the team, you will bring strong technical expertise and a passion for clean, maintainable code while contributing to architectural discussions, mentoring teammates, and continuously improving engineering practices. You will help ensure that new features meet the Definition of Done and that each Sprint delivers meaningful, high-quality value. 

Key Responsibilities  

• Analyse requirements and translate functional specifications into well-designed, scalable software components. 

• Design, implement, and maintain application features, contributing to both backend and frontend solutions. 

• Write clean, readable, and maintainable code that follows established engineering standards and best practices. 

• Develop and maintain comprehensive unit and integration tests to ensure reliability and maintain strong test coverage. 

• Produce and maintain clear technical documentation to support maintainability and knowledge sharing. 

• Design, implement and evolve REST and SOAP APIs to support internal services and external integrations. 

• Build and maintain modular, testable Spring/Java-based middleware applications that align with architectural standards. 

• Contribute to the design and architecture of applications and services, helping evaluate technical solutions and trade-offs. 

• Collaborate with cross-functional team members, including Product Managers, QA, Tech Ops and Platform Engineering, to deliver high-quality features within each Sprint. 

• Participate in Agile ceremonies, code reviews, and continuous improvement initiatives to ensure features meet the Definition of Done and engineering standards.   

Required Competence and Skills 

• Strong knowledge and experience with Java 17+, Spring and Spring Boot frameworks. 

• Experience running microservices in the cloud, specifically with AWS, Docker and Kubernetes. 

• Experience of Hibernate and relational databases including MySQL.    

• Experience building JSON and XML based APIs. 

• Strong knowledge of RESTful principles.  

• Experience with UI technologies including JavaScript/TypeScript 

• Experience with UI frameworks including React.JS 

• Experience working in an Agile (Scrum) environment. 

• Familiarity with design patterns, SOLID and TDD 

• Experience using Git/GitLab managing CI/CD pipelines. 

• Minimum 5 years of hands-on work experience.   

• BSc in Computer Science or equivalent experience. 

• Fluent in English both written and spoken. 

• Strong analytical and problem-solving capabilities. 

• Comfortable working in a fast-paced environment while finding solutions to complex challenges. 

Why us?  

• We utilise a hybrid working model, providing equipment for home working so you can work 2-3 days per week at home and 2-3 days per week in our beautiful central Stockholm office.  

• We are part of the Tech Sverige and Almega organisations offering a strong collective working agreement. 

• We provide a wealth of career development opportunities with training that is individual, focused on improving your skills and helping you become the best professional you can be.  

• Our team’s health and wellness is genuinely important to us, so we provide a generous annual Wellbeing Allowance for you to use. 

• A unique opportunity to work for a tech company that is helping the environment by revolutionising the way we travel.  

Our values are simple: Do Good by working for a better tomorrow; Think Big Act Smart by being curious, adaptable and data-driven; and remember that through collaboration we will always be Stronger Together.  

*We are a neurodiverse employer and are working hard to improve our recruitment processes, so if there is any way that we can make the recruitment experience better for you then please let us know in your application - all information will be treated as strictly confidential*  

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