Clario, part of Thermo Fisher Scientific is seeking a Lead Mobile Application Engineer (.NET MAUI / Xamarin) to provide technical leadership in the design, development, and evolution of the Clario App—our core mobile platform used by patients and clinical research sites across global clinical trials. This platform plays a critical role in how patients engage with research, enabling reliable data collection, improving compliance, and supporting a high‑quality trial experience.
In this role, you will lead the development of robust, scalable mobile applications using C#, MVVM architecture, and modern cross‑platform frameworks such as .NET MAUI, building on Xamarin‑based implementations where applicable. You will own key architectural decisions across the mobile platform, guide technical standards and best practices, and act as a technical reference point for mobile engineering within the R&D organisation.
What You’ll Be Doing
- Define and own the architecture for cross-platform mobile applications using .NET MAUI, ensuring scalability, maintainability, and alignment with mobile engineering best practices.
- Lead the development of core mobile application features using C#, .NET, and XAML, remaining hands-on with complex, performance-critical, and platform-specific components.
- Drive the migration and modernization of legacy Xamarin.Forms applications to .NET MAUI, establishing standards, reusable components, and modernization strategies.
- Collaborate with UX/UI teams to implement responsive, accessible, and high-performance user interfaces optimized for Android and iOS platforms.
- Oversee integration with RESTful APIs, third-party SDKs, secure local data storage solutions, and offline synchronization mechanisms.
- Establish and enforce coding standards, perform architecture and code reviews, and ensure application security, performance optimization, and stability.
- Own the end-to-end mobile application lifecycle, including CI/CD pipelines, build automation, versioning, signing, and deployment to the Apple App Store and Google Play Store.
- Mentor and guide senior and junior engineers, supporting technical decision-making and fostering a culture of engineering excellence and continuous improvement.
- Act as a key technical partner to product owners, backend teams, QA, and other stakeholders, translating business requirements into robust technical solutions.
What We Look For
- Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience
- 7+ years of professional software development experience
- Hands-on experience with .NET MAUI or advanced experience with Xamarin.Forms, including proven migration expertise
- Strong proficiency in C#, .NET, and XAML
- Deep understanding of MVVM, clean architecture principles, and modern mobile design patterns
- Proven experience delivering production-grade Android and iOS applications
- Strong knowledge of mobile application lifecycles, threading, and platform-specific behaviors
- Experience integrating RESTful APIs, third-party services, and secure local data storage solutions
- Familiarity with CI/CD pipelines and modern DevOps practices for mobile application delivery
- Demonstrated leadership skills, with the ability to mentor engineers and guide architectural decisions
- Strong communication skills and the ability to collaborate effectively with technical and non-technical stakeholders
At Clario, our purpose is to transform lives by unlocking better evidence. It’s a cause that unites and inspires us. It’s why we come to work—and how we empower our people to make a positive impact every day. Whether you're advancing clinical science, building innovative technology, or supporting our global teams, your work helps bring life-changing therapies to patients faster.
The duties and responsibilities listed in this job description represent the major responsibilities of the position. Other duties and responsibilities may be assigned, as required. Clario reserves the right to amend or change this job description to meet the needs of Clario. This job description and any attachments do not constitute or represent a contract. The Department Head has the discretion to hire personnel with a combination of experience and education, which may vary from the above listed qualifications.
Skills Required
- Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience
- 7+ years of professional software development experience
- Hands-on experience with .NET MAUI or advanced Xamarin.Forms experience, including migration expertise
- Strong proficiency in C#, .NET, and XAML
- Deep understanding of MVVM, clean architecture principles, and modern mobile design patterns
- Experience delivering production-grade Android and iOS applications
- Knowledge of mobile application lifecycles, threading, and platform-specific behaviors
- Experience integrating RESTful APIs, third-party services, and secure local data storage solutions
- Familiarity with CI/CD pipelines and modern DevOps practices for mobile application delivery
- Leadership experience mentoring engineers and guiding architectural decisions
- Strong communication and collaboration skills with technical and non-technical stakeholders
Clario Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Clario and has not been reviewed or approved by Clario.
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Leave & Time Off Breadth — Time off is described as generous, including flexible PTO for some roles and up to 26–31 PTO days for eligible staff. The calendar includes 15 paid company holidays and a Winter Break.
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Healthcare Strength — Healthcare offerings include multiple medical plan options via Highmark with coordinated care navigation, plus dental and vision through established carriers. Employer HSA contributions and mental-health support broaden the package.
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Inclusive Benefits Coverage — Coverage highlights include domestic-partner eligibility, transgender-inclusive care, and HIV prevention/treatment. These inclusive elements are presented alongside broader inclusion commitments.
Clario Insights
What We Do
-- Clario has been named a Top Workplace by Energage for the 2022 Top Workplaces USA national awards. -- Clario generates the richest clinical evidence by fusing our deep scientific expertise and global scale into the broadest endpoint technology platform. By doing this, we empower our partners to transform lives. With almost 50 years of experience, 19,000 clinical trials, and 870 regulatory approvals, Clario has mastered the ability to generate rich evidence across a Trial Anywhere™ portfolio: decentralized (DCT), hybrid and site-based clinical trials. With 30 facilities in nine countries across North America, Europe, and Asia Pacific, Clario delivers the power of certainty. Partners ————— Clario brings the best of ERT and Bioclinica together to work alongside our partners to solve some of their biggest questions on topics such as: - eCOA vs. paper - Decentralized Clinical Trial (DCT) - Rescue a clinical trial - Broad endpoint technology: cardiac safety, imaging, respiratory And many more. People ———— We are so honoured to be named a 2022 Top Workplace by Energage. One of our leading values at Clario is People First Always. We help individuals build meaningful careers at Clario as they serve to help transform patients lives. Join us on this journey and check out our careers page: https://clario.com/careers/
