Mobile Developer (9-month contract with bonus incentives)

Overview Mobile Developer (iOS & Android, LLM Applications) – 9-month contract with bonus incentives.

We are looking to fill this role immediately and are reviewing applications daily. Expect a fast, transparent process with quick feedback.

Why join us We are a European deep-tech leader in quantum and AI, backed by major global strategic investors and strong EU support. Our groundbreaking technology is transforming how AI is deployed worldwide — compressing large language models by up to 95% without losing accuracy and cutting inference costs by 50–80%. Joining us means working on cutting-edge solutions that make AI faster, greener, and more accessible — and being part of a company often described as a “quantum-AI unicorn in the making.”

Benefits Competitive annual salary

Two unique bonuses : signing bonus at incorporation and retention bonus at contract completion

Relocation package (if applicable)

Up to 9-month contract, ending on June 2026

Hybrid role and flexible working hours

Be part of a fast-scaling Series B company at the forefront of deep tech

Equal pay guaranteed

International exposure in a multicultural, cutting-edge environment

Role responsibilities Design, build, and maintain native mobile applications for iOS (Swift / Objective-C) and Android (Kotlin / Java) with a focus on AI / LLM-powered features and APIs

Integrate advanced AI, LLM, and NLP capabilities to deliver seamless in-app chat, text, or recommendation features

Collaborate with designers, product managers, and backend / AI engineers to deliver high-performance and engaging user experiences

Connect mobile apps to cloud services and APIs, ensuring real-time delivery of AI outputs and secure data exchange

Write clean, maintainable, and efficient code; troubleshoot, debug, and optimize across platforms for quality, reliability, and scalability

Monitor app performance, report issues, and contribute to continuous improvements in codebase and mobile UX

Document development processes, participate in code reviews, and support app deployment to the App Store and Google Play

Required Qualifications Bachelor’s degree in Computer Science, Software Engineering, or related technical field

Minimum 2 years’ experience developing and releasing iOS and Android mobile applications, including API / cloud integrations

Proficiency in Swift and Objective-C for iOS; Kotlin and Java for Android development

Familiarity with mobile UI / UX design principles, version control (Git), and use of Android Studio / Xcode

Experience integrating mobile apps with RESTful APIs and cloud services

Ability to communicate effectively and collaborate in a cross-functional product team

Preferred Qualifications Experience building mobile apps with LLM, NLP, or generative AI features

Familiarity with cloud ML services (AWS, Azure, GCP, OpenAI)

Prior experience publishing and maintaining apps on both App Store and Google Play

Interest in mobile data security and user privacy protections

About Multiverse Computing Founded in 2019, we are a well-funded, fast-growing deep-tech company with a team of 180+ employees worldwide. Recognized by CB Insights (2023 & 2025) as one of the Top 100 most promising AI companies globally, we are also the largest quantum software company in the EU.

Our flagship products address critical industry needs :

CompactifAI — a groundbreaking compression tool for foundational AI models, reducing their size by up to 95% while maintaining accuracy, enabling portability across devices from cloud to mobile and beyond

Singularity — a quantum and quantum-inspired optimization platform used by blue-chip companies in finance, energy, and manufacturing to solve complex challenges with immediate performance gains

You’ll be working alongside world-leading experts in quantum computing and AI, developing solutions that deliver real-world impact for global clients. We are committed to an inclusive, ethics-driven culture that values sustainability, diversity, and collaboration — a place where passionate people can grow and thrive. Come and join us!

As an equal opportunity employer, Multiverse Computing is committed to building an inclusive workplace. The company welcomes people from all backgrounds, including age, citizenship, ethnic and racial origins, gender identities, individuals with disabilities, marital status, religions and ideologies, and sexual orientations to apply.

Come and join our multicultural team!

Locations : Madrid, Las Rozas de Madrid, Greater Madrid Metropolitan Area

Seniority level Associate

Employment type Contract

Job function Engineering and Information Technology

Industry Software Development

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