Intern - Mobile Developer (iOS/Android)

About Tessan Tessan is a French startup focused on telemedicine. The company’s mission: make medical care more accessible, especially in areas with limited healthcare options. Over 1,500 devices have been deployed across France in under six years. Tessan’s goal is clear, every French citizen should be able to reach a doctor within 15 minutes of home. Interns…

We are seeking a highly skilled Senior Site Reliability Engineer to join our dynamic Research and Development team at Vusion Group SA. In this pivotal role, you will ensure the reliability, availability, and performance of our systems while collaborating with cross-functional teams to enhance our infrastructure.Your responsibilities will include implementing SRE practices, monitoring system health, and optimizing performance. You will also design and develop tools for automation and contribute to incident response strategies.

About UsAt Yubo, we are revolutionizing the way individuals connect online through our innovative Social Discovery app. By removing likes and follows, we empower our users to form authentic relationships and express their true selves.We have pioneered a fresh approach for Generation Z to engage socially in the digital realm, currently serving millions of active users. Our mission is to continuously redefine how social connections are formed now and in the future.Our team is diverse, multicultural, and passionately dedicated to our vision. As a leading platform for online socialization, we prioritize creating a safe digital environment for our community. Safety is ingrained in our values, and we proactively work on user protection, support, and education, collaborating with the tech industry and NGOs to establish best-in-class child protection standards.Join us on this exciting journey and play a vital role in shaping the future of social interactions!Role OverviewAs we expand our Tech organization for 2026, Yubo is launching a new Innovate squad dedicated to daring product initiatives and high-stakes projects.This squad aims to take bold risks, experiment with ambitious features, and validate ideas through ongoing testing.We are seeking a Senior Backend Engineer to become a key member of our Backend Experience team, reporting directly to Armand, our Engineering Manager.You will work within a multi-disciplinary squad (including Product, Mobile, Design, and Data) alongside a Senior Backend Engineer who shares leadership responsibilities.Your mission? Design, implement, and manage high-risk backend experiments that test groundbreaking product ideas while ensuring our systems remain resilient, scalable, and cost-effective throughout rapid iteration cycles.This position is not about maintenance; it's focused on building, testing, rolling back, iterating, and learning swiftly.

Role Overview Prelude is hiring a Founding Device Fingerprinting Engineer in Paris, France. This role focuses on building advanced technology that strengthens user privacy and security by applying device fingerprinting methods. What You Will Do Design and develop device fingerprinting solutions to support digital security initiatives. Work closely with a skilled team of engineers and security specialists. Help define the technical direction and future of Prelude’s products. Location This position is based in Paris, France.

Join Tanium as a Senior Advanced Consulting Engineer, where you will leverage your expertise in delivering innovative solutions to our clients. As a key member of our consulting team, you will drive technical initiatives, collaborate with cross-functional teams, and empower organizations to maximize their investment in Tanium's platform.Your role will involve conducting assessments, providing strategic guidance, and implementing best practices to enhance security and operational efficiency for our clients. If you are passionate about technology and possess a strong consulting background, we invite you to apply and help shape the future of enterprise security.

About fifty-five:fifty-five is a pioneering data company that empowers brands to harness the power of data to enhance marketing, media, and customer experience through a unique blend of specialized consulting and technology services.As a cornerstone of the Brandtech Group, we provide services that integrate strategic consulting, cloud services, media consulting, and customer experience.With over 320 digital experts, including consultants, tracking and media specialists, engineers, and data scientists, fifty-five collaborates closely to deliver top-tier marketing advice and technical support to brands across all industries worldwide.As a trusted partner, we assist advertisers from data collection to activation and utilization, helping organizations evolve into true omnichannel entities that master their digital ecosystem's efficiency and its synergy with the physical world.Based in Paris, we operate across three time zones from our ten offices located in Paris, London, Geneva, Milan, Shanghai, Hong Kong, Shenzhen, Taipei, Singapore, and New York. fifty-five highly values the well-being of its employees, which earned us a spot in the Best Workplaces France ranking in 2018.We firmly believe that the work environment is a key element of employee well-being, and we strive to provide excellent working conditions for our fifty-fivers. Humility, humor, and human qualities are shared values among all!Context:As part of the Consulting team, you will actively participate in missions carried out by fifty-five for its clients. These missions involve optimizing conversion on sites and enhancing the performance of the digital media mix. Conversion is defined as achieving a specific and measurable action.As a Data Consultant, you will ensure the effective implementation of advanced marketing actions related to activation. This means you will engage in data exploration and processing, liaising between Tech teams and Business teams to deliver AI-oriented Marketing use cases while integrating the business requirements of the company for relevant activation.Responsibilities:In alignment with the client's project, you will be involved in the following aspects:Promoting data science and data processing in service of digital marketing,Following an action plan punctuated by various milestones;Ensuring the quality and accuracy of data;Guaranteeing the quality of deliverables sent to clients;

Join Voodoo as a Senior Back-end Engineer to lead the development of Wizz, a dynamic social app for teens. Utilize your technical expertise to enhance our backend architecture, optimize scalability, and ensure performance for millions of users. Collaborate with cross-functional teams to shape the product vision and contribute to decision-making processes, making a tangible impact in the world of mobile applications.

JOIN OUR TEAMWith nearly 40 members across various disciplines including Backend, Frontend, iOS, Android, DevOps, Product, UX/UI, and QA, our Tech team at Cheerz is committed to developing, testing, and deploying features that engage hundreds of thousands of users throughout Europe. Our apps and website allow customers to customize their photo products, creating unique, personalized, and memorable keepsakes.The development team operates across four platforms: backend, web, iOS, and Android, each ensuring technical integrity. Developers work within autonomous, multidisciplinary agile squads.As an Engineering Manager for Frontend Web at Cheerz, you will report directly to the CTO. You will lead a team of web developers and be part of the "Product Trio" within a squad, collaborating closely with Product Managers and Product Designers.You will thrive in a collaborative environment where bridging expertise is essential: you will connect developers, especially with Staff Engineers, the Product team, and other stakeholders at Cheerz. Your input will be vital in making strategic decisions that influence your domain and help shape Cheerz's engineering culture.Your key responsibilities will include:Technical Excellence and Vision- Ensure software quality and scalability of your area of expertise. Facilitate the adoption of best practices, standards, and architectural decisions.- Collaborate with Staff Engineers and the CTO to co-develop the technical roadmap.- Identify and lead major technical initiatives (architecture redesign, technical debt reduction, performance optimization).- Support change management and resolve resistance issues.Management and Delivery- Co-manage with the Product Trio the delivery of features and product initiatives.- Plan sprints and prioritize the technical roadmap.- Allocate resources and track project progress.- Maximize team efficiency and foster a positive work culture.

The AI platform at Datadog is integral to our commitment to delivering exceptional AI infrastructure. Our goal is to equip data scientists and engineers with powerful tools and platforms that facilitate seamless large-scale training and inference. We proudly support innovative products such as Bits AI, LLMObs, and our extensive AI research.Join our rapidly expanding team that plays a pivotal role in shaping the future of Datadog. In this position, you will be vital in building and scaling our team, defining our technical vision, and crafting the roadmap for our initiatives. You will oversee other managers and play a key role in structuring our organization, including recruiting future managers and individual contributors. Collaborate closely with various teams within the AI platform organization to ensure a streamlined AI development cycle, and work alongside the Applied AI organization, product engineering teams, and Datadog's infrastructure and tooling teams to build systems from the ground up.At Datadog, we cherish our office culture—fostering relationships, encouraging creativity, and promoting collaboration are fundamental to our mission. We embrace a hybrid workplace model, allowing employees to achieve a work-life balance that suits their needs.

Join Back Market as a Senior Backend Engineer I and be part of our mission to make refurbished devices the first choice for consumers. You will play a critical role in developing and optimizing our B2C services that enhance user experience and drive customer satisfaction. In this position, you'll collaborate with cross-functional teams to design scalable backend solutions, implement robust APIs, and ensure high performance and responsiveness of our applications.

Company Overview: Tessan is a pioneering French start-up in telemedicine, dedicated to combating medical deserts across France. With over 1,600 devices deployed in less than seven years, we aim to ensure that every French citizen can access a doctor within 15 minutes of their home. To achieve this ambitious goal, we are expanding our presence nationwide and are seeking our next Sales Development Representative Intern (M/F) to support our commercial growth! Key Responsibilities: As a Sales Development Representative Intern (M/F), you will be integral to our acquisition strategy:Prospecting: Identify and reach out to potential clients (pharmacies, opticians, etc.) through various channels (phone, social media, email, events).Qualification & Pitch: Present our solutions, address prospect inquiries, and highlight the benefits of our products.Appointment Setting: Schedule meetings for our sales team and enhance our prospect database.Follow-up & Reporting: Regularly update the CRM and prepare weekly reports.Collaboration: Work closely with other departments at Tessan.

Your ImpactJoin our dynamic team as a Senior Software Engineer in the AI Health Companion division, where your expertise will help us revolutionize healthcare. You will play a crucial role in evolving the Doctolib application into a comprehensive health companion powered by artificial intelligence, enabling patients to manage their health with precision and compassion.Your primary responsibility will be to collaborate within a feature team to develop an AI-driven chat interface designed to address patients' inquiries regarding their health and the health of their loved ones. Your contributions will directly enhance the experience of healthcare teams and patients alike.

Join our dynamic team at myjobcompany1 as a Senior Front-End Engineer (H/F)! In this role, you will play a crucial part in developing cutting-edge web applications that provide an outstanding user experience. You will collaborate closely with designers and backend developers to create seamless and responsive user interfaces. We are looking for innovative thinkers who are passionate about technology and eager to contribute to exciting projects.

Founded in France and the United States, Gojob is a pioneer in AI-driven recruitment.Our Mission: To develop cutting-edge innovations that make the job market more fluid and accessible, while supporting each individual with dignity.At Gojob, we pride ourselves on our ability to “staff instantly, at scale and with care.”As a member of the French Tech 120 (FT120) since 2021 and recognized in the Next 40 in 2025, Gojob has also received accolades from the Financial Times and achieved B Corp certification in 2023, further solidifying our ascent in the job market.Our project is built on three pillars:Innovation: Our 100% tech ecosystem, data infrastructures, and our AI “Aglaé” revolutionize recruitment processes and redefine individual support. From sourcing and matching to onboarding and training, technology is integral to Gojob.Efficiency: We commit to delivering tangible and transparent operational results: over 95% service rate and an average staffing time of 24 minutes. For our “Gojobbers,” we offer unique support tailored to their professional journey, including financial services and 24/7 assistance.Impact: As a certified B-Corp and Social Economy Enterprise (ESS), our mission is deeply embedded in our statutes, and we measure our performance through indicators related to our impact on the job market.Key Figures:- 80,000 recruitments conducted for major corporations and medium-sized enterprises.- 40% revenue growth projected in 2024.- €25M invested in Research & Development.- 2,000,000 applications processed by AI annually.- 20,000 conversations managed by AI weekly.- 2,000,000,000 matching scores calculated by AI each week. Why Join Us?

Join Doctrine as a Senior Machine Learning Engineer and be part of an innovative team dedicated to leveraging AI to transform the way legal information is accessed and utilized. You will be instrumental in developing cutting-edge machine learning models and algorithms to enhance our product offerings. This is an exciting opportunity to work with a dynamic group of professionals in a fast-paced environment.

Join Labelium as an E-commerce Project Intern for a dynamic 6-month experience in the heart of Paris. You will assist in managing and optimizing our e-commerce projects, gaining valuable insights into the digital marketing landscape. This role is perfect for individuals looking to kickstart their careers in the fast-paced world of e-commerce.

About WPP MediaWPP is the trusted growth partner for the world’s leading brands. With exceptional talent, trusted data and intelligence, and outstanding partnerships unified by our pioneering agentic marketing platform, WPP Open, we assist clients in navigating change, seizing opportunities, and achieving transformational growth.WPP Media, as the AI-driven media arm of WPP, integrates media, data, and partnerships to deliver creative personalization at scale. Leveraging WPP Open and powered by Open Intelligence, clients can precisely understand where, how, and why their media investments are yielding results.For more information, visit wppmedia.com.In the interest of clarity and accessibility, we have chosen not to use inclusive writing in our communications. WPP Media is firmly committed to diversity: we value inclusion and equality, considering all candidates regardless of gender identity, ethnicity, or religion. All our positions are also open to individuals with disabilities.

Join our dynamic team at Altarea as an Intern Assistant Construction Manager! This position offers a unique opportunity to gain hands-on experience in the construction industry while supporting project managers in coordinating various aspects of construction projects.As an intern, you will assist in planning and executing construction activities, ensuring compliance with safety regulations, and collaborating with various stakeholders to deliver high-quality results. Our ideal candidate is eager to learn, detail-oriented, and passionate about construction.

Join our dynamic team as a QA Engineer specializing in Payment and Financial Services. In this role, you will ensure the quality of our cutting-edge financial applications through rigorous testing and validation processes. You will collaborate with cross-functional teams to identify defects and improve product quality, contributing to the success of our innovative solutions.

Join the AMI Prêt-à-Porter studio as a Fashion Stylist Assistant for a 6-month internship, contributing to the creative process behind the Autumn-Winter 2027 collection.Under the guidance of experienced stylists (denim, leather, and soft fabrics), you will play an integral role in the collection's development.Creative Responsibilities:• Engage in inspiration research, including iconographic studies (online and library) and create 3D models and details.• Produce drawings using Adobe Illustrator and collages with Photoshop.• Assist in fittings alongside the stylists.• Create documentation to support product development.• Update collection documents (mood boards, technical files).• Organize and archive products, materials, and samples.Studio Life:• Provide daily support to the Leather, Denim, Soft Fabric, and Jersey stylists throughout the creation process.• Help prepare for appointments, including fittings, organization, and setup.• Ensure the studio and fitting room spaces are well-organized and maintained.• Participate in the preparations for fashion shows and showroom periods.