Fullstack Software Engineer Internship - C#, .NET, SQL Server, React.js - H/F

About Teads Teads is an omnichannel advertising platform focused on delivering measurable results for both brand and performance advertisers. The company uses predictive AI technology to connect high-quality media, visually appealing creatives, and contextually relevant targeting and measurement. Teads partners directly with more than 10,000 publishers and 20,000 advertisers worldwide. Headquartered in New York City, the team includes about 1,700 people across 30+ countries. Learn more at www.teads.com. Team Overview: Finance Solutions The Finance Solutions team builds and manages products that support Teads’ financial operations for internal users, advertisers, and publishing partners. The group focuses on simplifying finance processes, improving efficiency and accuracy, and increasing reliability. Automation, system integrations, and AI play a key role in solving pain points and driving ongoing improvements. Role Overview This Senior Software Engineer position sits within the Finance Solutions team in Montpellier. The role covers the full project lifecycle: analyzing requirements, designing solutions, building and deploying features, and providing ongoing support. Work in this role directly impacts internal users and thousands of external customers and partners. The team values ownership, results, creative problem-solving, collaboration, and adaptability. The right candidate will be proactive and open to stepping into a leadership role as the team grows and performance warrants. Main Responsibility Design, build, and deploy finance-related features across a complex, diverse ecosystem.

Teads is an omnichannel advertising platform that connects high-quality media with brand creativity. The company uses predictive AI to deliver results for both brand and performance advertisers. With a network spanning over 10,000 publishers and 20,000 advertisers worldwide, Teads operates at significant scale. The team includes around 1,700 professionals based in more than 30 countries, with headquarters in New York City. For more information, visit www.teads.com. Role overview The Finance Solutions Team at Teads is looking for a Data Engineer in Montpellier. This role centers on building and maintaining systems that process large volumes of data to support financial operations and reporting. The work involves both backend engineering and close collaboration with other teams to deliver reliable solutions. What you will do Develop and optimize web products used by publishers, advertisers, and agencies. Work with a diverse technology stack, with Scala and TypeScript as core languages. Design systems for performance, scalability, resilience, and cost efficiency. Process and manage high-traffic data: 2.2 billion users monthly, 100 billion events daily, and 2 million requests per second, with response times under 150 milliseconds. Support near real-time auction algorithms, handling 18 million predictions per second and ensuring millisecond-level data access. Collaborate with Product teams and adapt cloud infrastructure to support evolving business needs. Requirements Experience working with large-scale data systems. Proficiency in Scala and TypeScript, or similar programming languages. Ability to design for high performance and scalability. Comfort working in a collaborative, fast-evolving environment.

About TeadsTeads stands as a premier omnichannel advertising platform dedicated to achieving impactful results for brand and performance advertisers across diverse screens. By harnessing the power of predictive AI technology, Teads connects high-quality media, stunning brand creativity, and context-driven addressability and measurement. Our robust partnerships extend to over 10,000 publishers and 20,000 advertisers worldwide. With our headquarters located in New York City, we boast a global team of approximately 1,700 professionals across more than 30 countries.For more information, visit www.teads.com.Engineering Challenges at TeadsCreate efficient and user-friendly web products utilized by thousands of users from the world’s leading publishers, advertisers, and agencies.Diverse tech stack and system architecture optimized for performance, scalability, resilience, and cost-efficiency, primarily using Scala and TypeScript.Operate in a high-traffic environment (2.2 billion users per month and 100 billion events daily) with stringent low latency and high availability demands (handling 2 million requests per second with response times under 150 milliseconds).Manage large datasets with millisecond-level access times to facilitate near real-time complex auction resolution algorithms (18 million predictions per second).Adapt rapidly in collaboration with Product teams to continuously evolve our Cloud infrastructure for new features and products.

At Swile, we are passionate about creating products that alleviate everyday challenges in the professional realm while enhancing employee satisfaction. Our innovative solutions span multiple sectors, including Fintech, Travel, HR, and Employee Benefits, serving over 5.5 million users across 85,000 companies in France and Brazil. As a Senior Software Engineer, you will play a pivotal role in tackling complex problems with creativity and precision. Your focus will be on delivering innovative solutions that harmonize speed, pragmatism, and excellence, transcending specific technologies to meet our business and engineering challenges.

Teads develops omnichannel advertising solutions, connecting brands and publishers through predictive AI and context-driven targeting. The company partners with over 10,000 publishers and 20,000 advertisers worldwide, with a team of approximately 1,700 professionals across more than 30 countries. The main office is in New York City. Role overview The Senior Software Engineer on the Core Branding Team will help build and maintain web products used by leading publishers, advertisers, and agencies. The work centers on delivering efficient, intuitive experiences for thousands of users, while meeting demanding standards for speed and reliability. Key challenges Design and implement web products that handle high traffic and large-scale data, supporting 2.2 billion users monthly and processing 100 billion events daily. Work with Scala and TypeScript across a broad technology stack, focusing on system performance, scalability, resiliency, and cost efficiency. Meet strict requirements for low latency and high availability, handling up to 2 million requests per second with response times under 150 milliseconds. Support complex auction algorithms and predictive models, enabling millisecond-level access to large datasets (18 million predictions per second). Collaborate with product teams and adapt cloud infrastructure to enable new features and ongoing product improvements. More about Teads can be found at www.teads.com.

Join Alten as a Senior Software Engineer and be part of a dynamic team dedicated to pioneering advancements in the Energy & Environment sector. In this role, you will leverage your expertise to develop innovative software solutions that address complex challenges and contribute to sustainable practices.

About TeadsTeads is a premier omnichannel advertising platform dedicated to achieving impactful results for both brand and performance marketers across various screens. We prioritize significant business outcomes through the use of advanced predictive AI technology, seamlessly connecting high-quality media with stunning brand creatives and contextually-driven targeting and analytics. With strategic partnerships with over 10,000 publishers and 20,000 advertisers worldwide, Teads is at the forefront of innovative advertising solutions. Our headquarters are based in New York City, and we boast a diverse global team of approximately 1,700 professionals across more than 30 countries.For further details, visit www.teads.com.Our Engineering Challenges at TeadsDevelop efficient and user-friendly web products utilized by thousands of users representing the world’s leading publishers, advertisers, and agencies.Utilize a rich and diverse technology stack and system architecture to optimize for performance, scalability, reliability, and cost efficiency, primarily using Scala and TypeScript among other technologies.Operate in a high-traffic environment handling 2.2 billion users monthly with strict low latency and high availability requirements (2 million requests per second with responses under 150 milliseconds).Manage large datasets with millisecond-level access times to execute a near real-time complex auction resolution algorithm (18 million predictions per second).Thrive in a dynamic environment where we consistently collaborate with Product teams and adapt our Cloud infrastructure for new features and production requirements.

At Swile, we are passionate about creating exceptional products that streamline professional experiences and enhance employee satisfaction. We deliver cutting-edge solutions across Fintech, Travel, HR, and Employee Benefits, empowering over 5.5 million users across 85,000 businesses in France and Brazil. As a Senior Mobile Engineer, you will be at the forefront of innovation, tackling complex challenges with creativity and expertise. Your focus will be on developing innovative solutions that balance speed with quality, ensuring a seamless mobile experience that supports various product domains. Join our dynamic mobile experience team to build a robust mobile platform that serves as a foundation for our diverse offerings.

Teads is seeking a Software Engineer Apprentice to join the team in Montpellier. This apprenticeship provides direct experience working alongside seasoned engineers and offers a strong introduction to software development within a collaborative environment. What you will do Work with team members on active development projects Develop coding and troubleshooting skills through practical tasks Grow abilities in project management and problem-solving Learning environment This position is suited for those motivated to begin a career in software engineering. Apprentices receive hands-on training and guidance from experienced colleagues, building a foundation in technical skills and teamwork.

Teads develops omnichannel advertising solutions, connecting major brands and publishers with engaging, context-driven campaigns. The company operates at a global scale, partnering with over 10,000 publishers and 20,000 advertisers. Its team spans more than 30 countries, with headquarters in New York City. Role overview This Software Engineer role focuses on building and improving web products used by thousands of publishers, advertisers, and agencies. The position is based in Montpellier. What you will do Design and develop intuitive, efficient web products for a diverse set of users. Work with a broad technology stack and system architecture, mainly using Scala and TypeScript. Support systems that process 2.2 billion users monthly and handle 100 billion events each day. Meet strict requirements for low latency and high availability, with infrastructure handling 2 million requests per second and response times under 150 milliseconds. Work with large datasets requiring millisecond access for near real-time auction resolution, powering 18 million predictions every second. Collaborate with Product teams to adapt cloud infrastructure as new features and products are launched. Key challenges Balancing performance, scalability, resilience, and cost efficiency across the technology stack. Maintaining reliable operations in a rapidly evolving environment. Learn more about Teads at www.teads.com.

Join Alten as a Software Engineer (H/F) in Montpellier and be part of a dynamic team dedicated to innovative solutions in the Energy & Environment sector. In this role, you will design, develop, and implement software that drives progress and sustainability. Collaborate with cross-functional teams to enhance product functionality and optimize user experiences.

Teads is seeking a Software Engineer Intern to join its team in Montpellier. This internship provides hands-on experience with digital advertising technology used by millions of people worldwide. What you will do Work closely with experienced engineers on active projects Contribute code and ideas to products that reach a large audience Gain exposure to the challenges of digital advertising at scale Location This position is based in Montpellier. Who this role suits This internship is designed for students or recent graduates interested in software engineering and digital advertising technology. Expect to work on meaningful projects and learn from a collaborative team.

Role overview CoderPad is looking for a Software Engineer based in Montpellier. The main focus is on developing and improving coding assessment tools that support teams in evaluating technical skills. This work involves both building new features and refining existing ones to ensure the tools remain effective and reliable. Collaboration is a key part of this role. The team values creative approaches to problem-solving and maintains a strong commitment to technical quality. Working alongside experienced colleagues, you will contribute ideas and solutions that shape the future of CoderPad’s assessment products.

Join our innovative team at Septeo as an AI Engineer, where you will be at the forefront of developing cutting-edge software and systems for intelligent agents. Your expertise in artificial intelligence will drive advancements that impact various industries, enhancing efficiency and performance.

About the Summer School Teads offers a Software Engineering Summer School in Montpellier for those looking to build practical experience in software development. This program focuses on real projects and current technologies, giving participants a chance to work closely with others and sharpen their coding abilities. What to Expect Hands-on learning with guidance from experienced engineers Opportunities to collaborate on team projects Exposure to modern software tools and practices Supportive environment for developing technical and problem-solving skills The summer school is ideal for aspiring software engineers ready to grow through practical work and teamwork in Montpellier.

Teads connects brands and advertisers with high-quality media through an omnichannel advertising platform. The company works with more than 10,000 publishers and 20,000 advertisers, delivering campaigns that use predictive AI and a focus on context-driven addressability. Headquartered in New York City, Teads employs about 1,700 people across over 30 countries. More details are available at www.teads.com. Role overview The Core Branding Team at Teads builds and maintains web products that serve thousands of users, including major publishers, advertisers, and agencies. This work involves handling a high-traffic platform that reaches 2.2 billion users every month and processes 100 billion events daily. The team focuses on delivering low-latency, high-availability services, with targets such as 2 million requests per second and response times under 150 milliseconds. Main engineering challenges Design and build efficient, user-friendly web products for a diverse set of users. Work across a broad technology stack, with a strong emphasis on Scala and TypeScript, to improve performance, scalability, resilience, and cost efficiency. Manage large-scale datasets that require millisecond access times to support a near real-time auction resolution algorithm, handling up to 18 million predictions per second. Collaborate with Product teams and adapt Cloud infrastructure to deliver new features and product improvements.

About TeadsTeads is a premier omnichannel advertising platform dedicated to delivering exceptional outcomes for brand and performance advertisers across various screens. Our mission is to create significant business results for branding and performance goals by employing advanced predictive AI technology. By connecting high-quality media with captivating brand creatives, we ensure context-driven addressability and measurement. Teads collaborates directly with over 10,000 publishers and 20,000 advertisers around the globe. Our headquarters is located in New York, New York, and we are proud to have a diverse team of approximately 1,700 professionals across more than 30 countries.For more details, visit www.teads.com.Our Engineering Challenges at TeadsDevelop highly efficient and user-friendly web products utilized by thousands of professionals in the world’s leading publishing, advertising, and agency sectors.Leverage a rich and diverse tech stack and system architecture optimized for performance, scalability, resiliency, and cost-effectiveness, primarily utilizing Scala and TypeScript.Operate in a high-traffic environment (2.2 billion users monthly, 100 billion events daily) while ensuring low latency and high availability (2 million requests per second with responses under 150 milliseconds).Manage large datasets with millisecond access times to support near real-time complex auction resolution algorithms (18 million predictions per second).Adapt swiftly to a fast-paced environment while collaborating closely with Product teams to continuously refine our Cloud infrastructure in line with new features.

About TeadsTeads is a premier omnichannel advertising platform dedicated to delivering impactful results for brand and performance advertisers across various screens. By focusing on significant business outcomes for both branding and performance goals, Teads harnesses predictive AI technology to connect high-quality media, captivating brand creatives, and contextually relevant addressability and measurement. With partnerships spanning over 10,000 publishers and 20,000 advertisers worldwide, Teads is headquartered in New York City and employs approximately 1,700 individuals across more than 30 countries.For more information, visit www.teads.com.Performance @TeadsThe merger of Teads and Outbrain in 2025 has given rise to a robust and distinctive Performance portfolio, empowering brands to achieve measurable outcomes across the open web and Connected TV. By merging exclusive premium inventory (inRead, Feed, CTV) with state-of-the-art AI optimization, Teads equips enterprise advertisers to drive exceptional traffic, engagement, and conversions while upholding top-tier brand safety and quality standards.As we continue to consolidate these capabilities into a unified, actionable platform within Teads Ad Manager, Performance is rapidly evolving into one of the company’s most strategic and fastest-growing sectors.As a Senior Product Manager, you will oversee the entire product lifecycle from conception to execution. You will collaborate with various stakeholders to pinpoint market opportunities, establish clear objectives, and propel the development of solutions that thrill our customers while enhancing the efficiency and scalability of our offerings.Key Responsibilities:Define and shape the product roadmap.

Join our dynamic team at Meritis as a DevOps Engineer (H/F) in vibrant Montpellier! We are looking for a passionate individual who can bridge the gap between development and operations, enhancing our software delivery pipeline and ensuring high availability and performance of our systems.