Senior Software Engineer (Agentic AI) - Python

The AI Platform team at Datadog is at the forefront of innovation, developing the infrastructure that fuels next-generation generative AI features across our diverse product range. As a Senior Software Engineer on the Evaluation and Annotation team, you will play a pivotal role in designing and enhancing the systems that define and evaluate AI quality at scale. Your responsibilities will include creating evaluation pipelines, monitoring model performance, and establishing annotation workflows that assess correctness, safety, bias, and reliability in real-world applications. Your contributions will directly influence how Datadog develops and sustains reliable AI capabilities. You will collaborate closely with product, machine learning, and infrastructure teams to set quality standards, integrate evaluation systems with our observability platform, and build human-in-the-loop feedback mechanisms that ensure continuous improvement of model behavior. At Datadog, we cherish our office culture, valuing the relationships we build, the creativity we foster, and the collaboration that arises from working together. Our hybrid workplace model enables employees to cultivate a work-life balance that suits their individual needs.

The AI Platform is at the forefront of Datadog’s AI initiatives, encompassing everything from cutting-edge distributed training infrastructure for our state-of-the-art models to the essential frameworks that power Bits AI and LLMObs. We are on a mission to enhance our offerings beyond just model creation, focusing on the development of tools that will empower engineers to deploy production-ready generative AI systems. This includes creating retrieval-augmented pipelines, autonomous agents, and comprehensive evaluation harnesses.We are seeking a Senior Software Engineer to architect and develop this next-generation platform. You will collaborate closely with the Applied AI, product, and core infrastructure teams to deliver:Large-scale experimentation, training, deployment, and monitoring solutionsDeveloper toolchains tailored for agents and other generative AI applicationsLow-latency serving infrastructure that seamlessly integrates AI features into all Datadog productsAt Datadog, we value a vibrant office culture that fosters relationships, sparks creativity, and encourages collaboration. We operate in a hybrid work environment, allowing our employees to achieve a work-life balance that suits their individual needs.

About MistralAt Mistral AI, we harness the transformative power of artificial intelligence to streamline workflows, enhance creativity, and promote efficient learning. Our innovative technology seamlessly integrates into everyday operations, delivering tangible benefits.We are committed to democratizing AI through high-performance, optimized, and open-source models and solutions. Our comprehensive AI platform caters to enterprise requirements, whether in on-premises or cloud environments. Our flagship product, le Chat, serves as an AI assistant tailored for both personal and professional use.As a dynamic and collaborative team, we are passionate about AI's potential to revolutionize society. Our diverse workforce excels in competitive environments and is dedicated to fostering innovation. We have teams located across France, the USA, the UK, Germany, and Singapore, sharing a culture that values creativity, humility, and teamwork.Join us in shaping the future of AI at a pioneering company. Together, we can make a significant difference. Discover more about our culture at https://mistral.ai/careers.About The RoleAs an Evaluation Engineer within the Applied AI team, you will be a key member of Mistral's customer-facing technical organization. Our mission is to collaborate directly with enterprise clients, guiding them from pre-sales through implementation to deploy advanced AI solutions that yield measurable business outcomes. Your role will blend deep machine learning expertise with robust customer engagement, functioning like a startup CTO who oversees complete project execution.In the realm of AI, many brilliant ideas remain unmeasured or unrealized. As our inaugural Evaluation Engineer, you will establish the methodology, develop the necessary infrastructure, and clarify what constitutes 'production-ready' across various sectors and applications.Your responsibilities will include designing and implementing evaluation systems that empower our clients to assess model performance tailored to their unique use cases. You'll be instrumental in building a resilient evaluation infrastructure and collaborating closely with both research and client-facing teams.While our research teams develop evaluations for cutting-edge capabilities, our clients seek practical, domain-specific, risk-aware evaluations that are production-ready. You will create frameworks that assess whether a medical summarization model is reliable or if a legal assistant can accurately interpret complex legal texts.

Location: Flexible (Paris Issy-les-Moulineaux). This role provides the opportunity to work from home while being close to an office location. The Role As a Senior Cross-Platform Software Engineer at GoPro, you will play a pivotal role in enhancing and sustaining the core software that powers GoPro’s software ecosystem. You will be tasked with developing and refining software and tools that are utilized in mobile applications, desktop software, the GoPro cloud, and GoPro cameras. We are looking for a candidate with expertise across multiple platforms, programming languages, tools, and build systems who thrives in an agile software development environment. In this position, you will create high-quality, thoroughly tested libraries and tools that are compatible across various platforms. Collaborating with platform-specific teams, you will integrate these libraries and tools to construct a unified software ecosystem designed to help users capture and cherish their most treasured photo and video moments. What You Will Do Design, build, test, and maintain cross-platform software for client application development teams. Engage with a diverse array of platforms (desktop, mobile, cloud, embedded). Explore various domains, including media file format support, graphics programming, AI integration, platform abstractions, and algorithm development. Continuously enhance the quality and reliability of the code. Advance the software engineering system for improved software management, integration, and build processes. Skills We’re Excited About Bachelor's degree in Computer Science, Engineering, or a relevant field. 3-5 years of experience in cross-platform software development using C++ and at least one additional programming language. Excellent communication skills, both written and verbal. Bonus Points For Proficiency in modern C++ (C++11 and newer). Familiarity with the CMake build system. Experience developing libraries and applications for Windows, macOS, Linux, iOS, and Android. Strong skills in git, including GitHub Actions. Proficiency in Java, Kotlin, Swift, Objective-C, C#, and Python. Experience with Xcode, Visual Studio, and Android Studio. Background in working with photo, video, or audio media. A passion for photography and videography. Why Work With Us?

Your Impact The Data Product Manager serves as the primary liaison for internal stakeholders, helping them articulate their needs and collaborating with Analytics Engineering and Data Science teams to design, develop, and sustain a variety of data products. These include raw data, aggregated datasets, dashboards, and data exports that effectively solve user challenges. We are on the lookout for a Senior Product Manager specializing in Data and AI Platform to bolster our team. Our platform group is dedicated to creating tools and services that empower product teams, data scientists, and data engineers to innovate AI products. This encompasses solutions for data ingestion and export, product development, data access and exploration, as well as training, evaluating, and serving AI models. As a Platform Product Manager, your mission will be to define and prioritize strategic initiatives, ensuring the data and AI platform maximizes value for Doctolib and its users while maintaining scalability. This is an exhilarating time to join us as we implement transformative changes aimed at creating a more unified, open, scalable, and efficient platform to realize Doctolib's aspirations in AI. As a Platform PM, one of your core responsibilities will involve shaping the vision, strategizing to achieve that vision, tracking platform performance with appropriate metrics, and collaborating with the engineering team to prioritize and execute initiatives. Your responsibilities will include but are not limited to: Developing the data platform vision and roadmap by applying a product-focused approach to enhance the impact and scalability of each component and service. Working with data governance to establish robust data governance policies for effective data management. Defining and prioritizing solutions by leading the OKR definition for your team and collaborating with platform engineers to create a roadmap that aligns with the product vision. Engaging in short and mid-term prioritization, consulting with users and platform engineers, and securing the right resources to enhance platform elements. Facilitating communication with users and cross-functional teams to ensure alignment on the platform vision, strategy, and roadmap. Identifying user challenges and ensuring that products deliver the anticipated impact by maintaining continuous engagement with users and assessing the data and AI platform. Leading discovery sessions, scoping, and explorations while closely collaborating with stakeholders and data teams to guarantee that initiatives meet expected outcomes. Promoting the adoption of the data platform in conjunction with data teams and end-users.

About UsAt Harmattan AI, we are pioneers in developing next-generation defense systems that are both autonomous and scalable. With a recent $200M Series B funding round that has elevated our valuation to $1.4 billion, we are on a mission to enhance our teams and capabilities in delivering vital systems to allied forces.We operate with a commitment to impactful technology, striving for excellence, setting ambitious goals, and tackling complex technical challenges. Our environment is demanding, and we value rigor, ownership, and execution in our work.About the RoleWe are seeking a talented Software Tooling Engineer to create and enhance the internal tools that will allow our operations to accelerate and scale efficiently. This role involves working with our internal data infrastructure and operational workflows, designing high-leverage tools that support teams across the organization.You will combine strong software engineering skills with a deep understanding of user needs, taking ownership of the architecture, development, and deployment of essential tools for Harmattan’s core operational workflows, including AI-powered internal agents, workflow automation, internal data visualization tools, integrations, and lightweight backend services.ResponsibilitiesInternal Tools & AutomationDevelop internal tools and AI/LLM-powered agents utilized by various teams.Create dashboards, visualization tools, and workflow automations to enhance daily operations at Harmattan AI.Operational Workflow EnablementOptimize core operational processes through customized tools, connectors, and integrations with internal systems.Collaborate closely with teams to identify bottlenecks, rapidly iterate, and provide impactful solutions.Backend & InfrastructureDevelop and maintain lightweight backend services that power internal tools (APIs, data storage, metrics, logging).Assist in cloud deployment and integration with CI/CD and data pipelines.Quality & ReliabilitySet and uphold standards for code quality, testing, observability, and documentation.Ensure internal tools are reliable and meet the operational needs of the organization.

Join aircall, a pioneering unicorn in the realm of AI-driven customer communication platforms, utilized by over 22,000 companies globally to enhance revenue, expedite issue resolution, and effectively scale customer-facing teams. We are transforming the landscape of customer communications by integrating voice, SMS, WhatsApp, and AI into a unified workspace.Our growth is fueled by a straightforward principle: empower teams to work smarter, not harder. Our innovative AI Voice Agent automates routine calls, AI Assist optimizes post-call tasks, and AI Assist Pro provides real-time guidance, enabling individuals to perform at their best. This results in increased revenue, quicker resolutions, and teams that expand confidently.Based in Paris, our European headquarters, we have a robust North American presence in Seattle and teams across Madrid, London, Berlin, San Francisco, New York City, Sydney, and Mexico City. Our product is beloved by customers, and our business is rapidly expanding, supported by top-tier investors and driven by swift AI innovations across various product lines.Our Work Culture: At aircall, we prioritize customer satisfaction, data-driven decision-making, and delivering significant outcomes. We value ownership, continuous learning, and thoughtful speed. If you excel in a collaborative, dynamic setting where trust and impact are paramount, you will thrive here.We are in search of a dedicated and enthusiastic Senior AI Software Engineer to join our expanding engineering team.In this role, you will oversee the design, development, deployment, and operation of AI-driven features that enhance customer value. Your daily responsibilities will encompass operational excellence, metrics, observability, best practices, and mentoring within your team and across the engineering department.We are committed to quality, excellence, and agility in our delivery processes, and you will play a key role in elevating these standards. Utilizing NodeJS and TypeScript back-end technologies, suitable for each requirement, and always hosted on AWS, we create valuable and resilient services built on voice technology that seamlessly integrate with our customers' essential business tools (CRM, Helpdesk, E-Commerce, etc.).

Speechify is looking for a Software Engineer, Platform based in Paris, France. This position centers on developing and enhancing features for the company’s text-to-speech platform. Role overview The main goal is to design and build new capabilities that make Speechify’s platform stronger and more reliable. Work will directly support a better experience for users worldwide. What you will do Create and implement new features for the text-to-speech platform Contribute to projects that improve user experience for a global audience Location This role is based in Paris, France.

About UsSafran.AI, formerly known as Preligens, is a subsidiary of Safran Electronics & Defense, specializing in artificial intelligence solutions for analyzing high-resolution satellite imagery, full-motion video streams, and acoustic signals. Our innovative solutions cater to the aerospace, defense, and governmental applications.Since 2016, we have been developing complex algorithms and software that enable the automatic analysis, detection, and identification of military-relevant objects from both commercial and governmental data sources.Following our integration into Safran in September 2024, Safran.AI also plays a pivotal role in transforming the group by applying AI solutions to Industry 4.0 domains. For instance, our automated image analysis capabilities assist inspectors in identifying potential anomalies in critical components using digital images.At Safran.AI, innovation and the quest for a safer world are at the core of our mission. By joining us, you'll collaborate with multidisciplinary teams of passionate engineers, researchers, and developers who share a common drive for technological excellence. We foster a stimulating work environment that encourages creativity and initiative, where every idea is valued. Your Mission, Should You Choose to Accept ItThe AI Engineering team is responsible for developing and operating an internal AI production platform, essentially our very own AI Factory, utilized by Data Scientists to design, train, and deploy models at scale.The platform, originally focused on satellite image processing, is now entering a new phase characterized by:→ Diversification of data types (video, acoustic, factory imaging)→ Significant growth in the number of production models→ Increased requirements for robustness, security, and operability→ Expansion of use cases in air-gapped environments and across multiple sitesIn this context, we are evolving our approach towards a comprehensive Data Platform & ML Platform capable of supporting these diverse uses, hybrid environments, and stringent industrialization constraints.The team comprises about twenty engineers with hybrid AI, Software, and Data profiles, organized into three squads: MLOps platform, Data platform, and Enabling & DevX.

About UsHarmattan AI is at the forefront of developing autonomous and scalable defense systems. With a recent $200 million Series B funding round, which has positioned the company at a valuation of $1.4 billion, we are actively expanding our teams to provide mission-critical technologies to allied forces.Our mission is guided by our core values: creating impactful technologies, striving for excellence, setting ambitious goals, and tackling the most challenging technical problems. We thrive in a high-pressure environment where accountability and execution are paramount.About the RoleAs we scale our GNC, ML, Embedded Software, and Validation teams, we require robust internal software infrastructure to expedite development and testing. As a member of the Tooling team, you will spearhead the development of a cutting-edge drone simulator, pivotal for our advanced autonomous defense applications. This position offers substantial ownership and an opportunity to engage at the nexus of software engineering, simulation, and AI robotics, with a direct impact on missions.

H Company is seeking a Senior Product Manager to guide the direction of its Enterprise AI Platform. This position is based in Paris or London and follows a hybrid schedule with three days per week in the office. The role centers on shaping and delivering the product strategy for an AI platform designed to automate complex, multi-step tasks. H Company’s mission focuses on advancing agentic AI to expand what’s possible with automation, while maintaining a strong commitment to safety and responsibility in development. The team values openness, ongoing learning, and collaboration. Every team member has a voice, and the company actively seeks individuals who share a dedication to responsible innovation in AI. What you will do Define the vision and develop the roadmap for the Enterprise AI platform. Work closely with teams using the platform to understand enterprise needs and challenges, then turn those insights into meaningful features. Partner with research, engineering, and design colleagues to translate AI advancements into practical product features. Manage the product lifecycle from initial concept through to launch. Work location This role is based in Paris or London, with a hybrid work model requiring three days per week in the office.

Join the Ubisoft AI Initiatives team and help architect the future of information lifecycle management at Ubisoft. From advanced hybrid search pipelines to sophisticated agentic reasoning capabilities, we create tools that transform raw data into swift, informed decision-making. If you are eager to push the boundaries of collaboration between humans and AI to tackle complex challenges, this position is perfect for you.We are seeking an experienced Senior Software Engineer to become a vital member of our team focused on developing scalable back-end systems that power these cutting-edge AI applications.ResponsibilitiesAs a Senior Software Engineer – AI Applications, you will play a crucial role in designing and building essential services that enable our solutions. You will work at the intersection of AI, enterprise cloud applications, large-scale data processing, and cloud infrastructure, with numerous opportunities for growth and impact. This role requires a solid understanding of modern architectures, AI/ML integration, and a genuine passion for solving complex problems.Architect and develop back-end systems: Design and implement high-performing, scalable back-end services to support AI applications.Optimize performance: Ensure low-latency serving and high throughput for AI models, agents, and APIs while optimizing speed and reliability.Collaborate with teams: Partner with data scientists and ML engineers to integrate advanced AI models and agents into production, ensuring smooth deployment and monitoring.Cloud infrastructure: Build and maintain cloud-native solutions using platforms like AWS or Azure, focusing on scalability, security, and cost management.Technical leadership: Mentor junior engineers, conduct code reviews, and contribute to the team’s overall technical strategy.Technology watch: Stay updated on the latest trends in AI, cloud computing, and engineering, and propose innovative ideas.Joining our team as a Senior Software Engineer – AI Applications offers a unique opportunity to work on cutting-edge projects that shape the future of AI technology. You will have the chance to:Engage in continuous learning to stay at the forefront of AI advancements.Take on more responsibilities and influence the strategic direction of our AI products while contributing to high-impact innovation.

Join the innovative Ubisoft AI Initiatives team and help shape the future of information management within the gaming industry. We are at the forefront of developing advanced hybrid search systems and reasoning agents that transform raw data into rapid, informed decision-making tools. If you are passionate about enhancing human-AI collaboration to tackle intricate challenges, this is the perfect opportunity for you. We are on the lookout for a seasoned Senior Software Engineer to contribute to the creation of robust back-end systems that power our state-of-the-art AI applications.Key Responsibilities:Back-End Systems Development: Design and build scalable, high-performance back-end services that underpin AI solutions.Performance Optimization: Achieve low-latency and high-throughput operation for AI models, agents, and APIs, prioritizing speed and reliability.Cross-Team Collaboration: Work closely with data scientists and ML engineers to seamlessly integrate AI models and advanced agents into production environments, ensuring efficient deployment and monitoring.Cloud Infrastructure Management: Develop and sustain cloud-native solutions utilizing platforms such as AWS and Azure, focusing on scalability, security, and cost-effectiveness.Technical Leadership: Guide junior engineers, perform code reviews, and contribute to the team’s overarching technical strategy.Continuous Learning: Keep abreast of emerging trends and technologies in AI, cloud computing, and software engineering, and propose innovative ideas.As a Senior Software Engineer in AI Applications, you will have a unique opportunity to engage in leading-edge projects that influence the advancement of AI technologies. You will be able to:Participate in ongoing professional development to remain at the forefront of AI innovation.Assume greater responsibilities and influence the strategic development of our AI product offerings, driving significant innovations.

About H H focuses on advancing superintelligence through agentic AI. The company’s mission centers on automating complex, multi-step tasks that people usually handle, aiming for AI agents to help realize the full range of human potential. H seeks talented AI professionals who care deeply about responsible and safe development, as well as technical progress in agentic systems. The culture values openness, ongoing learning, and teamwork. Every team member’s input matters here. Product Engineering at H The Product Engineering team develops H’s Enterprise Platform, which provides customers with tools and services for essential operational needs. This platform supports large-scale computer-use agents, manages complex workflows, and offers a suite for observability, troubleshooting, and evaluation. Product Engineering connects AI research with practical applications and works closely with teams across the company.

About Us Safran.AI, formerly known as Preligens, is a subsidiary of Safran Electronics & Defense, specializing in artificial intelligence solutions for analyzing high-resolution satellite imagery, full motion video (FMV) streams, and acoustic signals. Our innovative solutions are implemented in the aerospace, defense, and governmental sectors. Since 2016, our company has been developing sophisticated algorithms and software that automatically analyze, detect, and identify military-relevant objects from both commercial and governmental data sources. Following our integration into Safran in September 2024, Safran.AI is also playing a pivotal role in the group’s transformation by applying AI solutions to Industry 4.0 sectors. For example, automated image analysis through AI aids inspectors in identifying potential anomalies in critical components from digital images. At Safran.AI, innovation and the creation of a safer world are at the core of our mission. By joining us, you will collaborate with passionate, multidisciplinary teams (engineers, researchers, developers) among the industry's most talented professionals, all driven by a shared commitment to technological excellence. We provide a stimulating work environment where creativity and initiative are encouraged, and every idea matters. Your Mission, Should You Choose to Accept It As part of Project Robin, an innovative solution for monitoring strategic sites via satellite imagery and AI, already in production with several clients, you will join a team of 7 developers. Together, you will focus on evolving various backend modules with strong scalability and modularization challenges (data pipeline, database, API, orchestration, deployment). Note: The ability to obtain a Defense clearance is mandatory for this position. As a Senior Software Engineer, you will play a central role in bringing your technical expertise to the design, development, and implementation of our complex software solutions. Your responsibilities will include:→ Maintaining and evolving web applications (Python/FastAPI and JavaScript/React).→ Designing, developing, and maintaining our backend infrastructure and automated pipelines (Python, Airflow, PostgreSQL).→ Collaborating closely with all teams and subject matter experts to understand end-user needs.

Join our innovative team at Datadog, where we are developing cutting-edge AI-assisted tools designed to empower our developers. Our mission is to autonomously generate tests, resolve bugs, and enhance software performance, driving efficiency and productivity.We are seeking a versatile and product-oriented engineer who can swiftly define and deliver products that enable Datadog's customers to become exceptionally productive developers.At Datadog, we prioritize a collaborative office culture that fosters relationships and creativity. Our hybrid workplace model allows our Datadogs to achieve a harmonious work-life balance that suits their individual needs.

About UsHarmattan AI is at the forefront of defense technology, creating autonomous and scalable defense systems. Following our successful $200M Series B funding round, which values our company at $1.4 billion, we are expanding our teams to deliver critical solutions to allied forces globally.We are driven by our core values: crafting technologies that make a real-world difference, striving for excellence in every endeavor, setting ambitious targets, and tackling the most challenging technical problems. Our environment is demanding, where rigor, accountability, and execution are paramount.About the RoleAs a Software Engineer specializing in Infrastructure & Deployment, you will be instrumental in designing the software systems that underpin our manufacturing and production environment. You will be responsible for architecting and maintaining deployment pipelines, automating infrastructure, and managing fleet solutions for our internal production assets, which include engineering workstations, automated test benches, and IIoT components. Your mission is to ensure a high-performance, reproducible, and scalable production line that empowers our R&D and manufacturing teams to operate at an exceptional pace.

About UsHarmattan AI is at the forefront of defense technology, specializing in the development of autonomous and scalable defense systems. Following the successful completion of a $200 million Series B funding round, which has valued our company at $1.4 billion, we are actively expanding our teams and enhancing our capabilities to deliver mission-critical solutions to allied forces.We are driven by our core values: creating technologies with meaningful impact, striving for excellence in all our endeavors, setting ambitious goals, and tackling the most challenging technical problems. Our work environment is dynamic and demanding, where rigor, accountability, and execution are paramount.About the RoleAs an Automation Software Engineer, you will be instrumental in designing and developing the software that powers our automated testing and inspection platforms. Within the R&D department, you will develop robust and scalable automation tools that enhance both product development and manufacturing processes. Your primary focus will be on software development for test automation, while also engaging in the integration of mechanical and electrical components of test systems.

The AI Platform at Datadog is at the forefront of our AI infrastructure, dedicated to empowering data scientists and engineers with robust tools and platforms for large-scale training and inference. Our initiatives include notable products such as Bits AI, LLMObs, and additional AI research efforts.As the Engineering Manager for the Training & Serving team, you will play a pivotal role in a rapidly expanding team and help define our technical vision and roadmap. Your team will tackle significant technical challenges, including distributed training of foundation models, scaling serving systems, and enhancing user experience.You will collaborate closely with other teams within the AI Platform organization to ensure a smooth AI development cycle and partner with the Applied AI organization and Datadog infrastructure teams to build systems from the ground up.At Datadog, we prioritize our office culture, valuing the relationships, creativity, and collaboration that come from working together. We embrace a hybrid work model to allow our employees to achieve a work-life balance that suits them best.