Software Engineer - Tooling at Harmattan AI | Paris

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 …

Join our innovative team at Datadog, where we are developing AI-driven tools designed to enhance developer productivity by autonomously generating tests, resolving bugs, and optimizing performance.We are in search of a product-focused generalist who can swiftly define and deliver products that empower all Datadog users to become exceptionally efficient developers.At Datadog, we highly value our office culture, fostering strong relationships and collaboration that spark creativity. Our hybrid work environment enables our team to achieve a harmonious work-life balance tailored to their needs.

Join Terabase Energy as a Senior Generative AI Engineer and be at the forefront of innovation in clean energy technology. In this role, you will leverage advanced generative AI techniques to drive improvements in energy systems and enhance the efficiency of renewable energy sources. Collaborate with a dynamic team of experts dedicated to creating sustainable solutions for a greener future.

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.

Are you looking to join a pioneering collective that embraces a permanent Test & Learn mindset, providing you with the tools to truly realize your ambitions? Look no further! At SFEIR, your career path is yours to navigate—whether it’s vertical, horizontal, or transversal. Your PlaygroundTech Stack: Python, FastAPI, LangChain, NLP, RAG, VertexAISFEIR AI: A dedicated journey to master generative AI and agent-based coding.Community: 140 Google Cloud certified professionals, 30 Google Authorized Trainers, 7 Google Developer Experts. Your Responsibilities- Develop unified, multimodal GenAI APIs (text, image, video, audio).- Design chatbots and conversational agents utilizing contextual RAG for hyper-personalized recommendations.- Engage in the creation of solutions from ideation to production.- Create AI digital twins to simulate and optimize complex ecosystems.- Establish robust Data Platforms to feed models while optimizing cutting-edge NLP pipelines. Your Profile- You have at least 3 years of experience, including significant exposure to ML or GenAI.- Proficiency with the VertexAI ecosystem and key concepts such as RAG, fine-tuning, and agent development.- You are passionate about technological advancements, constantly experimenting with new tools, and have personal projects or open-source contributions. Why Join SFEIR?- Each Sfeirian is supported by an Engineering Manager.- Opportunities for advancement into roles such as Lead GenAI Engineer, Staff Engineer, Principal Engineer, or Engineering Manager.- Continuous training with access to Google Cloud Skills Boost and certifications.- Participation in Google Cloud events, with an active community hosting over 50 events annually.

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.).

Join Aircall, a leading AI-driven customer communications platform, revolutionizing how over 22,000 businesses worldwide engage with their customers. Our innovative technology seamlessly integrates voice, SMS, WhatsApp, and AI into one cohesive workspace, enhancing team efficiency and driving revenue growth.At Aircall, we believe in empowering teams to work smarter through automation and AI. Our AI Voice Agent takes care of routine calls, while AI Assist optimizes post-call tasks, allowing teams to focus on what truly matters. The outcome? Enhanced revenue, quicker resolutions, and scalable teams ready to take on challenges.With our headquarters in Paris and a strong presence in North America, we’re building a product that customers adore and a rapidly growing business supported by top-tier investors. Our commitment to AI-driven innovation spans multiple product lines, ensuring we stay at the forefront of customer communication solutions.Our Work Culture: We prioritize customer obsession, data-driven strategies, and meaningful results. At Aircall, ownership, learning, and a balance of pace and thoughtfulness are key. If you thrive in a collaborative, fast-paced environment where trust and impact are paramount, you’ll find your place with us.We are seeking a passionate and dedicated Senior Software Engineer to join our Workspace team as a Desktop Specialist.As the primary architect of our flagship product, the Workspace, you will oversee the design, development, and deployment of our Electron application. Your role will be critical in ensuring a seamless and native-grade experience for our users by effectively bridging our web application with the operating system.Your day-to-day responsibilities will include advocating for best practices, mentoring fellow engineers, and maintaining a focus on quality, agility, and excellence in our delivery processes.

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.

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 us in revolutionizing the shopping experience through AI-powered conversations.At Gorgias, we are pioneering a platform that transforms customer interactions into meaningful relationships. Our vision is to create a unified AI agent that assists, sells, and re-engages customers at every touchpoint in their journey. We believe that Conversational Commerce is the future of eCommerce, and we are at the forefront of this exciting shift.Our mission is to ensure that every brand interaction is personal, seamless, and intelligent. By merging our extensive product knowledge with cutting-edge AI technology, we aim to make the shopping experience feel increasingly intuitive and connected.To achieve this, we are committed to:Quality: Crafting authentic, brand-aligned conversations.Experience: Ensuring a smooth shopping journey from chat to checkout.Re-engagement: Fostering personal dialogues instead of intrusive marketing.With the rapid evolution of AI in retail, Gorgias is laying the groundwork for the next decade of eCommerce. We envision a future where every brand has its intelligent agent, and every customer feels valued and understood.Join us in making Conversational Commerce a reality.Team & ContextGorgias is an AI-first company dedicated to developing innovative products driven by large language models (LLMs) and agent-based systems. We are the leading conversational commerce platform for Shopify merchants. Our AI Journey team is focused on enhancing the marketing aspect of our vision with AI-driven outbound conversations that engage shoppers through various channels, primarily SMS.Our product is actively utilized by merchants today, processing hundreds of millions of shopper events. We are scaling our operations to enhance AI reliability at higher volumes, broaden our shopper engagement capabilities, and solidify our systems for robust production loads. The most intriguing challenges lie ahead.This role is positioned at the nexus of product engineering and applied AI, concentrating on the development of reliable, scalable, and impactful LLM-powered experiences in production.About the RoleIn this role, you will have the opportunity to: Develop and scale production AI features utilized by thousands of merchants. Engage directly with LLMs, prompts, and agent workflows within a live product setting. Influence the architecture of AI systems as we continuously enhance our platform.

Company: Veepee Location: Paris About Veepee Veepee has shaped online flash sales in Europe since 2001. Working with more than 7,000 brands, the company offers exclusive products at limited-time discounts, covering categories like fashion, home goods, wine, travel, and beauty. In 2024, Veepee reached a turnover of €3.3 billion and employs 5,000 people across 10 countries. Role Overview: Senior AI Engineer The Senior AI Engineer will join the VeepeeTech team to design and implement Generative AI solutions. The focus is on improving user experience with hyper-personalization and driving operational improvements in areas such as pricing, fraud detection, and sales or media production. Main Responsibilities Lead end-to-end AI projects, from requirements analysis and stakeholder engagement to data ingestion, model fine-tuning, delivery, and ongoing monitoring. Work closely with product managers, developers, architects, data scientists, and DevOps specialists. Deploy AI solutions both on-premise and using cloud-based large language model (LLM) services. What We’re Looking For Extensive hands-on experience with NLP and LLM architectures. Proficiency in modern deep learning frameworks. Strong background in statistics and mathematics. Proven record of deploying AI models into production at scale. At least one significant project involving LLMs. Genuine interest in modeling and problem-solving.

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.

About the Codex Deployment Engineering Team The Codex Deployment Engineering team at OpenAI partners with clients to help them integrate AI-powered coding tools into their development workflows. The team works with a range of organizations, from startups to global enterprises, supporting software planning, development, and delivery. Collaboration is at the heart of this work, with a focus on helping engineering teams improve their processes and outcomes using OpenAI’s technology. Role Overview: AI Deployment Engineer OpenAI is hiring an AI Deployment Engineer in Paris, France. This role combines technical expertise with creativity and a strong interest in developer productivity. The position involves working directly with engineering leaders and practitioners to design, validate, and scale advanced AI workflows. Much of the work centers on using Codex to build demos, integrations, and automations that clients will use in production. This is a cross-functional position that blends technical architecture, product thinking, and client engagement. The AI Deployment Engineer collaborates with teams across Sales, Solutions Engineering, Product, Applied Engineering, and Codex, representing customer needs and helping shape product direction. The goal is to accelerate the deployment of intelligent coding systems at leading companies worldwide. Main Responsibilities Serve as the main technical contact for OpenAI Codex with client engineering teams, embedding closely to help establish and optimize coding workflows. Work with clients to design and implement AI-enhanced development processes, from early prototypes through to scalable production systems. Develop high-quality demos, reference implementations, and workflow automations using Codex as a core tool. Lead workshops, technical deep dives, and hands-on training sessions to support safe and effective adoption of AI coding tools within engineering organizations. Contribute technical content, such as examples, guides, patterns, and best practices, to the OpenAI Cookbook, supporting the broader developer community. Gather and analyze feedback from real-world customer deployments, turning insights into actionable product proposals and internal recommendations. Advise clients on how AI coding tools can improve their Software Development Lifecycle (SDL), influencing strategy and decision-making. This position is based in Paris, France.

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 a pioneering defense contractor dedicated to developing autonomous and scalable defense systems. Following our successful $200 million Series B funding round, which has positioned us at a valuation of $1.4 billion, we are actively expanding our teams and capabilities to deliver critical systems to allied forces.Our mission is driven by our core values: creating technologies that have a tangible impact, striving for excellence in all aspects of our work, setting ambitious goals, and tackling the most challenging technical obstacles. We operate in a high-pressure environment where rigor, ownership, and execution are paramount.At Harmattan AI, we design and implement state-of-the-art AI-powered defense systems. Our work is at the forefront of technology and national security—dynamic, high-stakes, and deeply mission-oriented.We are selective in our hiring, prioritizing urgency, precision, and a commitment to solving significant problems. If you are an expert in your field and motivated by making a real-world impact, we encourage you to apply.Even if you don't see a specific role that aligns perfectly with your experience, we welcome proactive applications from individuals who excel in high-responsibility environments and possess deep expertise in areas such as:Aerospace & Robotics – GNC, autonomy, flight software, mission planningEmbedded Systems & Hardware – FPGA, real-time systems, electronicsSoftware & AI – machine learning, perception, signal processingBusiness, Strategy & Operations – program execution, partnerships, international expansionWhat We’re Looking ForWe value candidates who:Set high personal standards for quality and technical excellenceDemonstrate ownership and agility in uncertain situationsChallenge assumptions, push boundaries, and deliver results under pressureAre inspired by complex challenges with significant geopolitical implicationsApplication RequirementsA resumeA brief message outlining your strengths and how you envision contributing to our missionWe meticulously review all applications and will reach out if there is a potential fit.

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.