Conversational AI Back-End Engineer

Join Celonis as an Associate Applied AI Engineer in our innovative Orbit Program, where you'll collaborate with a dynamic team to develop cutting-edge AI solutions. This role offers a unique opportunity to work at the forefront of technology, applying your skills to real-world problems and making a significant impact on our clients' operations.

Join Celonis as an Associate Applied AI Engineer in the APAC region, contributing to our innovative Orbit Program. This role offers an exciting opportunity to work at the forefront of applied artificial intelligence, collaborating with a dynamic team to drive impactful solutions.

Join Aircall as a Senior Software Engineer specializing in Applied AI for Corporate Systems. In this pivotal role, you will leverage cutting-edge AI technologies to enhance our corporate systems, driving innovation and efficiency across the organization. You will collaborate with cross-functional teams to design, develop, and implement robust software solutions that meet the dynamic needs of our business.

NielsenIQ is hiring a Research Scientist in Madrid to focus on Generative AI and applied research. This position is dedicated to pushing AI capabilities further by conducting hands-on research and building new models that address practical challenges. What you will do Advance generative AI through original research and experimentation Develop and refine models for real-world applications Work closely with colleagues from different backgrounds to drive progress in applied AI Collaboration This role involves working with a multidisciplinary team. Expect regular collaboration with experts in other fields to ensure that new AI solutions are grounded in practical needs and can be effectively implemented.

Feverup seeks an Operations Transformation & AI Associate based in Madrid. This position centers on developing operational strategies and using artificial intelligence to enhance how the business runs. Role overview The associate will help design and implement changes that make company operations more efficient. Applying AI tools and methods, the work aims to simplify processes and contribute to Feverup’s growth plans. Key focus areas Shape and refine operational strategies Apply AI solutions to real-world business challenges Support projects that streamline workflows and drive company progress Location This role is based in Madrid.

We are seeking a highly skilled Senior AI Operations Engineer to join our innovative team at dlocal. In this pivotal role, you will leverage your expertise in AI and machine learning to enhance our operational processes, ensuring efficiency and effectiveness across our systems. You will collaborate closely with cross-functional teams to implement AI-driven solutions that will optimize our services and improve our overall performance.

Role overview The Senior AI Engineer at zooplusse will design and develop advanced AI models to address business objectives and enhance customer solutions. Collaboration with colleagues from various departments is a key part of this role, supporting the delivery of impactful AI-driven projects. What you will do Develop and improve AI models for practical, real-world use cases Partner with cross-functional teams to implement AI solutions Take the lead on AI initiatives that shape business results and customer experiences Location This role is based in Madrid.

Join Causa Prima as a Senior AI / LLM Agent Engineer, where you will play a pivotal role in shaping our innovative product. You will design, develop, and manage autonomous agents that facilitate various critical business processes, including invoice validation, dispute resolution, inter-company negotiations, and cash flow optimization.Your ResponsibilitiesAgent Architecture — Create a robust multi-agent system focusing on agent boundaries, event contracts, orchestration patterns, and the integration of LLM reasoning with deterministic enforcement.Document Processing Pipeline — Develop a system for the ingestion, classification, and structured extraction of financial documents such as invoices and contracts using LLM-based parsing and vision models.Validation & Anomaly Detection — Implement business rule checks, three-way matching, and pricing discrepancy detection to ensure data integrity and identify anomalies over time.Integration Framework — Design integration solutions connecting with Gmail, Google Drive, Slack, banking APIs, crypto wallets, and accounting platforms, including robust authentication and data normalization processes.Knowledge Graph — Build a Neo4j context graph to capture implicit business knowledge, focusing on entity extraction and provenance tracking.Multi-LLM Strategy — Develop a strategy for selecting models per agent, establishing structured output contracts, and creating evaluation frameworks.Compliance & Security — Design systems that operate within a zero-trust model, ensuring agents verify against original data and manage outbound content securely to mitigate risks.QualificationsA minimum of 3 years of experience with Python and/or TypeScript in a production environment.Strong systems design acumen, with a focus on agent boundaries and failure modes.Proven hands-on experience with LLM-powered systems and document AI technologies.Ability to articulate when to use LLMs versus rules engines or traditional ML approaches.Experience in designing data pipelines and integration architectures in production.A strong understanding of security principles and their implications in system design.

Role overview Ebury is hiring an AI Platform Engineer for the Data Platform Engineering team based in Madrid (or Malaga). This hybrid position requires four days per week onsite and one day remote. The team is central to Ebury’s growth, focusing on building and maintaining the infrastructure that powers AI and agentic products throughout the company. What you will do Develop and maintain the Ebury Data Platform as part of the Data Platform Engineering team. Help build the Agentic Data Plane (ADP), which serves as a unified and governed interface for AI and agentic products. Design and implement features to simplify data communication and access, while maintaining governance, lineage, traceability, and replayability. Work closely with cross-functional domain teams to support secure and efficient deployment of AI and agentic products at scale. Work environment Hybrid schedule: four days onsite in Madrid (or Malaga), one day remote. Team values innovation, collaboration, and strong problem-solving skills. Supportive culture where team members are encouraged to grow and contribute to Ebury’s mission.

Are you passionate about leveraging AI technologies to enhance backend systems? Join docplanner as a Backend Engineer specializing in AI Integration. In this role, you will collaborate with a dynamic team to design, develop, and implement innovative solutions that integrate AI capabilities into our existing systems.Your expertise will contribute to optimizing processes and improving user experiences across our platforms. If you're ready to take your backend engineering skills to the next level while working with cutting-edge technology, we want to hear from you!

Join our innovative Notebooks team as a Staff Software Engineer specializing in AI/ML. At Datadog, our Notebooks are versatile tools for on-the-fly data analysis, collaborative investigations, and technical documentation. They facilitate seamless interaction between agents and users. Our team is at the forefront of developing AI-enhanced workflows for natural language data analysis, automated graph generation, and in-depth investigations. In this role, you will serve as a technical leader, dedicated to creating cutting-edge AI-powered functionalities. We are in search of a product-oriented ML engineer who possesses strong technical acumen, exceptional communication skills, and a proven history of spearheading impactful projects from inception to completion.At Datadog, we cherish our office culture for its collaborative spirit and the creativity it fosters. We adopt a hybrid work model to support our Datadogs in achieving a work-life balance that aligns with their unique needs.

About the Role airapps is hiring an AI/ML Engineer in Madrid. This position focuses on building and improving machine learning solutions that turn data into practical insights. The work involves close collaboration with colleagues from different teams to refine current applications and design new models that support the company’s technology goals. What You Will Do Develop machine learning models to solve real business problems Work with cross-functional teams to improve existing applications Create new solutions that advance airapps’ technology Location This role is based in Madrid.

Join Datadog, a leader in cloud monitoring and observability, where we harness the power of AI to enhance our platform's capabilities. Our mission is to streamline monitoring, accelerate incident resolution, and ensure data integrity for cloud applications. The Deployment Gates team is at the forefront of creating innovative, customer-centric systems that determine the readiness of software for production. These systems play a crucial role in CI/CD pipelines, utilizing observability data to answer a pivotal question in software delivery: Is this deployment safe to proceed based on our current knowledge? As a Senior AI Engineer, you will: Advance Deployment Gates from static rules to AI-driven decisions, leveraging Datadog telemetry to identify and prevent faulty changes before they reach users. Lead the design and implementation of progressive deployment automation, starting with conservative AI rules and evolving towards adaptive gates that learn from incidents and organizational behaviors. Create frameworks for autonomous remediation, linking code changes to production issues, enabling capabilities to block and roll back unsafe deployments while suggesting fixes and enforcing policies. This role is ideal for someone with a strong product mindset, as you will engage in the entire lifecycle from problem discovery and user experience to delivering reliable, scalable production systems. At Datadog, we value our office culture - the relationships we build, the creativity we foster, and the collaboration that arises from working together. We embrace a hybrid work model to help our employees achieve a balance that suits their lifestyle.

Project OverviewAt the Telco Hub in Madrid, we are at the forefront of integrating IT and telecommunications, developing and expanding Telco as a Platform (TaaP) utilizing our unique layered cloud infrastructure. Our teams are organized into cross-functional and cross-border squads, delivering avant-garde services to Europe's leading telecommunications operators.Our goal is to provide an unparalleled customer experience grounded in three foundational principles: Cloud-Based – Leveraging cutting-edge technologies for enhanced scalability and performance. Automated – Enhancing efficiency through AI, automation, and DevOps methodologies. Sustainable – Creating a future-ready, environmentally sound infrastructure.We're seeking exceptional engineering talent who are keen to advance both technically and professionally within a vibrant and collaborative setting. If you're passionate about influencing the future of telecommunications, join us!The Voice & Messaging (T-VM) unit within Deutsche Telekom Technik GmbH is entrusted with overseeing all voice and messaging platforms across Deutsche Telekom's fixed and mobile networks throughout their lifecycle. The platforms under T-VM are integral to a substantial portion of Telekom Deutschland's core operations, and our mission is to maintain critical factors of stability, quality, innovation, and efficiency. The ACS Squad (Announcement-, Control & Supportsystems) manages the complete lifecycle of essential IMS components within DT Technik.Job Responsibilities:Managing IMS-MRF (Media Resource Function) deployed on Kubernetes.Overseeing OneiDNS, a cloud-native DNS service for all IMS nodes in fixed and mobile networks, deployed on Kubernetes.Administering VoIP Support Systems, a VMware-based application landscape within the IMS fixed network provisioning chain.Operating as a DevOps team, taking full accountability from design and engineering through to deployment and operational management.Addressing the next significant challenge of developing a new AI Calling system, built on DT Technik’s CaaS Kubernetes platform, to facilitate real-time speech processing and translation within IMS call flows.We are looking for a motivated and technically proficient colleague to join our team and contribute to this exciting journey.

Ebury empowers ambitious businesses to achieve global expansion, mirroring this ethos in our approach to our team. We champion innovation, collaboration, and problem-solving, creating an inclusive environment where everyone feels valued, supported, and empowered to thrive.If you're a collaborative professional eager to revolutionize global business operations, connect with us. We would be delighted to discuss how Ebury can accelerate your career trajectory and enable you to influence the future.Join Our Data Team as a Senior Data Engineer - AI PlatformHybrid Work Model: 4 days in the office, 1 day remoteBecome a part of Ebury's Data Team in our Madrid or Málaga office.The success of Ebury's strategic growth plan heavily relies on our Data team, and we are on the lookout for a skilled Data Engineer - AI Platform to enhance our Data Platform Engineering team!Our mission centers on developing, maintaining, and enhancing Ebury's Data Platform, with a current focus on constructing the Agentic Data Plane (ADP): a cohesive, governed interface layer for AI and agentic products that simplifies data communication and access while ensuring governance, lineage, traceability, and full replayability.As an AI Platform Engineer, you will collaborate closely with the Data Platform team and cross-functional domain teams to design and deliver the platform capabilities that allow Ebury to safely deploy AI and agentic products at scale.What We Offer:Attractive salary and benefits packagePerformance-based discretionary bonusOngoing personal development through training and certificationSupportive of Open Source principles, encouraging contributions to both internal and external projects

Join Aircall, a leading unicorn in the customer communications sector, revolutionizing how over 22,000 companies engage with their customers globally. Our innovative AI-powered platform integrates voice, SMS, WhatsApp, and AI into a single, compelling workspace, designed to drive revenue, enhance issue resolution, and empower customer-facing teams.Our success is rooted in a clear vision: enable teams to work smarter, not harder. Our AI Voice Agent automates routine calls, AI Assist simplifies post-call tasks, and AI Assist Pro provides real-time insights, allowing individuals to perform at their peak. This leads to increased revenue, quicker resolutions, and scalable teams that operate with confidence.Headquartered in Paris, with a robust North American base in Seattle, Aircall operates across dynamic cities including Madrid, London, Berlin, San Francisco, New York City, Sydney, and Mexico City. Our product is beloved by customers, and we are rapidly scaling, supported by top-tier investors and continuous AI enhancements across diverse product lines.At Aircall, you will be part of an evolving company that is ambitious, product-oriented, and execution-driven, where your efforts yield visible impact, swift decision-making, and genuine growth.Our Work Culture: We are deeply customer-focused, data-centric, and committed to achieving significant results. We encourage ownership, ongoing learning, and thoughtful pace. If you excel in a cooperative, fast-paced environment where trust and influence are paramount, you will thrive with us.We are seeking a motivated and passionate Senior AI Software Engineer to enhance our expanding engineering division and contribute to our engineering teams.As a Senior AI Software Engineer, your role will involve the design, development, deployment, and management of AI-driven features that provide substantial value to our customers. Your daily responsibilities will encompass maintaining operational excellence, leveraging metrics and observability, sharing best practices, and mentoring team members across the Engineering department.Quality, excellence, and agility are the bedrock of our delivery processes, and you will be a key player in enhancing these standards. Our development is based on NodeJS and Typescript back-end stacks, tailored to meet specific requirements and always hosted on AWS, creating resilient services that integrate seamlessly with our customers' critical business tools (CRM, Helpdesk, E-Commerce, etc.).

Role overview dlocal is seeking a Senior AI Engineer to join its Madrid office. The focus of this position is to build and enhance artificial intelligence solutions that strengthen the company's products and services. What you will do Design, implement, and improve AI algorithms for practical use cases Collaborate with cross-functional teams to address technical challenges Support the development and optimization of dlocal's AI systems Requirements Extensive experience in artificial intelligence and machine learning Strong problem-solving skills and a track record of delivering effective solutions Interest in exploring new technologies and working collaboratively Location This role is based in Madrid.

Join Groupon, a leading marketplace where customers explore new experiences and services daily, and where local businesses thrive. We have partnered with over a million merchants worldwide, connecting more than 16 million customers with deals across diverse categories. In a landscape often dominated by e-commerce giants, Groupon stands out as one of the few platforms genuinely committed to propelling local businesses forward based on performance.We are on an exciting journey to radically transform our business through a relentless focus on results. Despite having thousands of employees across multiple continents, we foster a culture that inspires innovation, rewards risk-taking, and celebrates success. Here, your impact can be immediate due to our scale and the rapid pace of our transformation. We blend the best of both worlds: we have the resources and scale of a large company, yet we empower individuals to have significant autonomy and drive meaningful change.About the RoleHybrid from Madrid or ValenciaAs a Full Stack AI Engineer, you will engineer the foundation of our proprietary internal platform that democratizes AI across the organization. This role goes beyond standard full-stack duties; you will construct the framework that enables various teams to develop autonomous AI agents. Your responsibilities will include designing reasoning flows, integration layers, and agent logic that empower AI to execute complex business tasks at scale. This is applied AI engineering: focusing on sophisticated system design and relentless execution rather than model fine-tuning. You will collaborate daily with a newly formed team of engineers and work closely with the AIGO team and cross-functional partners across Global Operations, Customer Satisfaction, and Engineering.

zooplusse is looking for a Senior AI Engineer to help shape the future of Agentic Commerce. This position is based in Madrid and centers on building advanced artificial intelligence solutions that improve customer interactions and streamline business operations. Role overview This role focuses on designing and implementing AI-driven systems for commercial applications. Collaboration with a skilled team is central, with a shared goal of developing technology that supports better customer experiences and more efficient processes. What you will do Develop and refine AI models tailored to Agentic Commerce use cases Work closely with colleagues to integrate new AI features into existing platforms Contribute ideas and technical expertise to drive innovation in customer-facing solutions Location This position is based in Madrid.