
Wallapop · Barcelona
Wallapop is a Barcelona based scale-up driven by the purpose to empower people to embrace a more conscious and human way of consumption. We believe in a world w...
Wallapop is a Barcelona based scale-up driven by the purpose to empower people to embrace a more conscious and human way of
consumption. We believe in a world where collaborative economy is mainstream. This is what drives us. 💫
Wallapop operates in Spain, Italy and Portugal, offering a catalogue of several hundreds of millions of products and services.
Powered by technical innovation and continuous improvement, we bring together the scale & trust of classifieds with the
marketplace’s convenience & reach. 🌱 Our mission is to enable a connected trade ecosystem, making 2nd-hand the norm through smart
use of technology.
The Challenge 🧩
Wallapop generates billions of data points daily. With a mature data infrastructure already in place, our Data Science and Machine
Learning area is gaining significant momentum. As we scale, we face the exciting challenge of taking our ML Platform to the next
level to support complex solutions in Personalization, Search, Trust & Safety, and Logistics. As an ML Engineer (MLOps), you will
contribute to the evolution of our ML Platform and MLOps practice. You will partner with Data Scientists, Data Engineers, and
DevOps to collaborate on a vision that balances innovation with reliability, ensuring our models scale efficiently to serve
millions of users.
What You Will Do 👇
will help execute the long-term vision and roadmap for MLOps.
scalable models efficiently.
standards.
effective.
What We’re Looking For 🔎
experimentation to monitoring.
and retrieval tuning.
(Pandas, Scikit-learn, TensorFlow/PyTorch).
What Would Be A Plus 🚀
Do note that all our jobs are 📍 Barcelona based. We follow a hybrid model where flexibility rules. We commit to a minimum of 6
days per month in the office. Each team self-organizes to decide on cadence and in-person/remote rituals.
Wallapop is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all
employees as we want Wallapop to be a place for everyone.
Additionally to the opportunity to contribute to an agile product set up and work together towards achieving our meaningful
What does the hiring process for this position look like? 👀 **Please, note that all interviews take place remotely over
hangouts.**
over your experience, motivation, and expectations. This usually takes 45-60 minutes.
usually takes 60-90 minutes.
cross-functional set-up. This usually takes 60 minutes.
usually takes 60 minutes.
confirmed in writing.
Ippon : cabinet de conseil et d’expertises en technologie, international et indépendant En quelques mots : 700 passionnés de tech, 12 agences dans le monde, 11 communautés d’expertise d’excellence, contributeur actif et sponsor de l'écosystème numérique, des publications soutenues et reconnues sur nos réseaux. Tes missions : Concevoir et mettre en œuvre des pipelines MLOps (CI/CD) sur Azure pour des projets de Machine Learning, Vision par ordinateur et/ou Traitement du langage naturel. Déployer et gérer des modèles de Machine Learning sur Azure en utilisant les services Azure Machine Learning, Azure DevOps et Kubernetes. Mettre en place des solutions de monitoring et d'alerting pour les modèles et l'infrastructure MLOps. Assurer la qualité du code et des modèles déployés (tests unitaires, tests d'intégration, etc.). Collaborer avec les équipes Data Science et les équipes métier du client. Contribuer à l'amélioration continue des pratiques MLOps au sein d'Ippon Compétences techniques requises : Expérience significative avec Azure Machine Learning : - Création et gestion d'espaces de travail. - Utilisation des services de calcul (clusters, machines virtuelles). - Déploiement de modèles en batch et en temps réel. - Connaissance des différents types de déploiement (points de terminaison gérés, Kubernetes). Maîtrise d'Azure DevOps : - Création et gestion de pipelines CI/CD. - Automatisation des tâches de build et de déploiement. - Intégration avec Git. Connaissance de Kubernetes : - Déploiement et gestion d'applications conteneurisées. - Orchestration et mise à l'échelle des workloads. Expérience avec les technologies de conteneurisation (Docker). Solides compétences en Python et dans les frameworks de Machine Learning (scikit-learn, TensorFlow, PyTorch). Compréhension des concepts MLOps (versioning, monitoring, réentraînement). Expérience avec au moins un projet Azure MLOps. Profil recherché : - Formation supérieure en informatique ou équivalent. - Minimum 1 an d'expérience en tant que consultant en MLOps - Excellentes capacités de communication et de travail en équipe. - Autonomie et proactivité. - Capacité à s'adapter à des environnements techniques complexes. Ippon c’est aussi : - Travailler en équipe au sein d'une communauté à la pointe des évolutions - Un suivi de proximité réalisé par ton manager - Devenir ceinture noire en MLOps grâce à notre programme d’accompagnement de carrière Blackbelt - Participer à nos apéros et divers évènements internes pour consolider la cohésion d’équipe
About us We are champions of rail, inspired to build a greener, more sustainable future of travel. Trainline enables millions of travellers to find and book the best value tickets across carriers, fares, and journey options through our highly rated mobile app, website, and B2B partner channels. Great journeys start with Trainline 🚄 Now Europe’s number 1 downloaded rail app, with over 135 million monthly visits and £6.3 billion in annual ticket sales, we collaborate with 270+ rail and coach companies in over 40 countries. We want to create a world where travel is as simple, seamless, eco-friendly and affordable as it should be. Today, we're a FTSE 250 company driven by our incredible team of over 1,000 Trainliners from 50+ nationalities, based across London, Paris, Barcelona, Milan, Edinburgh and Madrid. With our focus on growth in the UK and Europe, now is the perfect time to join us on this high-speed journey. Introducing the Trainline Machine Learning and AI Team 👋 Machine Learning and AI play an important role in Trainline’s mission to help millions of people make more sustainable travel choices every day. Our models and AI-powered systems support critical areas of our platform, from customer support agents and search recommendations to pricing, routing optimisation, personalised experiences and digital marketing. Our Machine Learning and AI teams own the full delivery lifecycle, from early ideas through to production systems that create measurable impact for our customers and the business. As MLOps Engineering Manager, you will help shape how we build, deploy and operate machine learning products at scale, working closely with ML Engineers, Data Engineers, Software Engineers, Data Scientists, Product Managers and stakeholders across Trainline. In this role as the MLOps Engineering Manager, you will... 🚄 * Build and lead a new team of MLOps Engineers, creating an environment where people can do their best work while delivering meaningful outcomes for customers and the business. * Define and evolve MLOps processes, tooling and infrastructure choices across the technology department, helping teams build scalable, reliable and maintainable machine learning and AI systems. * Own the deployment and operation of machine learning products, ensuring models and AI systems are production-ready, observable and able to support Trainline’s growth. * Partner closely with engineering, data science, product and data teams to bring strong engineering standards into machine learning delivery, while recognising the specific challenges of data, AI and ML systems. * Support the productionisation of batch and online machine learning models, including recommendation systems, classification and regression models, large language models and agent-based systems. * Promote high standards for experimentation, testing, monitoring and continuous improvement, helping teams learn quickly and make evidence-led decisions. * Contribute actively to Trainline’s AI and ML community, sharing knowledge, shaping best practice and supporting a culture of collaboration, curiosity and impact. * Help the team make thoughtful technology choices across cloud infrastructure, CI/CD, monitoring and MLOps tooling, with a focus on long-term maintainability and measurable business value. We'd love to hear from you if you have... 🔎 * Experience leading, managing or mentoring engineers, with a thoughtful and inclusive approach to developing people, building teams and supporting delivery. * Strong experience productionising machine learning models at scale, ideally across both batch and online use cases such as recommendation systems, classification models, regression models, large language models or AI agents. * A good understanding of the machine learning development lifecycle, including data extraction, feature engineering, modelling, evaluation, deployment and ongoing monitoring. * Experience with cloud infrastructure, ideally AWS, alongside DevOps technologies and practices such as Docker, Terraform, CI/CD pipelines and infrastructure-as-code. * Familiarity with MLOps tools and practices such as MLflow, Airflow, model monitoring, API monitoring, data validation, data drift detection, autoscaling and access management. * Strong Python experience, with helpful knowledge of Spark or PySpark for working with large-scale data and machine learning systems. * An understanding of feature stores and related data technologies used to support operational machine learning products. * Clear communication skills, with the ability to work effectively across engineering, data, product and business teams, and explain technical concepts in an accessible way. More information: Enjoy fantastic perks like private healthcare & dental insurance, a generous work from abroad policy, 2-for-1 share purchase plans, an EV Scheme to further reduce carbon emissions, extra festive time off, and excellent family-friendly benefits. We prioritise career growth with clear career paths, transparent pay bands, personal learning budgets, and regular learning days. Jump on board and supercharge your career from day one! We're operating a hybrid model and ask that Trainliners work from the office a minimum of 60% of their time over a 12-week period. We also have a 28-day Work from Abroad policy. Our values represent the things that matter most to us and what we live and breathe everyday, in everything we do: * 💭 Think Big - We're building the future of rail * ✔️ Own It - We focus on every customer, partner and journey * 🤝 Travel Together - We're one team * ♻️ Do Good - We make a positive impact We know that having a diverse team makes us better and helps us succeed. And we mean all forms of diversity - gender, ethnicity, sexuality, disability, nationality and diversity of thought. That's why we're committed to creating inclusive places to work, where everyone belongs and differences are valued and celebrated. Interested in finding out more about what it's like to work at Trainline? Why not check us out on LinkedIn, Instagram and Glassdoor!
IT-bemanning är ett Stockholmsbaserat IT-konsultföretag, specialiserat på att leverera kvalitativ kompetens inom området IT-support, IT-drift samt IT-rekrytering. Vi är ett personligt IT-konsultföretag som värdesätter den enskilda konsultens egenskaper. Har du de rätta egenskaperna - social, driven och tävlingsinriktad så kan vi ge dig de rätta förutsättningarna för ett roligt, stimulerande och utvecklande arbete som konsult hos någon av våra kunder. IT-bemanning är ett dotterföretag till IT-konsultföretaget Xperta AB och som är specialiserade inom området IT-infrastruktur. Om uppdraget Become part of the Flexibility (VPP) team, which builds a state-of-the-art virtual power plant solution based on pooling fl exible residential DERs (e.g. batteries and EVs). By utilizing accurate forecasts and intelligent control, this solution unlocks the direct market participation of household DERs in a robust way. This service, which employs both deterministic steering and data-driven forecasting algorithms, is continually being enhanced and scaled to keep pace with the ever-increasing number of customers using this service. The Flexibility team is looking forward to growing together with you and bringing this feature to many more customers. Experience & Mindset ● Production-Grade Track Record: You have hands-on experience working on real-world projects with a proven history of delivering robust data solutions into production. ● Focus on Stabilization: You take full ownership of system reliability, actively monitoring and stabilizing workfl ows to ensure continuous, high-quality operations. ● Time-Series Expertise: You are comfortable working with large-scale time-series data and deeply understand the unique structural and processing challenges it presents. Technical Skills & Core Stack ● Programming & Data Wrangling: You have solid experience writing clean, maintainable code for complex data manipulation and transformation tasks. While our forecasting ecosystem relies on Python, Polars, and Pandas, at gridX, our main programming language is Go. Strong profi ciency in equivalent languages or data wrangling frameworks is highly welcome. ● Database Mastery: You command strong SQL skills. We rely heavily on ClickHouse—experience here is a highly valued asset. ● Cloud & Infrastructure: You have practical experience provisioning and managing scalable infrastructure using AWS, Kubernetes, and Terraform. MLOps & Orchestration ● Workfl ow Management: You are experienced in building and orchestrating complex data pipelines and ML workfl ows. We utilize Metafl ow, Argo, and MLfl ow, but practical experience with any comparable orchestration and model lifecycle tools is fully transferable. ● Rigorous Validation: You thoroughly test, validate, and benchmark models and data products prior to deploying them into live environments. ● Observability: You maintain clear visibility over production systems and possess practical experience setting up metrics and alerting dashboards using Grafana. Välkommen med din ansökan!