libraries

Proton is seeking an engineer to design, build, and evolve Windows applications. You will own the full lifecycle from feature design to deployment, monitoring, and incident response. The role emphasizes collaboration with product teams to deliver secure, privacy-preserving software.Experience with .NET, WinUI (C#/XAML), and Rust core libraries is ideal....

DHL Supply Chain in Valencia seeks an Office Administrator who will maintain the carrier database, ensure data accuracy, and support compliance processes across the ECCE team. You will work with Power BI dashboards, SharePoint libraries, and MS Office 365 tools to produce timely reports and trainings for internal and external stakeholders.The role requires...

ASBIS is seeking an experienced Python Software Engineer to join our robotics projects. You will develop software for robotic stations, libraries, and backend services, collaborating with cross-functional engineering teams to deliver reliable, maintainable solutions.The role requires 5+ years of Python experience, Linux, Git, FastAPI, and messaging systems,...

Proton is seeking an engineer to design, build, and evolve Windows applications. You will own the full lifecycle from feature design to deployment, monitoring, and incident response. The role emphasizes collaboration with product teams to deliver secure, privacy-preserving software.Experience with .NET, WinUI (C#/XAML), and Rust core libraries is ideal....

Are you looking for a new challenge where advanced optimization meets real-world impact? We are looking for a Senior Optimization Scientist to join a cutting‑edge technology project within the aviation and travel sector, working on complex, high‑impact optimization problems. You will collaborate with cross‑functional teams to translate business needs...

👋 At NeuralTrust, we're looking for a Frontend Engineer to help us scale our platform and take our technology to the next level. If you're passionate about building robust backend systems and working at the intersection of AI and security — join us!🚀 About NeuralTrustWe’re a Barcelona-based startup building the future of AI and Agents security. Our...

Trading 212 in Spain is seeking a Senior Frontend Engineer to own complex frontend features end to end across web and mobile, using React and React Native with TypeScript. You will design durable libraries and optimize rendering, state management and performance. In a fast-moving, autonomous team with weekly releases, you will collaborate with product,...

Celonis in Madrid is seeking a Senior Frontend Software Engineer to design and build sophisticated user interfaces with Angular and TypeScript. You will own client-side architecture, contribute to component libraries, and drive frontend performance.Join a collaborative team working with product managers, UX/UI designers, and backend engineers to translate...

Institut Straumann AG in Madrid is seeking a Junior Software & CAD Library Engineer to combine software development, automation, 3D data, and dental CAD technology. You will automate creation, validation, and maintenance of dental CAD libraries.Based in Madrid, you will work with local Scrum teams and coordinate with Munich engineering; onboarding there....

Institut Straumann AG in Madrid is seeking a Junior Software & CAD Library Engineer to combine software development, automation, 3D data, and dental CAD technology. You will automate creation, validation, and maintenance of dental CAD libraries.Based in Madrid, you will work with local Scrum teams and coordinate with Munich engineering; onboarding there....

A leading AI-driven platform is seeking experienced machine learning specialists for part-time project-based opportunities. Contributors will design computational problems, require expert Python skills, and verify solutions with standard libraries such as Numpy and Pandas. Candidates should have at least 5 years of relevant experience and strong written...

Trading 212 is seeking a Staff Frontend Engineer to shape architecture across web and mobile, with a hands-on approach to complex production systems built in React and React Native. You’ll influence platform capabilities, shared libraries, and developer tooling while staying close to code.You’ll own decisions on boundaries, state flow, performance,...

Linear Rates Quant (Associate Level) – MadridSantander ( is evolving from a global, high-impact brand into a technology‐driven organization, and our people are at the heart of this journey. Together, we are driving a customer‐centric transformation that values bold thinking, innovation, and the courage to challenge what's possible. It's a chance for...

PandaDoc is hiring a Senior Design Engineer to sit at the intersection of design and engineering in the Growth track. You will turn explorations from design into production-grade React features in days, not sprints, shaping what Growth builds.You will build operations, patterns, and prompt libraries to let designers move at pace, and set the bar for what...

A dynamic tech company is seeking an experienced ML Engineer to work in a hybrid capacity in Barcelona, Spain. The ideal candidate will have strong programming skills in Python and extensive experience with libraries such as Scikit-learn and Pyspark. A bachelor’s or master’s degree in a relevant field is required, alongside at least 8 years of...

Allianz Technology in Barcelona is seeking a Frontend Developer to lead the development of Angular component libraries while contributing to backend tasks. You will work closely with cross-functional teams to ensure smooth integration and development of the Allianz Document Storage and Retrieval (ADSR). The ideal candidate has strong proficiency in Angular...

Banco Santander S.A. in Madrid seeks an AI Transformation Analyst to support the WM&I transformation using cutting-edge AI tools. You will design prompts, document use cases, prepare enablement materials and track adoption and impact across business teams.Responsibilities include coordinating with Data & AI, Technology, Risk and compliance during pilots,...

A global technology and consulting firm is seeking a Data Scientist to design intelligent solutions for Supply Chain decision-making. This role involves developing advanced analytics and AI models to enhance forecasting accuracy, optimize inventory levels, and drive operational efficiency. The ideal candidate will have hands-on experience with Python,...

Data Scientist – Core Modelling Madrid (Hybrid, 2 days onsite) Permanent €Our client is an IT consultancy operating on a global scale who are looking to hire a Data Scientist to join their Core Modelling team. Their clients operate in industries where they succeed based on the quality of predictions their operating models are based on. They are looking...

Celonis is a global leader in Process Intelligence, delivering technologies that turn data insights into actions. As a Senior Frontend Software Engineer, you will own client-side architecture, build scalable UI libraries, and ensure top-tier performance in Angular-based web apps.You will mentor junior engineers, collaborate with product, UX, and backend...