usability

Constructor.io is seeking a backend engineer focused on Python services to own production backend systems for experiments, with occasional UI work. You’ll contribute to scalable reporting pipelines, improve reliability, and collaborate with Search/Recommendations teams on data-heavy workloads. The role emphasizes correctness, observability, and product...

Ayvens is seeking a User Researcher to drive user-centered decision making across our digital products. You will plan, conduct, and communicate high-quality research to inform design and product strategy. You will collaborate with product managers, designers, and engineers, selecting methods such as interviews, usability tests, surveys, and analytics to...

Ethos is seeking experienced behavioural insights researchers to train AI models on professional documents, spreadsheets, and slide decks. The role focuses on creating, evaluating, and refining outputs across moderated usability tests, interviews, surveys, and journey maps.You’ll own the full study lifecycle, applying thematic coding, statistics, and...

Описание Ubisoft is a global leader in gaming, creating original gaming experiences across its worldwide teams. Ubisoft Barcelona is part of Ubisoft's international network of production studios and has developed expertise in producing video games across a wide variety of genres and platforms for over 20 years. Задачи * Define end-to-end user...

bunch is seeking a Staff Frontend Engineer to shape architecture, quality, and developer experience across the product surfaces used by customers and internal teams.You will lead the migration from Svelte to React, maintain and evolve our design system with the frontend guild, and drive cross-team initiatives while mentoring engineers and improving...

Trivelta, a Barcelona-based AI-native software platform powering sportsbook and gaming operators, seeks a Product & Digital Operations professional to deepen product understanding, improve usability, conversion, and operational efficiency across the customer journey.You will bridge local market needs with internal teams, monitor performance with dashboards,...

Trivelta, a Barcelona-based AI-native software platform powering sportsbook and gaming operators, seeks a Product & Digital Operations professional to deepen product understanding, improve usability, conversion, and operational efficiency across the customer journey.You will bridge local market needs with internal teams, monitor performance with dashboards,...

Constructor.io is seeking a backend engineer focused on Python services to own production backend systems for experiments, with occasional UI work. You'll contribute to scalable reporting pipelines, improve reliability, and collaborate with Search/Recommendations teams on data-heavy workloads.The role emphasizes correctness, observability, and product...

Lever, Inc. is seeking a Full-Stack Developer / Shopify Expert (eCommerce CRO Focus) based in Spain.You will own performance, usability, and conversion for high-traffic Shopify storefronts, implementing improvements and running experiments to drive measurable results. Role combines hands-on Shopify development with CRO, performance engineering, and customer...

Quantion, a Business Digital Transformation services company, seeks senior profiles to design and build AI-powered engineering capabilities and reusable components. You will develop integrations with AI models, tools, and software delivery platforms, while enabling teams to adopt AI-driven software development practices.Join a multinational team to deliver...

bunch is seeking a Staff Frontend Engineer to shape architecture, quality, and developer experience across the product surfaces used by customers and internal teams. You will lead the migration from Svelte to React, maintain and evolve our design system with the frontend guild, and drive cross-team initiatives while mentoring engineers and improving...

Senior Sales Executive, Medical Device Consulting Services, EMEA (Remote)Emergo by UL's Human Factors business unit is a global leader in Human Factors Engineering (HFE) services, with team members in the US, Europe, and Asia. Emergo by UL's HF staff consists of human factors professionals who perform research, design, and usability studies primarily for the...

Quantion, a Business Digital Transformation services company, seeks senior profiles to design and build AI-powered engineering capabilities and reusable components. You will develop integrations with AI models, tools, and software delivery platforms, while enabling teams to adopt AI-driven software development practices. Join a multinational team to deliver...

Datavant in Barcelona is seeking a senior UX designer to shape Provider Console, a unified provider-facing platform connecting multiple products. You will define experience architecture, improve cross-product navigation, and reduce provider dependence on support through self-service flows. You will collaborate with PMs, engineering, and account teams, lead...

Dow Jones Barcelona is seeking a Lead Software Engineer to design, architect and deliver a platform supporting web, mobile and AI across B2C and B2B offerings. You will lead engineers, partner with product, and ensure scalable, reliable products with strong deployment practices. You will drive architecture, collaborate with Dow Jones and News Corp teams, and...

Welocalize, a Welo Global brand, seeks a native Telugu speaker for on-site AI model evaluation and localization QA. You will test how the pre-release model performs on client devices, ensuring language accuracy, usability, and parity with English flows. Work onsite in a private, secure Welocalize office space with no remote work for this program. Strong...

Fever in Madrid is seeking a hands-on, project‑driven professional to manage the full life cycle of large events from contract signing to closing. You’ll coordinate with event organizers and internal teams, ensuring timely delivery and clear documentation. You’ll work with product and engineering to translate needs into Fever usability requirements,...

Welocalize, a Welo Global brand, seeks a native Telugu speaker for on-site AI model evaluation and localization QA. You will test how the pre-release model performs on client devices, ensuring language accuracy, usability, and parity with English flows. Work onsite in a private, secure Welocalize office space with no remote work for this program. Strong...

Maxon Barcelona is seeking a Salesforce Frontend Engineer to design and build modern frontend solutions within our Salesforce ecosystem, enhancing global Sales and Marketing platforms with a focus on performance and usability. You will develop and maintain Lightning Web Components, integrate with Apex and external APIs, collaborate with backend and business...

Barcelona Supercomputing Center is seeking a Workflow Management Software Engineer (RE2) to enhance end-to-end workflows for global Earth system modeling on high-performance computing platforms. The role focuses on developing and operating modeling workflows, improving usability, and supporting users across the European HPC ecosystem. Key duties include...