Senior UX Designer

Zartis is looking for an experienced Senior UX Designer to help develop innovative, AI-powered digital platforms for a client operating in the global online marketplace industry.

This is a fully remote opportunity for professionals based in Latin America who want to work at the intersection of user experience design, artificial intelligence and modern front-end development.

You'll join a distributed team working on experimental digital products, including a new service marketplace platform being developed from the ground up.

Unlike projects built around established systems and legacy requirements, this initiative offers an opportunity to explore new approaches to product development, experiment with AI technologies and shape the user experience of an entirely new platform.

The ideal candidate combines advanced UX expertise with strong technical knowledge, practical AI experience and the ability to make independent design decisions.

What You'll Do

Design AI-Powered Digital Experiences

You'll contribute to the development of experimental platforms that incorporate artificial intelligence into modern digital products.

Your responsibilities will include:

• Designing intuitive user experiences for AI-powered applications.

• Exploring new approaches to building digital products with AI.

• Translating complex technical requirements into accessible interfaces.

• Helping define UX strategies for experimental product initiatives.

• Applying user-centered design principles throughout development.

• Supporting rapid experimentation and iterative product improvements.

Build a New Service Marketplace Platform

You'll help shape the user experience of a new marketplace product being developed without the constraints of an existing legacy platform.

Key responsibilities include:

• Contributing to the UX architecture of a new service marketplace.

• Designing user journeys, workflows and interactive experiences.

• Helping establish scalable design patterns from the beginning.

• Supporting integration with the client's existing authentication systems and applications.

• Designing experiences that can operate as part of a broader digital ecosystem.

• Collaborating with technical teams to ensure design solutions are feasible and maintainable.

Collaborate With Front-End Development Teams

This position requires a stronger technical background than many traditional UX design roles.

You'll work closely with engineers and contribute to discussions involving modern front-end technologies.

The project's technology stack includes:

• React

• Next.js

• GraphQL

You'll be expected to understand front-end development constraints and work effectively with developers to deliver functional product experiences.

Strong front-end capabilities are particularly important because the role may involve adapting responsibilities to meet changing project needs.

Apply Advanced UX Methodologies

You'll use established UX practices to guide design decisions and improve product quality.

Your work may involve:

• Applying design thinking and Lean UX methodologies.

• Using Jobs to Be Done frameworks to understand user needs.

• Creating wireframes, prototypes and detailed interaction designs.

• Contributing to design systems and reusable components.

• Applying accessibility standards, including WCAG.

• Designing responsive experiences across devices.

• Supporting user research and usability testing.

• Communicating design decisions to technical and business stakeholders.

Support Experimentation and Product Innovation

The project involves time-boxed experiments intended to help the client understand how AI can transform its approach to software development.

You'll contribute your expertise not only to product delivery but also to the evaluation of new workflows and development practices.

This requires initiative, adaptability and the ability to make informed decisions in an evolving environment.

What You'll Need

Zartis is seeking a highly experienced UX professional with strong design fundamentals, front-end knowledge and substantial experience working with artificial intelligence.

Essential Qualifications

• At least 9 years of professional UX design experience.

• Experience operating at a senior level or above.

• Strong front-end development capabilities.

• Significant previous experience with AI technologies and AI-assisted development.

• Experience designing and developing digital products from the ground up.

• Advanced proficiency in Figma, Sketch or Adobe XD.

• Experience with interactive prototyping tools.

• A strong portfolio demonstrating the complete end-to-end design process.

• Knowledge of design thinking, Lean UX and Jobs to Be Done.

• Understanding of responsive design and WCAG accessibility standards.

• Experience working with design systems and design tokens.

• Familiarity with user research and usability testing methods.

• Understanding of HTML, CSS and front-end implementation constraints.

• Ability to use AI tools effectively, including Claude.

• Strong communication, collaboration and decision-making skills.

Research and Testing Tools

Experience with user research and usability platforms is valuable, including:

• Maze

• UserTesting

• Hotjar

• Optimal Workshop

Candidates should be comfortable using research findings and usability insights to guide product decisions.

Nice-to-Have Skills

Additional experience in the following areas would be beneficial:

• UX writing and interface microcopy.

• Motion design and micro-interactions.

• Data-driven design and product analytics.

• A/B testing and experimentation.

• Experience in fintech, healthtech, eCommerce or SaaS.

• Facilitating design sprints and collaborative workshops.

• Leading co-creation sessions with stakeholders.

About the Project

You'll work on an initiative for a company that operates marketplace websites across multiple international markets.

The client is establishing a new business entity to experiment with AI-powered software development and explore different approaches to building digital products.

The initiative includes a service marketplace platform designed from the ground up, with opportunities to rethink traditional development workflows and product architecture.

An important consideration is ensuring that the new platform can integrate with existing applications and login systems.

The project is structured around time-boxed experiments running through the end of the year, with the objective of generating insights that may influence the client's broader technology strategy.

The role therefore combines hands-on UX delivery with strategic thinking, technical collaboration and experimentation.

Benefits and Working Environment

Zartis offers a remote-first environment with opportunities for professional development, mentorship and collaboration across international teams.

Benefits Include

• 100% Remote Work: Work remotely from Latin America.

• Work-From-Home Allowance: Monthly financial support for remote working expenses.

• Career Development: Structured professional growth supported by 360-degree feedback.

• Dedicated Training Time: Time allocated during the working week for technical learning.

• Learning Resources: Access to training opportunities such as Pluralsight, Educative.io, books, conferences and events.

• English Classes: Opportunities to develop professional language skills.

• Mentorship Program: Participate as a mentor, mentee or both.

• Wellbeing Support: Access to the Zartis Wellbeing Hub through Kara Connect, including sessions with mental health professionals, nutritionists, physiotherapists and fitness coaches.

• International Collaboration: Work with colleagues from different countries and professional backgrounds.

• Team Activities: Online events, webinars and opportunities to connect with coworkers.

About Zartis

Zartis is a global technology consulting company specializing in software engineering, AI transformation and digital product development.

The company partners with organizations to design, build and scale technology solutions that address complex business challenges.

Its expertise includes AI-powered platforms, secure API architectures and cloud-native engineering.

With engineering teams across Europe, the Middle East, Africa and Latin America, Zartis works with clients in industries including financial services, healthcare, life sciences, energy and climate technology.

The company emphasizes technical excellence, collaboration and continuous learning.

For experienced UX designers, Zartis offers opportunities to contribute to innovative technology projects while working alongside multidisciplinary engineering teams.

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How to Apply

Interested candidates should prepare an updated resume and a portfolio demonstrating extensive UX design experience.

Your portfolio should ideally highlight:

• End-to-end UX design projects.

• Experience designing complex digital products.

• AI-powered applications or AI-assisted workflows.

• Design systems and scalable interface components.

• Collaboration with front-end development teams.

• User research, testing and iterative improvements.

• Examples of products developed from initial concept through delivery.

Candidates should also be prepared to discuss their experience with AI technologies, modern front-end frameworks and working in fast-paced, experimental development environments.

Zartis may use AI-assisted tools during recruitment to support application reviews and assessments. Final hiring decisions are made by human recruiters.