Product Designer (Part-time)
(Hybrid) Buenos Aires, Argentina
As a Product Designer at Appstack, you'll shape how mobile marketing teams experience our platform, from onboarding to their daily analytics and campaign workflows, working closely with Product and Engineering to turn complex data into clear, usable interfaces. You'll own the end-to-end design process for key product areas: research, flows, wireframes, and polished, production-ready UI, helping keep the experience consistent and intuitive as the platform grows. This is a part-time role, remote-first, with flexibility to organize your schedule as long as you stay closely synced with Product and Engineering.
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What is Appstack?
At Appstack, we are redefining how mobile apps grow through paid ads by providing access to reliable attribution and precise analytics. With our 'Enhanced App Campaigns' protocol, a state-of-the-art solution that enables advertisers to run app campaigns with superpowers, we are helping the most ambitious apps to scale and make more money.
Responsabilities
Design end-to-end user flows and interfaces for Appstack's analytics, attribution, and campaign management products
Turn complex data and workflows into clear, intuitive UI, working closely with data and engineering teams
Conduct user research and usability testing to validate design decisions
Build and evolve Appstack's design system to keep the platform consistent
Collaborate closely with Product and Engineering from discovery through shipping
Create wireframes, prototypes, and high-fidelity mockups in Figma
Iterate on designs based on user feedback, data, and business needs
Contribute to a strong design culture and best practices across the team
You might be a good fit if…
Education & experience
No formal education is required; you must be able to show your work through a portfolio.
2+ years of experience as a Product Designer, ideally in a SaaS product.
Technical skills
Strong proficiency in Figma (components, auto layout, design systems)
Solid understanding of UX principles, information architecture, and interaction design
Experience designing for data-heavy or dashboard-style products is a plus
Comfortable collaborating with engineers to ensure design feasibility and fidelity
Basic understanding of HTML/CSS is a plus (not required)
Soft skills
English fluency is required as the working language at Appstack.
Strong communication skills to present and defend design decisions.
Proactive mindset with a focus on delivering high-quality, user-centered solutions.
Attention to detail and consistency across the product.
Based in Buenos Aires, the role is hybrid-first, with an office in Palermo.
Comfortable with a part-time arrangement, available to sync regularly with the team during Buenos Aires working hours.
You are not a good fit if…
Attitude
You believe you already know everything and resist feedback.
You are satisfied with your current skills and don’t want to keep improving.
You prefer clever tricks over clarity and maintainability in your code.
Lack rigor
You do not review your own pull requests before asking for review.
You start coding without fully understanding the requirements.
You consider a task complete as soon as the code “works,” without caring about robustness or edge cases.
Why Join Appstack?
Learn a lot by working with the top 1% of tech talents
Opportunity to shape the technical foundation and future of a growing startup.
Work in a dynamic and collaborative environment with modern tools and technologies.
Drive meaningful impact by owning the platform's key features and shaping the user experience.