Lead Product Designer

Scrambly; Belgique; On-site; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Founding leadership role

Direct collaboration with Product &amp

Competitive compensation

Job summary

Scrambly S.r.l. seeks a Lead Product Designer to own the product design function end-to-end for web and mobile, shaping the experience across millions of users worldwide. In this hands-on leadership role, you’ll design core experiences while defining Scrambly’s design vision, strategy, standards, and culture.

Over time, you will grow an internal design team as the portfolio expands. You will partner with Product and Engineering to translate business goals and user needs into clear, user-centered

Qualifications

• 7+ years in product design for mobile-first consumer products.
• Portfolio demonstrating UX/UI craft and end-to-end product delivery.
• Experience as sole or lead designer with full ownership of design decisions.
• Hands-on experience with user research, usability testing, hypothesis-driven design, rapid prototyping and A/B testing.
• Experience mentoring designers or managing external partners.
• Ability to move fast without sacrificing quality and defend design decisions with leadership.

Responsibilities

• Own the experience across all mobile and web products, and make final design decisions.
• Drive discovery with Product through user research, data analysis, funnels, and session replays to form prioritized hypotheses.
• Design low-effort experiments and rapid iterations with Product and Engineering while maintaining quality.
• Deliver flows, prototypes, high-fidelity designs and interaction specs with pixel-perfect execution.
• Build and maintain Scrambly’s design language, components and patterns for consistency across platforms.
• Represent design in leadership discussions and challenge decisions that hurt the user experience.
• Lead the function by managing external partners and growing the internal design team as the product portfolio scales.

Skills

Mobile-first design

UX/UI craft

End-to-end ownership

User research

A/B testing

Mentoring designers

Tools

Figma

Mixpanel

InVision

Job description

About The Company

Scrambly is one of the fastest-growing adtech startups in the world, featured in the AppsFlyer Performance Index and Singular ROI Index in just 3.5 years.

We’re growing 250%+ YoY across revenue, team, product, and technology — fully bootstrapped and profitable.

We’re building the future of app discovery: a reward-powered alternative to the App Store and Google Play. Our loyalty-driven ecosystem connects millions of users with the world’s top apps and delivers unmatched, ROI-focused growth for mobile advertisers.

Our mission is to build a true alternative to traditional app stores — fueled by rewards and data — and create a new, performance-first growth engine for mobile app advertisers.

About The Role

As a Lead Product Designer at Scrambly, you will fully own the product design function end-to-end and be responsible for the quality, consistency, and impact of the user experience across all mobile and web products used by millions of users worldwide.

This is a hands‑on leadership role. In the initial phase, you will personally design core product experiences while defining Scrambly’s design vision, strategy, standards, and culture. Over time, you will build and lead an internal product design team and scale the design function as the company and product portfolio grow.

You will act as a strategic partner to Product and Engineering leadership, translating business goals, product metrics, and user needs into clear, user‑centered design solutions. You will have full ownership over design decisions and will be expected to proactively identify problems, propose solutions, and continuously raise the quality bar across the organization.

Your goal is to establish a world‑class product experience and turn Scrambly into a product people genuinely love to use every day.

What You’ll Do

• Own the experience. Take full responsibility for UX and UI across all mobile and web products, and make the final call on design decisions.
• Drive discovery. Work with Product to understand users through research, data, funnels and session replays, then turn insights into prioritized hypotheses.
• Experiment fast. Design low‑effort experiments and A/B tests with Product and Engineering, learn quickly and iterate without dropping quality.
• Set the craft bar. Deliver flows, prototypes, high‑fidelity designs and interaction specs, with pixel‑perfect execution on everything we ship.
• Build the system. Create and own Scrambly’s design language, components and patterns so design stays fast and consistent across platforms.
• Be the voice of the user. Represent design in leadership discussions and challenge product or technical decisions that hurt the experience.
• Lead the function. Manage external partners (agencies, UX writers, researchers), and hire, mentor and grow the internal team as we scale.

What You Bring

• 7+ years in product design, with extensive experience on mobile‑first consumer products.
• A world‑class portfolio showing exceptional UX/UI craft, strong product thinking and end‑to‑end work shipped at scale.
• Experience as the sole or lead designer with full ownership of design decisions.
• Hands‑on experience with user research, usability testing, hypothesis‑driven design, rapid prototyping and A/B testing.
• Experience leading or mentoring designers, or managing agencies and external partners.
• The ability to move fast without losing quality, turning ambiguous problems into simple, elegant solutions.
• Confidence presenting and defending your work with leadership and cross‑functional teams.
• Skill with animation, transitions and microinteractions, and practical use of AI tools in your design workflow.
• A strong ownership mindset and comfort in a fast‑paced, metrics‑driven startup.
• English at B2 or above.

Nice to Have

• Hands‑on use of product analytics tools such as Mixpanel, Amplitude or PostHog.
• Experience building or scaling a design system across multiple platforms.
• Advanced motion design skills.
• A strong network in the design community.
• A background in mobile apps, gaming, rewards, fintech, or marketplaces.

What We Offer

• A founding leadership role shaping a global product used by millions.
• Full ownership of product design, from vision to execution.
• The chance to build the design team from scratch.
• Direct collaboration with Product, Engineering, and company leadership.
• A fast‑paced environment where ideas ship quickly.
• Competitive compensation and flexibility.

Is this you?

This role isn’t for designers who prefer isolated features or pure visual execution. We want a design leader who owns ambiguous problems, makes independent calls, and is accountable for outcomes.

By submitting this application, I agree that my personal data will be collected, processed, and retained by the company solely for the purposes of managing and assessing my candidacy.