About Once For All

Once For All is a leading SaaS ecosystem that connects and streamlines compliance, procurement, ESG, and supply chain management in the construction industry. We also provide a marketplace and network, as well as tools for tender management and beyond.

Operating across the UK and Europe, our mission is to empower businesses with innovative digital solutions that enhance efficiency, ensure regulatory compliance, and drive sustainable growth.

As we continue to scale, we are seeking a Senior Product Designer to shape the future of our platforms. This is a key role at the intersection of design and research, where you will help create experiences that make complex workflows simple, human, and scalable.

Role Overview

We are looking for a Senior Product Designer to join our growing design team. This is a hands-on role where you’ll work across discovery, user flows, wireframing, prototyping, and delivery to improve the Once For All ecosystem. You’ll collaborate closely with researchers, product managers, and engineers to design intuitive, scalable solutions for complex workflows across all Once For All products.

This role is ideal for someone who thrives in complex SaaS environments, enjoys turning research insights into clear design solutions, and is eager to leverage AI tools to make design more efficient and consistent.

Key Responsibilities

As a Senior Product Designer at Once For All, you will:

• Take ownership of end-to-end product design for core areas of our SaaS ecosystem, from discovery and user flows through to high-fidelity delivery.
• Partner with UX researchers, product managers, and engineers to translate insights into impactful design solutions.
• Apply systems-thinking to design scalable workflows, dashboards, and multi-role user journeys across compliance, ESG, procurement, and marketplace features.
• Create wireframes, clickable prototypes, user flows, and high-fidelity designs that bring clarity to complex problems.
• Contribute to and evolve our design system, ensuring consistency and scalability across products.
• Enhance user engagement with micro-interactions and animation where appropriate.
• Use AI-powered tools aid speed, efficiency and consistency.
• Share knowledge and support the wider design team through collaboration and constructive feedback.
• Champion collaboration over handoff, ensuring design and research inform each other throughout the process.

What We’re Looking For

• 7+ years of product design experience, with a strong focus on B2B SaaS platforms.
• Portfolio that demonstrates complex workflows, dashboards, data-heavy systems, or multi-role experiences (not only visual/UI).
• Proven ability to design and iterate wireframes, user flows, prototypes, and interaction patterns.
• Strong proficiency in Figma (including variables, tokens, prototyping, and animation).
• Experience working with design systems, accessibility standards, and responsive design.
• Collaboration experience with UX research, including usability testing and data-informed design.
• Comfortable working in an agile, cross-functional, regional environment.
• Curiosity and openness to AI tools as part of your workflow.
• Excellent communication skills in English (French or Spanish a bonus).

Nice to Have

• Experience designing for compliance, procurement, ESG, or marketplace systems.
• Familiarity with motion design and micro-interactions to improve usability.
• Understanding of front-end development concepts (HTML, CSS, React) to collaborate effectively with engineers.
• Experience mentoring or coaching junior designers.

Why Join Us?

• Contribute to the design of a pan-European SaaS ecosystem that drives real-world impact in the construction industry.
• Be part of a collaborative environment where design and research work closely together.
• Opportunities to experiment with AI and automation to push the future of design.
• A flexible, remote-friendly working model with occasional in-person collaboration.
• Competitive salary, benefits, and the chance to make a significant impact on the user experience of thousands of professionals.

What we offer:

As well as a career in a fast paced environment within a expanding business, we also offer the below benefits as standard:

• Wellness fund or *Private Medical Insurance (dependent upon role)
• Pension
• Life Assurance x 3
• 25 days holiday plus 8 Bank Holidays
• Ongoing continual professional development (CPD)
• Holiday purchase Scheme up to 5 days
• 1 paid and 1 unpaid volunteering day
• 24/7 and 365 Days Employee Assistance Programme
• Team and company offsite events
• Headspace – mindfulness and meditation app
• Specsavers eye care voucher
• Free Tea, Coffee and fruit every week – Basingstoke office