Principal Product Designer

While technology is the heart of our business, a global and diverse culture is the heart of our success. We love our people and we take pride in catering them to a culture built on transparency, diversity, integrity, learning and growth.

If working in an environment that encourages you to innovate and excel, not just in professional but personal life, interests you- you would enjoy your career with Quantiphi!

Candyspace, a QUANTIPHI company, are experts in designing, building and optimising digital products. We create websites, mobile apps and commerce solutions for ambitious organisations investing in growth and digital transformation. We are trusted to deliver by some of the world’s best-known brands, including ITV, Rolls-Royce, Mazda, Mars and Colgate.

Working at Candyspace is about building products that people love. We all work hard to define the sweet spot between customer demand and the needs of the businesses who employ us. And by building products that they all love, we love those products too. To do this you will be part of a diverse and inclusive team of like-minded people, ambitious for themselves and passionate about what they do.

You will work on exciting and challenging projects.

We unite award-winning, human-centred design and engineering with Quantiphi’s global leadership in Generative, Conversational, and Agentic AI. Together, we form an AI-native digital experience powerhouse.

• Title: Principal Product Designer
• Reports To: Experience Director - Jonathan Kelly
• Experience level: 10+ years
• Employment: Full Time
• Location: Boston, Princeton, NJ

Candyspace is seeking an exceptional Principal Product Designer to join our growing UX & Design team. You will lead complex, high value product and service design work for global clients, shaping projects from early opportunity definition through to research, UX strategy, UI design, validation and delivery. You will be trusted to operate with senior stakeholders, define the right design approach, align teams around clear outcomes and translate complex business and user needs into simple, scalable digital experiences.

You are a systems thinker who sees beyond individual screens to the wider product, service and organisational ecosystem. You combine strong strategic judgement with excellent hands on craft, and are comfortable moving between discovery, facilitation, research, IA, prototyping, design systems, accessibility and delivery.

You will play a key role in raising the quality of Candyspace’s design practice, mentoring designers, improving ways of working and helping the team deliver consistently excellent work. You will also play a leading role in helping Candyspace adopt AI within the design practice, exploring how AI tools and workflows can improve research, ideation, prototyping, delivery and team productivity. You will help identify practical use cases, share knowledge across the team, and contribute to building a progressive, responsible and human centred approach to AI enabled design.

Ideally you will have 10+ years’ experience working across complex digital products and services, either in agency, consultancy or in house product environments.

• User research
  • Research advocacy – Champions research and testing as essential to design practice, mentors others and helps improve the way Candyspace approaches research.
  • Research & validation – Defines and leads appropriate research and testing approaches across complex projects, selecting the right methods across qualitative, quantitative, behavioural and attitudinal research.
  • Conducting research – Leads interviews and research sessions with confidence, empathy and emotional intelligence, including with challenging or senior participants.
  • Synthesis – Synthesises complex findings into clear strategic insight, reviews the research work of others and helps build confidence across the team.
• Problem definition and ideation
  • Mapping – Uses journey maps, service blueprints and experience maps to align stakeholders, reveal opportunities and influence product or service change.
  • Ideas generation – Leads high quality ideation sessions with clients and teams, selecting the right…