Senior Product Designer

Location: Farringdon

Join a forward-thinking UK energy provider focused on sustainable solutions. We're looking for a Senior Product Designer to shape and enhance key customer experiences across digital journeys, designing clear, intuitive, high-quality interactions across web and mobile that help customers complete important tasks with ease and confidence.

This is a senior, hands-on role for someone with strong end-to-end product design expertise who thrives in complex environments and can move quickly from defining problems to delivering polished solutions. The role is an initial six-month contract (with potential extension), full-time (37 hours/week), with a hybrid model (one day every two weeks in the London office).

Key Responsibilities

Own the design of customer-facing journeys from discovery through to final UI

Translate complex service challenges into intuitive, accessible experiences

Collaborate cross-functionally with product, research, content, engineering, and business teams

Deliver interaction design, user flows, wireframes, and high-fidelity UI

Influence product direction through problem framing, ideation, and prioritization

Balance customer needs with business and operational feasibility

Use data, insights, and testing to continuously improve usability

Ensure consistency across end-to-end journeys

Contribute to and evolve design systems and patterns

Champion accessible, inclusive, and consistent design standards

Enable rapid iteration while maintaining high-quality design craft

Skills & Experience

Extensive senior-level product design experience across complex digital products

Strong portfolio covering both mobile apps and responsive web

Proven ability to simplify complex or regulated journeys

Expertise in UX, interaction design, and visual execution

Skilled in journey mapping, flows, and information architecture

Comfortable working in ambiguity and shaping solutions with cross-functional teams

Data-informed approach using user research and usability testing

Strong balance of pace, quality, and commercial priorities

Excellent communication skills with the ability to explain design decisions clearly

Self-starter who delivers impact quickly

Utilities, energy, or similarly complex service-led industries

Experience across account management, service tools, billing, payments, onboarding, loyalty, and self-service journeys

Working within regulated environments with accessibility standards

Experience contributing to or working within established design systems

Rullion celebrates and supports diversity and is committed to ensuring equal opportunities for both employees and applicants