Live consumer product · National infrastructure · Mobile UX

Scaling a national EV charging app in a live product environment

Scaling a national EV charging app in a live product environment

Client:

GRIDSERVE

Domain:

EV charging mobile application iOS & Android

Role:

Senior Product Designer

Focus:

Accessibility, charging setup clarity, in app communication, and app store presence

Status:

In market

Client:

GRIDSERVE

Domain:

EV charging mobile application iOS & Android

Role:

Senior Product Designer

Focus:

Accessibility, charging setup clarity, in app communication, and app store presence

Status:

In market

Client:

GRIDSERVE

Domain:

EV charging mobile application iOS & Android

Role:

Senior Product Designer

Focus:

Accessibility, charging setup clarity, in app communication, and app store presence

Status:

In market

GRIDSERVE operates a nationwide EV charging network across the UK, supported by a mobile app that guides drivers before, during, and after charging. I joined the product post-launch as a senior product designer, working on a live, evolving platform. My focus was improving clarity, accessibility, and communication at key moments in the charging journey, collaborating closely with product, engineering, and marketing teams.

GRIDSERVE operates a nationwide EV charging network across the UK, supported by a mobile app that guides drivers before, during, and after charging. I joined the product post-launch as a senior product designer, working on a live, evolving platform. My focus was improving clarity, accessibility, and communication at key moments in the charging journey, collaborating closely with product, engineering, and marketing teams.

GRIDSERVE operates a nationwide EV charging network across the UK, supported by a mobile app that guides drivers before, during, and after charging. I joined the product post-launch as a senior product designer, working on a live, evolving platform. My focus was improving clarity, accessibility, and communication at key moments in the charging journey, collaborating closely with product, engineering, and marketing teams.

Live App

Live App

Mobile UX

Mobile UX

Green Tech

Green Tech

Consumer product

Consumer product

Accessibility

Accessibility

Challenge

EV charging is often time-sensitive and stressful. Users rely on the app to quickly understand pricing, start sessions, and receive clear feedback while on the move.

The GRIDSERVE app operates as a live production system, balancing real-time data, brand expression, marketing priorities, and technical constraints. Design improvements needed to be incremental, defensible, and deliverable without disrupting an active user base.

Designing for clarity under pressure

Many EV charging interactions happen when users are rushed, unfamiliar with a location, or uncertain about cost and availability. My work on GRIDSERVE focused on reducing cognitive load in these moments through clearer hierarchy, concise copy, and predictable feedback.

This lens guided decisions across in-app flows, notifications, pricing communication, and store-front presentation.

My role &

scope

I joined the project as a senior designer on an established product, contributing across feature delivery, quality improvements, accessibility, and growth initiatives. I was trusted to lead specific initiatives, influence design quality, and support responsible iteration within an existing system.

  • Accessibility and inclusion reviews

  • Feature-level UX and UI design

  • In-app communication and messaging

  • App Store and Google Play assets

  • Visual and motion design support

Designing for high-pressure moments means reducing uncertainty before adding features.

Designing for high-pressure moments means reducing uncertainty before adding features.

Designing for high-pressure moments means reducing uncertainty before adding features.

Accessibility as

a foundation

Accessibility

as a foundation

Accessibility

as a foundation

I led an in-depth accessibility audit of the native app against WCAG standards, reviewing key flows, components, colour usage, typography, motion, and interaction patterns.

The audit established a defensible baseline for inclusive design and provided practical guidance for ongoing improvements.

Improving clarity

in high-pressure

moments

I refined communication patterns across the app to reduce uncertainty and support faster decision-making during active charging sessions.

This included work on push notifications, pricing clarity, usage limits, and seasonal promotions often under tight timelines and competing priorities.

Supporting

growth & discoverability

Supporting

growth &

discoverability

Supporting

growth &

discoverability

  • Live product with continuous updates

  • Strong marketing influence on visual decisions

  • Partial ownership of features

  • Backlog prioritisation and deprioritisation

  • Trade-offs between ideal design and delivery

Progress came from presenting clear options, advocating for accessibility and clarity, and supporting delivery within technical realities.

Working with

real constraints

  • A large, existing user base

  • Legacy decisions already in production

  • Real-world hardware dependencies

  • Operational teams relying on accurate, timely information

This approach prioritised reliability and trust over novelty, ensuring changes could be confidently released into a live consumer environment.

Outcome

  • Established a clear accessibility baseline for a live consumer app

  • Improved clarity and confidence in key charging and communication flows

  • Supported ongoing iteration of a widely used, real-world product

Impact came through incremental improvements, collaboration, and informed trade-offs rather than dramatic redesign.

Retrospective

  • Designing live products means improving parts of a system, not owning the whole

  • Accessibility and clarity create long-term product resilience

  • Clear communication builds trust more than visual novelty

  • Senior design impact often comes from influence without authority

GRIDSERVE is a live consumer mobile app available on iOS and Android, supporting EV drivers across the UK.

GRIDSERVE is a live consumer mobile app available on iOS and Android, supporting EV drivers across the UK.

GRIDSERVE is a live consumer mobile app available on iOS and Android, supporting EV drivers across the UK.

Want to know more?

If you're working on something complex, high -stakes or creative, I'd be interested to hear about it.

Copy email

Currently available: For selected projects starting Q1 2026

© Sam Jones 2026

Want to know more?

If you're working on something complex, high -stakes or creative, I'd be interested to hear about it.

Copy email

Currently available: For selected projects starting Q1 2026

© Sam Jones 2026

Want to know more?

If you're working on something complex, high -stakes or creative, I'd be interested to hear about it.

Copy email

Currently available: For selected projects starting Q1 2026

© Sam Jones 2026