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Posted 16 July, 2026
Honest Mobile

Senior Designer

London, UK Full Time
Salary: £50,000 to £60,000 Annually

Hello, we’re Honest 👋

We’re on a mission to set a bold new standard for mobile (and drag a broken industry into the future while we're at it).

It started with Classic SIM, our essential everyday SIM that includes bills that drop, support in seconds, and a shrinking carbon footprint.

Thousands of happy customers joined us. But we knew people still faced two big problems: rubbish signal and expensive roaming.

So we built Smart SIM, the backup eSIM that gives unbeatable signal and free global roaming. Whenever you lose signal or go abroad, you can switch to Smart SIM in just a few taps for 500+ essential apps on EE, O2, Three and Vodafone, plus hundreds of networks worldwide.

We now have more than 100,000 happy customers and you might have even spotted us getting offers on Dragons’ Den.

We’re also proud to be the UK’s first B Corp mobile network, a carbon-negative company and member of 1% for the Planet 🌎

But building the world’s best mobile network requires having the right people to help us do it. That’s where you could come in.

Like the sound of Honest? Read on.

This could be the start of something exciting 🚀


👀 Role overview

We want to build a brand people are proud to be part of, complete with a user experience that’s as good as our product. This role is crucial to making that happen.

Everything visual that goes out under the Honest name will have your fingerprints on it, from our app and website to emails, paid ads and social. You’ll shape how we look and feel at every touchpoint.

You'll set the standard across the business, showing the world what a network doing things differently actually looks and feels like.

This role is more than executing on a brief. You’ll bring creativity, big ideas and obsessive attention to detail to everything you touch.


🚀 What you’ll do

  • Own visual output including app, website, emails, paid ads and social
  • Develop, own and scale our AI design system so it grows with the business and accelerates output
  • Constantly raise the bar of what excellent design looks like across every touchpoint, establishing processes for consistent, high-quality work
  • Work with marketing to deliver high-performing creative campaigns, paid social ads and landing pages (including building and shipping with AI)
  • Work with tech and marketing to level up our app and website, turning product features and data into slick user experiences that double up as hero creative in ads and landing pages
  • Use AI as a core part of how you work, from ideation to execution, and bring that pace to everything you produce


🙋About you

  • 5+ years of design experience across digital and brand, with depth across UI, UX, and graphic design
  • A big ideas, creative thinker with the portfolio to prove it
  • Fluent in AI-powered design tools and building AI workflows
  • Proficient in Figma, Adobe Creative Suite across Photoshop, Illustrator and InDesign
  • High attention to detail, able to balance speed with quality output
  • Comfortable working autonomously, juggling competing priorities and collaborating cross-functionally across a fast-moving business
  • Bonus points for motion and animation (Lottie, After Effects) experience


🤝 Interview process

  • Intro call with Fi, Head of People & Impact
  • Interview with Sophia, Head of Brand & Marketing
  • Technical task
  • Technical interview with Josh, Co-Founder and Sophia
  • Final values interview with Andy, Co-Founder


🛟 Support during the process

If you have a disability, health condition, or any access needs and would like us to make adjustments to our process, please let us know. We’re happy to work with you to make sure you have what you need to take part fully and comfortably. Email Fi, our Head of People & Impact. She’s here to help.


🇬🇧 UK work eligibility

We can only accept applications from those eligible to live and work in the UK. We are unable to sponsor visas for this position.


What you’ll get in return for all your hard work?

💸 Salary: £50,000 - £60,000

⚖️ Ownership in Honest through our EMI option scheme

🌴 25 days of annual leave, plus all bank holidays (Plus an extra day for each year you stay with Honest)

🥳 Your birthday off each year on us!

🏡 A hybrid-first working environment with at least 1 day per week in the London office

📱 An Honest sim, and refurb phone on us

🙋 1 paid volunteering day each year

💚 Wellbeing budget through Heka

🚲 Cycle to Work scheme

📚 £500 annual learning budget

🪇 Regular in-person team socials

🏥 Private medical insurance

♥️ Group life insurance

🍼 Enhanced and inclusive parental leave


Why join Honest?

🏅Backed by top investors including Sidebyside, DMGV, WAYRA, Ascension and TinyVC

🙋 Being part of a talented team that likes to have fun

📚 Fast-learning, entrepreneurial environment where we focus on supporting your growth and personal development

📈 Opportunity to help shape the future of Honest

💻 We'll provide you with all the tools and technology you need to do your best work

⭐ Working for one of the UK’s top rated mobile networks on Trustpilot

🌳 Make your mark at the UK’s most ethically rated and highest scoring B Corp mobile network


Diversity, inclusion, equity and belonging at Honest

Here at Honest, we’re all about doing the right thing, even especially when no one’s looking.

That includes building an inclusive environment where everyone feels like they belong and proud to be their true selves everyday. We’re committed to providing the support our team needs to thrive and do their best work.

We believe it’s our differences that make us stronger and celebrate diversity in the Honest team. Learning from one another’s unique experiences, perspectives and ideas is how we win.

That’s why we strongly encourage applications from all walks of life. So no matter your ethnicity, sexuality, gender identity, disability, neurodiversity, caregiver status, economic background or anything else, we welcome your application.