Full Stack Developer, Honest
£70-80k
Plus EMI option scheme
More information about location
1+ day a week in office
Carbon negative mobile network
Be an early applicant
Carbon negative mobile network
21-100 employees
Be an early applicant
£70-80k
Plus EMI option scheme
More information about location
1+ day a week in office
21-100 employees
Company mission
Honest is the network doing mobile right. It's on a mission to show a broken industry there’s a better way to do mobile.
Role
Who you are
- You're a strong generalist with experience across both frontend and backend
- You’re fluent in modern TypeScript but you’re language-agnostic and enjoy quickly learning new languages and technologies
- You’re comfortable with infrastructure, DevOps, networking and cloud deployment (bonus: GCP experience)
- You’re skilled with relational databases (Postgres) and writing efficient SQL, and ideally have worked with NoSQL and other database types too
- You’re pragmatic, curious, and motivated by solving real user problems
- You’re comfortable owning projects end-to-end in fast-moving environments
- You’re committed to clean, maintainable and well-documented code
- You’re a clear communicator, who collaborates well and isn’t afraid to challenge assumptions and are happy asking questions or challenging assumptions
- You’re excited by AI and its potential to accelerate development and assist with fast iteration and experimentation
What the job involves
- We’re looking for a talented and curious Full Stack Developer to help take our product to the next level
- Our engineering and product teams are already disrupting the industry with our unique, 4 network, data-only product, Smart SIM
- But we know there’s much more to build. That’s where you come in
- In this role, you’ll help shape the technical direction of our product, looking beyond the standard stack to introduce new technologies, techniques, and ideas
- You’ll play a key role in the full development lifecycle, delivering high-quality features and continuously improving how our backend and frontend platforms are built
- You’ll work across our API, databases, network and infrastructure, internal tools (including team and customer-facing dashboards) and web-based interfaces, creating experiences that truly delight our users
- Reporting to the Head of Engineering, you’ll be a core part of our small but mighty tech team, collaborating closely with developers and product to make a meaningful impact across the full stack
- Our engineering team is at an exciting stage of growth as we explore how AI can accelerate development, level up our coding, enable fast adoption of new languages and frameworks, to help us achieve our ambitious goals
- Design, build, and maintain scalable backend services and APIs using TypeScript and Python
- Develop performant, intuitive frontend features for internal and customer-facing tools
- Work with Postgres to design efficient schemas and write clean, optimised SQL
- Contribute to infrastructure and DevOps – from CI/CD pipelines to monitoring and alerting
- Help setup and maintain networking and firewall rules with tools like iptables, tc, Suricata, RADIUS
- Deploy and manage services on Google Cloud Platform, using its managed tools and infrastructure
- Collaborate in code reviews and architecture discussions to maintain high engineering standards
- Troubleshoot and resolve production issues across the full stack
- Work cross-functionally with product, customer operations, and marketing to deliver seamless user experiences
- Help shape engineering best practices and build internal tools to support our team
Application process
- We’re currently on a winter break, and enjoying one too many mince pies. If you're applying now, we'll be in touch in January. We can't wait to read your application
- Introductory call with our Head of People & Impact (30 mins)
- Interview with our Head of Engineering and Backend Engineer (1 hour)
- In-person interview:
- 1-2 hour interactive live coding session
- 30 min break
- 1 hour interview with Andy and Josh, our Co-Founders
- We understand it is a big commitment to come in, so we are happy to pay you for this time
Salary benchmarks
Our take
Honest Mobile was launched in response to seeing a gap in the modern market for mobiles. Mobile networks were lagging behind, set in their old ways with complicated contracts, overcharging, and keeping customers on hold -being the norm.
To challenge this, the company built Honest Mobile from the ground up to create a better mobile network for customers and the planet. With £150k in funding, Honest Mobile has created the first carbon-neutral mobile network where customers can float between networks. And on top of this, its a registered B-Corporation and plants trees on behalf of its customers.
The mobile industry has many established players who have already spent time dealing with the challenges that Honest Mobile currently faces, like price competitiveness, WiFi functionality, and rural coverage. However, by aiming to capitalise on the consumer trend of eco-consciousness, which many of the existing companies in this space neglect, Honest Mobile aims to grow its customer base. Its performance on Seedrs, an equity crowdfunding platform for startups where it raised more than £3M in an oversubscribed campaign, shows that it is clearly gaining traction in the market.
With sustainability at the core of its mission, the company has released the UK's first recycled SIMs – made from 100% post-consumer recycled plastic. Honest Mobile's next step? Getting get rid of SIMs altogether!
Steph
Company Specialist at Welcome to the Jungle
Insights
31% female employees
Company
Funding (last 2 of 4 rounds)
Oct 2025
$0.3m
ANGEL
Apr 2023
$4.1m
EARLY VC
Total funding: $5.6m
Company benefits
- 🏝️ 25 days annual leave: Relax, unwind and take that all-important break 25 days a year, plus all the bank holidays
- 🥳 Your birthday off every year
- 📈 Ownership of Honest: Own your slice of Honest, through our company-wide EMI share options scheme
- 📱 An Honest plan and new refurbed phone: It goes without saying... a *new* phone (refurbed, ofc) and monthly SIM plan is coming your way – on us
- 🙋 Paid volunteering: We're all about doing the right thing. Each year you'll get a day to give back
- 📚 £500 annual learning budget: You get a learning budget! You get a learning budget! Everyone gets a learning budget! That's right, you'll get £500 per year for all your essential and technical learning
- 🧘 Monthly £35 wellbeing budget: Did someone say wellbeing? Yes, we did! You'll receive £35 through Heka to spend on self-care for the month
- 🚲 Cycle to Work scheme: Looking for a new ride to work? We've got you covered with the Cycle to Work scheme
- 🪇 Regular team events: Every other month we get together for a fun activity – from pottery painting, to archery, to escape rooms
Company values
- Radical changemakers: We’re here to shake things up, not follow the crowd. That means moving fast, taking risks and tackling challenges head on
- Positively provocative: We’re hungry for change but we’ll always keep things warm, hopeful and positive
- Caring candidly: While other networks count profits and dole out the bare minimum, we're here flipping the script. Because at Honest, we care about the same things our customers do
- Down-to-earth honesty: The clue’s in our name: we like giving it to people straight. Honesty is the bedrock of who we are
Company HQ
Lambeth, London, UK
Articles
Leadership
Andy Aitken
(Co-Founder & CEO)Andy studied Land Economy at Cambridge, and are an ICAEW Chartered Accountant. Worked at Deloitte for over eleven years, from Deloitte Scholar to Consultant for Deloitte Propel.
Josh Mihill
(Co-founder)Josh studied Product Design Engineering at Glasgow School of Art and the University of Glasgow followed by an MPhil in Industrial Systems, Manufacturing & Management from the University of Cambridge.
Diversity, Equity & Inclusion at Honest
Fiona Egan (Head of People & Impact)
- Here at Honest, we’re all about doing the right thing, 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. Need any adjustments to support you with your application or at any point during the interviewing process? Email Fi, our Head of People & Impact. She’s here to help.
- 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.
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