Senior Front End Engineer


  • Full Time

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About Onto

Onto is the all-inclusive electric car subscription changing the rules of the game for car ownership.

By 2030 the UK government has declared that all new cars must be electric. At Onto we believe that change can’t come soon enough and we want to give everyone the experience of driving an electric car whilst also doing the right thing for our planet.

Over the last 10 years, other industries such as media and food delivery have already shown that customers love the benefits of a subscription service. One industry that hasn’t moved forward so quickly is how people purchase cars. 2 out of 3 UK drivers want their next car to be electric, but it’s daunting. Last year out of the 2.3m cars sold in the UK, 90% of new cars in the UK were sold through finance, with a multi-year commitment, yet 70% of consumers decided against paying the final balloon payment to own the car at the end of the contract.

Drivers want more flexibility and the convenience of paying monthly but without long-term personal finance contracts or the hassle of arranging insurance, servicing, tax or repairs.

At Onto, for a flat monthly fee, customers get the latest electric cars with insurance, servicing, breakdown cover and free public charging at over 12,000 locations in the UK. There is no deposit and only a 1-month commitment. Hassle-free, emissions-free, and affordable driving.

How does it work? Simple. It’s a fully digital service. Sign up and we’ll deliver your car to your door within 72 hours. You just need to unlock your car with the Onto app and enjoy your drive!

Onto was formed in 2017 by co-founders Rob Jolly (CEO) and Dannan O’Meachair (VP People). Originally formed after Rob saw the challenge of converting people over to electric vehicles while working in the Corporate Strategy area of Jaguar Land Rover. After a few pivots in strategy and company name changes, Onto was born. In 2021 we brought onboard a new CTO, Ben Brown, the OntoTech team is looking to radically enhance our customer experience and set up our technology platform for explosive growth.

From a current OntoTech team of 12, we plan to grow to over 25 people in 2021, and expect this growth to continue into 2022 and beyond. Come and join us – you’re in for an exciting ride!

Join us on our mission of revolutionising the £2 trillion automotive industry!

About OntoTech

We’re a tight-knit and diverse bunch who care deeply about creating an amazing team for each and every person to work in. We understand the best way to create a product that our customers love is to create a team in which people love working. We are passionate about technology but also know that the purpose of our technology is to create a delightful product experience for our customers.For anyone who has never worked for a company with a physical aspect to their product, this creates its own set of challenges for our teams. Our core digital product relies on customers using our mobile app to access their car. Any issues or errors mean that someone can’t use the car correctly and creates a poor customer experience.

Our operations teams also use our own technology to manage our fleet and deliveries to and from customers. Missing a delivery ultimately means the car does not turn up at a person’s house. This cannot be fixed by just updating the data in our database, meaning the quality of what we build is paramount to creating a delightful customer experience.

As you would expect from a tech-driven company we’re working across a number of exciting technologies. We’re cloud-based at heart, focussed around AWS. Our back-end technology of choice is Python 3.7 using the Django framework with our front end written in React 16.8 with Redux. We also use GraphQL for our APIs. Our apps are native, written in Swift 5.2 using SwiftUI and Kotlin 1.4 respectively.

A day in the life of one of our engineers is extremely varied. Many of the problems we are solving daily have not been solved before. With over 2300 vehicles in the fleet [March 2021], which we expect to double every three months in 2021, it’s the role of OntoTech to ensure that every customer gets the full benefits of our product each and every time they use their car.

By joining us now you’ll be joining at an early stage in our growth. Your role will truly be impactful to our customers each and every day. You’ll also get to work with us as we scale our platform and solve the technical challenges this will entail.


Who you are


  • You’re an existing Software Engineer currently working on building highly scalable commercial software and web applications
  • You have experience in designing, testing, refactoring, and amending complex applications
  • Someone who develops performant, efficient, and reliable applications
  • Experienced in reviewing code and pull requests from other teams members
  • Experienced in designing and maintaining software documentation to ensure that processes and procedures can be easily accessed and understood by other members of the team
  • Someone who has experience in estimation and planning work using adaptive agile methodologies
  • Passionate about technology and keep abreast with technology innovations across different ecosystems

What you will do

As a member of our Internal Tools team, you will enhance the tooling used by our Internal Operations and Customer Success teams to run our business. Our custom software ensures that all of our vehicles are managed through their lifecycle and also acts as our CRM system for customers. You will work closely with team members across engineering, product management, and design.

As we plan to expand the team over the next few years this role offers a real opportunity for personal growth and for you by becoming a more senior engineer or even moving into more of a leadership role. There will also be an opportunity to explore your passions with internal movement between our squads.

You will:

  • Develop fast, reliable, efficient, and highly scalable applications
  • Architect, test, and release new features in collaboration with Product Owners, UI/UX designers, and other engineers
  • Document your software by developing documentation, flowcharts, diagrams, charts, clean code, and code comments
  • Identify and resolve scalability and performance issues
  • Perform code reviews with other engineers
  • Advocate for best engineering practices where needed and be familiar with security and engineering best practices
  • Mentor younger engineers within your squad

What you need

At the heart of Onto tech stack is Python/Django, ReactJS, Swift, Java, Kotlin and Terraform. This role needs a predominantly Front End skillset, but we would love engineers who either have experience or would love to work full-stack.

For this role, you will need to have:

  • Substantial experience working with commercial ReactJS applications
  • Proficiency in other web technologies like HTML, CSS, SCSS, and Javascript
  • Good understanding of Typescript
  • Some experience working with at least one cloud-computing platform (we use AWS)
  • Experience consuming REST APIs
  • A passion for quality and creating well-tested, maintainable code

It would be a bonus for you to have

  • Experience working on complex commercial applications with large engineering teams that require disciplined code structure, micro-frontends, component libraries, etc
  • Experience working with GraphQL
  • Experience with Python or another back-end language to create APIs
  • Experience using Terraform to manage infrastructure as code
  • Experience using containerization technologies like docker


As well as a competitive salary we provide a number of other benefits including:

  • Onto car discount (via Salary Sacrifice) – become a customer and join the EV revolution
  • £200 Annual Learning budget
  • Summer and Christmas Party
  • Quarterly off-sites and team building
  • Small milestone gifts (Birthdays, Life Milestones, Work Milestones)
  • Reward and Recognition monthly and every quarter for employees
  • Discounts on retail, travel and cinema tickets through perks at work
  • Shuttle bus & car available for staff from Kings Cross & the office

Salary: Competitive based on experience

Job Overview