We are currently looking for a highly capable Senior Javascript Engineer who will be responsible for designing, planning and implementing full stack web applications.

Working as part of small cross functional teams, this role will report to the Software Engineering Manager, but be very autonomous, and will be relied upon to support the SEM and the wider business in building enterprise grade bespoke software solutions for our global clients.

Why work with us?

We go into some more detail below, but to help you decide to keep reading here are some of the great reasons to work with us at LEO:

Great technology

- We strive to use the right tool for the job, and since the job is often new and varied there are plenty of opportunities to work with all sorts of technology.

Working flexibility

- We have a number of offices and have lots of flexibility around working in any of these or remotely, with all sorts of options around working hours and holidays.

Team and work culture

- People always come first. We all work hard to ensure that we always exceed our client’s expectations, but we are also careful to ensure that work is well balanced.

Stability and autonomy

- LEO is an award winning digital agency that specialises in learning technology. We are well known in the industry for creating first class, innovative and engaging solutions for our clients and their learners. Our teams are given the autonomy to ensure that we can continue this innovation in everything we do.

What we’re looking for

We’re looking for someone who is passionate about delivering high quality code, with a focus on security and performance, whilst maintaining a great eye for detail in the implementation of web UI, is self motivated and can work autonomously, but most importantly understands how to work collaboratively as part of a small agile team.

LEO has a few offices in the UK (Brighton, London, Sheffield) and we’d be happy for you to work from any of these, as well as being open to working remotely with the possibility of coming into offices from time to time. As a Senior we’ll be looking for someone who is keen to share their knowledge and experience with other team members, through paired programming, code review and other team meetings, both remotely and sometimes in person.

What will you be doing?

You will be taking responsibility for the technical design and implementation of bespoke software solutions that LEO builds to help our customers provide their employees and customers with some of the best and most engaging learning and training experiences in the world. Some of our current projects range from standalone React and Express based learning games, React web portals that connect learners to functionality across multiple systems, and integration microservices in both Express and Django that connect together numerous client systems and services helping business and their learners better understand their capabilities and learning opportunities. In each case technology and frameworks are selected to best suit the requirements, giving the Senior Javascript engineers an opportunity to leverage the best and most current solutions available.

As a senior you’ll also be responsible for keeping your solutions well documented, along with supporting and mentoring other members of the team in understanding the technologies and approaches used.

What do you need?

JavaScript/Typescript: This is the foundation of much of our application development, so extensive industry experience here is key. We use this in a

number of forms but mainly:

- React for the frontend

- Express for the backend

- HTML/SASS: Seems obvious, but we are serious about high quality HTML to ensure that we can deliver enterprise level experiences that are accessible to all

- Deployment and Configuration experience. We use Terraform and AWS along with Bitbucket pipelines for the majority of our solutions, and we’ll need you to have at least some experience of how to leverage these as part of CI/CD approach

Additional skills that we look for Whilst not critical, these tools are a big part of the work we do, and we’ll be looking favourably on any experience you have with these.

● GraphQL


● Python

● MySQL/Postgres

● Git

● Docker


Come and work for a dynamic, growing, market-leading global organisation with more than 80 international awards for our work. LEO is a global leader in the creation of blended and digital learning solutions, working with the world’s top brands, including British Airways, Jaguar Land Rover, Novartis, John Lewis, as well as UK Government departments and charities.

With offices in Brighton, London, Sheffield, New York and Atlanta, we support our clients throughout the entire training and development lifecycle. We design blended learning, multi-device learning, mobile apps, learning portals and learning simulations and games as well as more traditional e-learning.

Our people are our first priority, we have active virtual and in-person social events, coaching and mentoring, and a dedicated internal Learning & Development team. Everyone makes a difference to what we do and we encourage everyone to use their voices. We run listening groups/pulse surveys, have Employee Resource (Affinity) Groups which ensures the continuous development of making our overall workplace and working environments (whether in the office or at home) more inclusive and enjoyable for all!

We are an Equal Opportunity Employer and do not discriminate against any employee or applicant for employment because of race, color, sex, age, national origin, religion, sexual orientation, gender identity, status as a veteran, and basis of disability or any other federal, state or local protected class.