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Developer (C# .NET)

Reporting to: Development Team Lead
Location: Brighton/Remote
Hours: Full time

Be a part of the travel industry’s recovery and help the world’s top airlines keep their passengers informed and empowered every step of the way. We work with 50+ of the world’s best-known travel brands like British Airways, Ryanair, Qantas, and Etihad and they need us now more than ever. 

We are looking for a Developer to join our incredible team. Established in 2000, we have since grown to become one of the travel industry’s major suppliers of passenger messaging solutions. More than 50 airlines, rail and travel management companies use our communications platform - so while you may not have heard of 15below directly, you've more than likely received a boarding pass, eTicket or flight-change notification that was sent via our platform.

With your knowledge and expertise, you will be helping 15below to achieve its position as the world’s leading supplier of traveller communications.  

15below's vision

To become the undisputed global leader in traveller communications by providing the single competitive advantage in travel: customer engagement through brilliant communications.

We make journeys easier and more enjoyable by giving our customers and their passengers a stronger sense of control.  From disruption management to hyper-personalised pre-departure communications and mobile boarding passes, we build the technology to help companies stay connected with their customers at every stage of their journey. 

Established in 2000, we have since grown to become one of the travel industry’s major suppliers of passenger messaging solutions.  More than 50 airlines, rail and travel management companies, including British Airways, CWT, Qantas, Ryanair and JetBlue use our notifications platform.  With exciting ideas for the future, it’s time for us to expand our growing team and we’re hoping you are who we’re looking for.

15below's CEO Nicholas Key presenting at a customer conference

Our culture

  • People come first at 15below. We create strong working relationships built on openness, loyalty and trust, and we genuinely care about each other.
  • We are committed to continuous improvement and try to do things better every single time we do them. 
  • We add value to our customers’ businesses by taking a professional and informed approach to the way we work with them. 
  • You’ll share our values of Connected, Collaborative, Progressive, Knowledgeable and Enjoyable. 

With your knowledge and expertise, you will be helping 15below to achieve its position as the world’s leading supplier of traveller communications.  


People socialising in 15below's kitchen

The role

As a Developer, you are responsible for the successful development of software projects to our international client base, including: 

  • Customer-specific project development and Core 15below platform product development including:
    • Contribute to estimates and actively participate in the agile planning activities .
    • Configuration and deployment management for project releases.
    • Design and create templates.
    • Support the Product Owner and Project Manager in maintaining back logs.
    • Develop sustainable products in line with best practice, relevant standards and technological developments. 
    • Encourage and participate in pair-programming and test driven development. 
    • Escalate project issues appropriately and communicate project changes proactively to the Project Manager. 
    • Unit testing and code reviews.
    • Use problem solving skills to overcome technical issues. 
    • Assist QA with software application testing as needed.
  • Provide guidance and advice to the Support Team as required.
  • Being a Subject Matter Expert on our product and platform to provide support across the organisation. 
  • Participating in the development of the technical strategy in collaboration with key colleagues.
  • Participating in the evaluation of new technologies, languages, etc. for suitability and applicability, and assisting with their adoption if applicable.
  • Fostering collaboration and communication amongst team members.
  • Participating in cross-functional process improvement initiatives.
  • Stay abreast with technical development and trends.
  • Perform other related duties as required and assigned.
  • Contribute to core product development.
  • Adhere to 15below policies and company values.

Skills we want

  • A minimum of 3 years of software development experience.
  • Software development skills (C# .NET Framework, SQL, Web API, MVC).
  • Experience using Visual Studio and Git.
  • Excellent Object Oriented design skills (Design Patterns, SOLID).
  • Experience of continuous integration, continuous deployment and automated integration testing.
  • Ability to operate within defined methodologies, procedures, and guidelines.
  • BSc Computer Science or similar. 
  • Excellent communication skills. 
  • Good problem solving and analytical skills. 
  • Technical writing skills.

Skills to impress

  • Experience with XSLT and HTML.
  • .NET Core / .NET 5.
  • Kubernetes.
  • Experience with MS SQL Server 2019.
  • Experience of messaging systems (RabbitMQ).
  • Experience and proficiency with cross-browser, cross-platform development.
  • Experience with Change Management processes.
  • Experience in TDD (Test Driven Development).
  • Airline Industry, Reservation Systems, Travel Industry. 
  • International experience and Mobility.

What kind of person you are

We are looking for someone who:

  • Thrives on solving problems, loves grappling with complexity and can make the most difficult concepts easy to understand using sincere and clear communication skills.
  • Has a friendly ‘can do’ attitude.
  • Collaborates effectively with other disciplines and can be trusted to deliver.
  • Wants to invent cool, progressive stuff that’s useful to the industry.
  • Has calm presence of mind when it’s needed.
  • Has a strong sensible streak – but knows how to have a bit of fun now and again.

What's in it for you?

Work is a big part of life, so it has to be motivating and enjoyable. 

This job is about empowering you to do the work you do best and be part of a fantastic team.

We also offer a very competitive package with some great flexible benefits and other perks.

25+ days annual holiday
Private medical insurance (optional)
Life assurance
Flexible working
5% employer contribution pension scheme
Cycle to work scheme
Holiday purchase scheme
Perkbox retail discounts
Social events
Comprehensive wellbeing programme
Friday wind downs
Tech purchase scheme