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Job description

Colt is the New Standard in high bandwidth network and voice services for enterprises and wholesale customers in Europe, Asia and North America's largest business hubs. With a global reach but a deep local presence, Colt is big enough to deliver and small enough to care.

Role summary:

This person is to help us move faster without taking our eye off quality whilst we continue to develop 2 award winning B2B customer-facing Network On Demand applications, working in an Agile/Kanban model. This person will have expertise in the technologies that underpin our platform.

The team is small and nimble, and as a result has made amazing progress in the industry. The primary focus is to ensure the platform is robust and reliable, and as zero touch as we can make it.

We work in a business with other infrastructure groups, so interaction with our peers is key. Sometimes we also have to test the water with new stuff, and so there will be a need to develop spikes/proof-of-concepts to evaluate tools and approaches to ensure the evolution of the platform makes best use of new technologies and techniques

  • Understanding and maintaining the infrastructure platform on which our applications sit.
  • Guiding/directing changes to the application code, as well as test and deployment toolchains so the team can spend more time developing capability and less time thinking about infrastructure.
  • Estimating size of development and infrastructure improvement tasks
  • Contributing to work prioritization
  • Suggesting and analysing different approaches for building solutions.
  • Continuously evaluating the infrastructure for opportunities to improve through refactoring.
  • Running spike/proof-of-concept exercises to test a concept, new technology or technique.
  • Mentoring other team members on good infrastructure design and systems administration.


Deep experience:
  • Linux administration
  • Oracle administration
  • JBoss administration and deployment
  • Node.js administration and deployment
  • Docker/Kubernetes administration and deployment
  • Bash coding
  • Networking and Firewalls
  • Jenkins for CI/CD
  • Nice to have: Python coding

Nice to have (with opportunity to learn on the role):
  • Python coding
  • JBoss JBPM Process Design and Development

In addition to offering competitive salaries and incentive plans, a range of benefits and local rewards packages are offered to staff. Colt recognises the importance of a work life balance.

Some benefit examples are:
  • Flexible working and relaxed dress code
  • Two days annually to spend on volunteering opportunities
  • Flexible benefits scheme
  • Access to a virtual business school for on-going learning
  • Business mentoring
Job Sector
Information Technology
Job Position
London, UK Show on map
Post date
Closing date

How would you fit?

Learn more about Colt

Be unique. Be authentic. However you prefer to say it, we really mean it. Our culture embraces people’s diverse perspectives and creates a positive environment where everyone belongs. We’re determined to build a better, more connected world for everyone.

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