Senior Software Engineer – Back-End

Location UK / Belfast

Job Type Permanent full-time

Salary Negotiable

Updated 16 hours ago

Reference 1436859

 Job Description

We are a global software company with development offices in Belfast.

In Belfast we build out new applications that run on a platform operating at volumes many times higher than stock exchanges. We compete against the world’s biggest tech companies to support Ad Funded businesses. Our customers include many household names in the media and gaming industry.


The role:

SpotX is looking for highly talented and motivated Senior Software Engineer with an interest in back-end development.  We are looking for someone who is versatile, methodical, excited by modern technology and enjoys focusing on tackling software challenges. Does that sound like you?

Making an immediate impact:

  • Develop new tools and technologies in the video ad serving space

  • Be part of a cross functional engineering team

  • Assess and continuously improve the development lifecycle

  • Influence the direction of our products and technology choices

  • Build and shape the team culture and working environment


What your day-to-day will look like:

Daily life at SpotX is all about the code we write.  You’ll start most days with a coffee or snack from the kitchen while you organize yourself for your day.  After standup, you’ll spend the majority of your day at the keyboard doing what you do best: slinging code that reads as well as it functions.  Meetings? Schmeetings… we value your time. Sometimes you will work with a partner (we love pair programming), and sometimes you’ll work with your best set of headphones.  Front end? Back end? Where do you like to work? In either case, you will also write the tests that back up your code.


Throughout the day, you may take a break to head to the whiteboard with one of your teammates to help them work through design or review code so that it can be merged to the baseline.  At some point, you may be invited to a meeting to discuss or plan work that is coming soon. We love new ideas, and we love solving problems together, even if it’s over a game of pool.


Preferred SpotX’er talents:

  • Awesome development and design skills

  • Experience in OO and/or Functional programming languages

  • The desire and ability to continue learning

  • 5+ years experience delivering successfully in an agile environment

  • Demonstrated ability to lead the development of features/components

  • Experience with: Git, SQL


Bonus SpotX’er talents:

  • GitHub account – we like developers who like developing!

  • Experience working at scale and with distributed systems

  • Web scale environments

  • Experience with: Docker, Scala, REST APIs and Linux/Unix

  • Experience mentoring junior developers


SpotX Perks:

  • Company paid social events and treats (e.g. boat trips, bowling, pub quiz, etc)

  • Subsidised Gym Membership

  • Active Social Committee

  • Stocked snack cupboard & beer fridge!

  • Free Friday breakfasts 

  • Weekly Scone and Fruit delivery

  • Great work-life balance and flexibility

  • Great holidays, (25 days plus 10 bank holidays PLUS exceptional extras over Christmas!)

  • Company pension plan and healthcare 

  • Learn in a fun, casual, team environment

  • Amazing office location with panoramic views

  • Free concert viewing from our office overseeing Custom House Square!

  • Games room – ping pong, pool, games consoles

​ ​SpotX Core Values: 

Customer Service, Integrity, Respect, Initiative, Collaboration, Innovation and Adaptability

SpotX is an equal opportunities employer

Learn more at and follow @SpotX on Twitter and LinkedIn.


​Apply now:

  • Submit your details: here