Principal Software Engineer

Signifyd·Belfast ·Salary available on request


The Principal Software Engineer (PSE) role is responsible for fulfilling the technical team lead role for a signifyd feature team (typically 4 engineers). Each PSE plays a critical strategic role in ensuring that the work delivered by their team delivers on stakeholder requirements as well as embodying the technical excellence which is at the core of the signifyd engineering culture.

In order to achieve this a PSE role has more emphasis on cross functional stakeholder engagement, architectural design, and coaching within their team. However like all engineering role within signifyd the PSE is still very much a hands-on role where the majority of time is spent coding within the team. This role is ideal for an experienced engineer who is ready to step up to the problems presented by designing internet scale solutions, but who also enjoys writing code. 

Our main tech stack includes: Java, Cassandra, ElasticSearch, Redshift, Dynamo, MySQL, Apache Spark, Play! framework, gRPC, Linux, Docker, Kubernetes, AWS

Job Duties:

  • Perform the technical team lead role during your teams sprint and assume responsibility for proactively engaging with cross functional stakeholders alongside:
  • Working with product owners to ensure work is made ready for the team and any areas of ambiguity are resolved 
  • Ensuring appropriate levels of communication are facilitated with the team
  • Ensuring adherence to the software development processes
  • Ensuring timeliness and quality of the sprint deliverables
  • Deliver designs for any architecturally significant enhancements or additions to the sets of services assigned to your team 
  • Under take the design and development of significantly complex software development tasks
  • The ability to establish and maintain a healthy dynamic within the scrum team and to mentor more junior team members
  • Mentor and coach more junior members of the scrum team
  • Enforce Signifyd quality standards on code reviews, provide feedback that raises the quality of the resulting code, and mentor peers through the review.
  • Contribute to the Signifyd engineering culture and ensure that any inefficiencies and wasteful processes are highlighted and addressed
  • Complete assigned tasks in a timely manner, or notify team if you are blocked and will not be able to complete expected tasks without help.


  • Minimum 6 years of experience developing high traffic 24/7 SaaS products
  • Excellent programming skills in Java or similar OOP language
  • Experience with scripting languages and SQL
  • Highly developed problem-solving skills

Bonus Skills:

  • Experience building large-scale high-performance systems
  • Experience with scripting languages and SQL
  • Startup experience
  • Machine learning or related knowledge

You’ll receive a benefits package that is one of the most competitive in Belfast;

  • A competitive base salary
  • An equally competitive equity package
  • Bi-annual performance related bonus (10% performance related)
  • Pension matched up to 8%
  • ‘Day one’ access to private Healthcare, Dental and Optical insurance scheme for you and your whole family
  • 25 days of annual leave (plus 10 stat)
  • 2 days WFH per week and our core hours are 10 - 4
  • 12 weeks full-pay parental leave for mums and dads!
  • Free lunch every day that you’re in the office plus free snacks and drinks
  • Subsidised public transport and car parking
  • A LinkedIn Learning account
  • Top of the range equipment and lots of Signifyd swag
  • Monthly Signifyd social events organised buy our social committee

How to Apply

Please apply by clicking the link and either submitting your CV or your LinkedIN profile!

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