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Job Details


Belfast, Northern Ireland


Senior Software Engineer - Cash Management

  • At PEAK6, we are redefining what it means to be an investment firm. We are driven to see solutions others don't and capitalize on opportunities others miss. We operate with a focused, entrepreneurial drive and push ourselves to think differently. Unconfined by market or industry, this approach has helped us become the diverse range of successful businesses we are today, spanning proprietary trading, bespoke clearing solutions, growth capital and e-sports.  

    We are looking for an Intermediate Software Engineer to join us in our Belfast Centre of Excellence as part of the Apex Cash Management team. The Cash Management team at Apex FinTech Solutions has a prominent role in helping Apex meet its goal of democratising investment. Our API’s, workflows, and backend integrations reduce friction for customers moving money into and out of their brokerage account, in support of both equity and cryptocurrency trading activity. A modern microservice architecture built on Java, SQL, Mongo, Kafka, Rabbit, Kubernetes and Docker is in the process of migrating from an on-prem data center to the cloud (GCP), providing plenty of technical challenges.

    We use an agile approach with 2-week sprints, deliverables, and demos, but always reserve time for technical debt, quality assurance, and experimentation. We’re organized in small “feature teams”, each with its own feature captain and direct relationship with product management. Come help us change the way money moves in the 24x7 investing world of the future!

     The skills you'll need to succeed: 

    • Applicants must have the permanent right to work in the UK 
    • Significant experience working as a part of a multi-person development team, doing code reviews, testing, CI, trunk-based development, and/or other modern software practices 
    • Proficiency and in-depth understanding of Java, Python or C++ 
    • Experience in RDBMS design and writing SQL queries. 
    • Demonstrated skills in software design 
    • Interest in learning new technologies (languages, tools, frameworks) 
    • Adaptability: while you enjoy establishing process and standards, you understand the need to be flexible and enjoy trying new things 
    • A DevSecOps mindset and a driving desire to deliver value through software 


    • Experience with cloud-native applications and infrastructure-as-code  

     All of our employees have these traits. You should too.  

    • Collaboration  
    • Grit  
    • Adaptability  
    • Ownership  

    Life at PEAK6  

    We want you to like coming to work so we work really hard to make your job fun and different from any other.  

    We offer:  

    • 28 days annual leave plus 10 NI national holidays 
    • Pension matched up to 7%  
    • Private health insurance for medical and dental  
    • Life Insurance  
    • Great work/life balance and flexible working hours  
    • Quarterly 2-day hackathons 
    • Monthly catered lunches  
    • Unlimited drinks and snacks  
    • Poker tournaments  
    • Charitable matching gift program  
Apply Now

Applications processed via employer's online application form