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Job Details


Belfast, Northern Ireland


50,000 +


Senior Backend Software Engineer

  • We want to expand our talented teams and are excited to be creating a new centre of excellence in Belfast. We are building teams that are fully functional with leadership, back- and front-end development, data engineering and testing, located in Northern Ireland.  

    As a backend engineer at PEAK6 Technologies, you’ll have a big impact on the firm across several businesses. You’ll write code, help evolve and shape our architecture and frameworks, and have opportunities to take on new, hard problems. 

    Our environment is fast-paced and collaborative, and though our current project is written in Java and deployed to EKS, we routinely encounter and work in different languages, frameworks, and systems. We value engineers who are proficient in multiple languages because we know they can quickly learn the next one that comes up. We’ve recently written software in Java and Go. 

    What you will do all day: 

    • Define, develop, deploy and operate software that delivers real value to PEAK6 businesses. We often work with micro-services, managed by Kubernetes. 
    • Think through hard problems and solve them at all layers of the enterprise 
    • Develop and maintain clean and consistent APIs for applications that are used internally and externally 
    • Write self-documenting and well-tested code with an emphasis on sustainable development practices. Work as a part of small, productive development team that puts an emphasis on code quality, peer reviews and strong engineering practices 
    • Help grow the team. As one of the first PEAK6 team members in Belfast, you will help recruit the right talent and establish a culture that developers love to work in. Your coaching and mentoring will prove important in growing the Belfast Office. 

    We are PEAK6, a leading investment firm, headquartered in the historic Chicago Board of Trade Building, where we first opened our doors in 1997. It’s been over 20 years since we were one of the first firms to develop sophisticated proprietary technology to use in our trading business. Today, we continue to leverage our technical ingenuity and operational excellence across several investment areas, spanning early-to-mid growth capital, operational control, trading, and e-sports, while always providing value to the customer. Throughout the years, we’ve built and operated several financial technology firms, and we continue to evolve. You’ll find a bit of everything here, and we’re always looking to take on new endeavours.  

    What you need to succeed: 

    • The permanent right to live and work in the U.K. 
    • A degree in Computer Science, Computer Engineering or other demanding engineering degree (or equivalent work experience) 
    • A strong proficiency and in-depth understanding of at least one of the following core languages: Java or Go and at least one secondary language. 
    • Four more years of professional 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. 
    • Demonstrated skills in software design. 
    • The ability to learn new and unfamiliar technologies quickly, as required. 
    • Adaptability: while you enjoy establishing process and standards, you understand the need to be flexible and enjoy trying new things. 
    • An intuitive understanding of distributed architectures – experience with reactive architectures is a big plus. 
    • A DevSecOps mindset and a driving desire to deliver value through software. 

    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: 

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

    *Due to the unprecedented situation of COVID-19, PEAK6 has decided to protect our current and future employees by managing our business remotely. This is inclusive of interviewing, onboarding and each role day-to-day. Please consider that our roles will not be remote long-term and will return to an office setting once we're safe to do so following the guidance of local health authorities and the CDC. 

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Applications processed via employer's online application form