Senior/Lead Backend Developer - Investor Communications



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.

We are creating a new software team in Belfast to work in Apex Clearing engineering department. The Senior/Lead Software Engineering will make technical decisions, understand the problems, and implement solutions to solve the firm’s challenges.

This team will modernise the financial reporting, data transformation, investor communications by using new tools and leveraging efficiencies through cloud infrastructure. The Investor Communications team are free to explore unique solutions and try fresh ideas that may benefit our financial services and trading businesses, and our investment companies. You’ll collaborate with some of tech’s sharpest minds to solve for the firm’s ever-changing but exciting challenges. Working in tech at PEAK6 means that you’ll always be presented with a variety of new possibilities as you continue to enhance your skills.

Come help us change the way money moves in the 24x7 investing world of the future!

You’ll be responsible for:

  • Defining, developing, deploying and operating software that delivers real value to PEAK6 businesses. We often work with micro-services, managed by Kubernetes.
  • Thinking through hard problems and solving them at all layers of the enterprise
  • Developing and maintaining clean and consistent APIs for applications that are used internally and externally
  • Writing self-documenting and well-tested code with an emphasis on sustainable development practices
  • Working as a part of small, productive development team that puts an emphasis on code quality, peer reviews and strong engineering practices
  • Helping 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
  • Managing project priorities, deadlines and deliverables with your technical expertise

You’ll gain loads of experience in this role but before you do, you should have:

  • 5+ or more years of professional experience working as a part of a multi-person development team that utilizes automated testing, CI pipelines, peer reviews ideally in an Agile Environment
  • A strong proficiency and in-depth understanding of at least one of the following core languages: Java, Go, C++ or C#. The project we’ll first take on is up to you using backend engineering and cloud experience (GCP)
  • Demonstrated skills in software design
  • Excellent problem-solving skills with high attention to detail
  • Effective communication skills
  • Adaptability: while you enjoy establishing process and standards, you understand the need to be flexible and enjoy trying new things
  • Applicants must have the permanent right to live and work in the UK - this job is based from our Belfast Office

As part of our interview process, you will meet with members of both our Belfast and US offices. Everyone you meet, shares the same values: Open and Honest Communication, Teamwork and Collaboration, Involving Everyone, Leaders Who Serve and Personal Accountability.

Life at PEAK6 / Apex Clearing

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:

  • Market Leading Salary + Annual Bonus
  • 28 days annual leave plus 10 NI national holidays
  • Training & Development Budget
  • Pension matched up to 7%
  • Private health insurance for medical, dental & optical
  • Life Insurance
  • Great work/life balance, flexible working hours
  • Parental leave allowance
  • Modern city centre office
  • Monthly catered lunches
  • Weekly breakfast
  • Unlimited drinks and snacks
  • Discounted gym membership
  • Hackathon events
  • Poker tournaments
  • Charitable matching gift program

*All interviewing and onboarding will be conducted remotely. While we have always offered flexible working at PEAK6, please note that our roles will eventually feature some return to office, following the guidance of local health authorities and the CDC.

How to Apply

If you are interested in applying you can find the first step in the link below.
We look forward to hearing from you and if you have any questions please feel free to contact us at

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