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Posted May 5, 2026

Senior Software Engineer | Belfast | OpenNMS

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At OpenNMS, a wholly owned subsidiary of NantHealth, we are looking for the best people who share our deep passion for collaboration and innovation, and our commitment to open source. OpenNMS is the world’s first fully open source enterprise-grade network service monitoring platform, and hundreds of enterprises are using it every day. Our people play a critical role in helping us deliver on our commitments through the work, talents and focus they bring to their role. Are you ready to join our community?
 
To ensure we can provide the best in network monitoring solutions, we focus on building the best team. Through holding true to the core NantHealth values – clarity, empathy, collaboration, integrity, a sense of community, and a pioneering approach – we are creating a vibrant culture where ideas can blossom, people can thrive, and success can flourish.
 
 

The OpenNMS Group is seeking a skilled and passionate Senior Software Engineer  to join our growing team focused on building and growing our open-source Network Monitoring Solution in use by numerous Fortune 500 companies. 

This position offers the flexibility to work remotely in either the United States or Belfast, Northern Ireland, dependent on work authorization.

Responsibilities include, but are not limited to:

Education & Experience Qualifications:

Knowledge, Skills, and Abilities:

"Bonus Points" if you have the following skills:

 

The salary range for applicable Belfast-based (Northern Ireland) applicants is below. Exact rate will be determined based on experiences and skillset, as determined throughout the interview process.

  • £50,000 - £70,000 base salary plus bonus potential.

We value each of our employee’s total wellness. From robust medical, dental, and vision insurance, to financial planning assistance, to physical and mental wellness discounts, including an optional annual subscription to the Headspace app and unlimited access to our online learning platform, we understand that our company succeeds when our employees succeed as individuals.
 
Additional notable benefits include:
  • Paid Time Off (hourly) / Flex Time Off (salaried) programs for Full Time employees
  • Growth and Development opportunities
  • 401(k), including a 3% company match 
  • Paid Holidays
  • Paid Parental Leave, including a flexible return-to-work program
  • Employee Assistance Program
  • Discounts on popular cell phone plan providers 
  • Life & Disability Insurance
  • Travel Assistance
  • Education Assistance Program
  • And much more!

OpenNMS is a wholly-owned subsidiary of NantHealth. NantHealth and OpenNMS provide equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training. 
Interested in this role?Apply on iHire