Software Engineer | OpenNMS

Posted Tuesday, March 10, 2026 at 4:00 AM

At OpenNMS, a wholly owned subsidiary of Nant Health, 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 Nant Health 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 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 allows the flexibility to work remotely from the United States, or remotely out of our office location in Belfast, Northern Ireland, dependent on work authorization.

• Help architect, design, and develop scalable features to meet product deliverables.
• Collaborate with other developers, architects, QA, devops and product management teams.
• Write well-designed, testable code including unit tests and basic documentation.
• Integrate software components into a fully functional software system.
• Be a part of discussions about code design, architecture, and refactoring to balance technical debt against delivering functionality.
• Work with little or no supervision.
• Apply software engineering best practices across the development lifecycle, including agile methodologies, coding standards, code reviews, source management, build processes, testing, and operations

• Bachelor’s degree (preferably in Computer Science or a related field), although commensurate experience will be considered in lieu of degree
• Strong working knowledge in Java (3+ years)

• Must have a “can do” attitude and a hacker mindset to make things work in a complex product environment
• Experience having designed, implemented, and delivered, highly performant and scalable, software to a large customer base successfully.
• Solid knowledge of SQL and No
  
  SQL data stores and efficient data schemas
• Understanding of message systems such as Kafka, ActiveMQ
• Solid understanding of IP networking principles and network/application security
• Experience working in Agile environment.
• General Dev Ops knowledge: CI/CD, automation, build, deployment
• Working knowledge with Linux/UNIX and familiarity with shell scripting

• OSGi and/or Karaf
• Monitoring Systems
• Time Series DB

The salary range for applicable US-based applicants to th is position is below. The specific rate will depend on the successful candidate’s qualifications, prior experience as well as geographic location.

$90,700 - $126,000 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.

• 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 Nant Health. Nant Health 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.