Jobs in Kingston, Canada

NMI is looking for a passionate Senior Software Engineer to join our Development team as a result of NMI’s continued growth and investment in the underlying systems.

As a senior developer with strong experience in C# and/or PHP, you will join a team of industry-leading experts that are talented, ambitious and want to drive the continued development of our payment processing services. Our developers are responsible for software services and deliverables that support the processing of billions of transactions for hundreds of thousands of merchants every year. These applications have to be efficient, reliable, redundant, secure, highly‑available and scalable. A background in the development of accounting or billing systems is preferred for this specific role.

• Design, develop, and maintain core billing and invoicing systems using C# and PHP technologies
• Take ownership of architectural and design decisions for billing system components
• Lead technical discussions, participate in code reviews, and drive best practices in maintainability and performance
• Actively mentor and support the growth of junior team members
• Lead improvements to CI/CD pipelines and development processes
• Implement monitoring, logging, and alerting systems to proactively identify and resolve issues
• Optimize database queries and system architecture to handle growing merchant and transaction volumes
• Implement robust security measures to protect sensitive payment and merchant data and ensure compliance with PCI DSS standards
• Communicate project status, risks, and technical decisions effectively to both technical and non‑technical stakeholders
• Collaborate closely with Product Owners, Developers, and QA teams to ensure successful product releases
• Proactively identify, assess, and mitigate risks, including security risks, throughout the software development lifecycle
• Provide feedback and resolutions to escalated support issues
• Research and evaluate new technologies and methodologies to improve system performance and developer productivity

• Bachelor's degree in Computer Science or equivalent experience
• Minimum of 5 years of experience developing complex software applications in a collaborative, agile environment
• Advanced proficiency in C# and/or PHP, with strong understanding of object‑oriented design principles and design patterns
• Advanced experience with database design, optimization, and performance tuning
• Strong knowledge of security and compliance best practices (e.g. OWASP, PCI)
• Excellent communication skills, with a proven ability to mentor others, contribute to a strong team culture, and work with others across teams to move projects forward
• Experience designing and architecting scalable, distributed systems with consideration for performance, reliability, and maintainability
• Ability to translate complex business requirements into technical solutions
• Proven track record of code reviews and maintaining code quality standards
• Proven ability to understand, debug, and enhance complex existing systems with limited documentation and evolving requirements
• Experience with logging systems (such as Logz.io) and optimizing logs preferred
• Experience with containerization (e.g. Kubernetes, Docker, etc.) preferred
• Experience with monitoring and alerting systems (e.g. DataDog, NewRelic, etc.) preferred
• Experience with CI/CD pipelines, automated testing, and deployment processes preferred

As well as being a part of something exciting everyday, you will also receive the following benefits:

• Competitive annual salary + bonus
• A remote first culture
• Health and Dental Coverage
• Company paid Life and Disability insurance
• 11 paid holidays
• Annual Registered Retirement Savings Plan (RRSP)

NMI enables our partners with choice, and challenges the one‑size‑fits‑all approach to payments. You've probably used NMI in the last 24 hours without even realizing it. We’re the platform that powers success for innovative tech created by SMBs, entrepreneurs and fintech startups. We’re creative problem solvers who help visionaries smash through boundaries and think beyond what’s possible so they can think about what’s next. But we’re not just built for the tech savvy. We democratize the latest payments technology so that everyone can realize the benefits of easy payments across the full spectrum of commerce. We’re all about enabling more payments in more ways and more places.

We believe that having a diverse group of employees strengthens both our work and our workplace. We’re focused on making NMI more diverse and welcoming with initiatives like having a dedicated Diversity, Equity & Inclusion action group, diversity goals for hiring, anonymized resume screening, affinity groups such as our Women's network and LGBTQ+ Network, open forums for discussions on diversity and social justice, and measuring inclusion and belonging as part of our regular employee engagement surveys.

NMI is committed to providing equal employment opportunity for all persons regardless of race, color, religion, sex, age, marital status, national origin, sexual orientation or sexual identity, genetic information, citizen status (except those that do not have the legal right to be employed in the United States), disability, military service, service member, veteran status, or any other basis protected by applicable law.

Please be aware that all offers of employment are made subject to receipt of satisfactory background and financial checks.

Attention job applicants: Please note that in compliance with the data protection regulations within your jurisdiction, any personal information submitted with your job application may be collected and used by NMI for the purpose of recruitment and employment‑related activities. By submitting your application, you acknowledge and provide explicit consent to the processing of your personal information as described in our privacy policy found on our website. For more information on how we process your information, please read our privacy policy here: https://www.nmi.com/legal/privacy-policy/.