Senior Staff Software Engineer

NMI-posted 2 days ago
$130,000 - $160,000/Yr
Full-time • Mid Level
Remote
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As a Senior Staff Software Engineer at NMI, you operate beyond the scope of a single team, providing technical leadership and driving meaningful impact across systems, teams, and partner experiences. You lead through deep technical expertise, strong collaboration, and a commitment to engineering excellence. In this role, you will work across both the Partner Activation and Partner Administration teams, helping shape and deliver scalable, secure, and cohesive partner-facing platform capabilities. You will collaborate closely with Engineering Managers, Product Managers, Designers, and fellow Staff+ engineers to ensure our systems enable partners to integrate with NMI efficiently and confidently. This role balances hands-on engineering with technical strategy, focusing on improving partner onboarding, integration experiences, and the long-term health of the partner platform.

  • Technical Leadership & Architecture
  • Provide technical leadership for the team, influencing architecture and design decisions that span multiple teams.
  • Own and evolve critical platform areas including partner onboarding, developer tooling, authentication, user management, and the unified partner portal.
  • Identify long-term technical risks and opportunities, and lead initiatives to address scalability, reliability, security, and maintainability.
  • Set and reinforce engineering standards, patterns, and best practices across teams.
  • Cross-Team Collaboration & Influence
  • Collaborate closely with Engineering Managers and Directors to align technical strategy with delivery plans and team goals.
  • Partner with Product Managers, Directors, and Designers to translate product vision into technically sound, scalable solutions.
  • Act as a trusted technical advisor across teams, helping resolve complex cross-team dependencies and tradeoffs.
  • Drive alignment and consistency across partner-facing systems and experiences.
  • Hands-On Engineering & Delivery
  • Design, implement, and review high-impact code, particularly in complex or high-risk areas.
  • Lead technical discovery and execution for ambiguous or strategically important initiatives.
  • Ensure solutions are well-tested, observable, and production-ready.
  • Balance short-term delivery needs with long-term platform health.
  • Mentorship & Engineering Excellence
  • Mentor senior and mid-level engineers, helping them grow in technical depth, system design, and scope of impact.
  • Raise the quality bar through thoughtful code reviews, architectural guidance, and knowledge sharing.
  • Foster a culture of continuous improvement, learning, and technical curiosity.
  • Platform Quality, Security & Reliability
  • Champion secure-by-design principles, particularly around authentication, authorization, and partner data access.
  • Work closely with SRE and platform teams to ensure systems meet reliability, availability, and performance expectations.
  • Improve observability, operational readiness, and incident learnings across partner-facing systems.
  • Bachelor’s degree in Computer Science, Information Technology, or equivalent practical experience.
  • 8+ years of experience developing complex software applications in a commercial environment, with demonstrated impact at the Staff or Senior Staff engineer level.
  • Advanced, hands-on experience building and maintaining large-scale systems using .NET Framework / C# (preferred) and/or PHP, with a strong understanding of object-oriented design principles and software architecture.
  • Strong experience working with relational databases, particularly Microsoft SQL Server, including schema design, query optimization, performance tuning, and maintaining data integrity in production systems.
  • Proven experience designing, coding, deploying, and operating cloud-based solutions hosted on AWS, with an understanding of scalability, fault tolerance, security, and cost-aware design.
  • Experience designing and architecting scalable, distributed systems, with consideration for performance, reliability, and long-term maintainability.
  • Deep understanding of the Software Development Life Cycle (SDLC) and agile development methodologies.
  • Strong knowledge of security best practices, including secure coding principles and compliance requirements (e.g., OWASP Top Ten, PCI DSS, SOC 2, HIPAA, or similar).
  • Solid understanding of networking fundamentals, including HTTPS, DNS, SSL/TLS, and service-to-service communication patterns.
  • Deep knowledge of design patterns and their practical application in real-world systems.
  • Proven ability to translate complex business requirements into clear, technically sound solutions, particularly in ambiguous or evolving problem spaces.
  • Demonstrated success performing code reviews and maintaining high code quality standards, including testability, readability, and maintainability.
  • Proven ability to understand, debug, and evolve complex existing systems, often with limited documentation and changing requirements.
  • Experience mentoring engineers and influencing technical decisions through expertise, collaboration, and thoughtful guidance.
  • Strong problem-solving skills, with the ability to anticipate risks, identify root causes, and proactively address issues.
  • Excellent communication skills, with the ability to clearly explain complex technical concepts to both technical and non-technical stakeholders.
  • Proven ability to work independently while also fostering cross-team collaboration.
  • Experience working effectively with remote and globally distributed teams.
  • Experience with containerization and orchestration technologies such as Docker and Kubernetes.
  • Familiarity with CI/CD pipelines, automated testing, and deployment processes.
  • Experience with monitoring, logging, and observability tools (e.g., Datadog, New Relic, Logz.io, or similar).
  • Experience modernizing or incrementally evolving legacy systems toward cloud-native architectures.
  • Background in payments, fintech, or other high-availability, security-sensitive platforms.
  • Annual salary of $130,000 - $160,000 + bonus
  • A remote first culture!
  • Flex PTO
  • Health, Dental and Vision Insurance
  • 13 Paid Holidays
  • Company volunteer days
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