Senior Software Engineer - Money Movement

As a Senior Software Engineer on the Money Movement - Innovation team, you'll build the systems behind NMI's bank-to-bank payments: public APIs, internal tools, and third-party integrations, using Scala, TypeScript, and C#, with TDD and containerized microservices on AWS (Docker, Lambda, ECS). You'll work AI-first, using tools like Claude Code daily and helping the team sharpen how it uses them. We're looking for someone who digs into ambiguous, high-stakes problems and owns them end to end.

About the team: 

The Innovation team sits at the center of NMI's money movement strategy. Formed through NMI's acquisition of Dwolla, we build and evolve the bank payment platform NMI's partners rely on, spanning open banking, push-to-card, account verification, and new payment rail integrations.

We work asynchronously, communicate often, and expect blockers to be surfaced early. Psychological safety and continuous improvement are how we keep our high pace sustainable.

You will:

• Design and develop applications in Scala, TypeScript, and C#
• Use AI-first tools like Claude Code to research approaches, generate code, and strengthen review and testing
• Own code quality and production issues: reviews, bug reports, and troubleshooting
• Translate business needs into technical solutions with stakeholders and your team
• Participate in agile ceremonies (refinement, planning, standups, retros) and help improve how the team works
• Apply system design expertise across messaging (RabbitMQ), data at scale (SQL, S3), database/caching (RDS, Redis, DynamoDB), and CI/CD (Git, Jenkins, CloudFormation, Terraform)

Key duties:

• Design, build, and enhance features within FeeNavigator using PHP/Laravel and Vue
• Develop efficient database queries and optimize MySQL performance as needed
• Own the quality of your work end-to-end through developer-led testing - writing unit, integration, and end-to-end tests, and validating your own changes through to production
• Improve the health of a large, established codebase by refactoring complex areas and decomposing high-complexity components into maintainable, well-structured code
• Document critical business logic, application workflows, and key architectural decisions
• Collaborate with Product Managers to refine requirements and contribute to technical solution design
• Participate in code reviews to maintain high engineering standards and share best practices
• Work with SRE to ensure software is observable, resilient, secure, and production-ready
• Diagnose and resolve incidents, defects, and performance bottlenecks in collaboration with cross-functional teams
• Contribute to continuous improvement of development processes, tooling, and engineering practices

  You may be a fit for this role if you have

  Minimum requirements:

  • Strong grasp of programming languages, techniques, security, and architecture
  • Ability to take ownership of assigned work and complete it without close oversight
  • Experience with AI-first coding tools (e.g., Claude Code, Codex, Copilot)
  • Experience mentoring and participating in code reviews
  • 4+ years developing applications with object-oriented or functional languages
  • Bachelor's degree in Computer Science (or related field), or 4+ years of additional equivalent experience

    Preferred qualifications:

  • Working knowledge of distributed system design: event-driven microservices, containerized apps, service discovery
  • Experience with Agile practices
  • Experience with TDD and Continuous Integration
  • Experience with paired programming or mobbing
  • Experience with Scala, cats, or other functional programming tools and libraries
  • Experience building and sharing AI skills or similar
  • Exposure to ACH, payments, or other reliable/secure systems is a plus

Do you feel like you have a slightly out of the ordinary career path or history? We are open to all walks of life and very willing to hear your story. Please don't feel like this should be a barrier to securing a great career at NMI! We appreciate success can come in all shapes and sizes. Fill in the 'Additional Info' box on our application to tell us more about your path.

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

• Competitive salary + bonus 
• A remote first culture!
• Flex PTO 
• Health, Dental and Vision Insurance
• 13 Paid Holidays
• Company volunteer days

About us

NMI, a global leader in payment technologies, allows software and sales professionals to deliver payment innovations to their clients without having to build payment expertise in house. 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. Our mission is to use our expertise to enable more payments, in more ways and more places. We provide ISOs, Fintech Innovators and Technologists the freedom to focus on what they do best, liberating them from restricted payment solutions and giving them access to the latest payment technology now and in the future.

Equal Opportunity

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/

Salary range, depending on experience:

$90,000—$130,000 USD