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 NMI 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. How We Work - Our Core Values * Be a Good Person, It's Simple. We treat everyone fairly and with respect. We lead with kindness, humility and integrity. We take the time to understand each other and our customers. And we serve with care, because customers are never a transaction, and always our focus * Align, Trust & Go. We debate openly, listen carefully and challenge thoughtfully. Once we decide, we move forward together - holding ourselves accountable to our commitments, and focusing on what matters most to our customers. That alignment creates momentum. * Raise the Bar. Good enough isn't enough. We stay curious, measure everything, stay honest about progress and keep pushing ourselves to think creatively. We drive change, again and again. And leave things better than we found them. When we raise the bar, our customers feel it too. 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) 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…