Systems Manager - BaaS Platform

ZipStaff is seeking a highly skilled Senior Software Engineer to join the Banking-as-a-Service (BaaS) team at a leading fintech and embedded finance organization. In this role, you will design, build, and support scalable, secure, high-performance systems that enable partner onboarding and embedded financial services across a broader partner ecosystem. This is a hands-on engineering role with technical leadership expectations - not a people-management or traditional systems-administration role. What You’ll Do:

• Design and develop APIs and microservices that support BaaS onboarding and partner integration.
• Collaborate with product managers, architects, and engineering teams to define technical requirements and deliver robust solutions.
• Support engineering excellence through code reviews, mentoring, and best practices in CI/CD, testing, and observability.
• Ensure compliance with SLA standards and contribute to monitoring and alerting systems.
• Participate in incident response and root-cause analysis to improve system reliability.
• Draft architectural and design documentation to support design options analysis and decision-making.
• Evaluate emerging technologies for applicability, feasibility, and adoption paths.
• Refactor and extend the existing codebase to fix defects and add features/functionality.
• Build durable, flexible systems that favor configurability over customization.

• 5+ years of software engineering experience, including at least 1 year in a technical leadership role.
• Strong portfolio of work developing secure, standards-compliant code across multiple platforms.
• Proficiency in C#, .NET, and SQL.
• Hands-on experience with Azure native services (APIM, Azure SQL, Cosmos DB, Key Vault), container technologies, and caching frameworks.
• Solid understanding of RESTful API design, OAuth2, and OpenAPI specifications.
• Familiarity with event-driven architecture (Service Bus, Event Hubs) and microservice-based patterns.
• Hands-on experience implementing observability dashboards and platforms (e.g., Datadog, Grafana).
• Ability to work in a fast-paced environment delivering iterative, mission-critical, customer-facing applications.
• Deep knowledge of Git, DevOps, Agile Scrum, and security best practices in financial services.
• Familiarity with compliance standards such as PCI DSS and SOC 2.
• Ability to work on-site in Pasadena, CA.
• Must be authorized to work in the United States without sponsorship now or in the future., * Prior experience in fintech or embedded finance platforms.
• Familiarity with partner onboarding workflows and SLA management.
• Contributions to open-source projects or technical publications.

About ZipStaff: ZipStaff partners with leading organizations to connect skilled technology professionals with high-impact contract opportunities. We focus on quality matches and long-term success. To apply, please submit your resume highlighting your C#/.NET, Azure, API/microservices, and financial services or BaaS platform experience.