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Job Title: Sr. Systems Manager – BaaS Platform (C# / .NET / Azure)
Location: Pasadena, CA (On-site)
Employment Type: Contract (W2 through ZipStaff — No C2C or 1099)

About the Opportunity:

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.

Required Qualifications:

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.

Preferred Qualifications:

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.

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