Fintech Senior Software Engineer Jobs in California

Our client is looking for a Sr. Software Engineer for a year long contract opportunity located in West LA, CA.

Job Summary We are seeking a Senior Software Engineer to join our Risk Team, focusing on building scalable, secure, and resilient systems that support fraud detection, risk scoring, and compliance automation.

Work Location & Schedule

• Location: Greater Los Angeles Area, CA
• Hybrid Model: Minimum 2-3 days per week in-office (starting remote until local office onboarding is finalized)

• Architect and develop backend services and APIs to support risk operations, including fraud detection, transaction monitoring, and compliance workflows.
• Collaborate with cross-functional teams, including InfoSec, Data Science, and Compliance, to ensure seamless integration and performance of risk tools.
• Lead technical initiatives to improve SLA adherence, incident management, and root cause analysis systems.
• Write, test, and produce production-grade financial services code independently within an AI-driven SDLC environment.
• Lead the creation of test strategies, planning, and execution for functional, integration, accessibility, and database validation testing.
• Design and build test automation frameworks using standard API testing tools for REST-based APIs hosted on Azure Cloud.
• Implement intelligent testing frameworks that auto-generate test cases, predict defects, and enable self-healing test processes within CI/CD pipelines.
• Deploy observability and monitoring solutions to ensure optimal system reliability and performance.
• Mentor junior engineers and contribute to engineering best practices across the risk domain.

Required Qualifications

5+ years of software engineering experience, with 2+ years in a technical leadership role focused on C# and .NET.

Proficiency in Azure Cloud native technologies and experience with Azure cloud migrations.

Strong understanding of queuing mechanisms, multithreading, multi-tasking, and distributed computing.

Familiarity with AI code assistants (e.g., GitHub Copilot) and working in AI-enhanced Agile/Scrum workflows.

Strong proficiency in RESTful API design, OAuth2, microservices architecture, and 3rd-party system integrations.

Deep experience in SQL Server, database design, automated testing, Unit Testing, TDD, and CI/CD pipelines.

Familiarity with risk scoring models, fraud detection systems, compliance automation tools, and financial data security/privacy standards.

Preferred Qualifications

Experience in fintech or risk management technology platforms.

Familiarity with operational domains such as fraud case management, transaction scoring, and regulatory reporting.

Contributions to open-source projects or technical publications.

Must be authorized to work in the U.S. without sponsorship.

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Equal Opportunity Employer: Race, Color, Religion, Sex, Sexual Orientation, Gender Identity, National Origin, Age, Genetic Information, Disability, Protected Veteran Status, or any other legally protected group status.
At Randstad Digital, we welcome people of all abilities and want to ensure that our hiring and interview process meets the needs of all applicants. If you require a reasonable accommodation to make your application or interview experience a great one, please contact
Pay offered to a successful candidate will be based on several factors including the candidate's education, work experience, work location, specific job duties, certifications, etc. In addition, Randstad Digital offers a comprehensive benefits package, including: medical, prescription, dental, vision, AD&D, and life insurance offerings, short-term disability, and a 401K plan (all benefits are based on eligibility).
This posting is open for thirty (30) days.
Qualified applicants in San Francisco with criminal histories will be considered for employment in accordance with the San Francisco Fair Chance Ordinance.
Qualified applicants with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act.
We will consider for employment all qualified Applicants, including those with criminal histories, in a manner consistent with the requirements of applicable state and local laws, including the City of Los Angeles' Fair Chance Initiative for Hiring Ordinance.