sr. systems engineer.pasadena, californiaposted august 26, 2026 job detailssummary$60 - $65 per hourtemp to permno requirementscategorycomputer and mathematical occupations reference 1344662 job details job summary: Our client is looking for a Sr. Systems Engineer for a 4 month contract opportunity located in West LA, CA.

location:

Pasadena, California job type: Contract to Perm salary: $60 - 65 per hour work hours: 8am to 5pm education: No Degree Required responsibilities: Job Summary We are seeking a highly skilled and motivated Senior Software Engineer to join our Banking-as-a-Service (BaaS) team, supporting partner onboarding and platform enhancement initiatives. This role will be instrumental in building and supporting scalable, secure, and high-performance systems that enable embedded financial services across a broader partner ecosystem. Key Responsibilities 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 the development of monitoring and alerting systems.

Contribute to incident response and root cause analysis to improve system reliability.

Draft architectural and design documentation to assist design options analysis and decision-making.

Evaluate emerging technologies from applicability to feasibility and adoption paths.

Refactor and extend the existing codebase to fix defects and add features/functionality.

Create systems that are durable and flexible by developing for change, favoring configurability over customization.

qualifications:

Required Qualifications 5+ years of experience in software engineering, with at least 1 year in a technical leadership role. Strong portfolio of work showing experience developing secure and standards-compliant code across multiple platforms. Proficiency in C#, .NET, SQL, and hands-on experience with cloud platforms (Azure native services such as APIM, Azure SQL, Cosmos DB, and Key Vault), container technologies, and caching frameworks. Solid understanding of RESTful API design, OAuth2, and OpenAPI specifications. Familiarity with event-driven (Service Bus, Event Hubs) and microservice-based architecture patterns. Hands-on experience leveraging and implementing observability dashboards and platforms (e.g., Datadog, Grafana). Ability to handle a fast-paced environment for iterative project turnarounds on mission-critical, customer-facing applications. Deep knowledge of Git, DevOps, Agile Scrum, and security best practices in financial services and compliance standards (e.g., PCI

DSS, SOC 2

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

skills:

.NET,APIM,APIs,Event Hubs,C#,caching,cloud,Refactor,code reviews,container technologies,CI/CD,Cosmos DB,Datadog,DevOps,Git,Grafana,Key Vault,microservices,Azure native,OAuth2,open-source projects,OpenAPI,PCI DSS,system reliability,RESTful API design,Azure SQL,SQL,Agile Scrum,software engineering,decision-making,high-performance,Banking,dashboards,design documentation,onboarding,fintech,embedded finance,incident response,financial services,standards-compliant,compliance standards,mentoring,Ensure compliance,root cause analysis,security best practices,SLA management,Support engineering,technical leadership,technical publications,testing,workflows

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 HRsupport@randstadusa.com. 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.