Principal Software Engineer
Los Angeles, CA
Category: Development
Industry: Financial Services
Reference ID: JN -072026-107846
Date Posted: 07/09/2026
Shortcut: http://careers.eliassen.com/TgBTVx
Description:
On-site in Los Angeles, CA
Our client seeks a Principal Software Engineer to lead backend services and APIs for a payment processing platform supporting prominent technology partners. The role will drive technical leadership across release engineering, DevOps pipelines, observability, reliability, and secure SDLC in an AI-enabled environment.
This is a contract to hire opportunity. Applicants must be willing and able to work on a w2 basis and convert to FTE following contract duration. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.
Rate: $70.00 to $76.00/hr. w2
JN -072026-107846
Responsibilities:
- Analyze, design, program, debug, and modify software enhancements and new products across local, networked, cloud, or internet applications.
- Develop backend services and RESTful APIs supporting platform operations, release engineering, DevOps pipelines, and integrations.
- Collaborate with QA, Security, and Infrastructure to ensure reliable deployments and performance.
- Lead initiatives to improve CI/CD workflows, observability, and platform reliability.
- Implement monitoring and alerting to meet SLAs and enable rapid incident response.
- Mentor engineers and promote best practices across the domain.
- Translate platform requirements into scalable technical solutions with stakeholders.
- Operate in an AI-driven SDLC and leverage AI code assistants.
- Implement intelligent testing frameworks that auto-generate tests, predict defects, and enable self-healing.
- Lead test automation frameworks using standard tools for REST-based APIs on Azure.
- Integrate test suites into CI/CD pipelines.
- Lead test strategy, planning, and execution for functional, integration, system, end-to-end, accessibility, database validation, and automation.
Experience Requirements:
- 8+ years of software engineering experience with 2+ years in a technical lead role.
- Proficiency with C#, .NET, SQL Server, and Azure cloud solutions.
- Strong understanding of RESTful API design, OAuth2, and microservices.
- Familiarity with DevOps tools such as GitHub Actions.
- Knowledge of queuing mechanisms, multithreading, multitasking, and distributed computing.
- Experience with containers, release automation, and observability tools such as Datadog.
- Secure coding practices and compliance workflows in regulated environments (e.g., PCI DSS, SOC 2).
- Strong analytical, multitasking, and organizational skills.
- Experience with Agile methods and tools such as JIRA.
- Preferred: fintech experience, peer-to-peer payments, stability and release management, open-source or publications, and leadership in scalable platform engineering.
Education Requirements:
Bachelor's degree in Computer Science or related field, or equivalent work experience.
Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.
W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:
· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.
If you have any indication of fraudulent activity, please contact fraud@eliassen.com.
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Eliassen Group is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status. Eliassen Group’s Affirmative Action Plan (AAP) is available for inspection by any employee or applicant for employment upon request, during normal business hours of Monday through Friday, 8:30am to 5:30pm EST. Interested persons should contact Phaedra Wells at pwells@eliassen.com for assistance. It is unlawful in Massachusetts and Maryland to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
Applicants with disabilities that believe they require an accommodation or assistance with a position, please email our HR team at hradmin@eliassen.com. This email inbox is designed exclusively to assist job seekers whose disability prevents them from being able to apply online. Emails sent for other purposes will not receive a response.
Please be advised that a number of fraudulent job postings have been released under the Eliassen Group brand.
Unfortunately, fraudulent job postings can happen. If anyone reaches out to you about an open position connected with Eliassen Group, never provide personal or financial information to anyone who is not clearly associated with Eliassen Group
If anyone seemingly from Eliassen Group has ever requested this personal information in the past or does so in the future, please contact fraud@eliassen.com.
Please ensure that you are working directly with us by confirming the following:
- When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
- Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group, as indicated above