Principal Software Engineer (.Net)

Cprime, Inc; Los Angeles (CA); On-site; USD 180,000 - 250,000; Full time

Job summary

Cprime, Inc. is seeking a Principal Software Engineer to join the Firewire team in Los Angeles, focusing on scalable payment processing systems. You will drive technical leadership, build backend services and APIs, and own DevOps pipelines in an AI-enabled SDLC environment.

You will mentor engineers, collaborate with QA, Security, and Infrastructure, and lead initiatives to enhance observability, platform reliability, and secure coding practices across regulated environments.

Qualifications

• 10+ years of software engineering experience with 2+ years in a technical lead role.
• Bachelor’s degree in computer science or related field, or equivalent work experience.
• Proficiency in C#, .NET, SQL Server, and Azure Cloud solutions.
• Strong understanding of RESTful API design, OAuth2, and microservices architecture.
• Familiarity with DevOps tools such as GitHub Actions.
• Strong understanding of queuing mechanisms, multithreading, and distributed computing.
• Knowledge of container orchestration, release automation, and observability tools (e.g., Datadog).
• Experience implementing secure coding practices and compliance workflows in regulated environments.
• Strong analytical, multitasking, and organizational skills to manage testing on multiple projects.
• Experience with Agile methodology and tools like JIRA.
• Understanding of secure development processes in regulated environments (PCI DSS, SOC 2)
• Methodologies - Agile, Scrum.

Responsibilities

• Lead development of backend services and APIs to support Firewire platform operations including release engineering, DevOps pipelines, and system integrations.
• Collaborate with QA, Security, and Infrastructure to ensure seamless deployment and performance of Firewire services.
• Lead initiatives to improve CI/CD workflows, observability, and platform reliability.
• Implement monitoring and alerting solutions to ensure SLA adherence and rapid incident response.
• Mentor junior engineers and contribute to engineering best practices across the Firewire domain.
• Partner with business stakeholders to translate platform requirements into scalable technical solutions.
• Operate in an AI-driven SDLC environment and familiarity with AI code assistants like GitHub Copilot.
• Implement intelligent testing frameworks that auto-generate test cases, predict bugs, and enable self-healing.
• Lead and build test automation frameworks using standard API testing tools for REST-based APIs hosted on Azure cloud.
• Lead the creation of test strategy, test planning, and test execution for functional, integration, system, end-to-end testing, accessibility, database validations and automation.

Skills

NET/C#

Azure Cloud

High-throughput systems

Distributed architecture

Leadership

AI in SDLC

Test automation

RESTful APIs

Security

Education

Bachelor’s degree in Computer Science or related field

Tools

GitHub Actions

AKS

Service Bus

Datadog

Job description

Seeking a Principal Software Engineer to join the Firewire team, focusing on building scalable, secure, and resilient payment processing systems behind some of Americas most prominent technology companies. This role will drive technical leadership and innovation in Firewire engineering team, aligning with best practices.

Job Summary:

Analyzes, designs, programs, debugs, and modifies software enhancements and/or new products used in local, networked, cloud-based or Internet-related computer programs. Code may be used in commercial or end-user applications, such as materials management, financial management, HRIS, mobile apps or desktop applications products. Using current programming language and technologies, writes code, completes programming, and performs testing and debugging of applications. Completes documentation and procedures for installation and maintenance. May interact with users to define system requirements and/or necessary modifications.

• Lead development of backend services and APIs to support Firewire platform operations including release engineering, DevOps pipelines, and system integrations.
• Collaborate with cross-functional teams including QA, Security, and Infrastructure to ensure seamless deployment and performance of Firewire services.
• Lead technical initiatives to improve CI/CD workflows, observability, and platform reliability.
• Implement monitoring and alerting solutions to ensure SLA adherence and rapid incident response.
• Mentor junior engineers and contribute to engineering best practices across the Firewire domain.
• Partner with business stakeholders to translate platform requirements into scalable technical solutions.
• Operate in an AI driven SDLC environment and familiarity with AI code assistants like GitHub Copilot or similar tools.
• Implement intelligent testing frameworks that auto-generate test cases, predict bugs, and enable self-healing.
• Leads and builds test automation frameworks using Standard API testing tools for rest-based APIs hosted on Azure cloud.
• Leads the creation of test strategy, test planning, and test execution related to all aspects of testing like functional, integration, systems, end-to-end testing, accessibility, database validations and automation.

Qualifications:

• 10+ years of software engineering experience, with 2+ years in a technical lead role.
• Bachelor’s degree in computer science or related field, or equivalent work experience acceptable.
• Proficiency in several languages/platforms/libraries such as C#, .NET, SQL Server, and Azure Cloud solutions.
• Strong understanding of RESTful API design, OAuth2, and microservices architecture.
• Familiarity with DevOps tools such as GitHub Actions.
• Strong understanding of Queuing mechanism, multithreading/Multi-Tasking, Distributed computing.
• Knowledge of container orchestration, release automation, and platform observability tools (e.g., Datadog).
• Experience implementing secure coding practices and compliance workflows in regulated environments.
• Strong analytical, multitasking, and organizational skills to manage testing on multiple projects.
• Experience with Agile methodology and concepts using JIRA or similar Agile tools.
• Understanding of secure development processes in regulated environments (e.g. PCI DSS, SOC 2)
• Methodologies- Agile, Scrum.

Preferred Qualifications

• Experience in fast paced fintech organization.
• Familiarity with peer-to-peer payment processing domains, stability and release management experience.
• Contributions to open-source projects or technical publications.
• Demonstrated leadership in building scalable platform engineering practices.

Key Skill Requirements

• .NET/C#: Strong, recent hands-on development experience (within the last 12 months). Must still be actively coding.
• Regulated Industry: Extended tenure in highly regulated environments, preferably financial services, payments, or healthcare.
• Backend Development: Heavy or exclusive backend experience; not seeking primarily frontend/full-stack developers.
• High-Volume Systems: Proven experience building scalable, high-throughput transaction processing platforms. Must understand performance optimization and distributed architecture.
• Azure Cloud: Strong hands-on Azure experience, including AKS, Service Bus, Azure DevOps, and App Services. AWS-only backgrounds are not sufficient.
• Messaging/Distributed Systems: Kafka, Service Bus, MQ, multithreading, and queuing mechanisms are critical.
• Test Automation: Experience building automation frameworks and integrating testing into CI/CD pipelines, beyond basic unit testing.
• Monitoring: Datadog or equivalent observability tools, alerting, troubleshooting, and incident response.
• AI: Practical experience implementing AI tools or automation within the development lifecycle; must explain what they personally built or automated.
• Leadership: 10+ years of software engineering experience, including 2+ years in a technical lead capacity. Must demonstrate Principal-level technical depth while remaining hands-on.