VP, Application Development

Pennymac (NYSE: PFSI) is a specialty financial services firm with a comprehensive mortgage platform and integrated business focused on the production and servicing of U.S. mortgage loans and the management of investments related to the U.S. mortgage market.

At Pennymac, our people are the foundation of our success and at the heart of our dynamic work culture. Together, we work towards a unified goal of helping millions of Americans achieve aspirations of home ownership through the complete mortgage journey.

We are seeking an experienced Director, Application Development to lead the development of next-generation Communication Platforms s role will manage and mentor a talented team of application developers building robust, scalable, and highly available systems. The ideal candidate combines deep technical expertise in real-time communications and open-source tools like Free SWITCH, with proven experience delivering enterprise-grade software solutions integrated with platforms such as Zen Desk, Service Now, Five9, Zoom, and Call Miner.

You will guide the design, development, and deployment of VOIP/SIP systems, real-time APIs, and customer engagement platforms, driving innovation while ensuring quality, reliability, and performance. This will be hands on role that requires fluency in coding while managing a team.

• Lead, mentor, and develop a team of engineers focused on communication technologies and full-stack development.
• Set technical direction and ensure adoption of best practices in architecture, security, Dev Ops, and software delivery.
• Champion a high-performance, agile development culture aligned with Pennymac’s values and technology strategy.

• Oversee development of complex, enterprise-transforming communication applications using modern tech stacks.
• Drive the integration of communication platforms (e.g., Zoom, Five9, Zen Desk, Call Miner) with internal systems.
• Ensure the design and stability of VOIP infrastructure, including SIP servers and Free SWITCH deployments.
• Promote the use of design patterns, event-driven architecture, unit testing, and clean code principles across the team.

• Architect scalable, secure, and cloud-native solutions leveraging containerization (Docker/Kubernetes), CI/CD pipelines, and infrastructure-as-code (e.g., Chef, AWS CDK, Troposphere).
• Guide incident response and troubleshooting of high-impact production issues with composure and technical depth.
• Foster observability, monitoring, and performance tuning practices in VOIP and application environments.

• Work cross-functionally with business stakeholders, Product, QA, and IT to ensure applications deliver measurable business value.
• Translate business needs into clear technical goals, balancing short-term delivery with long-term maintainability.

• Bachelor’s degree in Computer Science, Engineering, or related field (or 3+ years equivalent experience).
• 8+ years of software engineering experience, including 3+ years in technical leadership roles.
• Proven success leading teams building real-time communication or VOIP-based applications.
• Hands-on experience with backend development (Go, Python, Node.js) and front-end frameworks (React, Type Script, JavaScript).
• Strong understanding of API design, microservices, and distributed systems.
• Experience working with:
• Free SWITCH and SIP protocols
• Zoom, Zen Desk, Five9, Call Miner or similar communication platforms
• Cloud infrastructure (AWS preferred)
• Dev Ops pipelines and Git-based workflows
• Knowledge of:
• Networking protocols (SIP, RTP, TCP/IP, DTMF, QoS)
• No
  
  SQL databases (Mongo
  
  DB)
• Container orchestration (Kubernetes), Docker
• Infrastructure as code (Chef, AWS CDK, Troposphere)
• Authentication protocols (OAuth2)
• Familiarity with Agile and SCRUM methodologies
• Strong communication and collaboration skills, with a demonstrated ability to work across teams and drive results.

• Experience with Free SWITCH module development or customization
• Familiarity with packet analysis tools (e.g., Wireshark)
• Prior experience with SMS, contact center, or CRM integrations
• Linux systems administration and scripting with Bash/Python
• Background in speech…