Software Engineer Principal Sr (.Net Full Stack

Position Overview

At PNC, our people are our greatest differentiator and competitive advantage in the markets we serve. We are all united in delivering the best experience for our customers and foster an inclusive workplace culture where all employees feel respected, valued, and have an opportunity to contribute to the company’s success. As a Principal Senior Software Engineer within PNC’s C&IB Midland organization, you will work in Pittsburgh, PA, Dallas, TX, Overland Park, KS, or Littlerock, AK.

You will design, develop, and evolve enterprise‑grade .NET applications. The role is hands‑on and delivery‑focused, with responsibility for influencing architecture within a defined domain, rather than owning enterprise‑wide strategy. The ideal candidate operates at an architectural level—designing scalable services, modernizing legacy components, and guiding teams through technical decisions—while actively participating in implementation and collaborating closely with architects, product owners, and engineering leadership to ensure solutions are robust, secure, and aligned with business needs.

• Design and implement scalable, resilient (.Active/.Active aware) application components using .NET and modern frameworks.
• Contribute to service‑oriented and microservices‑based architectures, applying sound design principles and patterns.
• Develop and maintain RESTful APIs, with clear documentation using Swagger/OpenAPI.
• Participate in legacy modernization efforts, including refactoring, incremental decomposition, and integration with newer services.
• Build and support containerized services using Docker, and collaborate with platform teams on orchestration and deployment patterns.
• Contribute to CI/CD pipelines (Jenkins, uDeploy, or equivalent), incorporating automated testing and security checks.
• Support event‑driven integrations using Kafka (or similar technologies).
• Work with relational and No
  
  SQL data stores (including MongoDB or equivalent) to support scalable application designs.
• Act as a technical leader within the team, providing guidance on design decisions, code quality, and best practices.
• Mentor mid‑level and junior engineers through code reviews, design discussions, and day‑to‑day collaboration.
• Partner with QA and support teams to ensure performance, reliability, and operational readiness.
• Communicate technical designs and tradeoffs clearly to peers, product owners, and engineering leadership.
• Contribute to monitoring, logging, and observability solutions.
• Participate in production support, root‑cause analysis, and continuous improvement efforts.
• Apply secure coding practices and performance optimization techniques consistently.

• Extensive hands‑on experience in .NET development within enterprise environments.
• Proven experience designing and building distributed or service‑based systems.
• Strong understanding of application architecture, design patterns, and integration strategies.
• Practical experience with Docker and CI/CD tooling (Jenkins, uDeploy, Azure Dev Ops, etc.).
• Experience with event streaming platforms (Kafka or similar) and No
  
  SQL data stores.
• Solid grasp of software security, performance tuning, and scalability considerations.
• Demonstrated ability to work effectively with product owners, business analysts, and peer engineering teams.
• Strong problem‑solving skills and a proactive, delivery‑oriented mindset.
• Clear written and verbal communication skills for technical audiences.
• Experience with Kubernetes or other container orchestration platforms, on‑ or off‑premises.
• Familiarity with Agile/Scrum practices and tools such as Jira or Azure Dev Ops.

• Experience deploying applications to cloud environments (Azure, AWS, or GCP).
• Experience supporting multi‑tenant systems or shared enterprise platforms.
• Understanding of enterprise compliance and data governance considerations.
• Prior experience contributing to API standards or shared platform components.
• Certifications (Nice to have, not required):
  • Microsoft Certified:
    Azure Developer or Solutions Architect (Associate or Expert)
  • Kubernetes fundamentals or CKA (optional)
  • Agile or Scrum certifications