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# Principal Software Engineer

- **Company:** Kastle Systems
- **Location:** Falls Church, VA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** C (Programming Language), Artificial Intelligence, Amazon Web Services, Computer Vision, Microsoft Azure, C++ (Programming Language), Cloud Computing, Databases, Linux, DevOps, Distributed Systems, H.264/MPEG-4 AVC, Python (Programming Language), NoSQL, Systems Development Life Cycle, Ansible, Tensorflow, Software Engineering, Google Cloud, Pytorch, High Efficiency Video Coding (HEVC), Delivery Pipeline, Large Language Models, Deep Learning, Gitlab, Git, RTSP, Git Flow, Kubernetes, Live Streaming, Bitbucket, Puppet, Terraform, Software Version Control, Docker, Jenkins, Golang
- **Published:** October 27, 2026
- **Apply:** https://www.careerbuilder.com/job-details/principal-software-engineer-falls-church-va--45d3a81e-64a6-460c-b324-2c1e6ebef103

## About the Role

Software Engineering, Artificial Intelligence (AI), Cloud Computing, Software Engineering, Leading Edge Technology, Architectural Design, Test Plan/Schedule, Tuition Fees, Linux Operating System, Source Code Control System (SCCS), * Bachelors degree required; Advanced degree preferred

 * At least 7 years of experience developing and shipping software for mass market products
 * Knowledge & experience with the SDLC and programming languages: Python, C, C++ and Go
 * Experience with the following:
o AI Training & Inference: LLM (Large Language Models), Deep Learning, Computer Vision, PyTorch, TensorFlow
o Cloud computing: AWS, GCP, Azure, Docker, Kubernetes
o Source code management systems such as Git and Bitbucket
o DevOps tools: Jenkins, Gitlab, GitOps
o Databases and NoSQL experience

 * Strong skills in troubleshooting production issues

Preferred, but not required:

 * Experience with:
o Infrastructure management tools such as Ansible, Chef, Puppet, or Terraform
o Designing and developing services using distributed systems principles
o Media codecs and streaming protocols. Examples include: H.264 (AVC), RTSP (Real Time Streaming Protocol), H.265 (HEVC), ONVIF, or others

## Description

We are looking for an experienced Principal Software Engineer who will be responsible for developing and maintaining our flagship product assets. This includes the architecture, design, development & testing of CheckVideo applications. This is an exciting position to work on the cutting edge of technology with a great team and make a meaningful contribution every single day. This is a hybrid position based out of our Falls Church, Virginia office., * Develop, test & deploy CheckVideo applications in a secure manner

 * Develop in a Linux environment using source code control system and deployment pipelines
 * Maintain and update production software as necessary
 * Scale and tune for performance to meet production demand
 * Secure our software by addressing any vulnerabilities and by writing high-performing, scalable, and secure software to meet customer demands.
 * Follow SDLC best practices for scalability, reliability & observability