Web Application Developer-Principal
- Level
- Principal
Not stated in the posting: salary, work type, visa.
Open. First seen 3 October 2026.
About the role
At NetSage, we are more than a government contractor—we are a mission-focused partner dedicated to advancing national security through exceptional cyber expertise. We believe our success begins with our people, which is why we invest in and care for our employees. We know that employee retention is mission continuity, and we are committed to building long-term careers where our people can grow alongside our customers' evolving missions.
Our employees enjoy meaningful work, competitive compensation, outstanding benefits, and opportunities to expand their skills across multiple mission areas. To learn more about our comprehensive benefits and what it's like to build your career at NetSage, visit our Careers page.
NetSage's standard text
Due to the sensitive nature of the work we support, some job descriptions intentionally provide a high-level overview of the role. If you'd like to learn more about a particular opportunity, we encourage you to apply directly or connect with us through our Get In Touch page. We'd be happy to discuss how your experience aligns with our mission and explore where you can make an impact.
Job Description:
We are seeking a Principal Web Application Developer to support the development and sustainment of a mission-essential Learning Management System (LMS). In this role, you will provide technical leadership across the full software development lifecycle. You will guide the development team through planning and execution, establish sprint and release priorities, and ensure new capabilities are designed, implemented, tested, and delivered on schedule.
The ideal candidate for this position will have experience leading development teams and have a strong background in web application development with familiarity working within an LMS environment. Please consider applying if you meet the following qualifications.
Required Qualifications:
- TS/SCI security clearance.
- A Bachelor of Science (B.S.) degree in Computer Science or a related field and ten (10) years of relevant experience. Also acceptable is a Master of Science (M.S.) degree and five (5) years or no degree and thirteen (13) years of relevant experience.
- Strong experience developing modern web applications and user interfaces.
- Proficiency with a range of programming languages, frameworks, and web technologies to include:
- Python
- Shell scripting
- Go
- HTML/CSS
- JavaScript/TypeScript
- AJAX
- JSON/XML
- jQuery
- React/Redux
- SQL and NoSQL databases
- Relational database technologies
- Experience with containerized application development and deployment using Docker or comparable technologies.
- Working knowledge of Kubernetes, including application deployment, scaling, administration, and troubleshooting.
- Experience with virtualization technologies such as VMware vCenter.
- Experience with Section 508 accessibility requirements and their application to UX/UI design and implementation.
- Experience leading a development team using Agile methodologies.
What this role asks for
Standard for software engineering roles
Python
Common in software engineering postings at any company.
84% of this description is written for the role. The rest is NetSage's standard text, folded away below.
Read against NetSage's other open postings on this site.
The team: Development HIRES STEADILY
This role is one of 16 open in Development. 2 were posted in the last 30 days and the oldest in April: a team that hires all year rather than one being built.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
Python (14 of 16), Kubernetes (8 of 16), Docker (7 of 16), Java (7 of 16), LLM (5 of 16), Machine Learning (5 of 16), Spark (5 of 16)
OTHER ROLES ON THIS TEAM
- Java Software Engineer-Principal posted Oct 8
- Full Stack Developer-Principal posted Oct 8
- Signals Analytic Technique Developer-Principal posted Sep 18
- Signals Analytic Technique Developer-Senior posted Sep 18
- Signals Analytic Technique Developer-Mid posted Sep 18
- Application Developer-Senior posted Sep 18
- Cybersecurity AI Developer-Senior posted Aug 28
- Applications Developer-Mid posted Aug 28
- Application Developer-Mid posted Jul 30
- Systems Engineer-Principal posted Jul 16
- Analytic Developer-Junior posted Jul 3
- Cyber Software Engineer-Principal posted Jul 2
- Dataflow Engineer-Senior posted Jul 2
- AI Analytic Software Engineer-Senior posted Apr 8
- AI Software Engineer-Senior posted Apr 8
From the team and dates on NetSage's own job board.
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