Senior Principal Software Engineer

Nightwing; Maryland; On-site; USD 122,000 - 253,000; Full time

Benefits offered by this job

Medical Insurance

Vision Insurance

Dental Insurance

401k plan

Paid Time Off

Job summary

Nightwing is seeking a Senior Software Developer specializing in Software Defined Networking to design and implement mission-critical SDN infrastructure at its Maryland on-site location.

The role requires deep knowledge of TCP/IP, L2/L3 protocols, NETCONF/YANG, and experience with Terraform, Ansible, Kubernetes, and Docker. A TS/SCI clearance with polygraph and US citizenship are required.

Qualifications

• Bachelor's degree in Computer Science, Computer Engineering, or related STEM field.
• 8+ years of software development experience.
• Proficiency in Python, Java, and C/C++.
• Expert-level understanding of TCP/IP, L2/L3 protocols, DHCP/DHCPv6, RIP, ARP.
• Strong background in NETCONF/YANG, REST APIs, and network management interfaces.
• Experience with infrastructure-as-code tools (Terraform, Ansible) and container orchestration (Kubernetes, Docker).
• Active TS/SCI clearance with polygraph
• U.S. citizenship required

Responsibilities

• Design and develop Software Defined Networking solutions using open-source controllers with long-term maintainability.
• Implement Layer 2/3 protocols, routing algorithms, and network management interfaces (e.g., YANG).
• Create infrastructure-as-code solutions using Terraform and Ansible and modern CI/CD pipelines.
• Develop and integrate SDN applications with Kubernetes and hybrid cloud environments.
• Lead code reviews focusing on quality, performance, and maintainability.
• Collaborate with network engineers and security teams to implement DevSecOps practices.
• Mentor junior developers on software craftsmanship and protocol implementation.
• Troubleshoot at application and packet levels with network processors and debugging tools

Skills

Python

Java

C/C++

Network protocols

REST APIs

Clean code

U.S. Citizenship

TS/SCI clearance

Polygraph

Education

Bachelor's degree in Computer Science/Engineering or related STEM

Tools

Terraform

Ansible

Kubernetes

Docker

GitLab

CI/CD

Job description

Nightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services to meet our customers’ most demanding challenges. Our capabilities include cyber space operations, cyber defense and resiliency, vulnerability research, ubiquitous technical surveillance, data intelligence, lifecycle mission enablement, and software modernization. Nightwing brings disruptive technologies, agility, and competitive offerings to customers in the intelligence community, defense, civil, and commercial markets.

Senior Software Developer - Software Defined Networking

At Nightwing, we are seeking an exceptional Senior Software Developer who embodies technical excellence and craftsmanship in Software Defined Networking. We need someone who doesn’t just write code, they architect elegant, performant solutions that stand the test of time. If you can spot the slop in poorly designed systems and have an innate drive to build SDN solutions that “just work forever,” this role is for you.

About the Role:

As a Senior Software Developer specializing in Software Defined Networking, you will be responsible for designing and implementing mission‑critical SDN infrastructure that demands reliability, performance, and maintainability. You will work with open‑source SDN controllers, create infrastructure‑as‑code solutions, and establish engineering standards that elevate our entire development practice. This is not a role for those who chase trends; We want an industry leader who understands the nuances of network protocols, distributed systems, and the subtle art of writing code that remains stable and maintainable for years.

This onsite role is based at our National Business Park, Maryland location supporting the Neptune program.

Responsibilities:

• Design and develop Software Defined Networking solutions using open‑source controllers with deep attention to architectural integrity and long‑term maintainability
• Implement Layer 2/3 network protocols, routing algorithms, and network management interfaces (e.g., YANG) with precision and performance optimization
• Create infrastructure‑as‑code solutions using Terraform, Ansible, and modern CI/CD pipelines that are reproducible and resilient
• Develop and integrate SDN applications with containerized architectures using Kubernetes, ensuring seamless orchestration across hybrid cloud environments
• Lead code reviews with a critical eye for quality, identifying architectural weaknesses, performance bottlenecks, and maintainability issues before they reach production
• Collaborate with network engineers and security teams to implement DevSecOps practices that don’t compromise on either velocity or security
• Mentor junior developers on software craftsmanship, network protocol implementation, and the principles of building systems that endure
• Work with physical network processors and network debugging tools to troubleshoot and optimize at both application and packet levels

Minimum Qualifications:

• Bachelor’s degree in Computer Science, Computer Engineering, or related STEM field
• 8+ years of software development experience with demonstrable expertise in building production‑grade network systems
• Deep proficiency in multiple programming languages including Python, Java, and C/C++ with the ability to choose the right tool for each problem
• Expert-level understanding of network protocols: TCP/IP stack, Layer 2/3 protocols, DHCP/DHCPv6, RIP, ARP, with hands‑on implementation experience
• Strong background in NETCONF/YANG, REST APIs, and network management interfaces
• Demonstrated ability to write clean, maintainable, performant code that other engineers respect and want to emulate
• Experience with infrastructure‑as‑code tools (Terraform, Ansible) and container orchestration (Kubernetes, Docker)
• Proficiency with CI/CD workflows using GitLab, Jenkins, or similar platforms
• Active TS/SCI clearance with polygraph
• U.S. citizenship required

What Sets This Role Apart:

This is not a position for engineers who prioritize speed over quality or follow the latest framework fad without understanding the fundamentals. We’re looking for someone who:

• Understands the nuances : You know why certain design decisions matter five years down the line, not just today
• Spots the slop : You can review code and immediately identify technical debt, performance issues, and maintainability problems
• Builds to last : Your solutions are elegant, well‑documented, and require minimal maintenance because they were designed correctly from the start
• Leads by example : Other developers look at your code and learn what excellence looks like

Security Clearance Required: TS/SCI with polygraph (active)

Salary & Benefits

The salary associated with this position ($122,000-$253,000) is commensurate with the selected candidate’s qualifications, years of relevant experience, and demonstrated level of expertise. Compensation will be determined based on these factors to ensure alignment with skills, responsibilities, and market standards.

• Nightwingoffers medical, vision and dental insurance coverage in addition to a 401k plan, PTO, Holidays, and additional insurances.

Nightwing is An Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age or any other federally protected class.