SDN Software Engineer — Security & DevSecOps

Openkrill; United States; Remote; USD 149,000 - 201,000; Full time

Benefits offered by this job

Medical/Dental/Vision

Company Stock Options

Home Office Budget

Job summary

Defense Unicorns seeks a Software Engineer to own the assessment, hardening, testing, and modernization of a Government-provided SDN baseline capability.

You will join the Defense Unicorns Navy Forward Deployed Engineering (FDE) team and be responsible for understanding an unfamiliar codebase, improving its security and maintainability, and delivering a reliable software baseline that can be sustained as mission requirements evolve.

Qualifications

• 5+ years of software engineering with ownership of production or legacy codebases.
• Strong Linux fundamentals and command-line troubleshooting.
• Strong networking fundamentals (TCP/IP, DNS, TLS, routing, segmentation).
• Experience with secure software development, vulnerability triage, patching, code review.
• Strong testing discipline across unit, integration, end-to-end, and regression testing.
• Containers, version control, build automation, CI/CD, registries, observability, and modern release practices.
• Strong problem-solving, communication, and documentation skills.
• U.S. citizenship and ACTIVE US Government SECRET security clearance or higher.

Responsibilities

• Own the technical assessment of an SDN codebase, including architecture, build process, dependency evaluation and management, runtime components, test coverage, security posture, and upstream open source relationships.
• Design and implement secure, maintainable changes that remediate vulnerabilities, improve resilience, and preserve traceability between upstream software, Government-owned code, configurations, and local patches.
• Develop trustworthy unit, integration, end-to-end, regression, and failure-mode tests for hardening and modernization changes.
• Institute AI-enabled tooling to enable the hardening and maintenance of the SDN application codebase.
• Debug complex behavior across application, Linux, and network boundaries, including traffic flows, routing, segmentation, identity, failover, telemetry, and performance.
• Partner with platform engineers on container readiness, packaging, CI/CD, deployment workflows, and automated security scanning while owning code-level triage and remediation.
• Support lab validation, demonstrations, release acceptance, and conversion of operational findings into durable fixes and regression tests.
• Produce clear technical documentation, participate in architecture and code reviews, communicate tradeoffs to stakeholders, and mentor other engineers.

Skills

C++

Python

Bash

Linux

Networking

Security

Documentation

Tools

Git

CI/CD

Docker

Kubernetes

Terraform

Job description

Defense Unicorns seeks a Software Engineer to own the assessment, hardening, testing, and modernization of a Government-provided SDN baseline capability.

You will join the Defense Unicorns Navy Forward Deployed Engineering (FDE) team and be responsible for understanding an unfamiliar codebase, improving its security and maintainability, and delivering a reliable software baseline that can be sustained as mission requirements evolve.