Software Developer

DANE, LLC

Junior to mid-level Software Developer at DANE focusing on refactoring monoliths and building secure REST APIs. Ideal for early-career developers in an agile environment with learning opportunities.

Posted 4/12/2026full-timeFairfax • Virginia • 🇺🇸 United StatesMid-LevelSenior💰 $85,000 - $100,000 per yearWebsite

Tech Stack

Tools & technologies

ASP.NETAzureDockerGrafanaJavaJestJUnitKubernetesMicroservices.NETOraclePostgresPrometheusSpringSpring BootSpringBootSQL

About the role

Key responsibilities & impact

Implement user stories, fix defects, and refactor legacy codebases (i.e. .NET/Java) into maintainable modules and microservices.
Build RESTful services with ASP.NET Core, Spring Boot, or NestJS; document contracts with OpenAPI/Swagger.
Develop and test MuleSoft Anypoint flows (i.e. System/API/ Process layers); configure connectors, transformations, and error handling.
Write unit, integration, and API tests (xUnit/NUnit, JUnit, Jest); Maintain test data; participate in code reviews.
Contribute to pipelines (Azure DevOps/GitHub Actions), containerize apps with Docker, and assist with Kubernetes deployments.
Add structured logging, tracing, and metrics (App Insights, OpenTelemetry, Prometheus/Grafana); help troubleshoot incidents.
Implement OAuth2/OIDC, role-based access, input validation, and secure secrets handling; follow secure coding standards.
Work with relational databases (SQL Server, Oracle, PostgreSQL); assist in data mapping, migrations, and performance tuning.
Participate in stand-ups, backlog refinement, sprint reviews/retros; keep work items up to date and well-documented.

Requirements

What you’ll need

Must have a bachelor’s degree in computer science or related field.
Must have an Active DOD Secret Clearance
Minimum of 3+ Years of experience as a Software Developer
Minimum of 2+ years’ experience with .NET, Java, MuleSoft
Must have experience with .NET, Java, Oracle Database projects and applications.
Must have SQL Server, PostgreSQL, and MuleSoft experience.
Must have ASP.NET, Boot, or NestJS experience
Experience with Azure DevOps/GitHub Actions, Docker, and Kubernetes
Must have experience with OpenTelemetry, Prometheus/Grafana
Must have exceptional ability to break down complex situations and identify root causes for both technical and process-related issues
Must have strong verbal and written communication skills; ability to articulate technical concepts to non-technical users and collaborate effectively with development teams
Must have the proven ability to quickly learn new technologies and apply skills in evolving technical environments.

Benefits

Comp & perks

401(k)
401(k) matching
Dental insurance
Employee discounts
Health insurance
Paid time off
Tuition assistance
Vision insurance
Wellness resources

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

.NETJavaMuleSoftASP.NET CoreSpring BootNestJSSQL ServerOraclePostgreSQLRESTful services

Soft Skills

problem-solvingcommunicationcollaborationroot cause analysisadaptability

Certifications

DOD Secret ClearanceBachelor's degree in computer science