Mid-Level Software Developer – .NET / DevSecOps

Seneca Resources; Lexington Park (MD); On-site; USD 90,000 - 120,000; Full time

Job summary

Seneca Resources is seeking a Mid-level Full Stack Software Engineer to support defense and technology projects in Maryland. You will contribute from concept through production deployment within an Agile team, building end-to-end software that balances quality and speed.

The role emphasizes collaboration with cross-functional teams, learning new tools, and delivering user-centric software that meets current and future operational needs, with opportunities to impact mission-critical systems.

Qualifications

• 2+ years of experience designing, modifying, and implementing software applications
• Proficiency in programming languages such as C#, C++, JavaScript, and .NET
• Experience working within Agile development methodologies
• Secret security clearance
• Bachelor’s degree in Computer Science, Software Engineering, or related field, or 5+ years of relevant experience
• Experience with front-end and back-end development to create complete, user-centric solutions

Responsibilities

• Develop end-to-end software solutions from concept to production deployment.
• Collaborate with cross-functional teams in an Agile environment to design, enhance, and optimize systems.
• Ensure solutions align with current and future operational needs and maintain high quality.

Skills

C#

C++

JavaScript

.NET

Agile

Front-end development

Back-end development

Education

Bachelor’s degree in Computer Science, Software Engineering, or related field

5+ years of relevant experience

Tools

React

Node.js

Database management systems

Automated testing tools

Job description

Position Title: Software Engineer, Mid X2

Location: Maryland

Clearance Requirements: Secret

Position Description

Join a dynamic team as a Mid-Level Full Stack Software Engineer supporting critical defense and technology projects. In this role, you’ll develop end-to-end software solutions in a fast-paced, Agile environment, contributing from initial concept through production deployment. You will collaborate with cross-functional teams to design, enhance, and optimize systems that make a difference. Bring your passion for learning new tools and techniques to help solve complex problems, and ensure solutions align with current and future operational needs. This position offers an excellent opportunity to work on impactful projects with a focus on innovation, quality, and technical excellence.

Top Requirements

• 2+ years of experience designing, modifying, and implementing software applications
• Proficiency in programming languages such as C#, C++, JavaScript, and .NET
• Experience working within Agile development methodologies
• Secret security clearance
• Bachelor’s degree in Computer Science, Software Engineering, or related field, or 5+ years of relevant experience
• Experience with front-end and back-end development to create complete, user-centric solutions

Nice to Have Skills

• Experience with Java, React, Node.js, or database management systems
• Ability to gather client requirements and automate workflows for optimization
• Familiarity with automated testing tools and system maintenance

About Seneca Resources

At Seneca Resources, we are more than just a staffing and consulting firm, we are a trusted career partner. With offices across the U.S. and clients ranging from Fortune 500 companies to government organizations, we provide opportunities that help professionals grow their careers while making an impact.

When you work with Seneca, you’re choosing a company that invests in your success, celebrates your achievements, and connects you to meaningful work with leading organizations nationwide. We take the time to understand your goals and match you with roles that align with your skills and career path. Our consultants and contractors enjoy competitive pay, comprehensive health, dental, and vision coverage, 401(k) retirement plans, and the support of a dedicated team who will advocate for you every step of the way.

Seneca Resources is proud to be an Equal Opportunity Employer, committed to fostering a diverse and inclusive workplace where all qualified individuals are encouraged to apply.