Senior Software Developer

MTSI

USonsitePosted Jun 26, 2026
Posting intelligenceActively listedReposted 5×, possible evergreen/ghost posting

Skills

confluencepythonc++jiralua

About the role

Join our innovative team and contribute to cutting-edge simulations!

We are seeking a highly motivated and experienced Software Developer to join our growing team. In this role, you will be responsible for designing, developing, and maintaining software solutions for complex modeling and simulation applications. You will collaborate with a team of engineers and scientists to build robust, efficient, and scalable simulations for a variety of applications.

Responsibilities:

Design, develop, test, and debug software applications primarily in C++.

Develop and maintain modeling and simulation software, utilizing industry best practices.

Contribute to the architecture and design of new software features.

Write clear, concise, and well-documented code.

Collaborate effectively with team members in a fast-paced, agile environment.

Participate in code reviews and contribute to continuous improvement efforts.

Troubleshoot and resolve software defects.

Deploy and maintain applications on both Windows and Linux platforms.

Contribute to the development of test plans and execute testing procedures.

Stay up-to-date on the latest technologies and trends in software development.

Qualifications:

Bachelor's degree in Computer Science, Engineering, or a related field.

Minimum of 5 years of professional experience in software development using C++.

Strong experience in modeling and simulation principles and techniques.

Proficiency in developing applications for both Windows and Linux environments.

Solid understanding of object-oriented programming principles and design patterns.

Experience with version control systems (e.g., Git).

Excellent problem-solving, analytical, and communication skills.

Ability to work independently and as part of a team.

Bonus Points (Preferred):

Experience with the EAAGLES framework.

Familiarity with Agile development methodologies.

Experience with testing frameworks (e.g., Google Test, Catch2).

Experience with scripting languages such as Python or Lua.

Experience using Jira and Confluence for project management and documentation.

#LI-MM1

#ONSITE

#MissionDrivenDevs

Secret

Perks and Benefits

Vacation:

New Hires Accrue 20 days of PTO and 10 Holidays per Year

Health Insurance:

Zero Deductible Health Plans

Flexible Schedules:

Flex Schedules

Professional Development:

Up to $10,000 Annual Education/Training Reimbursement

ESOP:

Funded Stock Ownership Plan

401k Match+:

6% 401k Match + Immediate Vesting

Bonus Program:

Semi-Annual Bonus Opportunity

Mentorship:

Career Mentorship Programs

Why is MTSI a great place to work

Interesting Work:

Our co-workers support some of the most important and critical programs to our national defense and security.

Values:

Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry.

100% Employee Owned:

We have a stake in each other's success, and the success of our customers. It's also nice to know what's going on across the company; we have company wide town-hall meetings three times a year.

Great Benefits - Most Full-Time Staff Are Eligible for:

Starting PTO accrual of 20 days PTO/year + 10 holidays/year

Flexible schedules

6% 401k match with immediate vesting up to $9k annually

Semi-annual bonus eligibility (July and Decemeber)

Company funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account

Up to $10,000 in annual educational reimbursement

Other company funded benefits, like life and disability insurance

Optional zero deductible Blue Cross/Blue Shield health insurance plan

Track Record of Success:

We have grown every year since our founding in 1993.

Modern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance

MTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide.

For more information about MTSI, please visitwww.mtsi-va.com

Why is MTSI a great place to work

Interesting Work: Our co-workers support some of the most important and critical programs to our national defense and security.

Values: Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry.

100% Employee Owned: We have a stake in each other's success, and the success of our customers. It's also nice to know what's going on across the company; we have company wide town-hall meetings three times a year.

Great Benefits - Most Full-Time Staff Are Eligible for:

Starting PTO accrual of 20 days PTO/year + 10 holidays/year

Flexible schedules

6% 401k match with immediate vesting up to $9k annually

Semi-annual bonus eligibility (July and Decemeber)

Company funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account

Up to $10,000 in annual educational reimbursement

Other company funded benefits, like life and disability insurance

Optional zero deductible Blue Cross/Blue Shield health insurance plan

Track Record of Success: We have grown every year since our founding in 1993.

Modern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance

MTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide.

For more information about MTSI, please visit www.mtsi-va.com

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