Senior Web Page Developer

Responsibilities

Design and develop intuitive, visually stunning, highly functional web interfaces and HMIs.

Create modern, responsive, and accessible front-end experiences using contemporary web technologies.

Translate complex system outputs and data into clean, easy-to-navigate web applications.

Develop interactive web pages, workflows, and visual displays tailored to non-technical and executive-level users.

Drive UX/UI strategy through wireframing, prototyping, and iterative user testing.

Ensure front-end performance, responsiveness, and cross-browser stability.

Collaborate with systems engineers, designers, and other stakeholders to refine UI/UX requirements.

Apply best practices in maintainability, code quality, version control, accessibility, and user-focused design.

Troubleshoot UI issues, visual inconsistencies, and usability barriers in both new and legacy interfaces.

Required Qualifications

US citizenship and an active secret level clearance requried

Bachelor’s degree in Computer Science, Software Engineering, Human–Computer Interaction, Digital Media, or related field.

7+ years of professional experience in front-end web development and UX/UI engineering.

Demonstrated expertise in HTML5, CSS3, JavaScript, TypeScript.

Experience with modern web frameworks such as React, Angular, or Vue.

Expertise in UX/UI design methods, prototyping tools, and user-testing practices.

Experience designing HMIs for highly interactive or data-rich applications.

Strong ability to simplify complex workflows and present information visually and intuitively.

Skilled in debugging, performance tuning, responsive design, and accessibility.

Experience with Git or similar version control systems.

Proven ability to work both independently and collaboratively within cross-functional teams.

Preferred Qualifications

Master’s degree or higher in HCI, UX/UI Design, Software Engineering, or a related field.

Experience designing HMIs for mission-critical, engineering, or real-time operational systems.

Familiarity with CI/CD pipelines, DevSecOps workflows, or automated UI testing tools.

Experience developing in Linux or mixed-platform environments.

Experience producing executive-friendly data visualizations and workflow interfaces.

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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