Freelance Front End Web Developer Jobs in Alabama

MTSI is seeking a highly creative, user experiencefocused Senior Web Developer with deep expertise in front-end development, modern UX/UI practices, and high-quality HMI design. The ideal candidate excels at transforming complex, data-rich information into clean, intuitive, visually compelling web interfaces that enable nontechnical users and senior leaders to quickly understand system status, insights, and workflows. This role requires strong visual design instincts, exceptional frontend engineering skills, and a passion for crafting interfaces that simplify complexity.

• 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.

US citizenship and an active secret level clearance required

• 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.

• 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.

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

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.

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.

• 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 December)
• 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

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

MTSI embraces nine core values including our first core value of Employees come first.

Consistent with our Core Values, we are committed to Equal Opportunity, making decisions without regard to race, color, religion, sex, national origin, age, military/veteran status, disability, or any other characteristics protected by applicable law.

MTSI is committed to Equal Employment Opportunity and providing reasonable accommodations to applicants and employees with physical and/or mental disabilities.