Senior UI/UX & API Developer

D&G Support Services; Belleville (IL); Hybrid; USD 110,000 - 150,000; Full time

Job summary

D&G Support Services seeks a Senior UI/UX & API Developer to design intuitive user interfaces and secure APIs for mission-critical transportation and logistics applications supporting DoD programs. You will lead front-end development, UX design, API engineering, and system integration within an Agile and DevSecOps environment.

The role is hybrid with on-site commitments at Scott Air Force Base, Illinois, and requires an active Secret clearance or the ability to obtain one.

Qualifications

• Active Secret security clearance or ability to obtain one.
• U.S. person status per program requirements.

Responsibilities

• Lead UI/UX development for intuitive user interfaces.
• Develop secure APIs, web services, and integration components.
• Collaborate in an Agile/DevSecOps environment to deliver mission-critical solutions.

Skills

UI/UX development

API development

IAM & SSO

Analytics integration

Relational databases

DevSecOps

RMF & STIG

Tools

Figma

Adobe XD

Sketch

Job description

Senior UI/UX & API Developer
Hybrid | Integrated Data Environment & Global Transportation Network Convergence (IGC) | Secret Clearance Required

If you are passionate about software development, user experience, and mission-critical technology and want to help modernize transportation and logistics systems supporting the Department of Defense, we would love to talk.

Why This Role Exists

The work we do has real impact, and the people behind it matter just as much.

D&G Support Services is seeking an experienced Senior UI/UX & API Developer to support the IGC Contract's application modernization, software development, and secure delivery initiatives. In this role, you will lead the development of intuitive, accessible user interfaces and secure APIs, web services, and integration components supporting mission-critical transportation and logistics applications.

This position offers the opportunity to combine hands-on front-end development, UX design, API engineering, system integration, and technical leadership within an Agile and DevSecOps environment.

What We Are Looking For

Preferred

• Experience supporting U.S. Transportation Command, Department of Defense logistics, or another mission-critical federal system.
• Experience modernizing legacy enterprise user interfaces and web services while maintaining operational continuity.
• Experience with UX design and prototyping tools such as Figma, Adobe XD, Sketch, or comparable products.
• Experience with enterprise identity and access management, single sign-on, and role-based access-control patterns.
• Experience integrating applications with business-intelligence or analytics platforms such as Apache Superset.
• Familiarity with Oracle, PostgreSQL, Amazon Aurora, Amazon RDS, or comparable relational databases.
• Familiarity with containerized and AWS-hosted environments, DevSecOps practices, DoD Risk Management Framework, and STIG/SRG requirements.

Clearance and Eligibility

• Active Secret security clearance or the ability to obtain and maintain one, as required by assigned duties and contract requirements.
• This role is restricted to U.S. person(s) (U.S. citizens, permanent residents, and other protected individuals under 8 U.S.C. 1324b(a)(3)).

Location

• Hybrid
• Remote work may be authorized consistent with program requirements.
• Personnel must be available for required on-site meetings, user-engagement activities, testing, demonstrations, release activities, classified-system access, or other assigned mission needs at Scott Air Force Base, Illinois.

Who We Are

At D&G Solutions, people come first; our teammates, customers, and the communities we serve. We are one of the fastest growing companies in the Washington, DC area and proud to be recognized nationally as a Best Place to Work. As an 8(a), Service Disabled Veteran Owned, and Women Owned Small Business, we bring ownership, accountability, and care to everything we do. We also deeply believe in giving back and proudly support organizations such as Homes for Our Troops, SemperK9, and Wreaths Across America.

Our teams are welcoming, collaborative, and deeply committed to mission success. We believe great work happens when people feel supported, respected, and trusted, and we work hard to create that environment every day.

What We Offer

Competitive salary | Comprehensive benefits | 401(k) | Bonus and profit sharing | Flexible hours | Education reimbursement | Generous paid time off

Final Note

If you want to work for a company that cares about its people, contribute to a mission that truly matters, and be part of a team where you are valued for who you are as well as what you do, we would love to hear from you.