Senior Mendix Developer Jobs in Washington (NOW HIRING)

Job Title: Senior Software Developer
Location: Remote, USA
Position Type: Full-TimeAbout the company:
At VivSoft, we aim to solve complex federal problems using emerging and open technologies in a collaborative and rewarding environment. VivSoft is a diverse team of strategists, engineers, designers, and creators experienced in building high-performance, effective software, with a focus on impactful organisational design and software delivery dynamics. We build secure Software Factories based on DoD reference designs and NIST Frameworks for Cloud and DevSecOps. These factories deliver AI/ML Applications, Data Science Platforms, Blockchain and Microservices for DoD, Healthcare and Civilian Agencies
Job Summary:
The Senior Software Developer serves as a key technical expert responsible for designing, developing, modernizing, and sustaining low-code applications that support FMCSA's mission-critical business processes. This role leads complex application development efforts using Business Orchestration and Automation Technologies (BOAT) platforms, ensures secure integration with enterprise systems, and delivers high-quality, scalable solutions in compliance with federal IT, security, and privacy standards. The Senior Software Developer works closely with Project Management, Business Analysts, and Government stakeholders throughout the application lifecycle.
Key Responsibilities:

• Lead the design, development, and modernization of low-code applications to streamline workflows and improve data exchange for FMCSA programs.
• Develop scalable, secure, and maintainable application components using approved low-code platforms and supporting technologies.
• Translate business and functional requirements into technical designs and application solutions.
• Integrate low-code applications with databases, APIs, legacy systems, and cloud-based services.
• Enforce secure coding practices and ensure compliance with NIST, FISMA, DOT, and FMCSA security and privacy requirements.
• Perform code reviews, debugging, performance tuning, and application optimization.
• Support application onboarding, enhancements, and sustainment activities across base and option periods.
• Collaborate with Business Analysts and stakeholders to refine requirements and implement usability improvements.
• Prepare and maintain technical documentation, including architecture diagrams, configuration artifacts, and deployment instructions.
• Support testing activities, including unit, integration, security, and user acceptance testing.
• Provide technical guidance and mentorship to intermediate developers as needed.
• Participate in Agile ceremonies and contribute to continuous improvement of development processes.

Skills & Qualifications:

• Bachelor's degree in Computer Science, Information Systems, or a related technical discipline (or equivalent experience).
• Minimum 8-10 years of software development experience, including hands-on low-code or rapid application development platforms.
• Demonstrated experience designing and developing enterprise applications in federal or large-scale regulated environments.
• Strong proficiency with:
  • Low-code platforms (e.g., Power Platform, Appian, ServiceNow, Mendix, OutSystems, or equivalent)
  • Web technologies (HTML, CSS, JavaScript)
  • API development and system integration (REST/SOAP)
  • Relational databases (SQL Server, Oracle, PostgreSQL, etc.)
• Experience with Agile/Scrum development methodologies.
• Solid understanding of secure application development and DevSecOps practices.
• Familiarity with federal IT security standards, including NIST SP 800-53, FISMA, and Privacy Act requirements.
• Experience supporting application sustainment, enhancements, and operational support.
• Strong analytical, problem-solving, and communication skills.
• Ability to work effectively with Government stakeholders and cross-functional teams.

Benefits:

• Comprehensive Medical, Dental, and Vision Plans (Healthcare benefits are 100% employer-paid for employees only)
• Life Insurance
• Paid Time Off (Flexible/Combined PTO, Bereavement Leave, 11 Company Paid Holidays)
• 401K Retirement Plan with employer match
• Professional Development Training Reimbursement.