Low-Code Application Developer

About the Role

The Low-Code Application Developer is responsible for ensuring the stability, support, and continuous modernization of critical enterprise applications that underpin core business operations. This role will serve as the primary technical owner of a mission-critical legacy environment built on the Mendix Platform. This position requires a hands-on developer comfortable working in complex, undocumented systems who can balance immediate support needs with long-term improvements. The role will collaborate closely with IT leadership, business stakeholders, and external vendors to maintain the current platform while contributing to decisions regarding upgrades, refactoring, or potential replacement with modern or commercial solutions. This is an onsite role based in our McLean, VA office.

Responsibilities

• Serve as the primary technical owner for internally developed web applications built on the Mendix platform.
• Maintain, troubleshoot, and enhance legacy applications to ensure stability and performance for business-critical operations.
• Analyze and reverse-engineer existing systems to understand business logic, database structures, and integrations where documentation is limited.
• Design and implement improvements to application architecture, code structure, and database design to support long-term maintainability.
• Build RESTful APIs or service layers to enable integration between enterprise applications and middleware.
• Collaborate with business stakeholders to understand existing workflows and translate them into technical solutions.
• Document system behavior, architecture, and dependencies to improve long-term supportability.
• Provide technical leadership for the platform while remaining hands-on in development and support.

Qualifications

• Bachelor’s degree in Computer Science, Information Systems, or related field.
• 3+ years of experience developing and supporting custom software applications.
• Solid experience with SQL querying.
• Experience designing APIs or service-based integrations.
• Experience working with existing / legacy ("brownfield") systems.
• Experience with HTML, CSS, and JavaScript for web applications.
• Strong troubleshooting and problem-solving skills in complex codebases.
• Ability to work independently and take ownership of technical solutions.

Preferred Qualifications

• Familiarity with low-code platforms such as Mendix or PowerApps.
• Experience querying Snowflake databases.
• Experience with Git, Azure DevOps, or CI/CD pipelines.

Work Environment and Physical Demands

The role involves prolonged periods of focused work at a desk, collaborating with colleagues, analyzing data, and developing strategies. It requires effective communication, sharp visual acuity for reviewing complex documents, and detailed computer work. Occasional travel to various locations, including construction sites, is necessary. The ability to lift and move objects up to 10 pounds regularly and up to 25 pounds occasionally is required. The primary workspace is a professional office with quiet-to-moderate noise and light levels, but visits to active construction sites with outdoor conditions, louder noise, and moving equipment are also part of the role.

Company Culture

This is a demanding, high-performance environment where candidates are expected to be energized by challenges, thrive under pressure, and commit to achieving exceptional results. Flexibility to work extended hours, especially during critical project phases or client deadlines, is required. Responsiveness to time-sensitive matters and emergencies outside regular working hours is essential.

Benefits

• Health/dental/vision benefits
• Paid time off
• Retirement/401k and Company Contribution plan
• Life insurance
• Commuter benefit
• Short & long term disability
• Fitness reimbursement
• FSA
• Tuition reimbursement
• Back-up daycare, tutoring & family support benefits
• EAP/Work-Life assistance
• Holiday contribution program

Pay

The base salary range for this role is $90,000-$140,000. Compensation may vary outside of this range depending on a number of factors, including a candidate’s education, experience, skills, and geographic location.