Low-Code Application Developer

Clark Construction Group, LLC•McLean, VA

5d•$90,000 - $140,000•Onsite

About The Position

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.

Requirements

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

Nice To Haves

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

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.