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# Application Developer Mid Foundational Services

- **Company:** CASTALIA SYSTEMS LLC
- **Location:** Washington, DC, United States
- **Experience:** Experienced
- **Salary:** $150,000.0 - $170,000.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), JavaScript (Programming Language), Artificial Intelligence, Systems Engineering, Software Debugging, Elasticsearch, JSON, PostgreSQL, MongoDB, Node.Js, OpenShift, Oracle (Applications), Redis, Microsoft SharePoint, Apache Solr, SQL Databases, TypeScript, Extensible Markup Language (XML), AngularJS, Gitlab-ci, NestJS, Network Server
- **Published:** September 22, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9184199/application-developer-mid-foundational-services

## About the Role

* Bachelor's degree from an accredited college or university
 * Minimum 4 years of experience related to the specific labor category; or a minimum of 8 years of experience related to the specific labor category if individual has a HS Diploma.
 * TypeScript, Angular, Node, NestJS, Express Servers, Jest, MongoDB, PostgreSQL, Redis, ElasticSearch, GitLab CI Pipelines, Docker, OpenShift.

 * Node.js with Typescript, SQL, PostgreSQL, Redis, ElasticSearch.

Preferred Qualifications

 * JSON, Java, Java Script, SharePoint, XML, VBAs, Oracle, MongoDB, Solr, SQL, Open AI, other AI technologies.
 * CI Poly.

Physical Requirements/Work Environment

 * Normal office environment.
 * Hybrid Support

## Description

Castalia Systems is seeking an Application Developer Mid (Foundational Services). The Application Developer Mid will serve on our Foundational Services team and provide training/support to the team with other mid level developers.

Roles and Responsibilities

A qualified candidate will perform the following duties and responsibilities, but are not limited to:

 * Responsible for classification rollup and NTK handling programmatically
 * Responsible for cross-domain transfer processes (high to low)
 * Review server logs and consoles to triage and debug onsite. This is foundational services role that services all EPD applications.


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