Back End Developer

Join our team at Core One! Our mission is to be at the forefront of devising analytical, operational and technical solutions to our Nation's most complex national security challenges. In order to achieve our mission, Core One values people first! We are committed to recruiting, nurturing, and retaining top talent! We offer a competitive total compensation package that sets us apart from our competition. Core One is a team-oriented, dynamic, and growing company that values exceptional performance!

Back End Developer

Clearance Required: Active TS/SCI with Polygraph

Summary

We are looking for a skilled Back-End Developer to design and develop the infrastructure behind a new internal tool that will be used by non-technical users. You will build and maintain the systems that power internal platforms, developer tooling, and productivity-enhancing services across the organization. This position is ideal for someone who enjoys building robust back-end systems that simplify workflows, automate repetitive tasks, and empower technical and non-technical teams to move faster with confidence.

Key Responsibilities

• Design and implement robust, scalable back-end systems to support tools used by non-technical teams.


• Build secure, user-focused APIs and workflows that power front-end applications or no-code/low-code interfaces.


• Work closely with front-end developers, designers, and product managers to ensure the system delivers a seamless experience for non-technical users.


• Model and manage data storage, access, and permissions with a focus on simplicity and security.


• Create automation features such as scheduled jobs, reporting, data syncing, or task workflows.


• Implement validation, error handling, and logging with a focus on usability and supportability.


• Collaborate with stakeholders to iterate quickly based on real user feedback and usage patterns.


• Document internal APIs and system behavior for both technical and semi-technical audiences.

Required Qualifications

• Active TS/SCI with Polygraph


• Bachelor’s degree in Computer Science, Software Engineering, or related field.


• 5+ years of professional experience developing web-based applications


• Proficiency in at least one modern coding language. React JS, TypeScript, JavaScript, HTML5, CSS, OOJS, etc.


• Strong attention to detail and an eye for design.


• Experience building interfaces for complex data and workflows.


• Strong collaboration and communication skills to work closely with technical and non-technical stakeholders.

Desired Qualifications

• Familiarity with state management (Redux, MobX, Vuex, NgRx, etc).


• Experience with Git, Agile/Scrum, CI/CD pipelines.


• Experience working in Agile or DevOps environments.


• Hands-on experience with front-end frameworks such as React, Angular, or Vue.js.


• Familiarity with UI/UX design tools (Figma, Adobe XD, Sketch) and ability to translate designs into code.


• End to end workflow experience


• Experience working on Sponsor systems

Core One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender identity, sexual orientation, national origin, or protected veteran status and will not be discriminated against on the basis of disability.