# Software Developer L1-6 at Core One

> United States · Unspecified · Software engineering · open. Source: https://alderhq.app/jobs/greenhouse%3Acoreone%3A6603161002 (read 2026-11-09).

## Facts (observed)

- Company: [Core One](https://alderhq.app/companies/core-one)
- Location text: Tysons Corner, VA; Sterling, VA
- Where it can be done from (inferred): United States (evidence: "Location: Tysons Corner, VA; Sterling, VA")
- Posted: 2023-02-06 (1371 days ago)
- First seen by alder: 2026-11-04 · last verified: 2026-11-07
- Reposted: 0 times · edited: 0 times
- Apply on the employer's site: https://job-boards.greenhouse.io/coreone/jobs/6603161002
- Skills listed (inferred): TypeScript

## Pay and sponsorship

- Posted pay: $110k–$215k per year (from the description)
- Market band for similar posted roles (Washington DC, n 226): p25 $119k, median $140k, p75 $170k

## Description (the employer's text)

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!

Core One is seeking Software Developers L1-6 to support our IC program. This position requires a TS/SCI w/ Poly clearance

### Roles & Responsibilities

- Provide development engineering and programming support to projects and infrastructure support activities
- Design and develop enterprise applications in a Web environment
- Develop, create, and modifies general computer applications software or specialized utility programs.
- Analyze user needs and develops software solutions
- Design software or customizes software for client use with the aim of optimizing operational efficiency
- Analyze and design databases within an application area, working individually or coordinating database development as part of a team
- Manage websites including design, develop, deploy and maintain activities as well as performs testing and quality assurance of web sites and web applications
### Requirements

- Active TS/SCI w/ Poly Clearance
- An Associate’s degree in Computer Science, Information Systems, Engineering, Business, or a scientific or technical discipline related to the specific skill will be considered equivalent to eighteen (18) months specialized experience
- A Bachelor’s degree in Computer Science, Information Systems, Engineering, Business or a scientific or technical discipline related to the specific skill will be considered equivalent to three (3) years specialized experience (total equivalency is not cumulative when combined with an Associate’s degree)
- A Master’s degree in Computer Science, Information Systems, Engineering, Business, or a scientific or technical discipline related to the specific skill will be considered equivalent to two (2) years specialized experience (up to a total of five (5) years when combined with a Bachelor’s)
- A Doctorate in Computer Science, Information Systems, Engineering, Business, or a scientific or technical discipline related to the specific skill will be considered equivalent to two (2) years specialized experience (up to a total of seven (7) years when combined with a Master’s and a Bachelor’s).
- Professional years of experience may be substituted for specialized years of experience at a ratio of three (3) years of general experience within an occupation for one (1) year of specialized experience
- Relevant certifications will be considered equivalent to three (3) months of specialized experience
### Levels

- Developmental: \<3 YOE
- Full Performance: 3 YOE
- Senior: 6 YOE
- Expert: 11 YOE
- Manager: 16 YOE
- SME: 16 YOE
### Salary Range: $110,000 - $215,000; dependent on level

The pay range reflected above is a general guideline for this position and labor category and is not a guarantee of a specific salary or offer. Final compensation is determined based on factors including, but not limited to, relevant experience, education, certifications, security clearance level, contract requirements, geographic location, and internal pay equity, and may reflect market data specific to the awarded contract.

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.

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Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/greenhouse%3Acoreone%3A6603161002 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.