Cyber Software Engineer

United StatesUnited States·Herndonfull-timemid
Software EngineerSoftware Engineering
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Quick Summary

Overview

At Excelity, we're passionate about delivering innovative technology solutions that help businesses thrive. Whether you're looking to streamline your operations, improve efficiency,

Technical Tools
Software EngineerSoftware Engineering
At Excelity, we're passionate about delivering innovative technology solutions that help businesses thrive. Whether you're looking to streamline your operations, improve efficiency, or enhance customer engagement, our team of experienced professionals is here to help. So why wait? Visit excelity.io today to learn more about how we can help you achieve your goals and take your business to the next level.

Excelity is seeking a Cyber Software Engineer for a project responsible for building the next generation Mission Integration System for an exciting Government customer with a very critical mission. The candidate will work with the engineering team and customer to ensure successful development of high profile, complex, technical deliverables that are core to the continued success of our award-winning projects.

Required Clearance: TS/SCI w/ CI Poly

Description:
The selected candidate will work within a cross-functional Scrum team, and will perform software engineering and development activities, associated with supporting, maintaining, and enhancing software using an Agile DevSecOps model. The candidate should be comfortable working with containers and automated testing frameworks. The candidate should have experience with structured software development methodologies and modern software tools and techniques.

Required Qualifications:
  • A Bachelor’s degree with 9+ years of relevant experience; OR a Master’s degree with 7+ years of relevant experience; OR a PhD with 4+ years of relevant experience an additional 4 years of experience may be considered in lieu of a degree requirement
  • Strong Python development experience, especially with workflow orchestration
  • Elasticsearch/Open Search, PostgreSQL, MySQL experience
  • Experience with state machines, task queues (e.g., Celery), or workflow engines.
  • Understanding of RESTful APIs and data serialization (JSON, XML).
  • TS/SCI with ability to pass a poly
Preferred Skills:
  • Knowledge of API design best practices and data governance.
  • Experience using Node.js.
  • Familiarity with frameworks like Django, FastAPI, or Flask.
  • Security+ or equivalent certification and willingness to serve as a privileged user supporting deployed systems testing
Benefits:
  • Competitive salary
  • Flexible work schedule
  • 100% Health, Dental, Vision, and Life Insurance plans with Flexible Spending Account (FSA)
  • Long and Short-term disability coverage
  • Generous paid vacation and holiday time
  • Safe Harbor 401(k) Retirement Plan with 6% Employer matching contributions
  • Reimbursement for professional and training development
  • Company-paid memberships to professional organizations


Excelity is an Equal Opportunity Employer

Location & Eligibility

Where is the job
Herndon, United States
On-site at the office
Who can apply
US

About this job

Who can apply
United States
Posted
296 days ago
Employer
has 12 open jobs on Jobera.

Listing Details

Posted
January 20, 2026
First seen
November 5, 2026
Last seen
November 12, 2026

Posting Health

Days active
6
Repost count
0
Trust Level
20%
Scored at
November 12, 2026

Signal breakdown

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Cyber Software Engineer