Backend Software Engineer
Company: Set of X
Location: Annapolis Junction
Posted on: February 16, 2026
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Job Description:
Job Description Job Description WE ARE HIRING OWNERS Set of X is
led by industry veterans who see government contracting as a good
community with plenty of opportunity to go around. With a shared
desire to give back, grow the community, and do great work, the Set
of X team is building an elite group of engineers with a strong
sense of shared responsibility and ownership. Because who you work
with matters.
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You will act as a senior backend developer for a new system being
developed from the ground up to provide workflow automation,
modernization, oversight, and mission cognizance for mission
critical work roles. You will provide input into design,
development, and integration of a complex web-based application.
You will be working on a mixed skillset team consisting of
frontend, backend, and full stack developers as well as data
analysts and a UX designer in close collaboration with the mission
customer. Responsibilities: Work with a multi-disciplinary team to
gather, document, and implement customer requirements. Perform
backend development to support system features based on customer
requirements. Assist with database and data model design and
implementation. Assist with automation of development tasks and
implementation and maintenance of CI/CD workflows and development
best practices such as testing. Continually incorporate feedback
from system owners and end users. Required Skills: Experience with
Java microservice development using Spring Boot. Familiarity with
SQL and NoSQL databases (PostGres, MySQL, Elasticsearch, MongoDB,
etc.). Experience with automated testing and CI/CD workflows
(GitLab CI, Jenkins, etc.). Familiarity with Git. Familiarity with
Atlassian tools (Jira, Confluence). Experience with
containerization and container orchestration (Docker, Kubernetes,
Rancher) Desired Skills: Service containerization and deployment
with Docker/Kubernetes. Experience with production CNO capabilities
and operations. Management of database systems (MongoDB, SQL,
Elasticsearch, etc.). Education/Experience: 12 yrs., B.S. in a
technical discipline or 4 additional yrs. in place of B.S.
Clearance: TS/SCI clearance with polygraph is required. Total
Compensation Package We offer a comprehensive compensation package
designed to support your well-being and professional growth. Our
competitive base salary is complemented by an extensive benefits
program, including: Health, Dental, and Vision Insurance:
Comprehensive coverage to keep you and your family healthy. Life
and Disability Insurance: Peace of mind with financial protection
for you and your loved ones. 401(k) Plan: No personal investment
required to benefit from a generous employer contribution, allowing
you to maximize your take-home pay. Paid Time Off: Enjoy time away
from work to recharge. Technology Refresh: Upgrade your devices
regularly, or opt for a year-end bonus if you don’t need new tech.
Training and Professional Development: A $5,250 annual budget for
ongoing education, certifications, and professional memberships. Or
use this annual benefit to repay a student loan tax-free. For a
full overview of our benefits, please visit our benefits tab.
Additional Perks and Benefits Stock Plan: Become an equity owner
with a yearly stock grant—let's build the future together. Flex
Leave and Exchange Plan: Take up to 8 weeks off for a strong
work-life balance or sell back unused time for double the value!
Virtual Office Compensation: Monthly reimbursement for cell phone
and internet services. Fringe Benefit Mall: Choose from perks like
Uber rides, a beer of the month club, Amazon Prime, and Hello
Fresh—whatever suits you best! Profit-Sharing Cash Bonus: Share in
the company’s success with an end-of-year cash bonus. Referral
Bonus: Help us grow by bringing in top talent and earn a bonus for
each successful referral. Powered by JazzHR iQDrxyJokJ
Keywords: Set of X, Annandale , Backend Software Engineer, IT / Software / Systems , Annapolis Junction, Virginia
