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Senior Software Contractor Jobs (NOW HIRING)

DLS Engineering

Senior Software Engineer

Saint Louis, MO · On-site

$118K - $126K/yr

About DLS Engineering DLS is an engineering firm with 30 years of Federal Government contracting ... Senior Software Engineer at DLS Engineering (on-site) DLS Engineering is seeking a Senior Software ...

OASYS, INC.

Senior Software Engineer

Huntsville, AL · On-site

$114K - $150K/yr

Senior Software Engineer, Level 3 OASYS, INC., a Leading-Edge Government contractor, is seeking applicants for a Senior Software Engineer, Level 3 to support our customer in Huntsville, AL. Summary:

OASYS

Senior Software Engineer

Huntsville, AL · Hybrid

$114K - $150K/yr

Senior Software Engineer, Level 3 OASYS, INC., a Leading-Edge Government contractor, is seeking applicants for a Senior Software Engineer, Level 3 to support our customer in Huntsville, AL. Summary:

Oasys

Senior Software Engineer

Huntsville, AL · Hybrid

$116K - $154K/yr

Senior Software Engineer, Level 3 OASYS, INC., a Leading-Edge Government contractor, is seeking applicants for a Senior Software Engineer, Level 3 to support our customer in Huntsville, AL. Summary:

OASYS, INC.

Senior Software Engineer

Littleton, CO · On-site

$120K - $150K/yr

Senior Software Engineer, Level 3 OASYS, INC., a Leading-Edge Government contractor, is seeking applicants for a Senior Software Engineer, Level 3 to support our customer in Littleton, CO. Summary:

OASYS

Senior Software Engineer

Littleton, CO · Hybrid

$120K - $158K/yr

Senior Software Engineer, Level 3 OASYS, INC., a Leading-Edge Government contractor, is seeking applicants for a Senior Software Engineer, Level 3 to support our customer in Littleton, CO. Summary:

OASYS, INC.

Senior Software Engineer

Huntsville, AL · On-site

$114K - $150K/yr

Senior Software Engineer, Level 3 OASYS, INC., a Leading-Edge Government contractor, is seeking applicants for a Senior Software Engineer, Level 3 to support our customer in Huntsville, AL. Summary:

OASYS, INC.

Senior Software Engineer

Littleton, CO · On-site

$120K - $150K/yr

Senior Software Engineer, Level 3 OASYS, INC., a Leading-Edge Government contractor, is seeking applicants for a Senior Software Engineer, Level 3 to support our customer in Littleton, CO. Summary:

KBR

Senior Software Systems Engineer

El Segundo, CA · On-site

You will interface and collaborate with SE&I team members, contractors, government civilians and ... The Senior Software Systems Engineer provides systems engineering and integration leadership to the ...

SAIC

Senior Software Engineer

Patuxent River, MD

$80K - $120K/yr

The Senior Software Engineer will work as part of the PMA-275 government Software integrated ... Review contractor technical submissions. * Provide technical inputs on schedules, integration, and ...

Applied Research Solutions

Senior Software Developer

Heath, OH · On-site

$50 - $66.25/hr

ARS is looking for a Senior Software Developer to support the Combat Readiness Directorate in Heath ... This contractor and subcontractor shall abide by the requirements of 41 CFR 60-741.5(a). This ...

Conga

Senior Software Engineer

Boston, MA · On-site

$133K - $175K/yr

... quoting, contracting, rebates, and communications so teams stay in sync and buyers keep moving ... Senior Software Engineer Reports to: Sr. Manager, Software Engineering Location: Houston, TX; ...

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How much do senior software contractor jobs pay per year?

As of Jun 9, 2026, the average yearly pay for senior software contractor in the United States is $127,122.00, according to ZipRecruiter salary data. Most workers in this role earn between $101,500.00 and $149,000.00 per year, depending on experience, location, and employer.
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Senior Software Contractor jobs near you
Senior Software Engineer

Senior Software Engineer

DLS Engineering

Saint Louis, MO • On-site

$118K - $126K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 4 days ago

Job description

About DLS Engineering
DLS is an engineering firm with 30 years of Federal Government contracting experience. Our small business efficiencies coupled with a commitment to excellence allow us to provide reliable solutions with integrity for our nation's most critical defense and national security priorities.
Senior Software Engineer at DLS Engineering (on-site)
DLS Engineering is seeking a Senior Software Engineer for a full-time position supporting a geospatial customer in St. Louis, Missouri. This is an on-site position.
This role requires strong full-stack Python experience, with a focus on API development, Kubernetes deployment, and modern DevOps practices to accelerate delivery. The Senior Software Engineer will work with an existing code base learning it quickly, manipulating it for adjacent use cases, and implementing new features that advance mission capabilities. A background in geospatial systems, imagery acquisition, and geometry is a significant plus.
Why this role is a great next step for your career:
This position supports an exciting modernization initiative providing enterprise architectural, engineering, operations and sustainment, modification, and testing of geospatial-intelligence core services. This utilizes secure cloud environments, and a modern agile development methodology making data accessible, discoverable, and deliverable.
St. Louis offers a low cost of living, vibrant cultural scene, and abundance of free attractions and outdoor spaces. It offers a mix of big-city amenities and smaller-town charm, with unique neighborhoods, diverse food options, professional sports teams, and a growing technology sector.
A day in the life:
  • Create, maintain and/or improve the software code, with duties to design and update software databases
  • Technical delivery across many areas of software development including: assessments and evaluations, designing and engineering, agile development, Continuous Integration (CI)/Continuous Delivery (CD)/pipeline configuration and utilization, application development, front end development, server side development, API development, testing, security and accreditation, system integration, operations and sustainment, and documentation/template development and maintenance.

When I read the below it sounds like me:
Required Security Clearance: Top Secret/SCI
Required: United States Citizenship
Required Knowledge:
  • Possesses senior knowledge and senior hands-on experience in developing, implementing and leading software programs.
  • Astute ability in writing test scripts, and test-driven development in an agile software development environment, where built-in automated test procedures are paramount and continuous integration of software and continuous delivery of software to the Government is the culture.

Required Education:
  • Master's degree in Computer Science, Engineering, Mathematics, or a related technical field with 8+ years of software engineering experience
  • OR Bachelor's degree in a similar field with 10+ years of software engineering experience.
  • OR 12+ years of software engineering experience

Required Experience
  • Full-stack Python development
  • Building and maintaining APIs (ex. FastAPI)
  • Kubernetes and DevOps practices to support rapid deployment and sustainment
  • Proven ability to work with pre-existing code bases, understand them quickly, and adapt functionality for new use cases.
  • Web services architecture, design, and development.
  • Working in secure cloud environments (e.g., AWS GovCloud, C2S)

Other information:
  • We offer a competitive salary and a 401k program with company match.
  • We offer a comprehensive benefits package including health, vision, dental, life, and disability insurance.
  • We offer a generous paid time off package
  • If accommodation is needed with the application and / or the interview process for applicants with disabilities, please contact Human Resources at 757-494-5151.
  • DLS is an E-Verify company.
  • DLS is an equal employment opportunity employer. Qualified applicants will receive consideration without regard to age, race, religion, sex (pregnancy, sexual orientation, gender identity), national origin, or disability. We encourage all qualified applicants to apply. If you believe you have been discriminated against, please contact Barbara Ellison. You also have the right to file a charge of discrimination with the equal employment opportunity commission.
  • Must be able pass a government background check, which will be completed before employment.

The pay range for this role is:
118,000 - 126,000 USD per year (St. Louis, MO)

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