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Mid Level Software Developer Jobs in Saint Louis, MO

DLS Engineering

Mid-level Software Engineer

Saint Louis, MO · On-site

$100K - $105K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Mid-level Software Engineer at DLS Engineering (on-site) DLS Engineering is seeking a Mid-level Software Engineer for a full-time position supporting a geospatial customer in St. Louis, Missouri.

Leidos

Mid-Level Software Engineer

Fenton, MO · On-site

$87K - $157K/yr

  • Medical

  • Retirement

  • PTO

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos

Mid-Level Software Engineer

Maryville, IL · On-site

$87K - $157K/yr

  • Medical

  • Retirement

  • PTO

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos

Mid-Level Software Engineer

Saint Louis, MO · On-site

$87K - $157K/yr

  • Medical

  • Retirement

  • PTO

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos

Mid-Level Software Engineer

Saint Louis, MO · On-site

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos

Mid-Level Software Engineer

Hartford, IL · On-site

$87K - $157K/yr

  • Medical

  • Retirement

  • PTO

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos

Mid-Level Software Engineer

Saint Louis, MO · On-site

$87K - $157K/yr

  • Medical

  • Retirement

  • PTO

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos

Mid-Level Software Engineer

Belleville, IL · On-site

$87K - $157K/yr

  • Medical

  • Retirement

  • PTO

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos

Mid-Level Software Engineer

Glen Carbon, IL · On-site

$87K - $157K/yr

  • Medical

  • Retirement

  • PTO

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos

Mid-Level Software Engineer

Valley Park, MO · On-site

$87K - $157K/yr

  • Medical

  • Retirement

  • PTO

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos

Mid-Level Software Engineer

Hazelwood, MO · On-site

$87K - $157K/yr

  • Medical

  • Retirement

  • PTO

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos

Mid-Level Software Engineer

Caseyville, IL · On-site

$87K - $157K/yr

  • Medical

  • Retirement

  • PTO

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos

Mid-Level Software Engineer

Saint Charles, MO · On-site

$87K - $157K/yr

  • Medical

  • Retirement

  • PTO

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos

Mid-Level Software Engineer

Columbia, IL · On-site

$87K - $157K/yr

  • Medical

  • Retirement

  • PTO

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Via Logic LLC

Mid-Level Software Engineer

Saint Louis, MO · On-site

$90 - $130/hr

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. Commitment ...

New

Leidos

Mid-Level Software Engineer

Ballwin, MO · On-site

$87K - $157K/yr

  • Medical

  • Retirement

  • PTO

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos

Mid-Level Software Engineer

Dupo, IL · On-site

$87K - $157K/yr

  • Medical

  • Retirement

  • PTO

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos

Mid-Level Software Engineer

Saint Ann, MO · On-site

$87K - $157K/yr

  • Medical

  • Retirement

  • PTO

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos

Mid-Level Software Engineer

Florissant, MO · On-site

$87K - $157K/yr

  • Medical

  • Retirement

  • PTO

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos

Mid-Level Software Engineer

Wood River, IL · On-site

$87K - $157K/yr

  • Medical

  • Retirement

  • PTO

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

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Showing results 1-20

All JobsMid Level Software Developer JobsMid Level Software Developer Jobs in Saint Louis, MO

Mid Level Software Developer information

See Saint Louis, MO salary details

$46.7K

$108.7K

$161.4K

How much do mid level software developer jobs pay per year?

As of Aug 13, 2026, the average yearly pay for mid level software developer in Saint Louis, MO is $108,739.00, according to ZipRecruiter salary data. Most workers in this role earn between $87,500.00 and $126,400.00 per year, depending on experience, location, and employer.

What are the typical daily responsibilities of a mid level software developer?

As a Mid Level Software Developer, your daily responsibilities often include writing and reviewing code, participating in code reviews, collaborating with colleagues on project requirements, and troubleshooting bugs or technical issues. You may also be involved in designing features, writing unit tests, and participating in regular stand-up meetings as part of an agile team. Additionally, you'll interact with product managers, QA engineers, and other team members to ensure the software meets project deadlines and quality standards. This role offers the chance to take on increasing ownership of projects while continuing to learn and grow professionally.

What are the key skills and qualifications needed to thrive in the mid level software developer position, and why are they important?

To thrive as a Mid Level Software Developer, you should have solid programming skills in languages like Java, Python, or JavaScript, along with a relevant bachelor's degree or equivalent experience. Familiarity with version control systems such as Git, frameworks like React or Spring, and knowledge of agile development practices are typically required. Effective problem-solving, clear communication, and a collaborative mindset are valuable soft skills in this position. These skills enable you to build reliable software, contribute to team projects, and adapt to evolving technical challenges.

What is a mid level software developer?

A Mid Level Software Developer is a professional with a few years of experience who contributes to designing, coding, testing, and maintaining software applications. They work independently on tasks but also collaborate with senior developers and teams to implement solutions. Their role often includes debugging code, optimizing performance, and ensuring best practices in development. Mid-level developers are expected to have a solid understanding of programming languages, frameworks, and software development life cycles. They may also mentor junior developers and participate in code reviews to maintain code quality.

What are the most commonly searched types of Software Developer jobs in Saint Louis, MO?

The most popular types of Software Developer jobs in Saint Louis, MO are:

What are popular job titles related to Mid Level Software Developer jobs in Saint Louis, MO?

For Mid Level Software Developer jobs in Saint Louis, MO, the most frequently searched job titles are:

What job categories do people searching Mid Level Software Developer jobs in Saint Louis, MO look for?

The top searched job categories for Mid Level Software Developer jobs in Saint Louis, MO are:

What cities near Saint Louis, MO are hiring for Mid Level Software Developer jobs?

Cities near Saint Louis, MO with the most Mid Level Software Developer job openings:

Mid Level Software Developer jobs near you
Infographic showing various Mid Level Software Developer job openings in Saint Louis, MO as of August 2026, with employment types broken down into 1% Internship, 70% Full Time, 26% Part Time, and 3% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $108,739 per year, or $52.3 per hour.

Mid-level Software Engineer

DLS Engineering

Saint Louis, MO • On-site

$100K - $105K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 7 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.
Mid-level Software Engineer at DLS Engineering (on-site)
DLS Engineering is seeking a Mid-level Software Engineer for a full-time position supporting a geospatial customer in St. Louis, Missouri. This is an on-site position.
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:
  • Creating, maintaining, and/or improving the performance of existing software code, with duties to write and update software code and databases under direction from the assigned Government Lead.

When I read the below it sounds like me:
Required Security Clearance: Top Secret/SCI
Required: United States Citizenship
Required Education/Experience:
  • A Master of Science or equivalent degree in Computer Science, Engineering, Mathematics, Information Systems, Cybersecurity, or equivalent technical degree and a minimum of 2 years of experience in full stack development to include Java, Web services, Database, and micro-service development software, engineering/development, or a related area that demonstrates the ability to successfully perform the duties associated with this work.
  • OR, a Bachelor of Science or equivalent degree in Computer Science, Engineering, Mathematics, Information Systems or equivalent technical degree and a minimum of 4 years of experience in full stack development to include Java, Web services, Database, and micro-service development software, or engineering/development.
  • OR, a minimum, as equivalent to education, of 6 years of experience in software engineering/development, or a related area that demonstrates the ability to successfully perform the duties associated with this work may be substituted for a technical degree.

Required technical skills:
  • Java, JavaScript, or Python enterprise application development from scratch
  • Micro-service architecture
  • Containerization
  • API development/experience with Fast API
  • Test Driven Development (TDD)
  • Continuous Integration/Continuous Delivery
  • Cloud Native Development: AWS, Azure, Google Cloud or similar Cloud Service providers

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:
100,000 - 105,000 USD per year (St. Louis, MO)

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