ZipRecruiter

Log In

1

Mid Level Software Engineer Jobs in St 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 supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

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 supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

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 supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

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 supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

Leidos

Mid-Level Software Engineer

Saint Louis, MO

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

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 supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

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 supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

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 supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

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 supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

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 supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

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 supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

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 supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

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 supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

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 supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

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 supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

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 supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

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 supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

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 supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

Leidos

Mid-Level Software Engineer

East Saint Louis, 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 supporting an Intelligence Community customer. In this role, you'll design, develop, and deliver modern ...

next page

Showing results 1-20

All JobsMid Level Software Engineer JobsMid Level Software Engineer Jobs in St. Louis, MO

Mid Level Software Engineer information

See St Louis, MO salary details

$61.7K

$143.4K

$199.8K

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

As of Aug 18, 2026, the average yearly pay for mid level software engineer in St. Louis, MO is $143,426.00, according to ZipRecruiter salary data. Most workers in this role earn between $116,700.00 and $168,200.00 per year, depending on experience, location, and employer.

What is a mid level software engineer?

A Mid Level Software Engineer is a professional with a few years of experience who develops, tests, and maintains software applications. They work independently on tasks, contribute to code reviews, and collaborate with teams to design and implement solutions. Mid-level engineers are expected to write clean, efficient code, troubleshoot issues, and improve system performance. They may also mentor junior developers and participate in architectural discussions. Typically, they have strong problem-solving skills and proficiency in programming languages relevant to their role.

What typical responsibilities can I expect as a mid level software engineer?

As a Mid Level Software Engineer, you will be involved in designing, coding, testing, and maintaining software applications, often working on both new and existing projects. You’ll collaborate with other engineers, product managers, and QA teams to deliver features that meet business requirements, while also participating in code reviews and contributing to architectural decisions. Your responsibilities may also include troubleshooting bugs, refining development processes, and occasionally mentoring junior engineers. This role typically offers a blend of technical challenge, teamwork, and opportunities for continued skill development.

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

To thrive as a Mid Level Software Engineer, you need a solid understanding of software development principles, programming languages such as Java, Python, or C#, and a bachelor’s degree in computer science or a related field. Experience with version control systems like Git, familiarity with agile methodologies, and sometimes certifications such as AWS Certified Developer or Microsoft Certified: Azure Developer Associate are advantageous. Strong problem-solving skills, teamwork, and effective communication are standout soft skills in this position. These combined skills enable engineers to deliver high-quality code, collaborate efficiently within development teams, and adapt to evolving project requirements.

Is 25 too late to become a mid level software engineer?

Age is not a strict barrier to becoming a mid level software engineer; many professionals transition into software development in their mid-20s or later. Success depends on acquiring relevant skills, such as programming languages and experience with development tools, through self-study, coding bootcamps, or formal education. Employers value skills and experience over age, so with dedication, starting at 25 is entirely feasible.

What does a mid level software engineer earn?

A mid-level software engineer typically earns between $80,000 and $120,000 annually, depending on location, industry, and experience. They often have 2-5 years of experience and may work with programming languages like Java, Python, or C++, using tools such as Git and Agile methodologies.

What are the most commonly searched types of Software Engineer jobs in St. Louis, MO?

The most popular types of Software Engineer jobs in St. Louis, MO are:

What are popular job titles related to Mid Level Software Engineer jobs in St. Louis, MO?

For Mid Level Software Engineer jobs in St. Louis, MO, the most frequently searched job titles are:

What job categories do people searching Mid Level Software Engineer jobs in St. Louis, MO look for?

The top searched job categories for Mid Level Software Engineer jobs in St. Louis, MO are:

What cities near St. Louis, MO are hiring for Mid Level Software Engineer jobs?

Cities near St. Louis, MO with the most Mid Level Software Engineer job openings:

Mid Level Software Engineer jobs near you
Infographic showing various Mid Level Software Engineer job openings in St. Louis, MO as of August 2026, with employment types broken down into 80% Full Time, and 20% Contract. Highlights an 100% In-person job distribution, with an average salary of $143,426 per year, or $69 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 12 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)

Apply