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Assistant Software Engineer Jobs in St Louis, MO

The Boeing Company is currently seeking a Software Engineer-DevSecOps to support our Air ... Assists with establishing and maintaining development and production environments * Assist with ...

Junior Software Engineer

Saint Louis, MO · On-site

$69K - $141K/yr

Engineering Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph ... Apply secure coding practices and support security-focused software development processes. Assist ...

Software Engineer III

Saint Louis, MO · On-site

$140K - $145K/yr

Software Engineer III Location: St. Louis, MO Clearance: Secret Required Certification: CompTIA ... These tools assist our recruitment team but do not replace human judgment. Final hiring decisions ...

Software Engineer III

Saint Louis, MO · On-site

$140K - $145K/yr

Software Engineer III Location: St. Louis, MO Clearance: Secret Required Certification: CompTIA ... These tools assist our recruitment team but do not replace human judgment. Final hiring decisions ...

Senior Software Engineer

O Fallon, MO · On-site

$115 - $184/hr

Senior Software Engineer Overview The MDES team is looking for a Senior Software Development ... Develop enterprise applications with quality, on schedule, and within effort estimates. * Assist ...

Principal Software Engineer

O Fallon, MO · On-site

$126K - $169K/yr

Title and Summary Principal Software Engineer Who is Mastercard? Mastercard is a global technology ... assistants, agents, and multi-agent workflows that solve real problems inside Services programs ...

Principal Software Engineer

O Fallon, MO

$126K - $169K/yr

... assistants, agents, and multi-agent workflows that solve real problems inside Services programs ... Extensive hands-on software engineering experience with a track record of personal shipping complex ...

Software Engineer III Location: St. Louis, MO Clearance: Secret Required Certification: CompTIA ... These tools assist our recruitment team but do not replace human judgment. Final hiring decisions ...

Showing results 21-40

Assistant Software Engineer information

See St Louis, MO salary details

$32.1K

$86.3K

$130.8K

How much do assistant software engineer jobs pay per year?

As of Sep 3, 2026, the average yearly pay for assistant software engineer in St. Louis, MO is $86,289.00, according to ZipRecruiter salary data. Most workers in this role earn between $68,500.00 and $101,600.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as an assistant software engineer?

To thrive as an Assistant Software Engineer, you need a solid understanding of programming languages (such as Java, Python, or C++), software development fundamentals, and typically a bachelor's degree in computer science or a related field. Familiarity with version control systems like Git, basic debugging tools, and common development frameworks is important. Strong problem-solving abilities, collaboration, and effective communication help you work efficiently within teams and adapt to evolving project requirements. These skills and qualities are essential for delivering quality code, learning quickly, and contributing to successful software projects.

What are some common challenges faced by assistant software engineers when joining a new development team?

Assistant Software Engineers often encounter challenges such as adapting to unfamiliar codebases, learning new technologies or frameworks used by the team, and understanding the team's workflow and communication practices. It's common to spend initial weeks focusing on onboarding tasks, shadowing experienced developers, and gradually taking on more complex assignments. Collaboration with senior engineers is key, as they provide guidance and feedback to help you grow technically and integrate smoothly into the team's processes.

What is the difference between Assistant Software Engineer vs Software Engineer?

AspectAssistant Software EngineerSoftware Engineer
Required CredentialsBachelor's degree in CS or related field; some internshipsBachelor's or higher; more experience preferred
Work EnvironmentEntry-level, supervised tasks, learning-focusedFull responsibility for projects, independent problem-solving
Employer & Industry UsageCommon in tech companies, startups, IT departmentsStandard role across tech, finance, healthcare, and more

The main difference is experience and responsibility. Assistant Software Engineers are entry-level, focusing on learning and supporting tasks, while Software Engineers handle full project development independently. The roles often overlap in credentials and work environment, but the Software Engineer position involves greater autonomy and technical expertise.

Is 25 too late to become an assistant software engineer?

Age is not a barrier to becoming an assistant software engineer; many professionals start or transition into tech careers at 25 or later. Success depends on acquiring relevant skills such as programming languages, understanding software development processes, and gaining practical experience through projects or certifications.

What is an assistant software engineer?

An assistant software engineer is an entry-level or junior role responsible for supporting software development tasks such as coding, testing, and debugging under the supervision of senior engineers. They often work with programming languages like Java, Python, or C++ and may need foundational knowledge of software development tools and 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 cities near St. Louis, MO are hiring for Assistant Software Engineer jobs?

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

Infographic showing various Assistant Software Engineer job openings in St. Louis, MO as of August 2026, with employment types broken down into 84% Full Time, 13% Part Time, and 3% Contract. Highlights an 88% Physical, 3% Hybrid, and 9% Remote job distribution, with an average salary of $86,289 per year, or $41.5 per hour.

Embedded Software Engineer Intern

Leonardo DRS

Bridgeton, MO • On-site

$41K - $53K/yr

Full-time, Internship

Medical, Dental, Vision, Life, Retirement, PTO

Posted 28 days ago


Leonardo DRS rating

8.1

Company rating: 8.1 out of 10

Based on 56 frontline employees who took The Breakroom Quiz

116th of 545 rated manufacturers


Job description

Job ID: 115031
The Leonardo DRS Land Systems business is a recognized leader in the design and integration of complex technologies into new and legacy systems and platforms for global military and commercial customers. We are a 6 year running Top Workplace in the Greater St. Louis area.
Job Summary
Leonardo DRS Land Systems is seeking an Embedded Software Engineer Intern for Summer 2026 to help our Software Engineering (SW) team meet the technical performance requirements on complex system development programs. This position will be working on a variety of programs and writing (C,C++,C#, Java and Python) software that runs on the hardware we develop. The position will also execute an interdisciplinary process to ensure that the customer and stakeholder needs and requirements are satisfied in a high quality, trustworthy, cost efficient, and schedule compliant manner. The purpose of the internship is to provide meaningful professional hands-on experience to students with proven academic performance and leadership potential. Students will also get to utilize our companies flexible work schedule.
Job Responsibilities
  • Work under the direction of the Software Engineering Manager, Software Engineering Technical Director, and Lead Software Engineers on various Software Engineering activities
  • May code using C/C++/C#/Java to complete coding assignments
  • Source code management of new and/or modified code
  • May use MATLAB and/or Simulink software in the performance of assignments
  • Work closely with and assist engineers in the conduct of various engineering assignments
  • Carry out basic work instructions that will help in understanding the fundamentals of the Company and also learn new things
  • Conduct limited scope testing under the supervision of engineers
  • Complete assigned tasks on time
  • Gather and assemble data for engineers
  • May be required to help in research in a particular field
  • Conduct design analysis and/or calculations under the supervision of engineers
  • Assist engineers with appropriate design details
  • Must have good interpersonal skills and have the ability to build a good network
  • Perform a wide variety of tasks to gain familiarity with the engineering staff, methods, programs and practices
  • Support, communicate, reinforce and defend the mission, values and culture of the organization
  • Other duties as assigned

Qualifications
  • High School Diploma or GED, and currently a Junior or above in a Bachelor's program in Computer Science, Computer Engineering, Mathematics, Physics, or equivalent
  • Must have good interpersonal skills
  • Excellent analytical and communication skills, written and oral

Desired Knowledge:
  • Basic knowledge and familiarity with: C, C++, C#, Java, Python, git
  • Knowledge of Windows, Linux, or a real time operating system
  • Proficient use of Microsoft Office products

The salary range for this position is $41,011.00/year- $53,315.00/year for the state of Illinois. This range reflects the good faith estimate of pay the employer is willing to offer at the time of posting. Several factors can influence the pay scale, including but not limited to: Federal contract labor categories and contract wage rates, collective bargaining agreements, geographic location, business considerations, scope, and responsibilities of the position, local or other applicable market conditions, and internal equity. Other factors include the candidate's qualifications such as prior work experience, specific skills and competencies, education/training, and certifications. In addition to base pay, employees may be eligible for: annual performance-based bonuses, equity awards, and overtime pay (for non-exempt employees as applicable. Our benefits package includes comprehensive health insurance (medical, dental, vision), employer matching 401(k) retirement plan, paid time off including vacation, holidays, and sick leave (including ant state-mandated paid sick leave), parental leave benefits, tuition reimbursement, professional development support, and life and disability insurance coverage.
Taking care of our people is a top priority at Leonardo DRS. We are proud to offer competitive salaries and comprehensive benefits, including medical, dental, and vision coverage, a company contribution to a health savings account, telemedicine, life and disability insurance, legal insurance, and a 401(k) savings plan. We champion wellness programs that focus on physical, emotional, and financial well-being. We develop our talent by offering programs and activities to support career-growth, professional development, and skill enhancement. And we understand there is more to life than work, and the importance of offering flexible work schedules with our 9/80 program, competitive vacation, health/emergency leave, paid parental leave, and community service hours.
*Some employees are eligible for limited benefits only
Leonardo DRS, Inc. and its subsidiaries provide equal opportunities to all employees and applicants for employment and prohibit discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. #LSY
Our Vision. To be the leading mid-tier defense technology company in the U.S.
Our Values. The Leonardo DRS culture is defined by our Core Values and Principles:
- Integrity
- Agility
- Excellence
- Customer Focus
- Community & Respect
- Innovation
We strive to uphold them in all aspects of our business practices to inspire our employees and provide outstanding support for our customers.

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About Leonardo DRS

Sourced by ZipRecruiter

Industry

Navigational, measuring, electromedical, and control instruments manufacturing and communications equipment manufacturing

Company size

5,001 - 10,000 Employees

Headquarters location

Arlington, VA, US

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