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Assistant Software Engineer Jobs in St Louis, MO

Amyx, Inc.

Software Engineering Lead

O Fallon, IL · On-site +1

Software development support: configure/operate/maintain program support tools; assist software ... engineering issues; support interoperability certification/assessment processes. * Agile ...

Amyx, Inc.

Software Engineering Lead

O Fallon, IL · On-site

Software development support: configure/operate/maintain program support tools; assist software ... engineering issues; support interoperability certification/assessment processes. * Agile ...

MasterCard

Software Engineer II

O Fallon, MO

Title and Summary Software Engineer II Overview Who is Mastercard? Mastercard is a global ... Assist with production support by troubleshooting complex issues, identifying root causes, and ...

Know Ink, LLC

Software Engineer III

Saint Louis, MO · On-site

Net developer to build software using languages and technologies of the .NET framework. You will ... Able to assist and mentor junior level .NET developers Experience: * 3-6 years experience in .NET ...

Mastercard, Inc.

Software Engineer II

O Fallon, MO · On-site

$91K - $124K/yr

... Assist with production support by troubleshooting complex issues, identifying root causes, and ... programming, software design principles, and commonly used design patterns. • Experience ...

Mastercard

Software Engineer II

O Fallon, MO · On-site

$91K - $124K/yr

... Assist with production support by troubleshooting complex issues, identifying root causes, and ... programming, software design principles, and commonly used design patterns. • Experience ...

Mastercard

Software Engineer II

O Fallon, MO · On-site

$91K - $124K/yr

... Assist with production support by troubleshooting complex issues, identifying root causes, and ... programming, software design principles, and commonly used design patterns. • Experience ...

ITW Avery Weigh-Tronix

Embedded Software Engineer

MO

$123K - $162K/yr

The engineer will contribute to software architecture, product enhancements, and reliability ... Assist in the development of software user manuals and technical documentation. • Collaborate ...

MasterCard

Software Engineer I

O Fallon, MO · On-site

Title and Summary Software Engineer I AI and Decision Product Enablement Be part of the Shared ... quality. Assist in identifying and resolving technical issues, performance concerns, and ...

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All JobsSoftware Engineer JobsAssistant Software Engineer JobsAssistant Software Engineer Jobs in St. Louis, MO

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 Aug 29, 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 are popular job titles related to Assistant Software Engineer jobs in St. Louis, MO?

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

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

The top searched job categories for Assistant 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:

Assistant Software Engineer jobs near you
Infographic showing various Assistant Software Engineer job openings in St. Louis, MO as of August 2026, with employment types broken down into 85% Full Time, 10% Part Time, 1% Temporary, and 4% Contract. Highlights an 85% Physical, 4% Hybrid, and 11% Remote job distribution, with an average salary of $86,289 per year, or $41.5 per hour.

Software Engineering Lead

Amyx, Inc.

O Fallon, IL • On-site, Remote

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 14 days ago

Job description

Overview
Amyx is seeking a Software Engineering Lead to join our Dept. of Defense client at Scott Air Force Base in O'Fallon, IL.
Responsibilities
  • This position requires the ability to support software development and Agile delivery activities.
  • Supports Agile ceremonies, backlog management, and documentation.
  • Coordinates software development support and testing activities.
  • Assists with tool configuration and reporting
  • Software development support: configure/operate/maintain program support tools; assist software license management; analyze help desk tickets; support ad hoc reporting; research HW/SW solutions; support testing of upgrades; coordinate with orgs to address engineering issues; support interoperability certification/assessment processes.
  • Agile development management: support agile delivery processes; organize ceremonies and processes; manage backlogs; gather stakeholder feedback; update requirements tools/workflows; support test/validation/verification activities.
  • Must have the ability to communicate accurate information

Qualifications
Required:
  • Secret Clearance.

Desired:
  • Experience leading multi-team Agile execution (ceremonies, backlog health, stakeholder feedback loops).
  • Experience producing "technical artifacts" (position papers/specifications) consistent with task order expectation.
  • One of the following desertification: SAFe Agilist/SAFe Scrum Master, PMI-ACP

Benefits include:
  • Medical, Dental, and Vision Plans (PPO & HSA options available)
  • Flexible Spending Accounts (Health Care & Dependent Care FSA)
  • Health Savings Account (HSA)
  • 401(k) with matching contributions
  • Roth
  • Qualified Transportation Expense with matching contributions
  • Short Term Disability
  • Long Term Disability
  • Life and Accidental Death & Dismemberment
  • Basic & Voluntary Life Insurance
  • Wellness Program
  • PTO
  • 11 Holidays
  • Professional Development Reimbursement

Please contact talent@amyx.com with any questions!
Amyx is proud to be an Equal Opportunity Employer. All qualified candidates will be considered without regard to race, color, religion, national origin, age, disability, sexual orientation, gender identity, status as a protected veteran, or any other characteristic protected by law. Amyx is a VEVRAA federal contractor and we request priority referral of veterans.
Physical Demands
Employee needs to be able to sit at a workstation for extended periods; use hand(s) to handle or feel objects, tools, or controls; reach with hands and arms; talk and hear. Most positions require ability to work on desktop or laptop computer for extended periods of time reading, reviewing/analyzing information, and providing recommendations, summaries and/or reports in written format. Must be able to effectively communicate with others verbally and in writing. Employee may be required to occasionally lift and/or move moderate amounts of weight, typically less than 20 pounds. Regular and predictable attendance is essential.

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