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Assistant Software Developer Jobs in Belleville, IL

Amyx, Inc.

Software Engineering Lead

O Fallon, IL · On-site

... 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 ...

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

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

The Timberline Group

Lead Software Developer

Saint Louis, MO · On-site +1

$112K - $141K/yr

The individual also participates in researching new technologies within the organization. Assist ... Software Engineering role. * 6+ years of programming experience in C# .NET. * Past experience ...

Eliassen Group

Senior Software Developer

Saint Louis, MO · On-site

$100 - $125/hr

Louis, MO Our client seeks a Senior Software Developer to support modernization and maintenance of ... These tools assist our hiring teams in different ways, including but not limited to, assistance in ...

New

SAIC

Web Software Developer

Scott Air Force Base, IL · On-site

$120K - $160K/yr

Software Subcategory: SW Engineer Schedule: Full-Time Shift: Day Job Travel: No Minimum Clearance ... Complete minor adjustments coordination with the content owner when required. * Assist the ...

SAIC

Web Software Developer

Scott Air Force Base, IL

$120K - $160K/yr

Software Subcategory: SW Engineer Schedule: Full-Time Shift: Day Job Travel: No Minimum Clearance ... Complete minor adjustments coordination with the content owner when required. * Assist the ...

Booz Allen Hamilton

Agentic AI Developer

O Fallon, IL · On-site

$99K - $225K/yr

Experience with software design patterns * Knowledge of embedding models, vector databases, and ... As part of this commitment, the use of artificial intelligence (AI) or other tools to assist with ...

Know Ink, LLC

Software Engineer III

Saint Louis, MO · On-site

NET Developer We are looking for a .Net developer to build software using languages and ... Able to assist and mentor junior level .NET developers Experience: * 3-6 years experience in .NET ...

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All JobsSoftware Developer JobsAssistant Software Developer JobsAssistant Software Developer Jobs in Belleville, IL

Assistant Software Developer information

See Belleville, IL salary details

$28.7K

$97.4K

$234.6K

How much do assistant software developer jobs pay per year?

As of Aug 7, 2026, the average yearly pay for assistant software developer in Belleville, IL is $97,388.00, according to ZipRecruiter salary data. Most workers in this role earn between $61,700.00 and $103,000.00 per year, depending on experience, location, and employer.

What is the difference between Assistant Software Developer vs Junior Software Developer?

AspectAssistant Software DeveloperJunior Software Developer
Required CredentialsTypically an associate degree or relevant certificationsUsually an associate degree or entry-level certifications
Work EnvironmentSupportive team, learning-focused, entry-level projectsHands-on coding, developing features, debugging
Employer & Industry UsageCommon in tech companies, startups, and IT departmentsWidely used across software firms, tech startups, and IT services

The main difference is that Assistant Software Developers often focus on supporting tasks and learning, while Junior Software Developers are more involved in actual coding and project work. Both roles are entry-level, but Junior Developers typically have more hands-on responsibilities and experience.

What are the key skills and qualifications needed to thrive as an assistant software developer, and why are they important?

To thrive as an Assistant Software Developer, you need a solid understanding of programming languages (such as Java, Python, or C#), basic software development principles, and often a degree in computer science or a related field. Familiarity with version control systems like Git, integrated development environments (IDEs), and common frameworks or libraries is typically required. Strong problem-solving abilities, teamwork skills, and attention to detail help individuals excel in collaborative and fast-paced development environments. These skills and qualities are vital for producing high-quality code, supporting project goals, and contributing effectively to software development teams.

What is an assistant software developer?

An Assistant Software Developer is an entry-level professional who supports software development teams by assisting in coding, testing, debugging, and maintaining software applications. They typically work under the guidance of more experienced developers, helping to implement features, fix bugs, and learn best practices in software engineering. This role is ideal for recent graduates or those new to the field, providing valuable hands-on experience and an opportunity to build technical skills. Over time, Assistant Software Developers may advance to more senior roles as they gain experience and expertise.

What are some common challenges faced by assistant software developers when working on team projects?

Assistant Software Developers often encounter challenges such as understanding existing codebases, managing time effectively while balancing multiple tasks, and keeping up with rapidly changing project requirements. Collaboration is key, as you'll frequently work alongside senior developers, testers, and project managers, which requires clear communication and openness to feedback. Embracing these challenges helps build problem-solving skills and sets the stage for future career growth within the development team.
What are the most commonly searched types of Software Developer jobs in Belleville, IL? The most popular types of Software Developer jobs in Belleville, IL are:
What are popular job titles related to Assistant Software Developer jobs in Belleville, IL? For Assistant Software Developer jobs in Belleville, IL, the most frequently searched job titles are:
What job categories do people searching Assistant Software Developer jobs in Belleville, IL look for? The top searched job categories for Assistant Software Developer jobs in Belleville, IL are:
What cities near Belleville, IL are hiring for Assistant Software Developer jobs? Cities near Belleville, IL with the most Assistant Software Developer job openings:
Assistant Software Developer jobs near you
Infographic showing various Assistant Software Developer job openings in Belleville, IL as of August 2026, with employment types broken down into 87% Full Time, 8% Part Time, 3% Contract, and 2% Nights. Highlights an 88% Physical, 3% Hybrid, and 9% Remote job distribution, with an average salary of $97,388 per year, or $46.8 per hour.

Software Engineering Lead

Amyx, Inc.

O Fallon, IL • On-site

Full-time

Re-posted 4 days ago

Job description

Job Summary:
Amyx, Inc. is seeking a Software Engineering Lead to join their Dept. of Defense client at Scott Air Force Base in O'Fallon, IL. The role focuses on supporting software development and Agile delivery activities, coordinating testing activities, and managing Agile processes.
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.
• 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.
Preferred:
• 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 certification SAFe Agilist/SAFe Scrum Master, PMI-ACP.
Company:
At Amyx, Inc., a wholly owned subsidiary of Tetra Tech, our mission is to exceed our customer's expectations on every contract, to provide an environment that encourages, recognizes and rewards the extraordinary contributions of our employees, and to advance and support the communities in which we work and live. Founded in 1999, the company is headquartered in Reston, USA, with a team of 501-1000 employees. The company is currently Late Stage.

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