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Assistant Software Developer Jobs in Belleville, IL

Booz Allen Hamilton, Inc.

Agentic AI Developer

O Fallon, IL · On-site +1

$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 ...

Booz Allen Hamilton, Inc.

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 ...

Booz Allen Hamilton

Agentic AI Developer

O Fallon, IL

$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 ...

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 ...

Deloitte

Mainframe Developer

Saint Louis, MO · Hybrid

$47.75 - $61.25/hr

Monitor daily batch jobs and resolve ABENDs within defined SLA timelines. * Assist in unit and ... software, data, AI, network, and hybrid cloud infrastructure. These solutions are powered by ...

Maritz Loyalty Marketing

Software Engineer I

Fenton, MO · On-site

The Software Engineer I supports the development of software that serves Maritz technology, working ... Developing triage skills, with the ability to assist in root cause analysis under guidance. * Basic ...

Maritz

Software Engineer I

Fenton, MO · On-site

The Software Engineer I supports the development of software that serves Maritz technology, working ... Developing triage skills, with the ability to assist in root cause analysis under guidance. * Basic ...

JS Consulting

R&D Engineer II-Software

Bridgeton, MO · On-site

$92K - $126K/yr

Build, test, and maintain database pipeline architectures. * Assist in software engineering efforts by establishing test data creation workflows. * Ensure compliance with data governance and security ...

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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 Jul 18, 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
Senior Software Engineer

Senior Software Engineer

Trinity Global Consulting

Saint Louis, MO

$119K - $157K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 7 days ago

Job description

Duties may include:

  • Determine operational feasibility by evaluating analysis, problem definition, requirements, solution development and proposed solutions.
  • Document and demonstrating solutions by developing documentation, flowcharts, layouts, diagrams, charts, code comments and clear code.
  • Develop software solutions by studying information needs; studying systems flow, data usage and work processes; investigating problem areas.
  • Tailor and deploy software tools, processes and metrics as needed.
  • Provide information by collecting, analyzing and summarizing development and service issues.
  • Automate tasks through appropriate tools and scripting.
  • Develop architectures that are inherently secure, robust, scalable, modular, and API-centric.
  • Provide software design recommendations to the program manager and Chief Software Engineer.
  • Coordinate software development activities within product lines.
  • Ensure product line software development follows industry and SEI best practices.
  • Assist the Product Line Program Manager in establishing and tracking software metrics.
  • Report software risks to the Chief Systems Engineer and Chief Software Engineer through the ERB.
  • Ensure software is documented and brought under Configuration Management.

Requirements

Required:

  • Bachelor's degree or higher in Computer Science, Information Technology, Management Information Systems, or related STEM degree.
  • Senior-level experience deploying microservices into cloud environments.
  • Senior-level experience using software development tools to estimate functions points, estimate complexity, develop virtual machines, cloud environments.
  • Senior-level experience with history of successful software deployments.

Desired:

  • Master's degree or higher in Engineering, Computer Science, Information Technology, Management Information Systems, or related STEM degree.
  • Senior-level experience in designing, maintaining and recapitalizing IT systems.
  • Senior-level experience in refactoring, containerization and hosting applications in a LINUX platform and infrastructure as a service environment.
  • Demonstrated experience with MBSE, processes, tools and languages.

Benefits

At Trinity Global Consulting (TGC), we value our employees and provide a comprehensive benefits package that includes:

  • Medical, Dental & Vision Coverage - Coverage for eligible employees and family through CareFirst and VSP.
  • Paid Time Off - PTO granted in accordance with contract requirements.
  • Paid Holidays - 11 federal holidays observed annually.
  • Disability & Life Insurance - Short-term/long-term disability, life insurance, and AD&D coverage included.
  • 401(k) Retirement Plan - Competitive plan managed through Ameritas.
  • Professional Training - Formal training provided as required, with additional learning opportunities based on role.

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