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Assistant Developer Jobs in Overland, MO (NOW HIRING)

Booz Allen Hamilton

Agentic AI Developer

O Fallon, IL

$99K - $225K/yr

As an experienced engineer, you know that machine learning is critical to understanding and ... As part of this commitment, the use of artificial intelligence (AI) or other tools to assist with ...

Esri

Application Developer - JavaScript

Saint Louis, MO · On-site

$83K - $141K/yr

... * Assist in prototyping and experimenting with novel web-based maps, scenes, and spatial data ... Bachelor's degree in computer science, engineering, mathematics, GIS, or related field * Ability to ...

Esri

Application Developer - JavaScript

Saint Louis, MO · On-site

$83K - $141K/yr

... * Assist in prototyping and experimenting with novel web-based maps, scenes, and spatial data ... Bachelor's degree in computer science, engineering, mathematics, GIS, or related field * Ability to ...

MasTec Industrial

Field Engineer

Saint Louis, MO · On-site

The Field Engineer will oversee and execute the project controls and management of a multiple ... Learn and Assist the Project Manager with these activities. * Lead the budgeting process of taking ...

MasTec Industrial

Field Engineer

Saint Louis, MO · On-site

The Field Engineer will oversee and execute the project controls and management of a multiple ... Learn and Assist the Project Manager with these activities. * Lead the budgeting process of taking ...

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Assistant Developer information

See Overland, MO salary details

$15

$23

$39

How much do assistant developer jobs pay per hour?

As of Aug 15, 2026, the average hourly pay for assistant developer in Overland, MO is $23.09, according to ZipRecruiter salary data. Most workers in this role earn between $17.74 and $25.14 per hour, depending on experience, location, and employer.

How does an assistant developer typically collaborate with senior developers and other team members during a project?

As an Assistant Developer, you will work closely with senior developers by supporting code development, testing, and documentation tasks. Collaboration usually involves regular code reviews, daily stand-up meetings, and pairing sessions to troubleshoot issues or implement new features. You may also communicate with designers, project managers, and QA testers to ensure your contributions align with project goals and standards. This environment offers valuable learning opportunities and helps you develop both technical and teamwork skills essential for career growth.

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

To thrive as an Assistant Developer, you need a solid understanding of programming fundamentals, familiarity with core languages like JavaScript, Python, or Java, and typically a relevant degree or coding bootcamp experience. Experience with version control systems such as Git, basic knowledge of IDEs, and exposure to databases are commonly required, while certifications like Microsoft or Oracle can be beneficial. Strong problem-solving abilities, attention to detail, and a willingness to learn make candidates stand out in this role. These skills and qualities are essential for effectively supporting software projects, adapting to new technologies, and contributing to collaborative development teams.

What is an assistant developer?

Assistant Developers are entry-level professionals who support software development teams by assisting with coding, debugging, testing, and documentation tasks. They often work under the supervision of senior developers, learning best practices and contributing to projects as they develop their technical skills. Assistant Developers typically have foundational knowledge in programming languages and software development methodologies and help ensure that projects run smoothly by handling routine tasks and providing support where needed.

What is the difference between Assistant Developer vs Junior Developer?

AspectAssistant DeveloperJunior Developer
Required CredentialsTypically an associate degree or relevant certificationsUsually an associate degree or coding bootcamp certification
Work EnvironmentSupportive team, assisting senior developers in projectsHands-on coding, learning, and executing tasks under supervision
Employer & Industry UsageCommon in tech companies, startups, and IT departmentsWidely used across software development firms and tech industries
Search & Comparison IntentOften searched by those starting in tech roles or seeking entry-level positionsSimilar search intent, focusing on entry-level development roles

The main difference between an Assistant Developer and a Junior Developer lies in their responsibilities and experience level. Assistant Developers typically support senior team members and focus on learning, while Junior Developers actively write code and handle tasks independently under supervision. Both roles are entry-level and require similar educational backgrounds, but the Junior Developer role emphasizes hands-on coding experience.

What are the most commonly searched types of Developer jobs in Overland, MO?

The most popular types of Developer jobs in Overland, MO are:

What cities near Overland, MO are hiring for Assistant Developer jobs?

Cities near Overland, MO with the most Assistant Developer job openings:

Assistant Developer jobs near you
Infographic showing various Assistant Developer job openings in Overland, MO as of August 2026, with employment types broken down into 1% As Needed, 74% Full Time, 20% Part Time, 1% Temporary, and 4% Contract. Highlights an 98% Physical, 1% Hybrid, and 1% Remote job distribution, with an average salary of $48,035 per year, or $23.1 per hour.

Application Developer II

Cass Information Systems Inc.

Bridgeton, MO • On-site

Full-time

Re-posted 8 days ago

Job description

The Application Developer II is responsible for the development and deployment of technology to meet the needs and requirements of Cass. This position will handle fixing system bugs of simple to medium complexity and will develop system enhancements or assist others on larger more complex enhancements.

PRINCIPAL RESPONSIBILITIES AND DUTIES:

  • Participates in the planning, design, and implementation effort as assigned by the business or IT management.
  • Develops and maintains modules based on technical designs and development standards.
  • Remediates production bugs/defects as assigned.
  • Supports quality assurance testing to confirm that acceptance criteria are met.
  • Recommends changes to the processes, techniques, and technology to improve product quality, work efficiency, system performance and workload balance.
  • Mentors junior development team members when needed.
  • Participates in brainstorming, discussion, and estimation sessions.
  • Performs other duties as assigned.

SKILLS AND ABILITIES REQUIRED:

  • Strong communication skills both written (technical documentation) and verbal (presentations to IT team members and other division teams).
  • Ability to multi-task while still maintaining an attention to detail.
  • Have a solid understanding of telecommunications carrier billing standards and formats.
  • Knowledge of OOP design and patterns.
  • Knowledge of Core, Web, and MVC.
  • Knowledge of Micro Services Architecture.
  • Knowledge of cloud services (Azure preferred).
  • Experience using DevOps and Agile practices.

MINIMUM LEVEL OF PREPARATION AND TRAINING NORMALLY REQUIRED:

    • Bachelor’s degree in computer science or software engineering, or equivalent work experience.
    • 3-5 years of experience as a developer utilizing modern C#, Visual Studio, SQL 2012+.

    APPLICATION PROCESS:

    You can directly apply through Cass's website at https://www.cassinfo.com/careers. Please apply directly to this position via the “Apply” button. You will be required to create an account and provide your resume, contact information and other pertinent employment information. This process typically takes 20 minutes or less. Should we find that you meet the minimum requirement of the position, a member of our recruiting team will be in touch to start the interview process.

    ABOUT OUR COMPANY:

    Cass Information Systems, Inc. (NASDAQ: CASS) is a leading provider of integrated information and payment management solutions. Cass enables enterprises to achieve visibility, control and efficiency in their supply chains, communication networks, facilities, and other operations. Disbursing over $94 billion annually on behalf of its clients, and with total assets of $2.5 billion, Cass is uniquely supported by Cass Commercial Bank. Founded in 1906 and a wholly-owned subsidiary, Cass Commercial Bank provides sophisticated financial exchange services to the parent organization and its clients. Cass is part of the Russell 2000®. More information is available at www.cassinfo.com.

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