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Entry Level Software Developer Jobs in O Fallon, IL

Boeing

Embedded Software Engineer - Entry-Level

Berkeley, MO · On-site

$123K - $162K/yr

Embedded Software Engineer - Entry-Level Company: The Boeing Company The Boeing Company is looking ... The role also involves adopting emerging tools, technologies, and frameworks aligned with DevOps ...

Boeing

Embedded Software Engineer - Entry-Level

Berkeley, MO · On-site

$123K - $162K/yr

Embedded Software Engineer - Entry-Level Company: The Boeing Company The Boeing Company is looking ... The role also involves adopting emerging tools, technologies, and frameworks aligned with DevOps ...

Boeing

Embedded Software Engineer - Entry-Level

Hazelwood, MO · On-site

$124K - $163K/yr

Embedded Software Engineer - Entry-Level Company: The Boeing Company The Boeing Company is looking ... The role also involves adopting emerging tools, technologies, and frameworks aligned with DevOps ...

Boeing

Embedded Software Engineer - Entry-Level

Hazelwood, MO · On-site

$124K - $163K/yr

Embedded Software Engineer - Entry-Level Company: The Boeing Company The Boeing Company is looking ... The role also involves adopting emerging tools, technologies, and frameworks aligned with DevOps ...

Boeing

Embedded Software Engineer - Entry-Level

Hazelwood, MO · On-site

$124K - $163K/yr

Embedded Software Engineer - Entry-Level Company: The Boeing Company The Boeing Company is looking ... The role also involves adopting emerging tools, technologies, and frameworks aligned with DevOps ...

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All JobsSoftware Developer JobsEntry Level Software Developer JobsEntry Level Software Developer Jobs in O'Fallon, IL

Entry Level Software Developer information

See O Fallon, IL salary details

$27.5K

$93.5K

$225.3K

How much do entry level software developer jobs pay per year?

As of Aug 26, 2026, the average yearly pay for entry level software developer in O'Fallon, IL is $93,528.00, according to ZipRecruiter salary data. Most workers in this role earn between $59,200.00 and $98,900.00 per year, depending on experience, location, and employer.

What is an entry level software developer?

Entry level software developers are professionals who are at the beginning of their software development careers. They typically have foundational knowledge of programming languages, software development methodologies, and problem-solving skills. Entry level developers work under the guidance of more experienced engineers to write code, fix bugs, and contribute to software projects. Their responsibilities often include learning new technologies, collaborating with team members, and gaining practical experience to advance in their careers.

What does an entry level software developer do?

An entry-level software developer has simpler duties compared to more senior members of the field. At the entry level, your responsibilities are to create simple, single-thread code to achieve a specific task. These bits of code can be combined to create a larger program. You may also have to create or write a design algorithm by which you create software. However, most of the time, as an entry-level developer, you are in charge of debugging. You have to comb through the code of a piece of software to remove errors.

What types of projects and tasks can I expect to work on as an entry level software developer?

As an entry level software developer, you will typically be assigned to work on smaller modules or features within larger projects, often under the guidance of more experienced developers. Your daily tasks may include writing and testing code, fixing bugs, participating in code reviews, and collaborating with team members through agile sprints or regular meetings. You'll also have opportunities to learn new technologies, contribute to documentation, and gradually take on more complex responsibilities as you gain experience. This environment encourages continuous learning and close collaboration with others, helping you build both technical and teamwork skills.

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

To thrive as an Entry Level Software Developer, you need a solid understanding of programming languages such as Java, Python, or C++, along with a relevant degree or coding bootcamp experience. Familiarity with version control systems like Git, integrated development environments (IDEs), and basic knowledge of databases is important. Strong problem-solving abilities, attention to detail, and effective teamwork set standout candidates apart. These skills and qualities are crucial for building reliable software, collaborating with colleagues, and adapting to evolving technical requirements.

What is the difference between Entry Level Software Developer vs Junior Software Engineer?

AspectEntry Level Software DeveloperJunior Software Engineer
Required CredentialsBachelor's in CS or related field, coding bootcamp experienceBachelor's in CS or related field, internship experience
Work EnvironmentTech companies, startups, software firmsTech companies, consulting firms, startups
Employer UsageCommonly used in job postings and industryOften used interchangeably with Entry Level Software Developer

Both roles typically require a bachelor's degree in computer science or related fields and some coding experience. They work in similar environments like tech companies and startups. The terms are often used interchangeably, but 'Junior Software Engineer' may emphasize a slightly more engineering-focused role. Overall, they represent entry-level positions for aspiring software professionals.

How to get an entry level software developer job with no experience?

To secure an entry level software developer position with no experience, focus on building a portfolio of projects, contribute to open-source code, and learn relevant programming languages like Python or Java. Gaining familiarity with tools such as Git and completing certifications or coding bootcamps can also improve your chances. Internships or apprenticeships can provide practical experience and industry exposure.
More about Entry Level Software Developer jobs

What are the most commonly searched types of Software Developer jobs in O'Fallon, IL?

The most popular types of Software Developer jobs in O'Fallon, IL are:

What are popular job titles related to Entry Level Software Developer jobs in O'Fallon, IL?

For Entry Level Software Developer jobs in O'Fallon, IL, the most frequently searched job titles are:

What cities near O'Fallon, IL are hiring for Entry Level Software Developer jobs?

Cities near O'Fallon, IL with the most Entry Level Software Developer job openings:

Entry Level Software Developer jobs near you
Infographic showing various Entry Level Software Developer job openings in O'Fallon, IL as of August 2026, with employment types broken down into 1% As Needed, 90% Full Time, 6% Part Time, and 3% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $93,528 per year, or $45 per hour.

Entry-Level Software Developer (Python Required) with Security Clearance

Saint Louis, MO • On-site

Bailey Information Technology, LLC
See more jobs at Bailey Information Technology, LLCexternal

Other

Posted 25 days ago

Job description

Bailey Information Technology, LLC TS/SCI -Entry-Level Software Developer (Python Required) * St. Louis, MO
* Information Technology Entry-Level Software Developer (Python Required) Location: St. Louis, MO Clearance: HSPD-12 / ability to obtain TS/SCI w/ Poly Required Certifications: DD8140 compliant Certification (Security+) w/in 3 months Level: T1 (Target) Job Description: The BIT, LLC is recruiting for a junior (entry level) software developer to work on the design and coding with software solutions for the Aeronautical Navigation Office.  The ideal candidate has a familiarity with and a baseline understanding of software development concepts, developing coding skills using different tools, and ambition towards future projects in support of the mission.    Responsibilities: The applicant must possess competence with Python and should have working knowledge JavaScript/TypeScript.  Other duties include working with Docker, AWS Cloud, and familiarity with JSON APIs. This role includes creation and documentation of new and existing functionality within software version control repositories (GitLab) and utilizing DevOps principals and tools to deliver new features within an Agile construct. Participate in program Agile software development initiatives (standup, planning, Increment planning) to support innovation and enhancement of custom applications through iteration/functionality testing. Primary responsibilities will involve developing configurations and features for processing Safety of Navigation (SoN) data through an Optical Character Recognition (OCR), Machine Learning (ML) application. This role includes API development and database integration for interaction with React frameworks, using various open-source packages for visualization and data filtering and code modifications that shall apply best practices in unit and build testing. Participate and collaborate with team members to assess tickets to ensure proper testing and delivery of functionality per User Story Acceptance Criteria Core Qualifications: * Minimum 1 year of experience with Python. * Experience with modern JavaScript development framework. * Experience with unit testing, continuous integration tools, and Gitlab version control * Proactive self-starter demonstrates a positive, willing attitude and excellent oral and written communication skills. * Experience in either software development projects or software integration projects in a service-oriented environment (Cloud, SOA, Web-Services) or virtualization environment. * Requires BS degree and 2+ years of prior relevant experience or Masters with less than 2 years of prior relevant experience; OR 4 years of related experience. * Organizational Skills: Can plan and prioritize work. Follow tasks to their logical conclusion and make sure that everything has been done to the right standard. Good attention to detail. * Communications: Ability to communicate clearly and efficiently with team members and clients, verbally and in writing. Able to present ideas in a variety of ways depending upon audience and context. Preferred Qualifications: * At least 1 year of experience with Optical Character Recognition (OCR) and/or Computer Vision (CV) Technologies (AWS Textract, Tesseract, OpenCV) * At least 1 year of experience with DoD Aeronautical Datasets * At least 2 years of experience with AWS cloud formation templates and/or AWS CDK. * Experience with 2D data (HTML Canvas, OpenLayers, Leaflet, GeoJSON, Godot) * AWS Solutions or DevOps certification * Team Collaboration tools (Jira, Confluence) * Ability to obtain TS/SCI with Polygraph

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