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Junior Software Developer Jobs in O Fallon, IL (NOW HIRING)

Lead Software Developer

Saint Louis, MO · On-site +1

$112K - $141K/yr

The Lead IT Software Developer is a well-rounded expert on the team in Front-End frameworks (Aurelia, Angular and such) and Back-End (Microsoft SQL and C#/.NET). He / She is the go-to person for any ...

We are seeking a Software Engineer to support unique systems solutions for the National Geospatial-Intelligence Agency (NGA). We are seeking a Software Engineer to support our client's intelligence ...

Now hiring for our Software Developer cohort starting in November 2026. To apply, please submit a formal application through our website: Dev10 Apply Here What We Require Willingness to relocate ...

Showing results 21-40

Junior Software Developer information

See O Fallon, IL salary details

$22.4K

$83K

$128.3K

How much do junior software developer jobs pay per year?

As of Aug 12, 2026, the average yearly pay for junior software developer in O'Fallon, IL is $82,997.00, according to ZipRecruiter salary data. Most workers in this role earn between $62,500.00 and $81,200.00 per year, depending on experience, location, and employer.

What are some typical challenges a junior software developer might face when starting out, and how can they overcome them?

Junior Software Developers often encounter challenges such as understanding large codebases, managing their time effectively between learning and delivering tasks, and adapting to new development tools or frameworks. To overcome these hurdles, it's helpful to actively seek guidance from more experienced team members, participate in code reviews, and make consistent use of documentation. Regular communication within the team and a willingness to ask questions can significantly speed up the learning process and help build confidence in your role.

What does a junior software developer do?

A junior software developer works on a development team writing and maintaining code for computer applications. As a junior software developer, your primary responsibilities are to learn the codebase, work on small bug fixes, and participate in paired programming with mid-level and senior developers. Junior software developers are entry-level positions, but as you gain experience and build up your programming skills, you will start to take on larger projects. Your job duties include attending and contributing to development team meetings, troubleshooting, patching computer code, and collaborating with other developers to create applications.

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

To thrive as a Junior Software Developer, you need proficiency in programming languages (such as Python, Java, or JavaScript), algorithms, and problem-solving, often supported by a relevant degree or coding bootcamp experience. Familiarity with version control systems like Git, basic knowledge of databases, and experience with development frameworks are valuable technical assets. Strong communication, teamwork, and a willingness to learn help you adapt and contribute effectively in collaborative environments. These skills and qualities are essential for delivering reliable code, supporting team goals, and growing in a fast-evolving tech landscape.

What does a junior software developer do?

A Junior Software Developer is an entry-level professional who assists in designing, coding, testing, and maintaining software applications. They typically work under the supervision of more experienced developers and contribute to various stages of the software development lifecycle. Their responsibilities often include writing basic code, debugging, collaborating with team members, and learning new technologies to improve their skills. This role is a great starting point for individuals looking to build a career in software development.
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 Junior Software Developer jobs in O'Fallon, IL? For Junior Software Developer jobs in O'Fallon, IL, the most frequently searched job titles are:
What cities near O'Fallon, IL are hiring for Junior Software Developer jobs? Cities near O'Fallon, IL with the most Junior Software Developer job openings:

Software Developer Engineer (Experienced or Senior)

Boeing

Hazelwood, MO

$51.50 - $68/hr

Full-time

Medical, Life, Retirement

Re-posted 18 days ago


Boeing rating

8.5

Company rating: 8.5 out of 10

Based on 612 frontline employees who took The Breakroom Quiz

33rd of 538 rated manufacturers


Job description

Software Developer Engineer (Experienced or Senior)

Company:

The Boeing Company

The Boeing Company is looking for a Software Developer Engineer (Experienced or Senior) to join the Digital Analytics and System Health (DASH) software team in Hazelwood, MO. This role will support one or more programs in the DASH portfolio within the Boeing Global Services (BGS) organization. The selected candidate will join our dynamic group focused on model-based sustainment simulation capabilities to provide action insights to support faster, data-driven decisions on fleet health. This role will contribute to the development, maintenance, and enhancement of web-based applications, databases, and data processing tools on advanced aircraft programs.

As a member of the DASH software team, you will be involved in the full software development lifecycle, collaborating with cross-functional teams and users to deliver impactful solutions that improve operational efficiency and fleet sustainment. This position offers the opportunity to apply strong system thinking, coordinate complex work, and demonstrate leadership skills in a fast-paced, mission-critical environment.

At Boeing, we innovate and collaborate to make the world a better place. We're committed to fostering an environment for every teammate that is welcoming, respectful, and inclusive, with great opportunities for professional growth. Find your future with us.

Our teams are currently hiring for a broad range of experience levels including Experienced or Senior Engineers.
Position Responsibilities:

  • Design, develop, test, and maintain full stack software solutions that support model based sustainment simulations

  • Collaborate with users and stakeholders to gather requirements and translate them into scalable, maintainable software systems

  • Coordinate complex development efforts across multiple teams and disciplines, ensuring alignment with program objectives

  • Lead or contribute to project planning, code reviews, and agile development processes

  • Troubleshoot, debug, and resolve software issues to ensure reliability and performance

  • Continuously improving software processes, tools, and documentation to enhance team productivity and product quality

  • Apply strong system-level thinking to integrate software components effectively within the broader operational environment

  • Mentor junior engineers and contribute to knowledge sharing within the team

This position is expected to be 100% onsite. The selected candidate will be required to work onsite at one of the listed location options.

Basic Qualifications (Required Skills/Experience):

  • Bachelor's Degree

  • Ability to obtain a U.S. Security Clearance for which the U.S. Government requires U.S. Citizenship

  • 5+ years of experience in full stack software development

Preferred Qualifications (Desired Skills/Experience):

  • Level 3: Bachelor of Science degree from an accredited course of study in engineering, engineering technology (includes manufacturing engineering technology), chemistry, physics, mathematics, data science, or computer science and 5+ years of related work experience OR Bachelor's Degree and 9+ years of directly related work experience OR 13+ years of related, relevant experience

  • Level 4: Bachelor of Science degree from an accredited course of study in engineering, engineering technology (includes manufacturing engineering technology), chemistry, physics, mathematics, data science, or computer science and 9+ years of related work experience OR Bachelor's Degree and 13+ years of directly related work experience OR 17+ years of related, relevant experience

  • 3+ years of experience supporting multiple programs and functions

  • 1+ years of experience with mission/safety-critical software development

  • 1+ years of experience working in aerospace, defense, or similar high-tech industry

  • Strong problem-solving skills and ability to deliver practical, effective solutions

  • Excellent communication and collaboration skills

  • Experience working in an agile development environment

  • Proven leadership or project coordination experience

  • Familiarity with software development best practices, including code reviews, testing, and continuous integration

CodeVue Coding Challenge:

To be considered for this position you will be required to complete a technical assessment as part of the selection process. Failure to complete the assessment will remove you from consideration

Drug Free Workplace:

Boeing is a Drug Free Workplace where post offer applicants and employees are subject to testing for marijuana, cocaine, opioids, amphetamines, PCP, and alcohol when criteria is met as outlined in our policies.

Pay & Benefits:

At Boeing, we strive to deliver a Total Rewards package that will attract, engage and retain the top talent. Elements of the Total Rewards package include competitive base pay and variable compensation opportunities.

The Boeing Company also provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work.

The specific programs and options available to any given employee may vary depending on eligibility factors such as geographic location, date of hire, and the applicability of collective bargaining agreements.

Pay is based upon candidate experience and qualifications, as well as market and business considerations.

Summary Pay Range for Experienced (level 3): $126,650 - $171,350

Summary Pay Range for Senior (level 4): $160,650 - $217,350

Potential signing bonus for eligible/qualified external candidates.

Language Requirements:

Not Applicable

Education:

Bachelor's Degree or Equivalent

Relocation:

This position offers relocation based on candidate eligibility.

Export Control Requirement:

This position must meet U.S. export control compliance requirements. To meet U.S. export control compliance requirements, a "U.S. Person" as defined by 22 C.F.R. 120.62 is required. "U.S. Person" includes U.S. Citizen, U.S. National, lawful permanent resident, refugee, or asylee.

Safety Sensitive:

This is not a Safety Sensitive Position.

Security Clearance:

This position requires the ability to obtain a U.S. Security Clearance for which the U.S. Government requires U.S. Citizenship. An interim and/or final U.S. Secret Clearance Post-Start is required.

Visa Sponsorship:

Employer will not sponsor applicants for employment visa status.

Contingent Upon Award Program

This position is not contingent upon program award

Shift:

Shift 1 (United States of America)

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Boeing is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, national origin, gender, sexual orientation, gender identity, age, physical or mental disability, genetic factors, military/veteran status or other characteristics protected by law.

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