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Entry Level Software Engineer Jobs in O Fallon, IL

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Entry Level Software Engineer information

See O Fallon, IL salary details

$22.4K

$97.8K

$176.3K

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

As of Aug 6, 2026, the average yearly pay for entry level software engineer in O'Fallon, IL is $97,817.00, according to ZipRecruiter salary data. Most workers in this role earn between $60,600.00 and $111,900.00 per year, depending on experience, location, and employer.

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

AspectEntry Level Software EngineerSoftware Developer
Required CredentialsBachelor's in CS or related field; some internshipsBachelor's in CS or related; coding experience
Work EnvironmentTeam-based, collaborative projects, entry-level tasksProject-focused, coding, debugging, and implementation
Employer & Industry UsageTech companies, startups, IT departmentsSoftware firms, tech startups, enterprise IT
Common Search & ComparisonYesYes

Entry Level Software Engineers and Software Developers often share similar educational backgrounds and work environments. The main difference lies in their roles: engineers may focus more on designing systems and architecture, while developers typically concentrate on coding and implementation. Both roles are essential in tech industries and often overlap in job functions, but understanding these distinctions helps job seekers target the right positions.

What types of projects do entry level software engineers typically work on, and how do they collaborate with other team members?

Entry level software engineers often start by working on smaller features, bug fixes, or assisting with testing and documentation within larger projects. They usually collaborate closely with senior engineers, product managers, and QA teams through code reviews, daily stand-ups, and pair programming sessions. This structure helps new engineers learn best practices, understand the codebase, and gradually take on more complex assignments. Effective communication and a willingness to learn are key to success in these collaborative environments.

What does an entry level software engineer do?

An entry level software engineer is responsible for assisting in the design, development, testing, and maintenance of software applications. They typically work under the guidance of more experienced engineers and may write code, debug programs, and participate in code reviews. The role often involves learning company-specific tools and workflows, collaborating with team members, and continuously improving technical skills. Entry level software engineers are expected to adapt quickly, communicate effectively, and contribute to the team's overall goals.

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

To thrive as an Entry Level Software Engineer, you need a solid understanding of programming languages (such as Java, Python, or C++), computer science fundamentals, and often a relevant bachelor’s degree. Familiarity with version control systems like Git, development frameworks, and basic software development tools is typically expected. Strong problem-solving abilities, eagerness to learn, and effective collaboration are standout soft skills in this role. These skills are crucial for building reliable software, adapting to evolving technologies, and contributing productively to team projects.

What does an entry level software engineer do?

An Entry-Level Software Engineer, also called a Junior Engineer, works with a team of mid-level and senior engineers to develop, test, and maintain software applications and programs. The job duties of Junior Software Engineers typically include relatively simple routine tasks, such as debugging, testing, and code documentation. These tasks hone a Junior Engineer’s skills and familiarize them with the company’s code base. As Software Engineers gain more years of experience, they work on more complex development projects.

What is the entry-level position for a software engineer?

The entry-level position for a software engineer is typically called a Software Engineer I or Junior Software Engineer. It involves basic coding, debugging, and learning company tools and processes, often requiring familiarity with programming languages like Java, Python, or C++. This role provides foundational experience and may require a bachelor's degree in computer science or related fields.

How to get a job as an entry level software engineer with no experience?

To secure an entry level software engineer position with no experience, focus on building a strong foundation in programming languages like Python or Java, create a portfolio of personal projects, and gain familiarity with tools such as Git and Linux. Internships, coding bootcamps, and certifications can also improve your chances by demonstrating practical skills to employers.

Is 25 too late to become an entry level software engineer?

Entry level software engineering roles are open to individuals of various ages, including those starting in their mid-20s. Many employers value skills, relevant training, and problem-solving ability over age, and career changers often successfully transition into software engineering at this stage by learning programming languages and gaining practical experience. Age is generally not a barrier to entering the field at an entry level.
More about Entry Level Software Engineer jobs
What are the most commonly searched types of Software Engineer jobs in O'Fallon, IL? The most popular types of Software Engineer jobs in O'Fallon, IL are:
What cities near O'Fallon, IL are hiring for Entry Level Software Engineer jobs? Cities near O'Fallon, IL with the most Entry Level Software Engineer job openings:
Entry Level Software Engineer jobs near you
Infographic showing various Entry Level Software Engineer job openings in O'Fallon, IL as of August 2026, with employment types broken down into 85% Full Time, 11% Part Time, 3% Contract, and 1% Nights. Highlights an 88% Physical, 3% Hybrid, and 9% Remote job distribution, with an average salary of $97,817 per year, or $47 per hour.

Civil or Mechanical Engineer - Entry Level

Farnsworth Group

Saint Louis, MO • On-site

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 12 days ago

Job description

Farnsworth Group is seeking an Entry-Level Engineer in one of the below posting location. In this role, you will work with experienced engineers on telecommunications and utility projects. This is an excellent opportunity to gain valuable knowledge and experience in the utility engineering industry.
Posting Locations: Frisco, TX, Lisle, IL, St. Louis, MO
What You'll Do:
  • Support telecommunication and utility related project development
  • Complete site visits including but not limited to surveying, locating, and documenting existing conditions (may include overnight travel depending on job location)
  • Review roadway plans to identify conflicts with existing utilities
  • Design telecommunications and other utility projects using MicroStation, AutoCAD, or other design software

What You'll Need:
  • BS in Civil or Mechanical Engineering, from an ABET accredited institution
  • 0-3 years of experience
  • Exposure to transportation plans, telecommunications, or utilities a plus
  • Engineer in Training (EIT) certification a plus
  • Computer proficiency with MS Office - Word, Excel, PowerPoint and MS Project
  • Must demonstrate strong written and oral communication skills
  • Must be willing to travel and have a valid driver's license

Nice To Haves: (optional; not all jobs will have this separate list)
  • Working knowledge of AutoCAD and/or MicroStation

Who We Are
Join Farnsworth Group, a nationally recognized architectural, engineering, and surveying firm, where your career can thrive! For ten consecutive years, we've been certified as a Great Place to Work®, and our engineers, architects, surveyors, and scientists channel their passion and expertise into making meaningful contributions to the world around us. With almost 650 talented professionals across 24 offices, we collaborate with clients ranging from small communities to some of the world's largest brands. Our success is built on our people - their passion, creativity, and commitment to excellence. Here, you'll find a supportive culture that champions your growth, embraces challenges, values work-life balance, and empowers you to make a lasting impact for our clients and the communities we serve. Join us and move your career forward.
A Great Place to Work Certified
For ten consecutive years, Farnsworth Group has earned the prestigious Great Place to Work® certification-thanks to our employees! Each year, our staff participates in a survey administered by the Great Place to Work organization, measuring perceptions of credibility, respect, pride, fairness, and camaraderie. The results are benchmarked against the nation's leading companies, and only top performers receive the certification. Insights from the survey help us continually enhance our work environment and foster a culture that makes Farnsworth Group an even greater place to work.
Featured benefits and perks include:
  • 401(k) with 100% Company Match up to 5%
  • Medical/Dental/Vision Insurance Plans
  • Flexible Spending and Health Savings Accounts
  • Short & Long-Term Disability
  • Maternity and Paternity Leave
  • Professional Development and Training
  • Mentoring Program
  • Paid Time Off
  • Wellness/Fitness Reimbursements
  • Pet Insurance Plan
  • Hybrid Work Program

Farnsworth Group appreciates that flexibility and work-life balance are important aspects of the careers and lives of our employees. Our Hybrid Work Program offers employees a flexible work arrangement while contributing to the Company's culture and success.
Statement on Diversity and Inclusion
Farnsworth Group is a collection of employees with unique backgrounds and perspectives that all come together to make us a better Company. It is our goal to recruit, hire, develop, retain, and promote a diverse group of people. Join us...and let's make a difference, together.
Farnsworth Group, Inc. is proud to be a M/F Disabled and Veteran EEO/AA employer.
For immediate consideration, please Apply Online by clicking on the "Apply for this Position" tab below.
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