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Entry Level Software Engineer Jobs in O Fallon, MO

The Software Engineer I supports the development of software that serves Maritz technology, working ... What You'll Be Doing We are looking for an entry level engineer who is eager to learn and build ...

The Software Engineer I supports the development of software that serves Maritz technology, working ... What You'll Be Doing We are looking for an entry level engineer who is eager to learn and build ...

Software Engineer II

O Fallon, MO · On-site

$91K - $124K/yr

A Software Engineer II is an earlycareer or entrylevel engineer who contributes to the design, development, testing, and maintenance of software solutions under the guidance of more senior engineers.

Software Engineer II

O Fallon, MO · On-site

$92K - $147K/yr

A Software Engineer II is an earlycareer or entrylevel engineer who contributes to the design, development, testing, and maintenance of software solutions under the guidance of more senior engineers.

Software Engineer II

O Fallon, MO · On-site

$92K - $147K/yr

A Software Engineer II is an early-career or entry-level engineer who contributes to the design, development, testing, and maintenance of software solutions under the guidance of more senior ...

AWS Data Engineer

Saint Louis, MO · On-site

$108K - $130K/yr

This is an excellent opportunity for entry level candidates and early-career professionals who want ... Engineering, Cloud, or Software Development. * Strong knowledge of SQL and Python. * Basic ...

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Showing results 1-20

Entry Level Software Engineer information

See O Fallon, MO salary details

$22.4K

$98.1K

$176.7K

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

As of Jul 17, 2026, the average yearly pay for entry level software engineer in O'Fallon, MO is $98,054.00, according to ZipRecruiter salary data. Most workers in this role earn between $60,800.00 and $112,200.00 per year, depending on experience, location, and employer.

Will AI replace developers in 2026?

Entry level software engineers will continue to play a vital role in software development, as AI tools are designed to assist rather than fully replace human programmers. Developing skills in coding, problem-solving, and understanding AI integration will remain valuable in the evolving tech environment.

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 engineer makes $500,000 a year?

Highly experienced software engineers, especially those in senior or specialized roles such as machine learning engineers or software architects at large tech companies, can earn $500,000 or more annually. These roles often require advanced skills, extensive experience, and sometimes stock options or bonuses as part of compensation packages.

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

Entry-level software engineer positions often require demonstrating programming skills through personal projects, internships, or coding bootcamps. Building a strong portfolio, learning relevant tools like Git and languages such as Python or Java, and obtaining certifications can improve chances of securing an entry-level role without prior work experience.

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.

Is it true that AI will replace software engineers?

AI is unlikely to fully replace entry-level software engineers, as human skills such as problem-solving, creativity, and understanding complex requirements remain essential. AI tools can assist with coding and automation, but software engineering involves tasks that require critical thinking and collaboration. Developing proficiency in programming languages and understanding AI capabilities can enhance job performance and adaptability in the field.
What are the most commonly searched types of Software Engineer jobs in O'Fallon, MO? The most popular types of Software Engineer jobs in O'Fallon, MO are:
What are popular job titles related to Entry Level Software Engineer jobs in O'Fallon, MO? For Entry Level Software Engineer jobs in O'Fallon, MO, the most frequently searched job titles are:
What cities near O'Fallon, MO are hiring for Entry Level Software Engineer jobs? Cities near O'Fallon, MO with the most Entry Level Software Engineer job openings:
Infographic showing various Entry Level Software Engineer job openings in O'Fallon, MO as of July 2026, with employment types broken down into 95% Full Time, and 5% Part Time. Highlights an 78% In-person, 11% Hybrid, and 11% Remote job distribution, with an average salary of $98,054 per year, or $47.1 per hour.
Entry-Level Simulation Software Engineer

Entry-Level Simulation Software Engineer

Boeing

Hazelwood, MO • On-site

Full-time

Medical, Life, Retirement

This job post has expired today. Applications are no longer accepted.


Boeing rating

8.5

Company rating: 8.5 out of 10

Based on 604 frontline employees who took The Breakroom Quiz

33rd of 528 rated manufacturers


Job description

Entry-Level Simulation Software Engineer

Company:

The Boeing Company

The Boeing Company is looking for an Entry-Level Simulation Software Engineer to join the Support Equipment team located in Berkley, MO. This position will focus on supporting the Boeing Global Services (BGS) Software Engineering organization.

This critical opportunity involves supporting software development for Non-Destructive Inspection equipment, playing a key part in advancing aerospace system safety, reliability, and performance throughout the product lifecycle. Responsibilities include development, integration, and testing of robotics motion modeling, user interface software, and data evaluation tools essential to next-generation inspection systems.

The engineer will be embedded within a collaborative and innovative team environment, operating under a dynamic program structure that encourages cross-functional partnerships among engineering disciplines and integrated product teams. Reporting within an agile framework, the role supports sprint planning, code peer reviews, and the enhancement of comprehensive simulation models and virtual environments designed to optimize system testing and validation.

This opportunity allows engagement with cutting-edge aerospace technology at one of the world's leading aerospace organizations. Emphasis is placed on modernization of legacy systems alongside implementation of emerging tools and methodologies to support ongoing software simulation sustainability.

This role offers a rewarding chance to contribute to mission-critical government aerospace services, supporting the operational readiness and effectiveness of defense and commercial platforms through innovative software solutions and engineering excellence.

Position Responsibilities:

  • Assists with the design, architecture, and development of simulation models, simulation visualizations, virtual environments/platforms and frameworks to enhance test performance, safety, and durability of software and hardware systems throughout the entire product lifecycle

  • Contributes to partnering with stakeholders to review and identify simulation requirements and dynamics of the systems being simulated

  • Assists with designing, modeling, simulation, testing, and analysis to assess and optimize overall system performance and capabilities

  • Participates in data collection and processing for use in simulations

  • Assists with validation, verification, and refinement of simulation software code, models, simulations, test procedures and test environments, executing test procedures, documenting test results and modeling against real-world data, test data, benchmarks, or other similar models

  • Assists with documenting and maintaining technical code, algorithms, specifications and descriptions of simulation models

  • Contributes to partnership with cross functional engineering teams to enable integration of simulation software with hardware devices and systems

  • Assists with implementing current and emerging technologies, tools, frameworks, and methods in the software engineering simulation environment

  • Assists with modernizing, migrating, sustaining, and updating simulation software to adapt legacy systems to new operating systems

  • Assists with simulation software project management functions

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

BasicQualifications (Required Skills/Experience):

  • Bachelor Degree

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

  • 1+ years of experience with programming in C, C++ or C#

  • 1+ years of classroom or work related experience with the Software Development lifecycle (including Requirements Analysis, Design, Code, Integration & Test)

Preferred Qualifications (Desired Skills/Experience):

  • Level 1: 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 or related work experience OR Bachelor's Degree and direct related work experience OR 4+ years of related, relevant experience

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.

Conflict of Interest:
Successful candidates for this job must satisfy the Company's Conflict of Interest (COI) assessment process.

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 Entry-Level (Level 1): $78,200 - $105,800

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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