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Software Engineer Contract Jobs in O Fallon, IL (NOW HIRING)

Experienced Software Engineer Company: The Boeing Company Boeing Global Services is currently ... Represents the organization as the prime technical contact on contracts and projects * Interacts ...

Experienced Software Engineer Company: The Boeing Company Boeing Global Services is currently ... Represents the organization as the prime technical contact on contracts and projects * Interacts ...

Experienced Software Engineer Company: The Boeing Company Boeing Global Services is currently ... Represents the organization as the prime technical contact on contracts and projects * Interacts ...

Software engineers on our team are responsible for all phases of the software lifecycle, including ... Represents the organization as the prime technical contact on contracts and projects * Interacts ...

Description Leidos' Digital Sector/Global Solutions Management-Operations II (GSMO-II) contract has an opening for a Network Software Engineer located in the Scott AFB, IL area. The Network Software ...

Leidos' Digital Sector/Global Solutions Management-Operations II (GSMO-II) contract has an opening for a Network Software Engineer located in the Scott AFB, IL area. The Network Software Engineer ...

Leidos' Digital Sector/Global Solutions Management-Operations II (GSMO-II) contract has an opening for a Network Software Engineer located in the Scott AFB, IL area. The Network Software Engineer ...

US citizenship is required per contract. * Bachelor's degree in Computer Science, Software Engineering, or related field and 4-8 years of prior relevant experience or Master's with 2-6 years of prior ...

US citizenship is required per contract. * Bachelor's degree in Computer Science, Software Engineering, or related field and 4-8 years of prior relevant experience or Master's with 2-6 years of prior ...

Mid-Level Software Engineer

Madison, IL · On-site

$87K - $157K/yr

US citizenship is required per contract. * Bachelor's degree in Computer Science, Software Engineering, or related field and 4-8 years of prior relevant experience or Master's with 2-6 years of prior ...

US citizenship is required per contract. * Bachelor's degree in Computer Science, Software Engineering, or related field and 4-8 years of prior relevant experience or Master's with 2-6 years of prior ...

US citizenship is required per contract. * Bachelor's degree in Computer Science, Software Engineering, or related field and 4-8 years of prior relevant experience or Master's with 2-6 years of prior ...

Mid-Level Software Engineer

Columbia, IL · On-site

$87K - $157K/yr

US citizenship is required per contract. * Bachelor's degree in Computer Science, Software Engineering, or related field and 4-8 years of prior relevant experience or Master's with 2-6 years of prior ...

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Software Engineer Contract information

See O Fallon, IL salary details

$59.2K

$137.6K

$191.7K

How much do software engineer contract jobs pay per year?

As of Aug 6, 2026, the average yearly pay for software engineer contract in O'Fallon, IL is $137,611.00, according to ZipRecruiter salary data. Most workers in this role earn between $111,900.00 and $161,400.00 per year, depending on experience, location, and employer.

What is a software engineer contract?

Software engineer contracts are agreements where software engineers are hired on a temporary basis to work on specific projects or for a set period of time, rather than as permanent employees. Contractors often work for multiple clients, are paid hourly or per project, and may have more flexible schedules. These contracts outline the scope of work, compensation, deadlines, and other terms. Contract software engineers are responsible for delivering quality code and meeting the requirements set by the client or organization. This working arrangement can offer more autonomy, but also less job security and benefits compared to full-time employment.

What are the key skills and qualifications needed to thrive as a software engineer contract?

To thrive as a Software Engineer Contract, you need strong programming skills, a solid understanding of software development methodologies, and a relevant degree or proven experience in computer science or related fields. Familiarity with source control systems (e.g., Git), cloud platforms, and proficiency in languages or frameworks required by the contract are crucial, as are any certifications in areas like AWS or Agile methodologies. Excellent problem-solving, adaptability, and communication skills help you quickly integrate with new teams and deliver results in diverse environments. These skills ensure you can efficiently contribute to projects, meet client expectations, and maintain professional flexibility across various assignments.

What is the difference between Software Engineer Contract vs Software Engineer Full-Time?

AspectSoftware Engineer ContractSoftware Engineer Full-Time
Employment TypeTemporary, project-basedPermanent, ongoing
Work EnvironmentTypically freelance or agency-basedCompany offices or remote
CredentialsUsually similar certifications and skillsSame as contract roles
BenefitsLimited or no benefitsHealth, retirement, paid leave

In summary, Software Engineer Contract roles are temporary positions focused on specific projects, often with fewer benefits, while Software Engineer Full-Time roles offer permanent employment with comprehensive benefits. Both roles require similar skills and credentials but differ mainly in employment stability and perks.

What are some common challenges faced by software engineers working on contract positions, and how can they be managed?

Software engineers on contract often face challenges such as quickly adapting to new codebases, understanding diverse team workflows, and managing changing project scopes. It's important to proactively communicate with team members, clarify project requirements early on, and stay organized to meet tight deadlines. Additionally, maintaining a strong personal workflow and being open to feedback can help contract engineers integrate more smoothly and deliver high-quality results within limited timeframes.
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 are popular job titles related to Software Engineer Contract jobs in O'Fallon, IL? For Software Engineer Contract jobs in O'Fallon, IL, the most frequently searched job titles are:
What cities near O'Fallon, IL are hiring for Software Engineer Contract jobs? Cities near O'Fallon, IL with the most Software Engineer Contract job openings:
Infographic showing various Software Engineer Contract job openings in O'Fallon, IL as of July 2026, with employment types broken down into 84% Full Time, 6% Part Time, and 10% Contract. Highlights an 88% Physical, 3% Hybrid, and 9% Remote job distribution, with an average salary of $137,611 per year, or $66.2 per hour.

Experienced Software Engineer

Boeing

Hazelwood, MO • On-site

Full-time

Medical, Life, Retirement

Re-posted 28 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 536 rated manufacturers


Job description

Experienced Software Engineer
Company:
The Boeing Company
Boeing Global Services is currently seeking a highly motivated Experienced Software Engineer to become part of the Training Systems - Battlespace Simulation Management (BSM) team in Hazelwood, Missouri. This position will support one of our programs in the Air Dominance portfolio.
Are you ready to build the future? Build your career by helping us build the next generation of flight simulators to train our nation's military pilots. Develop subsystems for Boeing Flight Trainers such as the Instructor/Operator Station, Brief/Debrief Station, Synthetic Environments, and core building block technologies used for all our flight trainers (graphics, video, networking, mission planning, exercise management & control).
BSM is responsible for the design, development, manufacture, and maintenance of training devices for a wide variety of commercial and military aircraft - everything from F-15 fighter jets to Apache attack helicopters, and even NASA's Starliner spacecraft. Software engineers on our team are responsible for all phases of the software lifecycle, including architecture, design, implementation and test. They are also directly involved in planning their own work, as part of the agile methodology, with a focus on technical excellence.
The BSM team is a large software development team comprised of several smaller agile teams, some with specialized skills. Our backlog includes everything from new feature development using cutting-edge technology to maintenance of legacy software baselines. The successful candidate will need to be comfortable working in an often fast-paced environment within a two-week "sprint" schedule. As an experienced member of the team, you will be supporting the entire product development life cycle within BSM.
Position Responsibilities:
  • Leads the design, architecture, and development of simulation models, simulation visualizations, virtual environments/platforms and frameworks
  • Partners with stakeholders to lead the review and identification of simulation requirements and dynamics of the systems being simulated.
  • Leads 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
  • Leads the documentation and maintenance of technical code, algorithms, specifications and descriptions of simulation models
  • Partners with cross functional engineering teams to lead integration of simulation software with hardware devices and systems
  • Leads implementing current and emerging technologies, tools, frameworks, and methods in the software engineering simulation environment
  • Leads simulation software project management functions
  • Promotes continuous improvement with ideas for process, tool, and automation improvements
  • Plans and executes work within a scrum team using scaled agile practices
  • Represents the organization as the prime technical contact on contracts and projects
  • Interacts with senior external personnel on significant technical matters often requiring coordination between organizations
  • Support proposal development and lead engineering execution by identifying activities, resources, and tasks required to complete the work statement
  • Mentor junior engineers and foster innovation within the team

Basic Qualifications (Required Skills/ Experience):
  • Bachelor's Degree
  • Ability to acquire a U.S. Secret Security Clearance (Post-Start)
  • 5+ years of experience in software engineering
  • Experience with programming in C, C++ or C#
  • Experience working in an Agile software development methodology environment

Preferred Qualifications (Desired Skills/Experience):
  • 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
  • Prior experience with object-oriented software architecture / design patterns
  • Prior experience with Python, Lua or OpenGL is a plus
  • Developing applications targeted for desktop as well as mobile/tablet environments
  • Experience with tools for Continuous Integration/Delivery, Version Control, and Build Automation
  • Familiarity with tools such as Jira, Jenkins, Gitlab, CMake, Visual Studio
  • Familiarity with simulation standards such as Distributed Interactive Simulation (DIS), Distributed Mission Operations (DMO), and High Level Architecture (HLA)
  • Experience with aircraft platforms, aviation, simulation, and training systems is beneficial
  • Strong written and verbal communication skills along with the ability and desire to work in a team environment

Travel: This position may require up to 10% travel
Drug Free Workplace:
Boeing is a Drug Free Workplace (DFW) 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.
Conflict of Interest:
Successful candidates for this job must satisfy the Company's Conflict of Interest (COI) assessment process.
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.
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: $126,650 - $171,350
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)
Stay safe from recruitment fraud! The only way to apply for a position at Boeing is via our Careers website. Learn how to protect yourself from recruitment fraud - Recruitment Fraud Warning
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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