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Senior Software Developer Jobs in Belleville, IL

The Timberline Group

Lead Software Developer

Saint Louis, MO · On-site +1

$112K - $141K/yr

The individual in this role is a senior member of the IT team who is able to understand the use of ... Software Engineering role. * 6+ years of programming experience in C# .NET. * Past experience ...

Eastman

Senior Software Engineer

Saint Louis, MO · On-site

$114K - $151K/yr

Position Description We are seeking a Senior Software Engineer who is passionate about building ... developer experience and the customer experience. • Design, develop, test, and deploy end-to-end ...

Eastman

Senior Software Engineer

Saint Louis, MO · On-site

$119K - $157K/yr

Position Description We are seeking a Senior Software Engineer who is passionate about building ... developer experience and the customer experience. • Design, develop, test, and deploy end-to-end ...

The Timberline Group

SR. SOFTWARE ENGINEER

Saint Louis, MO · On-site +1

$119K - $157K/yr

Coach less senior Software Engineers in processes, techniques and problem solving methods. Specific Skills may include * Custom Application Development:Maintains knowledge and skills in OO Concepts ...

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All JobsSoftware Developer JobsSenior Software Developer JobsSenior Software Developer Jobs in Belleville, IL

Senior Software Developer information

See Belleville, IL salary details

$14

$59

$85

How much do senior software developer jobs pay per hour?

As of Aug 12, 2026, the average hourly pay for senior software developer in Belleville, IL is $59.96, according to ZipRecruiter salary data. Most workers in this role earn between $50.91 and $67.26 per hour, depending on experience, location, and employer.

What skills and qualifications are needed to thrive as a senior software developer?

To thrive as a Senior Software Developer, you need deep expertise in programming languages, software architecture, and problem-solving, typically backed by a bachelor’s degree in computer science or a related field. Proficiency with development frameworks, version control systems like Git, and cloud platforms such as AWS or Azure is standard, and certifications in these areas can be beneficial. Leadership, strong communication, and mentoring abilities set standout candidates apart in this role. These skills ensure that complex projects are delivered efficiently, code quality is maintained, and junior team members are effectively guided for overall team success.

What does a senior software developer do?

As a Senior Software Developer, you’ll typically be responsible for leading complex development projects, designing technical solutions, and mentoring junior team members. Daily tasks often include writing and reviewing code, participating in architecture discussions, collaborating with cross-functional teams (such as QA, product management, and DevOps), and troubleshooting high-level technical issues. You may also be involved in setting coding standards, conducting code reviews, and helping to plan sprints or project roadmaps.

What is a senior software developer?

Senior Software Developers are experienced professionals who design, develop, and maintain complex software applications. They often lead development teams, mentor junior developers, and make critical architectural decisions. Their responsibilities include writing high-quality code, troubleshooting technical issues, and ensuring that software projects meet performance and security standards. With deep expertise in programming languages and software engineering principles, they play a key role in delivering successful technology solutions for organizations.

What is the difference between Senior Software Developer vs Software Engineer?

AspectSenior Software DeveloperSoftware Engineer
CredentialsBachelor's degree in CS or related field; experience often 5+ yearsBachelor's or higher in CS or related field; similar experience levels
Work EnvironmentCollaborates on complex projects, mentors juniors, leads technical effortsDesigns, develops, tests software; may work on specific modules or systems
Industry UsageCommonly used in tech companies, startups, and enterprise firmsWidely used across industries, often interchangeable with developer roles

The main difference is that Senior Software Developers typically have more experience, leadership responsibilities, and focus on complex project oversight, while Software Engineers may focus more on designing and implementing software solutions. Both roles require similar credentials and are integral in software development teams, but Senior Software Developers often take on mentorship and strategic tasks.

More about Senior Software Developer jobs
What are the most commonly searched types of Software Developer jobs in Belleville, IL? The most popular types of Software Developer jobs in Belleville, IL are:
What are popular job titles related to Senior Software Developer jobs in Belleville, IL? For Senior Software Developer jobs in Belleville, IL, the most frequently searched job titles are:
What job categories do people searching Senior Software Developer jobs in Belleville, IL look for? The top searched job categories for Senior Software Developer jobs in Belleville, IL are:
What cities near Belleville, IL are hiring for Senior Software Developer jobs? Cities near Belleville, IL with the most Senior Software Developer job openings:
Senior Software Developer jobs near you
Infographic showing various Senior Software Developer job openings in Belleville, IL as of August 2026, with employment types broken down into 1% Internship, 84% Full Time, 12% Part Time, and 3% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $124,715 per year, or $60 per hour.

Software Engineer Senior Staff (TS/SCI Required)

Cherokee Federal

Saint Louis, MO • On-site

$119K - $157K/yr

Full-time

Medical, Dental, Vision, Retirement

Posted 2 days ago

New

Job description


Software Engineer
This position requires an active TS/Sensitive Compartmental Information (SCI) clearance with the ability to obtain a Counterintelligence polygraph to be considered.
A government contract requires that this position be restricted to U.S. citizens or legal permanent residents. You must provide documentation that you are a U.S. citizen or legal permanent resident to qualify.
Cherokee Preting is seeking a Software Engineer to support the Erebus Program in St. Louis, MO. The Erebus Program is a newly awarded 7-year effort that delivers cutting-edge intelligence and geospatial data management applications and services to the National Geospatial-Intelligence Agency (NGA).
Compensation & Benefits:
Pay commensurate with experience.
Full time benefits include Medical, Dental, Vision, 401K, and other possible benefits as provided. Benefits are subject to change with or without notice.
Software Engineer Responsibilities Include:
  • Plans, conducts, and coordinates software development activities.
  • Designs, develops, documents, tests, and debugs software that contains logical and mathematical solutions to business/mission problems or questions in computer language for solutions by means of data processing equipment.
  • Applies the appropriate standards, processes, procedures, and tools throughout the development life cycle.
  • Applies knowledge of computer hardware and software, subject matter to be programmed in business/mission applications, information processing techniques used, and information gathered from system users to develop software.
  • Corrects program errors, prepares operating instructions, compiles documentation of program development, and analyzes system capabilities to resolve questions of program intent, output requirements, input data acquisition, programming techniques, and controls. Ensures software standards are met.
  • Performs other job-related duties as assigned

Software Engineer Experience, Education, Skills, Abilities requested:
  • Current TS/SCI with the willingness and ability to obtain a Counterintelligence polygraph
  • Bachelor's Degree in a related field with nine (9) years of related experience OR Master's Degree with seven (7) years of related experience.
  • Knowledge and experience developing multi-tiered or microservice applications.
  • Experience with at least one cloud platform. ie. AWS, Azure, Google.
  • Containerization experience (Docker, Kubernetes, OpenShift).
  • Proficiency in CI/CD tools (GitLab CI, Jenkins).
  • Strong scripting experience.
  • Linux experience.
  • Must pass pre-employment qualifications of Cherokee Federal

Company Information:
Cherokee Preting (Preting) is a part of Cherokee Federal - the division of tribally owned federal contracting companies owned by Cherokee Nation Businesses. As a trusted partner for more than 60 federal clients, Cherokee Federal LLCs are focused on building a brighter future, solving complex challenges, and serving the government's mission with compassion and heart. To learn more about Preting, visit cherokee-federal.com.
#CherokeeFederal #LI-CK4 #IntelCareers
Cherokee Federal is a military friendly employer. Veterans and active military transitioning to civilian status are encouraged to apply.
Similar searchable job titles:
  • Senior Software Developer
  • Lead Software Engineer
  • Principal Software Engineer
  • Senior Application Developer
  • Senior Full Stack Developer

Keywords:
  • Software Architecture
  • Technical Leadership
  • Advanced Programming
  • System Design
  • Code Review & Mentorship

Legal Disclaimer: All qualified applicants will receive consideration for employment without regard to protected veteran status, disability or any other status protected under applicable federal, state or local law.
Many of our job openings require access to government buildings or military installations.
Cherokee Federal logo

About Cherokee Federal

Sourced by ZipRecruiter

Cherokee Federal - a division of Cherokee Nation Businesses - is a team of tribally owned federal contracting companies focused on building solutions, solving complex challenges, and serving the nation's mission around the globe for more than 60 federal clients. Our team of companies manages nearly 1,000 projects of all sizes across the construction, consulting, engineering and manufacturing, health, and technology portfolios. Since 2012, the Cherokee Federal team of companies has won more than $5 billion in government contracts. Our 3,000+ employees work in 26 countries, 50 states and 2 U.S. territories. Why choose Cherokee Federal? Visit our website and learn about the great reasons to join our team. cherokee-federal.com

Industry

Architectural services

Company size

1,001 - 5,000 Employees

Headquarters location

Tulsa, OK, US

Year founded

1969

Social media

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