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Software Developer Contract Jobs in Illinois (NOW HIRING)

Sr. Software Developer

Chicago, IL

$56.25 - $74.25/hr

We are looking for an Oracle ERP Techno Functional Developer to support Oracle EBS R12.2.5 ... This position will be a full-time contract and hybrid role with three days onsite and two days ...

Data Engineer Software Developer

Shiloh, IL · On-site

$106K - $128K/yr

The Leidos Digital Modernization Group seeks a Data Engineer Software Developer for the Global Solution Management - Operations II (GSM-O II) contract, under the Global Automations & Intelligent ...

Data Engineer Software Developer

Shiloh, IL

$106K - $128K/yr

The Leidos Digital Modernization Group seeks a Data Engineer Software Developer for the Global Solution Management - Operations II (GSM-O II) contract, under the Global Automations & Intelligent ...

Java Multiple roles

Chicago, IL · On-site

$75 - $85/hr

College diploma or university degree in the field of computer science or software engineering, and/or 8+ years equivalent work experience. Job Title: Java Developer Duration: 3-6Months Contract ...

We have an outstanding Contract position for a Software Engineer to join a leading Company located in the Rolling Meadows, IL surrounding area. Pay Rate: $151.39 ** US Citizenship is required.

We have an outstanding Contract position for a Software Engineer to join a leading Company located in the Rolling Meadows, IL surrounding area. Pay Rate: $151.39 ** US Citizenship is required.

Engenheiro Software

Oak Brook, IL · On-site

$84K - $129K/yr

Work with internal teams and external sources to obtain and communicate data relative to engineering requirements. * Facilitate software asset management, including maintenance contracts. * Prepare ...

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Software Developer Contract information

See Illinois salary details

$46.5K

$108.4K

$160.9K

How much do software developer contract jobs pay per year?

As of Jun 16, 2026, the average yearly pay for software developer contract in Illinois is $108,381.00, according to ZipRecruiter salary data. Most workers in this role earn between $87,200.00 and $126,000.00 per year, depending on experience, location, and employer.

What are the typical work arrangements and expectations for contract Software Developers?

Contract Software Developers are usually hired for specific projects or defined timeframes, which can range from several weeks to multiple months, often working remotely or on-site depending on client needs. They are expected to quickly understand project requirements, deliver code efficiently, and collaborate with both in-house teams and other contractors, maintaining flexibility to adapt to different workflows and tools. Because contract roles may not include the same onboarding experience as permanent positions, self-motivation and strong independent work habits are important. This work arrangement provides valuable exposure to various industries and technologies, often expanding a developer’s professional network and enhancing career versatility.

What are the key skills and qualifications needed to thrive in the Software Developer Contract position, and why are they important?

A successful Software Developer Contract requires strong programming abilities, solid knowledge of software development methodologies, and relevant project or domain expertise, often supported by a degree in computer science or a related field. Familiarity with languages like Java, Python, or JavaScript, as well as tools such as Git, Agile frameworks, and certification in areas like AWS or Scrum, is highly valued. Excellent problem-solving skills, adaptability, effective communication, and an ability to quickly integrate into new teams are crucial soft skills. These competencies enable contract developers to deliver high-quality solutions while efficiently navigating diverse projects and rapidly changing work environments.

What is a Software Developer Contract job?

A Software Developer Contract job is a temporary or project-based position where a developer is hired for a specific duration, typically through a contract agreement. Contractors may work independently, for an agency, or directly with a company to develop, test, and maintain software applications. These roles often offer flexibility but may not include benefits like health insurance or paid time off. Contract developers are usually paid hourly or per project and may work remotely or on-site depending on the employer's needs.

What are the most commonly searched types of Software Developer jobs in Illinois? The most popular types of Software Developer jobs in Illinois are:
What cities in Illinois are hiring for Software Developer Contract jobs? Cities in Illinois with the most Software Developer Contract job openings:

Intermediate Software Developer with Security Clearance

Seneca Holdings

Rock Island, IL

Other

Medical, Dental, Retirement, PTO

Posted 18 days ago


Job description

Western Door Federal is part of the Seneca Nation Group (SNG) portfolio of companies. SNG is the federal government contracting business wholly owned by the Seneca Nation of Indians . SNG meets mission-critical needs of federal civilian, defense, and intelligence community customers across a variety of domains.

The SNG portfolio receives shared services support from its parent company Seneca Holdings and is comprised of multiple companies that participate in the Small Business Administration 8(a) program. To learn more visit www.senecanationgroup.com and follow us on LinkedIn . The Seneca Nation Group companies offer competitive compensation and a strong benefits package including comprehensive medical and dental care, matching 401K, paid time off, flexible spending accounts, disability coverage, and other benefits that help provide financial protection for you and your family.

We pride ourselves on our collaborative work environment and culture which embraces our mission of providing financial and non-financial benefits back to the members of the Seneca Nation. This position is to provide the Knowledge and Data Management Branch (KDM) of DEVCOM Chemical Biological Center located at Rock Island Arsenal, IL. KDM develops and maintains information systems for several government customers.

The majority of the KDM mission supports the Joint Executive Program Office for Chemical, Biological, Radiological, and Nuclear Defense (JPEO-CBRND). This mission directly supports the acquisition programs for CBRN Equipment (CBRNE) for the Warfighter. KDM requires contractor support using non-personal services contracts to execute their mission of developing accredited information systems.

Western Door Federal is seeking a Software Developer - Intermediate at the Rock Island Arsenal, in Rock Island, IL. The objective of this work is to provide on-site support and be responsible for the day-to-day performance of the work/contract. Responsibilities include, but are not limited to: * Responsible for full-stack software development to include back-end database script artifacts (tables, indexes, functions, stored procedures, etc.), middle tier software code that moves data from databases, applies any business rules and responds to client requests, and client software that covers a wide range of user / data consumer interactions.

* Work under general technical direction, to develop, modify moderately to highly complex web-based applications. * Design, code, test, debug, document, and maintain full stack web-applications. * Work in a software development life cycle, apply security and vulnerability best practices, and require little or no instruction and guidance in performing routine tasks.

* Collaborate with other members of the DEVCOM CBC software development team, understand and implement change requests, have superb interpersonal and communication skills. * Participate in team meetings with the government to improve understanding of the mission, tools, concepts, frameworks, and increase effectiveness in delivering software code. * Develop and deliver C# and Microsoft .NET Software Code for DEVCOM CBC KDM.

Includes proficiency with old and new Microsoft .NET Frameworks (.NET Framework, .NET Core, etc) There is legacy code that needs to be maintained. Some of the legacy code may need to be refactored, which may include re-writing to use newer framework versions. * Work proficiently in the latest in library code for Microsoft .NET and demonstrate the ability to effectively apply Microsoft and other 3rd party library code written for .NET to delivered software code solutions.

* Develop and deliver Web Based Client Software Code for DEVCOM CBC KDM using HTML, JavaScript, CSS, and associated frameworks such as Bootstrap, jQuery, etc. * Develop and deliver SQL Database Scripts for DEVCOM CBC KDM; includes developing SQL database scripts to create, remove, update database objects such as tables, indexes, stored procedures, user functions, etc. Scripts not only must account for changing the schema, but also transforming any data because of a schema change.

Scripts must be written with database version control in mind. The IS solutions exist in several environments such as developer, test, staging and production on one or more devices. Therefore, the database in these environments may exist in various versions or states.

Any developer or build machine should be able to run scripts from a given database version / state up to the latest. * Review code based on the code review standards below "PRIOR" to request a code review. Regular, recurring, and continuous re-work within the AQL levels are cause for concern.

Includes writing any applicable unit testing software code. Code review consists of software code that: * Contains no errors or warnings using code analysis tools in use by the government. * Passes builds and executes as intended.

* No style analysis errors or warnings. * Passes all unit tests. * Adheres to refactoring best practices.

The government shall provide instruction, documentation, or publications. The standards are industry best practices for refactoring code and using published design patterns. * Create, update, and deliver application documentation for DEVCOM CBC KDM.

Application documentation includes any artifacts such as narratives, diagrams, flow charts, UML diagrams, etc that further describe design patterns, refactoring, of software code beyond comments, and inline documentation markup in the software code. All documentation will be evaluated for adherence to proper formatting, completeness, accuracy and ease of understanding. * Other examples include, but are not limited to: * Application configuration guide * User guide/documentation * IA documentation * Develop application documentation using GFP and government furnished software, stored and worked on government resources.

Basic Qualifications: * Active Secret Clearance * DoD 8570.01-M IAT Level I Certification * Apply skills at a complexity level and velocity equivalent to three (3) years of paid experience in developing full stack web-based applications. * Have effective technical, communication, skills, and experience to recommend design solutions and improvements that enhance the software cost, schedule, performance. * Proficient with C# and Microsoft .NET Software Code for DEVCOM CBC KDM.

Includes proficiency with old and new Microsoft .NET Frameworks (.NET Framework, .NET Core, etc) * Proficient in the latest in library code for Microsoft .NET and demonstrate the ability to effectively apply Microsoft and other 3rd party library code written for .NET to delivered software code solutions. * Proficient with developing web-based client software using HTML, JavaScript, CSS, and associated frameworks such as Bootstrap, jQuery, etc. * Proficient with delivering SQL Database Scripts; includes developing SQL database scripts to create, remove, update database objects such as tables, indexes, stored procedures, user functions, etc.

versions or states. * Excellent attention to detail. * Excellent written and oral communication skills.

Desired Qualifications: * Bachelor's Degree, or higher, in Computer Science, Information Systems, Information Technology, or a similar program. Salary at Seneca is based on a variety of factors including but not limited to location, experience, skill set, performance, licensure and certification, as well as contract-specific affordability and organizational requirements. The range of this position in other geographic locations may differ.

The projected compensation range for this position is below. The estimate displayed represents the typical salary range for this position and is just one component of our total compensation package for employees. The projected compensation range for this position is: $98,000 - $117,000 USD Equal Opportunity Statement: Seneca Holdings provides equal employment opportunities to all employees and applicants without regard to race, color, religion, sex/gender, sexual orientation, national origin, age, disability, marital status, genetic information and/or predisposing genetic characteristics, victim of domestic violence status, veteran status, or other protected class status.

This policy applies to all terms and conditions of employment, including, but not limited to, hiring, placement, promotion, termination, layoff, recall, transfer, leave of absence, compensation and training. The Company also prohibits retaliation against any employee who exercises his or her rights under applicable anti-discrimination laws. Notwithstanding the foregoing, the Company does give hiring preference to Seneca or Native individuals.

Veterans with expertise in these areas are highly encouraged to apply.