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Senior Software Engineer Jobs in Springfield, IL

Experience: 6+ years in software implementation or technical consulting, with at least 2 years of ... Senior Manager Footer Intuit provides a competitive compensation package with a strong pay for ...

You will sell top-tier Enterprise Output Management (EOM) software to Fortune 2000 companies using ... Collaborate with assigned technical pre-sales engineering personnel to understand the prospective ...

May interact with network service, software systems engineering, or applications development to ... Resolves basic/intermediate level problems while referring more complex problems to senior level ...

Showing results 41-60

Senior Software Engineer information

See Springfield, IL salary details

$74.8K

$142K

$190.3K

How much do senior software engineer jobs pay per year?

As of Aug 18, 2026, the average yearly pay for senior software engineer in Springfield, IL is $142,017.00, according to ZipRecruiter salary data. Most workers in this role earn between $121,400.00 and $160,100.00 per year, depending on experience, location, and employer.

What is a senior software engineer?

A senior software engineer designs, codes, tests, and maintains computer software. While these are your primary responsibilities as a senior software engineer, you may also have supervisory duties. These include overseeing a team of junior software engineers or developers. The senior software engineer title is sometimes used interchangeably with senior developer, and positions for both may share similar job duties and responsibilities. In general, software engineers are distinguished from developers in that software engineers apply engineering principles to software development.

What are the key skills and qualifications needed to thrive as a senior software engineer, and why are they important?

To thrive as a Senior Software Engineer, you need advanced programming skills, deep understanding of software architecture, and several years of experience in software development, often supported by a relevant degree. Familiarity with tools like Git, CI/CD pipelines, cloud platforms, and expertise in technologies such as Java, Python, or JavaScript are typically required. Leadership, problem-solving, and effective communication are crucial soft skills for mentoring teams and collaborating across departments. These skills ensure the delivery of robust, scalable solutions and drive successful project outcomes in complex technical environments.

What are some common challenges senior software engineers face when mentoring junior team members?

Senior Software Engineers often mentor junior colleagues, which can be incredibly rewarding but also presents challenges. Balancing mentorship with project deadlines can be demanding, as it requires strong time management and communication skills. Additionally, adapting explanations to different learning styles and levels of experience can be tricky. However, effective mentorship helps build a stronger team and can lead to enhanced leadership opportunities for the senior engineer.

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

AspectSenior Software EngineerSoftware Developer
CredentialsBachelor's or higher in CS or related field; experience often 5+ yearsBachelor's in CS or related field; entry to mid-level experience
Work EnvironmentDesigning complex systems, leading projects, mentoringWriting code, developing features, debugging
Industry UsageUsed across tech companies, startups, enterpriseCommon in software firms, startups, freelance work
Search & ComparisonOften compared for experience level, responsibilitiesCompared for entry-level to mid-level roles

The main difference between a Senior Software Engineer and a Software Developer lies in experience, responsibilities, and scope. Senior Software Engineers typically have more experience, lead projects, and mentor others, while Software Developers focus on coding and feature development. Both roles are essential in tech companies, but the Senior Software Engineer position involves higher-level planning and leadership.

What does a senior software engineer do?

A senior software engineer designs, develops, and maintains software applications, often leading projects and mentoring junior team members. They analyze requirements, write code, perform testing, and collaborate with cross-functional teams to ensure quality and efficiency. Proficiency in programming languages, problem-solving skills, and experience with development tools are essential for this role.

What are the most commonly searched types of Software Engineer jobs in Springfield, IL?

The most popular types of Software Engineer jobs in Springfield, IL are:

What are popular job titles related to Senior Software Engineer jobs in Springfield, IL?

For Senior Software Engineer jobs in Springfield, IL, the most frequently searched job titles are:

What job categories do people searching Senior Software Engineer jobs in Springfield, IL look for?

The top searched job categories for Senior Software Engineer jobs in Springfield, IL are:

What cities near Springfield, IL are hiring for Senior Software Engineer jobs?

Cities near Springfield, IL with the most Senior Software Engineer job openings:

Infographic showing various Senior Software Engineer job openings in Springfield, IL as of August 2026, with employment types broken down into 1% As Needed, 85% Full Time, 9% Part Time, and 5% Contract. Highlights an 89% Physical, 3% Hybrid, and 8% Remote job distribution, with an average salary of $142,017 per year, or $68.3 per hour.

Z/OS Mainframe COBOL Application Developer

State of Illinois

Springfield, IL • On-site

$79K - $146K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 24 days ago


State Of Illinois rating

7.9

Company rating: 7.9 out of 10

Based on 74 frontline employees who took The Breakroom Quiz

15th of 50 rated states


Job description

Job Requisition ID: 57520 
Opening Date:
07/24/2026
Closing Date:
08/14/2026
Agency:
Illinois Office of Comptroller
Class Title: 
SENIOR PUBLIC SERVICE ADMINISTR - 92220 
Salary:
$79,530.00 - $146,824.70/year (salary commensurate with education and experience)
Job Type:
Salaried
Category: 
Full Time 
County:
Sangamon
Number of Vacancies:
1
Merit Comp Code:
IOC

***A RESUME IS REQUIRED FOR THIS JOB POSTING***

All applicants who want to be considered for this position MUST apply electronically through the illinois.jobs2web.com website. State of Illinois employees should click the link near the top left to apply through the SuccessFactors employee career portal.

Applications submitted via email or any paper manner (mail, fax, hand delivery) will not be considered.

 

 

Why Work for Illinois?

Working with the State of Illinois is a testament to the values of compassion, equity, and dedication that define our state. Whether you're helping to improve schools, protect our natural resources, or support families in need, you're part of something bigger-something that touches the lives of every person who calls Illinois home.

No matter what state career you're looking for, we offer jobs that fit your life and your schedule-flexible jobs that provide the gold standard of benefits. Our employees can take advantage of various avenues to advance their careers and realize their dreams. Our top-tier benefits and great retirement packages can help you build a rewarding career and lasting future with the State of Illinois.

Position Overview

COME JOIN A TRANSFORMATIVE TEAM, with a record of proven, positive impact to the State of Illinois.

The Illinois Office of the Comptroller is seeking applicants for the position of Senior Public Service Administrator - Z/OS Mainframe COBOL Application Developer.

The Comptroller is the chief fiscal control officer for the Illinois government, charged by the Constitution with maintaining the state's central fiscal accounts and ordering payments into and out of the appropriate funds. The office processes more than 16 million transactions annually and serves as a "fiscal watchdog" to ensure that all state payments meet the requirements of the law. The Comptroller's office provides meaningful and timely fiscal information to help state policymakers adopt effective policies. The office continually seeks new ways to improve how it serves the public. The Comptroller has updated and streamlined the Comptroller's website and has led the process of updating the state's payroll and accounting systems. Comptroller Mendoza is committed to running the Office of Comptroller as a financial watchdog for the interest of Illinois citizens and to installing the most modern and transparent systems to make the state's financial information available to all. 

Major Function

Under administrative direction of the Deputy Chief Information Officer, the Z/OS Mainframe COBOL Developer uses strong technical expertise and excellent problem-solving skills in mainframe development and operations to analyze, design, develop, code, test and debug COBOL applications on the Z/OS platform. The incumbent will bring deep knowledge of COBOL, JCL, VSAM, DB2, and CICS to collaborate with team members, business analysts, and stakeholders to gather requirements and deliver high-quality solutions. In addition to traditional mainframe development, this role will also engage with emerging technologies, including Generative AI and IBM Watson X for Z, to modernize legacy systems and contribute to building a knowledge-driven environment.

Job Responsibilities
  • Analyze, design, develop, code, test, and debug COBOL applications on the IBM Z/OS platform.

    • Perform root cause analysis, system debugging, and implement solutions to complex technical issues.
  • Work with MVS JCL, PROCS, VSAM, IDCAMS, DB2, SQL, and CICS in day-to-day development and maintenance activities.

  • Learn and apply IBM Watson X for Z capabilities for mainframe modernization and optimization. Work with Generative AI tools to enhance development productivity, documentation, and knowledge transfer.

  • Develop effective prompts for Large Language Models (LLMs) to support system analysis, code refactoring, and modernization.

  • Assist in the creation, maintenance, and enhancement of a Mainframe Wiki Knowledgebase within SharePoint to preserve and share institutional knowledge.

  • Performs other duties as required or assigned which are reasonable within the scope of the duties above.

Minimum Requirements
  • Requires knowledge, skill and mental development equivalent to completion of four (4) years of college, preferably with courses in management or design of information systems, Computer Science, Information Systems, or a related field.

  • Requires prior experience equivalent to four (4) years of progressively responsible hands-on experience in a public or business organization including web application administration and thorough knowledge of COBOL programming on IBM Z/OS, MVS JCL and PROCS, VSAM, IDCAMS, DB2 with SQL, CICS online applications, and TSO, ISPF, SDSF.

Preferred Skills
  • Prefers knowledge of Payroll, Accounting & Financial Systems.

  • Prefers exposure to or interest in Generative AI tools in a development environment.

  • Prefers familiarity with LLM prompting techniques to improve code analysis and documentation.

  • Prefers previous experience with IBM Watson X for Z, or the willingness to learn.

  • Prefers knowledge management experience (e.g., contributing to a SharePoint Wiki Knowledgebase).

Knowledge, Skills, and Abilities
  • Requires a thorough knowledge of business administration principles, modern management practices and effective communication techniques.
  • Requires contribution to a collaborative, team-oriented work environment with clear communication and knowledge sharing.
  • Requires knowledge of office programs and service objectives, activities and operational systems.
  • Requires knowledge of office policies and procedures.
  • Requires ability to analyze administrative programs and adopt an effective course of action.
  • Requires ability to develop, install and evaluate new and revised methods, procedures and performance standards.
  • Requires ability to exercise judgement and discretion in developing, implementing, and interpreting departmental policies and procedures.
  • Requires ability to develop and maintain satisfactory working relationships with office officials and outside organization representatives and to deal effectively with controversial problems.
  • Requires ability to exercise sound judgement in analyzing, evaluating, and solving problems of a difficult procedural, organizational, administrative, and technical nature.
  • Requires ability to devise solutions to difficult and technical problems, many of which may be of a precedent-establishing and research nature.
  • Requires ability to judge project alternatives in terms of cost effectiveness.
  • Requires working knowledge of personal computers and software.
  • May require ability to train a professional staff.
  • May require ability to plan, coordinate and review the activities of personnel to meet defined goals and schedules.

* with or without reasonable accommodation.

Benefits

This position is eligible to be a member of the State of Illinois Group Insurance program which includes health, dental, vision, and life insurance coverage options. Additionally, this position will annually accrue 12 paid sick days, a minimum of 12 paid vacation days, 4 paid personal days, and be afforded 14 paid state holidays, prorated based on start date. 

Equal Employment and Commitment to Diversity

The Illinois Office of Comptroller provides equal employment opportunities to all employees and applicants for employment without regard to race, color, creed, ancestry, national origin, citizenship, sex or gender, gender identity or expression, sexual orientation, marital status, religion, age, disability, genetic information, service in the military, or any other characteristic protected by applicable federal, state, or local laws and ordinances. Equal employment opportunity applies to all terms and conditions of employment, including hiring, placement, promotion, termination, layoff, recall, transfer, leave of absence, compensation, and training. The Illinois Office of Comptroller is committed to the fair and equal employment of individuals with disabilities under the ADA. It is the Illinois Office of Comptroller's policy to provide reasonable accommodation to qualified individuals with disabilities unless the accommodation would impose an undue hardship on the company. The Illinois Office of Comptroller prohibits any harassment of, or discriminatory treatment of, employees or applicants based on a disability or because an employee has requested reasonable accommodation. 

The Illinois Office of Comptroller is committed to creating and maintaining a workplace in which all employees have an opportunity to participate and contribute to the success of the agency and are valued for their skills, experience, and unique perspectives. This commitment is embodied in agency policy and organizational culture. 

Work Hours: Monday - Friday, 37.5 hours/week
Headquarter Location: 325 W Adams St, Springfield, Illinois, 62704
Work County: Sangamon
Agency Contact: Kammy Ferrigno
Phone #: 217-782-6085
Posting Group: Science, Technology, Engineering & Mathematics

APPLICATION INSTRUCTIONS

Use the "Apply" button at the top right or bottom right of this posting to begin the application process.

If you are not already signed in, you will be prompted to do so. 

State employees should sign in to the career portal for State of Illinois employees - a link is available at the top left of the Illinois.jobs2web.com homepage in the blue ribbon. 

Non-State employees should log in on the using the "View Profile" link in the top right of the Illinois.jobs2web.com homepage in the blue ribbon.  If you have never before signed in, you will be prompted to create an account.

If you have questions about how to apply, please see the following resources:

State employees: Log in to the career portal for State employees and review the Internal Candidate Application Job Aid

Non-State employees: on Illinois.jobs2web.com - click "Application Procedures" in the footer of every page of the website.

The main form of communication will be through email. Please check your "junk mail", "spam", or "other" folder for communication(s) regarding any submitted application(s). You may receive emails from the following addresses:

  • donotreply@SIL-P1.ns2cloud.com
  • systems@SIL-P1.ns2cloud.com

What State Of Illinois employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom


State of Illinois logo

About State of Illinois

Sourced by ZipRecruiter

The State of Illinois is not a traditional company, but rather a governmental entity encompassing diverse agencies and departments that serve the constituents of Illinois. Based in Illinois, United States, this governmental body communicates with its citizens through the official website illinois.gov. The website is a one-stop resource for Illinois residents to access information about the state's services, including education, healthcare, transportation, and public safety, among others.

Company size

11 - 50 Employees

Headquarters location

Springfield, IL, US

Year founded

2009

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