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Mid Level Php Developer Jobs in Illinois (NOW HIRING)

Mid-Level Test Engineer

South Roxana, IL · On-site

$87K - $157K/yr

As a Mid-Level Test Engineer, you will play a key role in ensuring the delivery of reliable, secure ... Familiarity with CI/CD tools including Jenkins, GitLab, Azure DevOps, or similar platforms.

Mid-Level Test Engineer

Dupo, IL · On-site

$87K - $157K/yr

As a Mid-Level Test Engineer, you will play a key role in ensuring the delivery of reliable, secure ... Familiarity with CI/CD tools including Jenkins, GitLab, Azure DevOps, or similar platforms.

Mid-Level Test Engineer

Edwardsville, IL · On-site

$87K - $157K/yr

As a Mid-Level Test Engineer, you will play a key role in ensuring the delivery of reliable, secure ... Familiarity with CI/CD tools including Jenkins, GitLab, Azure DevOps, or similar platforms.

Mid-Level Test Engineer

Venice, IL · On-site

$87K - $157K/yr

As a Mid-Level Test Engineer, you will play a key role in ensuring the delivery of reliable, secure ... Familiarity with CI/CD tools including Jenkins, GitLab, Azure DevOps, or similar platforms.

Mid-Level Test Engineer

Belleville, IL · On-site

$87K - $157K/yr

As a Mid-Level Test Engineer, you will play a key role in ensuring the delivery of reliable, secure ... Familiarity with CI/CD tools including Jenkins, GitLab, Azure DevOps, or similar platforms.

Mid-Level Test Engineer

Granite City, IL · On-site

$87K - $157K/yr

As a Mid-Level Test Engineer, you will play a key role in ensuring the delivery of reliable, secure ... Familiarity with CI/CD tools including Jenkins, GitLab, Azure DevOps, or similar platforms.

As a Mid-Level Test Engineer, you will play a key role in ensuring the delivery of reliable, secure ... Familiarity with CI/CD tools including Jenkins, GitLab, Azure DevOps, or similar platforms.

Mid-Level Test Engineer

Caseyville, IL · On-site

$87K - $157K/yr

As a Mid-Level Test Engineer, you will play a key role in ensuring the delivery of reliable, secure ... Familiarity with CI/CD tools including Jenkins, GitLab, Azure DevOps, or similar platforms.

What You'll Be Owning GRVTY is seeking a Mid-Level Systems Engineer with a TS/SCI + Poly clearance ... DevOps roles. * CI/CD Knowledge: Proven experience configuring CI/CD pipelines and automated ...

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Mid-Level Software Engineer

Columbia, IL · On-site

$87K - $157K/yr

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Mid-Level Software Engineer

Hartford, IL · On-site

$87K - $157K/yr

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program ... Certifications such as AWS Certified Developer, Security+, SAFe Practitioner or similar. #Chinook ...

Showing results 21-40

Mid Level Php Developer information

See Illinois salary details

$36.8K

$98.8K

$144.4K

How much do mid level php developer jobs pay per year?

As of Aug 9, 2026, the average yearly pay for mid level php developer in Illinois is $98,845.00, according to ZipRecruiter salary data. Most workers in this role earn between $80,400.00 and $111,900.00 per year, depending on experience, location, and employer.

What is a mid level PHP developer?

Mid Level PHP Developers are software professionals who have a few years of experience working with PHP, a popular server-side scripting language used primarily for web development. They are typically responsible for writing, testing, and maintaining code, as well as collaborating with teams to develop dynamic websites and web applications. Mid level developers are expected to have a solid understanding of PHP frameworks, databases, and web technologies, and can work independently on moderately complex tasks while also mentoring junior team members. Their role bridges the gap between junior and senior developers, allowing them to take on more responsibility and contribute to project planning and architecture.

What is the difference between Mid Level Php Developer vs Junior Php Developer?

AspectMid Level Php DeveloperJunior Php Developer
Experience2-4 years of experience0-1 year of experience
SkillsProficient in PHP, frameworks, basic database managementBasic PHP knowledge, learning frameworks
ResponsibilitiesDeveloping features, troubleshooting, code reviewsAssisting in coding, learning project workflows
Work EnvironmentCollaborative teams, project-based tasksSupervised tasks, entry-level projects

The Mid Level Php Developer typically has more experience and handles more complex tasks compared to a Junior Php Developer. They are responsible for developing features, troubleshooting, and participating in code reviews, whereas Junior Php Developers focus on learning, assisting with basic coding, and gaining industry experience. The roles differ mainly in skill level, responsibility, and independence within the development team.

What are the key skills and qualifications needed to thrive as a mid level PHP developer?

A Mid Level PHP Developer should have a solid understanding of PHP programming, web development fundamentals, and experience with frameworks like Laravel or Symfony, typically supported by a relevant degree or equivalent experience. Familiarity with databases (such as MySQL), version control systems (like Git), and tools for debugging and testing is highly valued, along with knowledge of RESTful APIs. Strong problem-solving skills, attention to detail, and effective communication are important soft skills for collaborating within development teams and delivering robust solutions. These abilities ensure the developer can efficiently build scalable applications, troubleshoot issues, and contribute to successful project outcomes.

What are some common challenges mid level PHP developers face when working on legacy codebases?

Mid Level PHP Developers often encounter challenges when working with legacy code, such as outdated frameworks, inconsistent coding standards, and limited documentation. These issues can make it difficult to implement new features or fix bugs efficiently, requiring developers to spend extra time understanding existing logic. Collaboration with senior developers and open communication with the team are critical to navigating these challenges and promoting gradual codebase improvements. Additionally, it's important to balance the need for refactoring with ongoing project deadlines.
What are the most commonly searched types of Php Developer jobs in Illinois? The most popular types of Php Developer jobs in Illinois are:
What job categories do people searching Mid Level Php Developer jobs in Illinois look for? The top searched job categories for Mid Level Php Developer jobs in Illinois are:
What cities in Illinois are hiring for Mid Level Php Developer jobs? Cities in Illinois with the most Mid Level Php Developer job openings:
Infographic showing various Mid Level Php Developer job openings in Illinois as of July 2026, with employment types broken down into 68% Full Time, 20% Part Time, 4% Temporary, and 8% Contract. Highlights an 92% Physical, 3% Hybrid, and 5% Remote job distribution, with an average salary of $98,845 per year, or $47.5 per hour.

Mid-Level Test Engineer

Leidos

South Roxana, IL • On-site

$87K - $157K/yr

Full-time

Medical, Retirement, PTO

Posted 18 days ago


Leidos rating

8.3

Company rating: 8.3 out of 10

Based on 151 frontline employees who took The Breakroom Quiz

77th of 485 rated business services


Job description

Description

Job Description:

Are you passionate about delivering high-quality software that directly supports our nation’s security? Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook Program supporting an Intelligence Community customer. This is an opportunity to work alongside talented engineers, software developers, product managers, and mission experts to build innovative geospatial intelligence capabilities that enable critical national security missions.

If you’re energized by solving complex technical challenges, championing quality throughout the software development lifecycle, and driving continuous improvement in an Agile environment, we’d like to hear from you.

As a Mid-Level Test Engineer, you will play a key role in ensuring the delivery of reliable, secure, and high-performing software solutions. You’ll work as an integral member of a cross-functional Agile Scrum Team, developing and executing comprehensive test strategies that support rapid, iterative delivery while maintaining exceptional quality standards.

This role is ideal for someone who thrives in a collaborative DevSecOps environment and enjoys automating testing, and improving processes.

Position may be performed in the following locations below.  Please note Gaithersburg, MD is the program’s primary work location.

  • Gaithersburg, MD
  • Alexandria, VA
  • Chantilly, VA
  • Englewood, CO
  • St. Louis, MO
  • Tucson, AZ 
Clearance Level Required:

Active Top Secret/SCI with the ability to successfully pass a Polygraph examination.

Primary Responsibilities:

  • Lead planning, design, development, and execution of comprehensive test strategies across multiple Agile sprints.
  • Design, develop, and maintain automated and manual test cases for new and existing capabilities.
  • Collaborate daily with software engineers, product managers, system engineers, and Scrum Masters to define acceptance criteria and ensure quality is built into every release.
  • Perform functional, integration, regression, system, and end-to-end testing.
  • Validate application performance, reliability, security, and usability.
  • Identify, document, prioritize, and track software defects through resolution.
  • Support Continuous Integration/Continuous Delivery (CI/CD) pipelines by integrating automated testing into deployment workflows.
  • Analyze test results, communicate risks, and provide recommendations that improve software quality.
  • Contribute to continuous process improvement initiatives that enhance Agile team effectiveness.

Basic Qualifications:

  • US citizenship is required per contract.
  • Bachelor's degree in Computer Science, Engineering, Information Technology or related field and 4-8 years of prior relevant experience or Master’s with 2-6 years of prior relevant experience.
  • 6+ years of software testing or quality engineering experience.
  • Experience supporting Agile software development programs.
  • Demonstrated experience creating and executing manual and automated test plans.
  • Experience with automated testing tools such as Cypress, Playwright, or equivalent.
  • Experience with API testing using tools such as Postman or REST Assured.
  • Familiarity with CI/CD tools including Jenkins, GitLab, Azure DevOps, or similar platforms.
  • Experience with defect management tools such as Jira.
  • Ability to communicate results and issues to technical and non-technical customer stakeholders.

Preferred Qualifications:

  • Experience supporting DoD or Intelligence Community programs.
  • Familiarity with scripting languages including JavaScript, and Python.
  • Knowledge of containerized applications using Docker and Kubernetes.
  • Experience with performance testing tools such as JMeter or LoadRunner.
  • Familiarity with cloud technologies including AWS, Azure, or OpenShift
  • Knowledge of DevSecOps pipelines and automated quality assurance practices.
  • Experience working with modern software delivery environments.
  • Experience with geospatial applications or GEOINT data.
  • Certifications such as ISTQB, CASTP, CAST, CSTE, Security+, or similar.

#Chinook

#NSBA

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:July 21, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:Pay Range $87,100.00 - $157,450.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.


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About Leidos

Sourced by ZipRecruiter

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainable practices. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community.

Industry

It services

Company size

10,000+ Employees

Headquarters location

Reston, VA, US

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