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Mid Level Developer Jobs in Granite City, IL (NOW HIRING)

Leidos

Mid-Level Test Engineer

Valley Park, MO · 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.

Leidos

Mid-Level Test Engineer

Hartford, 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.

Leidos

Mid-Level Test Engineer

Hazelwood, MO · 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.

Leidos

Mid-Level Test Engineer

East Saint Louis, 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.

Leidos

Mid-Level Test Engineer

Earth City, MO · 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.

Leidos

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.

Leidos

Mid-Level Test Engineer

Maryland Heights, MO · 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.

Leidos

Mid-Level Test Engineer

Saint Louis, MO

$87K - $157K/yr

Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook Program supporting an ... Familiarity with CI/CD tools including Jenkins, GitLab, Azure DevOps, or similar platforms.

Leidos

Mid-Level Test Engineer

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.

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All JobsMid Level Developer JobsMid Level Developer Jobs in Granite City, IL

Mid Level Developer information

See Granite City, IL salary details

$10.5K

$82.6K

$107.7K

How much do mid level developer jobs pay per year?

As of Aug 16, 2026, the average yearly pay for mid level developer in Granite City, IL is $82,564.00, according to ZipRecruiter salary data. Most workers in this role earn between $57,200.00 and $102,400.00 per year, depending on experience, location, and employer.

What is a mid level developer?

Mid Level Developers are software professionals who have gained several years of experience beyond entry-level positions and are proficient in coding, debugging, and collaborating on projects. They possess a strong understanding of programming languages, frameworks, and software development processes. Mid Level Developers often take on more responsibility than junior developers, such as mentoring newer team members, contributing to architectural decisions, and ensuring code quality. They are expected to work independently on tasks, communicate effectively with team members, and deliver reliable solutions to complex problems.

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

AspectMid Level DeveloperJunior Developer
Experience2-4 years0-2 years
SkillsProficient in multiple programming languages, problem-solving, and project contributionBasic coding skills, learning foundational concepts
ResponsibilitiesDeveloping features, debugging, collaborating on projectsAssisting in tasks, learning codebases, under supervision
Work EnvironmentIndependent work, team collaboration, project ownership

The main difference between a Mid Level Developer and a Junior Developer lies in experience, skill proficiency, and responsibilities. Mid Level Developers have more experience, can handle complex tasks independently, and contribute significantly to projects, whereas Junior Developers are still learning foundational skills and typically work under supervision.

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

To thrive as a Mid Level Developer, you need solid programming skills in languages such as Java, Python, or JavaScript, along with a relevant degree or equivalent experience. Familiarity with version control systems like Git, integrated development environments (IDEs), and frameworks such as React or Spring Boot is typically required. Effective problem-solving, teamwork, and strong communication skills help you collaborate and adapt to project needs. These abilities ensure you can deliver reliable code, work smoothly with colleagues, and contribute to successful software projects.

What opportunities for professional growth can a mid level developer typically expect within a software development team?

As a Mid Level Developer, you can expect to take on more complex projects, mentor junior team members, and gradually assume greater ownership of features or modules. Many organizations support growth through peer code reviews, access to learning resources, and the chance to participate in architectural discussions. Advancement paths often include moving toward senior developer roles, technical leads, or specializing in areas like DevOps or security, depending on your interests and the company's needs.

What are popular job titles related to Mid Level Developer jobs in Granite City, IL?

For Mid Level Developer jobs in Granite City, IL, the most frequently searched job titles are:

What cities near Granite City, IL are hiring for Mid Level Developer jobs?

Cities near Granite City, IL with the most Mid Level Developer job openings:

Mid Level Developer jobs near you
Infographic showing various Mid Level Developer job openings in Granite City, IL as of August 2026, with employment types broken down into 76% Full Time, 17% Part Time, and 7% Contract. Highlights an 93% Physical, 3% Hybrid, and 4% Remote job distribution, with an average salary of $82,564 per year, or $39.7 per hour.

Salesforce Mid-Level Developer

NeoDym Technologies

Creve Coeur, MO • On-site

$58 - $60/hr

Contractor

Re-posted 18 days ago

Job description

Job Code :- 6896-2-12/1
Hi Team,
Please get the qualified resources ASAP.
 
Salesforce Mid-Level Developer
ONSITE- 5 Days
Office location- 4 Cityplace Drive Creve Coeur, Missouri 63141
Contract- 12 Months
Interview - 2 Rounds
 
 
Key Responsibilities
• Collaborate with business partners, product owners, and IT teams to understand requirements and translate them into scalable Salesforce solutions.
• Develop, customize, and maintain Salesforce applications using Apex, Lightning Web Components (LWC), Visualforce, SOQL, and Flow.
• Support and enhance Salesforce Marketing Cloud, including integration with core Salesforce, data extensions, contact management, and journey-related automation.
• Integrate Salesforce with external systems using REST/SOAP APIs, middleware, and platform events.
• Ensure all development follows Salesforce best practices, coding standards, and security guidelines.
• Participate in Salesforce Release Management and Application Lifecycle Management (ALM).
• Optimize and enhance existing Salesforce features by analyzing current processes and identifying improvement opportunities.
• Build responsive and user-friendly Lightning pages and components with an emphasis on clean UX.
• Utilize standard Salesforce tools and development environments such as VS Code, SFDX CLI, Git, DevOps Center, and browser developer tools.
• Maintain code consistency, perform peer code reviews, and uphold quality standards for performance, security, and maintainability.
• Assist with system monitoring, troubleshooting, and performance tuning across Salesforce orgs.
• Ensure changes are properly tracked and version controlled.
• Write and maintain unit tests to meet required code coverage and ensure long-term stability.
• Support data management activities, including data modeling, data loads, cleansing, and maintaining relational data structures.
• Document technical designs, solutions, and processes clearly and thoroughly.
• Collaborate with admins to support configuration needs and ensure smooth operations.
• Stay updated with Salesforce features, releases, and emerging platform capabilities.
________________________________________
Qualifications, Education & Experience
• 9-10 years of Salesforce development experience, including Apex, LWC, Visualforce, SOQL, and integrations.
• Salesforce Admin experience (configuration, automation tools, security model, data management).
• Experience working with enterprise-level integrations using REST/SOAP APIs.
• Experience working with or supporting Salesforce Marketing Cloud (Audience Builder, Journey Builder, Automation Studio, contact/data management).
• Strong understanding of Salesforce architecture, governor limits, and best practices.
• Proficiency with TFS/Git or other version control systems.
• Solid understanding of object-oriented programming principles.
• Strong analytical and debugging skills with the ability to solve complex technical problems.
• Ability to translate business requirements into well-designed technical solutions.
• Strong understanding of Salesforce security, profiles, permission sets, and data protection (PII).
• Experience with DevOps and CI/CD pipelines is a plus.
• Excellent communication and documentation skills.
• Bachelor’s degree in computer science, Information Systems, Engineering, or equivalent experience.
________________________________________
Preferred / Bonus Skills
• Experience with Experience Cloud, Marketing Cloud.
• Salesforce certifications (Platform Developer / Administrator).
• Background working with relational databases and data modeling.
• Strong interest in user experience and modern UI design.