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Support Developer Jobs in Belleville, IL (NOW HIRING)

Neshent Technologies

Mainframe Support Engineer

Venice, IL · On-site

$46.75 - $60.25/hr

We are seeking a Mainframe Support Engineer to provide L2/L3 production support for enterprise mainframe applications. The ideal candidate will have strong experience with COBOL, DB2, VSAM, Batch ...

Neshent Technologies

Mainframe Support Engineer

Columbia, IL · On-site

$48 - $61.75/hr

We are seeking a Mainframe Support Engineer to provide L2/L3 production support for enterprise mainframe applications. The ideal candidate will have strong experience with COBOL, DB2, VSAM, Batch ...

Neshent Technologies

Mainframe Support Engineer

Oakville, MO · On-site

$46.25 - $59.50/hr

We are seeking a Mainframe Support Engineer to provide L2/L3 production support for enterprise mainframe applications. The ideal candidate will have strong experience with COBOL, DB2, VSAM, Batch ...

Neshent Technologies

Mainframe Support Engineer

Ferguson, MO · On-site

$48 - $61.75/hr

We are seeking a Mainframe Support Engineer to provide L2/L3 production support for enterprise mainframe applications. The ideal candidate will have strong experience with COBOL, DB2, VSAM, Batch ...

Neshent Technologies

Mainframe Support Engineer

Mitchell, IL · On-site

$45.75 - $59/hr

We are seeking a Mainframe Support Engineer to provide L2/L3 production support for enterprise mainframe applications. The ideal candidate will have strong experience with COBOL, DB2, VSAM, Batch ...

Neshent Technologies

Mainframe Support Engineer

Overland, MO · On-site

$45.75 - $58.75/hr

We are seeking a Mainframe Support Engineer to provide L2/L3 production support for enterprise mainframe applications. The ideal candidate will have strong experience with COBOL, DB2, VSAM, Batch ...

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Support Developer information

See Belleville, IL salary details

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How much do support developer jobs pay per hour?

As of Aug 18, 2026, the average hourly pay for support developer in Belleville, IL is $65.38, according to ZipRecruiter salary data. Most workers in this role earn between $44.38 and $77.74 per hour, depending on experience, location, and employer.

What is a support developer?

A Support Developer is a software professional who assists customers or internal teams by troubleshooting and resolving technical issues related to software products or services. They often work closely with users to understand problems, analyze software behavior, and provide fixes or guidance. Support Developers may also collaborate with engineering teams to escalate and resolve complex bugs or feature requests. Their role bridges the gap between users and development, ensuring smooth software operation and customer satisfaction.

How does a support developer typically collaborate with other teams to resolve customer issues quickly?

Support Developers work closely with both the customer support and core engineering teams to address technical issues reported by clients. They often act as a bridge, translating customer feedback into actionable bug reports or feature requests, and may participate in daily stand-ups or cross-team meetings to prioritize urgent tickets. Effective communication and a problem-solving mindset are key, as Support Developers must balance customer needs with internal development timelines. This collaborative environment not only helps resolve issues faster but also provides opportunities to learn from various technical experts within the organization.

What are the key skills and qualifications needed to thrive as a support developer, and why are they important?

To thrive as a Support Developer, you need a solid understanding of programming languages, debugging techniques, and problem-solving skills, often backed by a degree in computer science or a related field. Familiarity with ticketing systems, version control tools like Git, and experience with databases or APIs are typically required. Strong communication, patience, and teamwork are vital soft skills for collaborating with users and internal teams. These skills are crucial for efficiently resolving technical issues, maintaining software reliability, and ensuring high customer satisfaction.

What does a support developer support engineer do?

A support developer or support engineer assists users by diagnosing and resolving technical issues related to software or hardware products. They often troubleshoot problems, provide solutions, and may collaborate with development teams to improve product functionality, using tools like ticketing systems and technical documentation.

What cities near Belleville, IL are hiring for Support Developer jobs?

Cities near Belleville, IL with the most Support Developer job openings:

Support Developer jobs near you
Infographic showing various Support Developer job openings in Belleville, IL as of June 2026, with employment types broken down into 30% Full Time, 64% Part Time, 2% Temporary, and 4% Nights. Highlights an 84% Physical, 3% Hybrid, and 13% Remote job distribution, with an average salary of $135,982 per year, or $65.4 per hour.

Mainframe Support Engineer

Neshent Technologies

Venice, IL • On-site

$46.75 - $60.25/hr

Full-time

This job post has expired today. Applications are no longer accepted.

Job description

We are seeking a Mainframe Support Engineer to provide L2/L3 production support for enterprise mainframe applications. The ideal candidate will have strong experience with COBOL, DB2, VSAM, Batch processing, and production support operations. This role involves incident management, troubleshooting, batch monitoring, data analysis, and collaboration with cross-functional teams to ensure system stability and business continuity.

Primary Responsibilities
  • Provide L2/L3 production support for mainframe applications and services.
  • Investigate, troubleshoot, and resolve production incidents within defined SLAs.
  • Perform incident triage, root cause analysis, and implement timely resolutions.
  • Monitor and support batch jobs, identify job abends, and ensure successful batch processing.
  • Execute operational runbooks and standard operating procedures (SOPs).
  • Perform DB2 data analysis, reporting, and troubleshooting.
  • Collaborate with business users and technical teams to resolve production issues.
  • Maintain operational documentation, knowledge base articles, and support procedures.
  • Participate in incident communication, status updates, and post-incident reviews.
  • Support workforce management, time reporting, and overtime equalization processes where applicable.
  • Identify opportunities to improve operational efficiency and system reliability.
Required Skills & Qualifications
  • 5+ years of experience in Mainframe Production Support.
  • Strong hands-on experience with COBOL, DB2, VSAM, and Batch Processing.
  • Experience handling L2/L3 production support, incident management, and problem resolution.
  • Strong knowledge of batch scheduling, monitoring, and job abend analysis.
  • Experience with DB2 queries, data analysis, and report generation.
  • Understanding of production support processes, SLA management, and operational procedures.
  • Exposure to C# and VB.NET applications is desirable.
  • Excellent troubleshooting, analytical, and problem-solving skills.
  • Strong communication skills with the ability to work effectively with business and technical stakeholders.
  • Ability to work independently in a fast-paced production support environment.
Preferred Qualifications
  • Experience supporting workforce management or time reporting applications.
  • Knowledge of ITIL-based Incident and Problem Management processes.
  • Experience with production monitoring and operational support tools.
  • Ability to support after-hours or on-call production activities when required.

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