Informix Developer

job summary:
Position Overview

We are seeking a technical specialist with deep expertise in legacy IBM/Informix platforms. This role is critical to supporting and modernizing our legacy infrastructure, specifically focusing on HP-UX and IBM AIX environments. You will be responsible for maintaining mission-critical ERP, supply chain, and warehouse management systems while driving technical performance optimizations.

location: Batavia, Illinois
job type: Contract
salary: $50 - 70 per hour
work hours: 9am to 5pm
education: Bachelors


responsibilities:

Key Responsibilities

• System Modernization & Design: Collaborate with cross-functional teams to design and implement robust solutions that bridge legacy logic with modern requirements (e.g., migrating Informix 4GL to Genero BDL ).

• Legacy Maintenance: Write and optimize clean, maintainable code in Informix 4GL , Genero BDL , and Unix Shell Scripting (Korn, Awk).

• Technical Troubleshooting: Resolve complex application issues and database performance bottlenecks using utilities like oncheck and set explain .

• Deployment & Testing: Lead integration, UAT, and performance testing activities to ensure high-quality deployments with minimal business disruption.

• Support & Documentation: Manage incidents and work orders escalated from the Service Desk, adhering to established SLAs, and maintain comprehensive technical documentation.

qualifications:
Required Technical Skills

Primary Languages: Expert-level Informix 4GL, Genero BDL, and SQL.

Secondary Languages: Proficiency in Java, Python, or Perl for integration and modern application support.

Database Management: Advanced knowledge of IBM Informix Dynamic Server (IDS); familiarity with SQL Server, Oracle, or Snowflake is a plus.

Operating Systems: Mastery of Unix-based systems (HP-UX, IBM AIX, Linux) and Windows environments.

Integrations: Understanding of EDI (810, 820), XML, and API integration (RESTful/SOAP).

Version Control: Hands-on experience with Git, GitHub, or GitLab.

Preferred Domain Knowledge

Experience with ERP Supply Chain concepts: Order creation, Pick-Pack-Ship, Invoicing, and Bill of Materials (BOM).

Familiarity with Warehouse Management Systems (WMS) and manufacturing workflows.

Candidate Requirements

Technical Expertise: Minimum 5 years of experience on the Informix legacy platform (specifically 4GL).

Domain Knowledge: Strong business understanding of Supply Chain workflows and operations.

Technical Environment: Proficiency in Unix/Linux and API development.

Soft Skills: Exceptional communication skills to effectively collaborate with and guide offshore team members.

Equal Opportunity Employer: Race, Color, Religion, Sex, Sexual Orientation, Gender Identity, National Origin, Age, Genetic Information, Disability, Protected Veteran Status, or any other legally protected group status.

At Randstad Digital, we welcome people of all abilities and want to ensure that our hiring and interview process meets the needs of all applicants. If you require a reasonable accommodation to make your application or interview experience a great one, please contact [email protected].


Pay offered to a successful candidate will be based on several factors including the candidate's education, work experience, work location, specific job duties, certifications, etc. In addition, Randstad Digital offers a comprehensive benefits package, including: medical, prescription, dental, vision, AD&D, and life insurance offerings, short-term disability, and a 401K plan (all benefits are based on eligibility).

This posting is open for thirty (30) days.