Software Developer (Legacy Systems & Modernization)

Ultimate Staffing; Pontiac (MI); On-site; USD 80,000 - 120,000; Full time

Job summary

A staffing agency in Pontiac, MI, is looking for a Software Developer to bridge the gap between legacy and modern systems. The ideal candidate should have strong expertise in BASIC, COBOL, Python, SQL, and Linux environments, and should thrive in solving complex problems related to both old and new technologies. This is a full-time position for mid-senior level candidates.

Qualifications

• Proficiency in BASIC, VB 6.0, COBOL, Python scripting, and SQL.
• Strong knowledge of Linux operating systems.
• Experience with API integration and modernization best practices.

Responsibilities

• Maintain and enhance applications written in BASIC, COBOL, and VB 6.0.
• Develop scripts and tools using Python in Linux environments.
• Participate in upgrades, refactoring, and integration projects.

Skills

BASIC

VB 6.0

COBOL

Python scripting

SQL

API integration

Linux OS

Tools

Git

Job description

Software Developer (Legacy Systems & Modernization)

Our client is seeking a skilled Software Developer who enjoys bridging the gap between legacy and modern systems. This is a hands‑on role maintaining applications written in BASIC, VB 6.0, and COBOL, while also contributing to modernization projects using Python, SQL, and API integration. If you thrive in Linux environments and enjoy solving complex problems across both old and new technologies, we'd love to talk with you.

Base pay range

$80,000.00/yr - $120,000.00/yr

Key Responsibilities

• Maintain and enhance applications written in BASIC, COBOL, and VB 6.0
• Develop scripts and tools using Python in Linux environments
• Build, consume, and document RESTful and SOAP APIs
• Write and optimize SQL queries across multiple databases
• Manage cron jobs, shell scripts, and automation tools in Linux
• Participate in upgrades, refactoring, and integration projects
• Troubleshoot production issues across legacy and modern systems

Required Skills & Experience

• Proficiency in:
  • BASIC, VB 6.0, QicBasic
  • COBOL (batch and/or transactional)
  • Python scripting
  • SQL (MySQL, PostgreSQL, MS SQL, or Oracle)
  • API integration (REST, JSON, XML)
• Strong working knowledge of Linux OS (Red Hat, CentOS, Debian, etc.)
• Comfortable working in command‑line and terminal environments
• Familiarity with legacy systems and modernization best practices

Preferred Qualifications

• Experience migrating or refactoring legacy codebases
• Knowledge of CI/CD pipelines and version control (Git)
• Familiarity with schedulers (cron, Control‑M)
• Understanding of secure API authentication (OAuth2, API keys)

All qualified applicants will receive consideration for employment without regard to race, color, national origin, age, ancestry, religion, sex, sexual orientation, gender identity, gender expression, marital status, disability, medical condition, genetic information, pregnancy, or military or veteran status. We consider all qualified applicants, including those with criminal histories, in a manner consistent with state and local laws, including the California Fair Chance Act, City of Los Angeles' Fair Chance Initiative for Hiring Ordinance, and Los Angeles County Fair Chance Ordinance. For unincorporated Los Angeles county, to the extent our customers require a background check for certain positions, the Company faces a significant risk to its business operations and business reputation unless a review of criminal history is conducted for those specific job positions.

Seniority level

Mid‑Senior level

Employment type

Full‑time

Job function

Information Technology