Chris M.
Senior PowerBuilder Developer & Systems Analyst
Specialized in Systems Analysis and part-time maintenance (up to 20-30 hours/week) for legacy Powerbuilder / Oracle / Sybase / MS SQL Server environments. Productive on Day One. With over 20 years of specialized experience in PowerBuilder (v6.5 through v2022) and complex database environments, I provide the rare expertise needed to maintain, debug, and enhance mission-critical legacy applications. I specialize in the "plumbing" of legacy apps—ensuring stable SQLCA.DBMS connectivity and data integrity during system transitions. I possess the unique ability to step through established "black box" applications with little to no training, providing immediate value. Beyond coding, I bridge the gap between legacy systems and future goals by documenting existing functionality for developers, business analysts, and stakeholders to assist in eventual modernization strategies. Core Competencies: PowerBuilder Mastery: Expert work with PB versions 6.5, 8, 12.5, and 2016+, including the DIAMOND® Enterprise System and PFC frameworks. Database Expertise: Senior-level SQL, SQLCA.DBMS configuration, and Stored Procedure development for Oracle (Legacy to 19c), Sybase (v10, v12), and SQL Server. Modernized Documentation: I leverage modern AI-assisted tools to accelerate the analysis and summarization of legacy PowerScript logic, ensuring every finding is manually verified for technical accuracy. Industry Knowledge: Deep experience including Health Insurance (Diamond), Manufacturing, POS Systems, and Compliance Reporting. Whether you need urgent bug fixes, long-term system maintenance, or a technical guide to assist your modernization strategy, I am at ease collaborating with DBAs and Project Managers to deliver stable, documented results. Whether you need urgent bug fixes, long-term system maintenance, or a technical guide to assist your modernization strategy, I am at ease collaborating with DBAs and Project Managers to deliver stable, documented results.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $119
Billed in all: $260,405$260k
$119 in the last 6 months
Earnings, last 30 days
Skill rankings: #1 in 1 skill of 7
Rarest: top 24% in Stored Procedure Development, of 72. Ranked by MRR among everyone on Upwork with the skill.
- Sybase Programming3 freelancers · 🇺🇸 #1Top 33%🇺🇸#1 of 2
- #6PowerBuilder23 freelancers · 🇺🇸 #3Top 26%🇺🇸#3 of 6
- #17Stored Procedure Development72 freelancers · 🇺🇸 #2Top 24%🇺🇸#2 of 13
- #62Database Integration123 freelancers · 🇺🇸 #12Top 50%🇺🇸#12 of 20
- #67Software Maintenance143 freelancers · 🇺🇸 #7Top 47%🇺🇸#7 of 15
- #71System Analysis219 freelancers · 🇺🇸 #12Top 32%🇺🇸#12 of 38
- #4,009SQL12,903 freelancers · 🇺🇸 #598Top 31%🇺🇸#598 of 1,997