Available to hire
I’m Sean O’Connor, a Senior Software Developer focused on the architecture and maintenance of complex, cross-platform backend systems. 30+ years’ experience delivering reliable, scalable software, modernizing legacy platforms, and solving deep technical problems in production environments.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Beginner
Beginner
Beginner
Beginner
Language
English
Fluent
Work Experience
Independent Software Developer at Self Employed
September 1, 2025 - PresentDesigning and building web and mobile applications from concept through deployment. Implementing backend services, authentication, and cloud infrastructure. Providing consulting on enhancements to existing platforms, performance improvements, and new features for clients across multiple engagements.
Senior Software Developer at Pharos Systems
February 1, 2002 - September 1, 2024Supported a system used by 5,500+ organizations with 99.99% uptime. Designed and delivered major features across Pharos Cloud Print, Blueprint, and Uniprint, owning components from research and architecture through implementation, documentation, and support. Built a WCF-based security layer designed to work out of the box across diverse customer environments. Led the redesign of the server installer, produced a more maintainable and resilient installation process. Developed an automated smoke test framework integrated into the build pipeline. Migrated source control and build systems, improving reliability and maintainability. Administered Jira and optimized agile workflows across multiple teams. Served as Team Lead and provided 3rd level support for complex customer issues in enterprise environments.
CTI Systems Engineer/Software Developer at ECONZ
August 1, 1998 - October 1, 2001Provided 3rd-level support and maintenance for Telecom’s national IVR services. Developed automation scripts (shell, AWK) for backups, DB maintenance, reporting, and engineer paging. Built a Win32 application to extract and visualize call-centre statistics from DB2 databases. Converted legacy Windows applications from 16-bit to 32-bit. Coordinated nationwide hardware/software rollouts with minimal downtime. Took ownership of a multi-threaded C++ business-rules server and promoted to Team Lead for the on-site ECONZ team (4–5 staff).
System Administrator/Helpdesk at Carters/Carter Holt Harvey
February 1, 1996 - July 1, 1998Supported PC, printer, and network issues across multiple branches. Developed a custom Windows device driver to resolve a retail-store security issue. Automated PC configuration for new-store rollouts using custom scripts. Built a web-based helpdesk ticketing and notification system.
Demonstrator/Lab Supervisor at University of Waikato
January 1, 1994 - January 1, 1995Provided tutoring and supervision for labs and demonstrations, mentoring students in practical programming and software development tasks.
Assistant Programmer at Alphacom
January 1, 1993 - January 1, 1994Assisted in software development tasks and contributed to project components during early career.
Education
BCMS (Hons) at University of Waikato
January 1, 1992 - January 1, 1995Qualifications
Industry Experience
Software & Internet, Professional Services, Media & Entertainment, Telecommunications
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Beginner
Beginner
Beginner
Beginner
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