Ezequiel Tolnay

Software Engineer

Tolnay IT Services•  October 2023 - Present•  No fixed location

Software Engineer and Database expert for consultancy and development contracts as a Freelancer via Upwork. The nature of the jobs performed is highly variable, check my profile in https://www.upwork.com/freelancers/ezequiel. Mostly database-related jobs including migration, optimisation, development, securitisation, RLS, APIs, recovery, backup/restore, automation, integration, etc.

Software Engineer

Sandstone Technology•  October 2020 - February 2024•  Sydney, Australia

Upgraded Sandstone's online banking software solution from VAST 8 (32 bit) to VAST 11 (64 bit), along with its internal documentation, required external libraries and DLLs, custom implementation of ODBC and encryption, improved Linux support, and more. VAST is Visual Age for Smalltalk. Research and development for implementing Git with VAST, updating and improving features of Tonel to suit Sandstone's large code footprint. Additions and bug fixes to a number of features the online banking solution.

Senior Software Developer

Trapeze Group Asia Pacific•  December 2018 - September 2020•  Brisbane, Australia

Maintenance, modernisation, performance improvement, and further development of Trapeze’s core product TIMS™ management system for the transport industry. Key technologies are Instantiations VAST Smalltalk and PostgreSQL. Designed and implemented a fatigue management system module.

Product Engineer

Exactal•  July 2017 - December 2018•  Brisbane, Australia

Responsibilities: Enhancing the CostX solution with a collaborative spreadsheet engine and a RESTful interface, along with a package of new features required for the upcoming version 7.0. Accomplishments: Designed and implemented a RESTful-based collaborative data-sheet engine (inspired on Google Sheets) leveraging PostgreSQL's notification system developed as a PostgreSQL C extension, and a client interface in Delphi.

Software developer

Insolvency Management Services•  March 2014 - July 2017•  Sydney, Australia

Maintained and improved a key production software that handles sensitive information including PI and financial transactions, developed in Delphi. Designed a system for migrating this system from its legacy database to PostgreSQL. Developed SOA services in c# for the company's ESB. Produced reports, improved processes, and automated a variety of functions, mostly using shell and perl scripting, and accessing third party software's databases, including MS SQL Server and MySQL. Developed interfaces for the PostgreSQL database to access documents stored in the filesystem, the system's legacy database, MySQL databases, and D3 (Pick) systems. Assisted with general systems, VM hosts and guests, networking, Windows, Linux and Active Directory services, database administration, and backups to tape and cloud using Veeam.

Software developer

Good Business Technology•  July 2001 - June 2009•  Sydney, Australia

Software design and development and customer support: BP, United Petroleum, Stockland, Colonial-Gandel, Vodafone, Australia-Israel Camber of Commerce, OneCard, SpotRewards.