I am currently away from home, freelancing via Upwork and doing very well, but with periods without work. I'm looking for a stable part-time or freelance remote job (10-20 hours per week) appropriate for my skillset. I am flexible, responsible, hard worker, pay attention to detail, and at the same time maintain focus on the business goals.
ETLooking for a job
Ezequiel Tolnay
@etolnay
Software developer and database expert with 25+ years of experience.
AustraliaWhat I'm looking for
With over 25 years of professional experience, I am a full stack developer with a strong background in a wide variety of technologies and solutions. Throughout my career, I have worked in industries such as e-commerce, financial services, public transport, and construction, gaining expertise in areas such as storage virtualization and databases.
I have extensive knowledge of various programming languages, including C, C#, Java, Perl, PHP, and JavaScript. I am skilled in database programming with PostgreSQL, MS SQL Server, Oracle, and MySQL. Additionally, I have experience in web-based systems, desktop applications, and embedded applications.
I am a fast learner and have a strong attention to detail, allowing me to quickly adapt to new methodologies, frameworks, and programming languages. I am a problem solver and have a proven track record of improving database performance, designing and developing software frameworks, and implementing redundancy and fault tolerance.
Experience
TS
Current
Senior Database Specialist
Tolnay IT Services
Jan 2023 - Present (1 year 4 months)
Freelance database expert, with more than 30 years of experience. PostgreSQL, MySQL, MS SQL Server. Installation, upgrade, securitisation, performance improvement, SQL and stored procedures, design and architecture, REST and RPC APIs. AWS RDS/Aurora, Supabase, Azure, Google Cloud. TimescaleDB.
TA
Senior Software Developer
Trapeze Group Asia Pacific, Middle East & Africa
Dec 2018 - Oct 2020 (1 year 10 months)
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.
STUpgraded 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 Sandsto
IN
Analyst/Programmer
Insolvency Management Services Pty Ltd (iMS / ARMS / CFMG, n
Apr 2014 - Jul 2017 (3 years 3 months)
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, an
EX
Product Engineer
Exactal
Jul 2017 - Dec 2018 (1 year 5 months)
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. 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.
GL
Software Developer
Good Business Technology Pty Ltd
Jul 2001 - Jul 2009 (7 years 11 months)
Software design and development and customer support: BP, United Petroleum, Stockland, Colonial-Gandel, Vodafone, Australia-Israel Camber of Commerce, OneCard, SpotRewards
CS
Database developer
Core Security
Mar 2000 - Dec 2000 (9 months)
Led the project to develop a transition from an in-memory security rules to a relational database driven system for Core Security's server module.
LB
IT Manager
Leones de Bleek
Feb 1999 - Mar 2000 (1 year 1 month)
Managed the IT department for the group of companies under the umbrella of Leones de Bleek (Remotti S.A. - food industry, , Colhue Huapi S.A. - petroleum industry, Delta Dock S.A. - port), providing design, upgrades, maintenance and support for software and hardware infrastructure.
SL
General Manager, IT Consultant, Entrepreneur, Coach
Syntagmax Pty Ltd
Jul 2009 - Dec 2010 (1 year 5 months)
Consultancy, software development and systems maintenance with my previous employer and their main customers (esp United Petroleum).
ZS
Software Developer
Zetti Ingenieria en Sistemas
Apr 1997 - Feb 1999 (1 year 10 months)
Software development, enterprise backup and restore solutions, database design and administration, customer support.
AM
Software Developer
Argie Mae
Jul 1996 - Apr 1997 (9 months)
Software development in Visual Basic, Visual C++, MS Access, MS SQLServer, and Delphi.
VA
Programmer
Ventuiz y Asociados
Mar 1993 - Jul 1996 (3 years 4 months)
Software development in Clipper, and systems maintenance of DOS/Windows workstations and Novell Netware servers.
Tech stack
Learn about the tools and technologies that Ezequiel likes to use.
Availability
Looking for a job
Location
AustraliaAuthorized to work in
Portfolio
hackerrank.com/etolnaySalary expectations
0-0 AUD
Job categories
Skills
Full Stack Web DevelopmentDatabase DesignPerformance OptimizationData WarehousingC++JavaPerlPHPJavaScriptPostgreSQLMS SQL ServerOracleMySQL.NETAmazon Web Services (AWS)CygwinDebianFreeBSDGoogle SheetsGordonJSONJiraLinuxMediaWikiOpenBSDSQLSmalltalkTimeScaleDBVisual BasicWindowsWindows 10XMLXenODBCEncryptionGit
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