Expert in relational database systems, especially PostgreSQL (Supabase, Amazon Aurora/RDS, Azure Hyperscale/CosmosDB/Citus, postgREST, RPC, RLS, timescaledb, PostGIS), MS SQL Server, and MySQL, with more than 27 years of experience as a database architect, designer, developer, and administrator. I’m also a software developer with 37 years of experience in many platforms, programming languages, and database systems.
Expert in all of the following:
* database installation, configuration, optimisation, securitisation, backups, performance improvement, encryption.
* database design, SQL code optimisation, indices optimisation, coding stored procedures, increasing performance and security, partitioning.
* data quality, de-duplication, normalisation, AI-assisted enrichment.
* single and multi-tenant systems, JWT authentication, RLS authorisation.
* REST and RPC functions, Edge/Lambda functions, Webhooks, AI APIs, Realtime, migrations.
* database conversion or migration (e.g. to/from noSQL or JSON stores), interfacing with other databases, importing and exporting data, interfacing with online services (pl/perl, C, C#)
* hot/cold backup and restore, recovery, replication (master/slave or master/master), mission critical
* encryption in transit and/or at rest; encryption of data for authorised access only
* text-file data extraction, formatting, conversion, archival, clean-up.
Databases: PostgreSQL, SQL Server, MySQL, D3/Pick, Oracle, NexusDB, DB2, SQLite, COBOL, MongoDB, BerkeleyDB, Informix, Access, InterBase, Paradox, DBase/Clipper/Fox (DBF), CSV and plain text.
Expertise with UAT/development/test environments, Regular Expressions (regex), batch and shell scripting, sed and other text processing tools, Excel, SOAP and web services, networking tools, and many programming languages (including Delphi, C/C++/C#, Perl, PHP, Smalltalk, Java, JavaScript, Python, and more). I can provide training and consultancy.
Database Design
PostgreSQL Programming
Migration
Oracle
PostgreSQL
Data Mining
Regex Writing
Microsoft SQL Server
MySQL
Stored Procedure Development
Data Backup
Data Cleaning
Supabase
Amazon RDS
Amazon Aurora
Perl
Bash Programming
Adnan S.
Corrimal, Australia
$80/hr
4.1
20 jobs
Hi there! Seeking an expert in Java, Spring, Hibernate, Data Security, Angular, API (REST, SOAP), Node and additional technologies to achieve rapid transaction rate. Over the past 20 years, I have refined my skills through dedicated work in diverse domains such as Application/ERP Development, Application Integrations, Fintech, Oil/LPG Industry, Travel Industry, Education, Telecom , Web Development, Frontend Development, Application Customization, Performance Optimization, and Component Development.
I have acquired extensive expertise in Java, Spring, Spring Boot, Spring Reactive, Spring Data, Spring Cloud, Spring Batch, IAM, OAuth 2.0, OpenID Connect, SAML, multi-factor authentication, Keycloak, REST API, SOAP API, JPA, Struts2, AWS Lambda, Hibernate, Node.js, Puppeteer, Next.js, Angular, React, Redis, Kafka, Rabbit MQ, JSP, Servlet, JSF, JavaScript, jQuery, HTML, CSS, XML, Lucene, JXL, POI, XSLT, JSON, JSON-LD, EJS, Python, GraphQL, Apache Airflow, Apache Spark, IBM Cognos, JasperReports, BIRT, Oracle, MySQL, SQL Server, PostgreSQL, IBM DB2, NoSQL, MongoDB, DynamoDB, Tomcat, OC4J, IBM WebSphere, WildFly, JBoss, Docker, Kubernetes, Bitbucket, GitLab, GitHub, RTC, CVS, VSS, Git, Confluence, JIRA, Maven, Gradle, Ant, Cursor, Replit Windsurf, Lovable, Trae, Bolt, Vercel and many more.
To secure your data, I have expertise in both symmetric (e.g., AES, DES, Triple DES) and asymmetric (e.g., RSA, ECC) encryption mechanisms. I am also experienced in PGP / GPG encryption, which combines symmetric and asymmetric encryption to secure message content and protect the session key. Additionally, I have integrated applications with Hardware Security Modules (HSMs) for enhanced security. My goal is not just to meet but to exceed your expectations.
My method for achieving project success revolves around:
– Strategic Planning: Always look on a bigger-picture, make sure all angles are covered.
– Agile Development: Adapt on the go, iterative progress yields positive results.
– Quality Assurance: Attention to detail, ensure top-quality results by leaving no room for errors.
– Timely Delivery: Time is valuable; meeting deadlines is crucial to avoid delays and extra costs. .
– Transparent Communication: Clear and concise updates to stake holders.
Always aim to collaborate with you, not just work for you, to ensure every milestone leads to success.
P.S.: Feel free to drop a message to discuss the details of your project and let's make it a proud achievement for both of us.
XSLT
Java
Spring Framework
Spring Boot
Angular
React
Node.js
Apache Kafka
SOAP
EJB
Redis
PostgreSQL
JavaFX
Puppeteer
Web Scraping
Phuong D.
Doncaster East, Australia
$60/hr
4.9
389 jobs
320+ successful Upwork projects completed since 2013, with 20 plus years of software development, integration, automation, and business systems experience.
I specialise in building reliable integrations between accounting systems, ERP platforms, ecommerce stores, print MIS systems, shipping providers, payment gateways, and custom business applications.
My main focus is practical business automation: moving data correctly between systems, reducing manual work, fixing broken workflows, and building long term integration solutions that are stable, maintainable, and easy to support.
Technical Skills
• C#, VB.NET, PHP, Java
• ASP.NET, .NET Core, Blazor, Angular, Bootstrap
• REST API, GraphQL, SOAP, OData, Webhooks
• XML, JSON, CSV, EDI style data processing
• cXML, PunchOut, quote and purchase order workflows
• SQL Server, MySQL, SQLite, PostgreSQL, NoSQL
• Windows Services, Azure Functions, IIS
• Azure Blob Storage, scheduled jobs, background workers
• API authentication, OAuth, OAuth1, OAuth2, JWT, API keys
• RPA and UI automation including UiPath
• OCR, PDF automation, AI assisted document extraction
• Data migration, data cleansing, mapping, validation, and reporting
Accounting and ERP Integrations
• QuickBooks Desktop SDK, qbXML, QuickBooks Web Connector, and QWC setup
• QuickBooks Online API
• Reckon Desktop, Reckon Hosted, Reckon One, and Reckon API integrations
• Xero API, invoices, customers, payments, tracking categories
• MYOB, Sage 50, Sage 200, Sage Intacct, FreshBooks
• NetSuite REST, RESTlets, item lookup, invoice export, customer sync
• Salesforce and custom CRM or ERP integrations
• QuickBooks Online and Reckon One certified
• Invoice import, sales order import, payment sync, remittance processing, customer matching, item mapping, tax handling, and reconciliation workflows
Ecommerce and Marketplace Integrations
• Shopify, WooCommerce, Magento, BigCommerce
• Custom ecommerce middleware and plugins
• Automated order import and export
• Product, inventory, price, and customer synchronisation
• WooCommerce to Reckon and accounting system workflows
• Booking platform integrations including Airbnb, Booking dot com, and Agoda
• Marketplace order processing and custom fulfilment workflows
Print MIS, Manufacturing, and Procurement Integrations
• printIQ API, OData API, webhooks, quote import, order import, and invoice export
• Print MIS and manufacturing workflow automation
• Coupa, Unimarket, and cXML PunchOut style workflows
• Purchase order, quote approval, order acknowledgement, and supplier invoice flows
• SmartSite, product configuration, simplified products, apparel, embellishment, and freight workflow support
• Integration troubleshooting for print, manufacturing, and production environments
Shipping and Logistics Integrations
• ShipStation, Australia Post, UPS, TNT, Toll, OpenFreight, MachShip
• Freight quoting, consignment creation, label generation, and tracking updates
• Warehouse, dispatch, stock, and fulfilment workflow automation
• Freight tracking links and order status update integrations
Payment Gateway Integrations
• Stripe, PayPal, Authorize.Net
• eWAY, SecurePay, Braintree, BluePay
• Commonwealth Bank, PayChoice, Windcave, and other payment providers
• Paid order handling, invoice creation, payment posting, and transaction fee recording
Cloud, DevOps, and Support
• Azure, AWS
• GitHub, Bitbucket, Azure DevOps
• CI/CD pipelines
• Docker and cloud deployment support
• IIS hosting and Windows server based application deployment
• Long term maintenance, monitoring, debugging, and integration support
Other Experience
• Custom desktop and web application development
• AI assisted document processing workflows
• Zapier and business process automation
• Mobile development using Xamarin and Android Studio
• iManage and GlobalX document system integrations
• Legacy system integration and modern API middleware development
• Complex data mapping between old and new systems
• Business workflow analysis and automation design
I work best on projects where the requirement is not just to write code, but to understand the business process, identify the right integration flow, handle edge cases, and deliver a solution that works reliably in real day to day operations.
I can help with new integrations, fixing existing integrations, API troubleshooting, data migration, automation, reporting, and long term support.
JavaScript
Desktop Application
C#
Visual Basic
Xamarin
ASP.NET Core
jQuery
Intuit QuickBooks
Xero
Zapier
Blazor
Document Management System
API Integration
RESTful API
Fazlur K.
Sydney, Australia
$40/hr
4.9
109 jobs
LMS development specialist with expertise in custom development with the following stack-
✅ Web security
✅ WordPress, LearnDash and Moodle
✅ Buddyboss and BuddyPress
✅ Infusionsoft and Memberium
✅ Woocommerce, Membership and Subscription
✅ Uncanny owl and extensions
✅ ActiveCampaign and mailchimp
✅ Elementor, Divi, Astra pro
✅ AWS and Azure hosting
✅ Laravel, React, Angular, Vue
✅ WCAG Compliance
Fazlur has excellent programming and database development skill. He has ten years experience with PHP, C# and .net in developing enterprise scale high precision, secure and quality web and desktop applications to handle prescription, diagnostic and medical records for a medical company. Learning Management System (LMS) development is his forte and he excels in LearnDash & custom plugin development. He is also a membership site development specialist.
EXECUTIVE SUMMARY
Eight years hands on experience in designing and developing multi-tier complex and mission critical database driven .Net applications using Object Oriented Design and Development methodologies
Five years hands on experience in B2B integration utilizing SOAP, Rest, WCF, XML, XSD, XSLT, C#, VB.Net
Advanced level of knowledge and experience with Microsoft SQL Server 2005/2008 in database design and complex T-SQL programming (Stored Procedure and Function writing), Triggers, Cursors, Transaction Control, Security.
Integration of SSRS with ASP.NET and Win form application
Strong background in ASP.NET. Experienced in developing multi tier windows service, web and networked application utilizing ASP.NET, C#, VB.NET, AJAX
Experience in the development and management of IT projects, strategy, and business process, information, application and technology architecture
Able to understand complex business integration problems and determine the impact on information architecture.
Have high attention to detail – provides regular data extraction and analysis for client to submit to ACCC and other regulatory bodies
Well organised and self motivated – Has taken multiple initiatives and work from the inception phase collaboratively with mid level managers and external stakeholders to provide multichannel integration, e-commerce and direct debit integration, sms integration and many other projects. Constantly achieved quality outcomes under tight deadlines
Experience with managing full SDLC utilizing agile and structured methodologies and leading development team
Masters degree in Software and Information Technology from the University of Technology, Sydney (UTS) with distinction
Moodle
Website
Website Customization
LearnDash
CMS Development
WooCommerce
WordPress
Adobe Captivate
API Integration
Elearning
Laravel
Training Online LMS
Learning Management System
Articulate Storyline
Memberium
Timothy A.
Melbourne, Australia
$40/hr
5.0
28 jobs
Hi,
I'm a professional software developer with 10+ years of experience working in the software industry. I've worked on many different projects throughout my career including, enterprise scale web applications, desktop applications, databases and mobile app development. I've also spent several years working in the testing industry specialising in web and mobile automation. With my solid background of dev and test you can trust me to complete your project on time with excellent quality.
Regards,
Tim.
PostgreSQL
C
React
Python
JavaScript
Java
HTML5
PHP
C++
SQL
CSS
Perl
Database
Web Application Development
Desktop Application
Zulqarnain S.
Sydney, Australia
$75/hr
4.9
71 jobs
ZQ is an extensively experienced full-time technical project manager delivering transformation solutions to the businesses of all sizes. ZQ's technical background along with people management skills allows him to lead team of software engineers to deliver projects.
Running projects in sync with business and technical teams is ZQ's specialty with full project ownership from project plans, compiling SoWs, communicating status reports, managing risk and mitigation approaches along with keeping a track of budgets by keeping project commercials at the fore-front.
A trusted advisor and consultant providing innovative Digital Transformation Solutions using products like Kofax, DocuSign, Readsoft, Basware, Nintex, FileBound and ActiveDocs.
ZQ's goal is to assist clients achieving desired outcomes by providing consulting services thus allowing clients to gain competitive advantage, efficiency and business transformation throughput.
Expertise range from providing Kofax consulting, custom Kofax development, workflow development, SharePoint consulting, Nintex and Skelta workflows development along with web development using Python and VS.Net
In addition ZQ provides configuration and integration services for DocuSign, Freshdesk, Zendesk, Zapier, Atlassian Jira and Shopify.
ZQ possess extensive experience in Data Capture using OCR technologies along with automation using RPA products like UiPath, Automation Anywhere and Kapow/Kofax RPA.
Extensive knowledge and practical experience integrating Bulk SMS gateways APIs - Twilio, Plivo, Silverstreet, Spryng, Ozeki, 42Tele, Tyntec, Nexmo, TextMark, Trumpia, Avid and Anchor.
Implementation specialist in Freshdesk, ActiveDocs, OpenText eDocs, Readsoft and PsiCapture.
Extensive experience integrating with finance ERPs using APIs, Staging Database and Flat Files. Finance ERP includes JDE EnterpriseOne, TechnologyOne, SAP, Quickbooks, Ellipse, Peoplesoft and MS Dynamics.
Twilio API
Microsoft Visual Studio
ASP.NET
Zoho CRM
PayPal Integration
Tesseract OCR
SMS Gateway
LinkedIn Development
Business Process Modeling
Telerik
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