20.10.2026 aktualisiert
40 % teilweise verfügbar
SQL & Business Applications Developer | Oracle, PostgreSQL, C#/.NET | Dashboards & Automation
Muscat, Oman
Nur Remote
B.Sc. Computer ScienceÜber mich
I build SQL reports, dashboards and workflow automation using Oracle, PostgreSQL and C#/.NET. Available up to four hours daily for scoped remote projects with tested results and handover notes. For personal projects, January dates indicate the year only.
Skills
Asp.NetC#SQL DeveloperSQLToad (Software)
Database Administration & SQL Development
Expertise in Oracle Database, PostgreSQL and Microsoft SQL Server, including stored procedures, triggers, performance tuning, data migration, data modelling, Oracle RMAN backups, Disaster Recovery, and Oracle Data Pump. Oracle Certified Professional (OCP) with hands-on DBA experience across 5+ instances in multiple countries.
Full-Stack Application Development
Development of end-to-end business applications using C# / ASP.NET, JavaScript, TypeScript, Python, Java (Android), Node.js, React, Next.js and Electron.js. Delivery of web, mobile and desktop applications for ERP, CRM, POS and government systems.
ERP Systems & Business Application Integration
Ownership, development and production support of ERP platforms (Axpert on Oracle 19c), including budget-control modules, approval-notification services, customer credit-limit control, Android ERP apps and management dashboards for finance, HR, QS, QA/QC and procurement.
AI & Automation Tools
Use of generative AI tools including Claude Code and GitHub Copilot for AI-assisted development, LLM application development and prompt engineering to accelerate software delivery.
Frameworks & Platforms
Hands-on experience with Node.js, Electron.js, React, Next.js, REST API integration and Android app development using Java and Android SDK.
DevOps & Tooling
Proficiency with Git, GitHub Actions, Oracle SQL Developer, pgAdmin, Power BI, Visual Studio, TOAD, DBeaver, IIS, Android Studio, Postman and job scheduling via cron.
Domain Knowledge
Deep understanding of business reporting, inventory and warehouse management, construction project systems, cost reporting and controlling, point of sale, batch-based costing, QA/QC processes, finance (AP/AR, journals), e-Governance, pharmacy systems and forecasting and demand prediction.
Operating Systems & Infrastructure
Experience working on Linux (Ubuntu) and Windows Server environments, including IIS hosting, server configuration and production uptime management.
Agile & Software Development Lifecycle
Application of software development lifecycle practices including root cause analysis, troubleshooting, production and application support, requirements gathering and analysis, stakeholder management, technical documentation and Agile/Scrum methodologies.
Expertise in Oracle Database, PostgreSQL and Microsoft SQL Server, including stored procedures, triggers, performance tuning, data migration, data modelling, Oracle RMAN backups, Disaster Recovery, and Oracle Data Pump. Oracle Certified Professional (OCP) with hands-on DBA experience across 5+ instances in multiple countries.
Full-Stack Application Development
Development of end-to-end business applications using C# / ASP.NET, JavaScript, TypeScript, Python, Java (Android), Node.js, React, Next.js and Electron.js. Delivery of web, mobile and desktop applications for ERP, CRM, POS and government systems.
ERP Systems & Business Application Integration
Ownership, development and production support of ERP platforms (Axpert on Oracle 19c), including budget-control modules, approval-notification services, customer credit-limit control, Android ERP apps and management dashboards for finance, HR, QS, QA/QC and procurement.
AI & Automation Tools
Use of generative AI tools including Claude Code and GitHub Copilot for AI-assisted development, LLM application development and prompt engineering to accelerate software delivery.
Frameworks & Platforms
Hands-on experience with Node.js, Electron.js, React, Next.js, REST API integration and Android app development using Java and Android SDK.
DevOps & Tooling
Proficiency with Git, GitHub Actions, Oracle SQL Developer, pgAdmin, Power BI, Visual Studio, TOAD, DBeaver, IIS, Android Studio, Postman and job scheduling via cron.
Domain Knowledge
Deep understanding of business reporting, inventory and warehouse management, construction project systems, cost reporting and controlling, point of sale, batch-based costing, QA/QC processes, finance (AP/AR, journals), e-Governance, pharmacy systems and forecasting and demand prediction.
Operating Systems & Infrastructure
Experience working on Linux (Ubuntu) and Windows Server environments, including IIS hosting, server configuration and production uptime management.
Agile & Software Development Lifecycle
Application of software development lifecycle practices including root cause analysis, troubleshooting, production and application support, requirements gathering and analysis, stakeholder management, technical documentation and Agile/Scrum methodologies.
Erfahrung
Berufserfahrung5 - 10 Jahre
Freelancer seit2026
Sprachen
Englishverhandlungssicher
Projekthistorie
Job-search platform live on Vercel built with Next.js, TypeScript, PostgreSQL, Vercel, GitHub Actions and Claude/Gemini/Ollama. Collects European job postings daily from 5 aggregators and 72 company ATS boards, scores them against a structured profile with explainable arithmetic and generates tailored resumes. 150+ automated tests.
Python and Claude tool use on Oracle 19c. A tool that allows querying a live Oracle ERP stock ledger (3.5M rows) in plain English using a Claude agent that writes SELECT-only SQL through a hardened read-only layer, respecting ERP roles and a daily cost budget.
Licensed supermarket point of sale for Windows built with TypeScript, Electron, React, Fastify and PostgreSQL. Supports store server or cloud mode, tills on the shop LAN and a central hub for licensing, live activity and data sync across stores.