Dimosthenis T.

• Analyzed IBM DB2 legacy databases and migrated them to modern database solutions, improving performance and maintainability.
• Designed and implemented databases, stored procedures, and functions across SQL Server, MySQL, PostgreSQL, and MongoDB.
• Built and maintained Data Factories and pipelines on Azure DevOps, ensuring reliable and automated data workflows.
• Created and optimized MongoDB collections and containers with Atlas, tailored for scalable enterprise data needs.
• Developed data pipelines on both AWS and Azure, ensuring cross-cloud interoperability.
• Designed and maintained data warehouses, OLAP cubes, and ETL pipelines for advanced reporting and analytics.
• Implemented Kafka streams and topics using ksql scripts, enabling real-time data integration.
• Used SQL and Python to perform data correction and ensure high-quality datasets.

• Used SQL and Python, mainly for data correction, to ensure high-quality datasets.
• Monitored and optimized high-volume data flows using Kubernetes and Grafana, ensuring real-time observability.
• Designed and maintained relational and non-relational databases, including SQL Server, MySQL, PostgreSQL, and MongoDB.
• Built and deployed data pipelines with Azure Data Factory and AWS services to manage large-scale healthcare datasets.
• Provided advanced solutions for complex database challenges across distributed systems.
• Designed and optimized ETL processes and migration tools, improving data accuracy and consistency.
• Built and maintained data warehouses and cubes for advanced analytics in collaboration with BI teams.
• Designed and implemented Kafka streams with ksql to integrate heterogeneous data sources.

• Used SQL and Python, mainly for data correction, to ensure high-quality data.
• Designed and optimized stored procedures, functions, and queries in SQL Server, MySQL, and PostgreSQL to meet client requirements.
• Developed SSIS projects in Visual Studio 2019 to automate ETL processes and data integration.
• Built and deployed Data Factories on Azure and pipelines on AWS for cross-cloud data processing.
• Designed and maintained data warehouses, cubes, and migration tools for multiple enterprise clients.
• Created automated SSRS reports and visual dashboards for PMI (Philip Morris International) and other clients.
• Provided technical consulting on database optimization, reducing costs and improving performance.

• Served as founder and technical lead, overseeing all business operations, client relations, and project delivery.
• Conducted requirement analysis and provided consulting for clients with complex business and database needs.
• Managed web development projects from estimation to delivery, ensuring completion on time and within budget.
• Designed and developed desktop and web applications, integrating database-driven features to improve efficiency.
• Held daily staff meetings to define project agendas, assign tasks, and ensure alignment with client expectations.
• Delivered advanced database optimization solutions for clients requiring high performance.
• Built long-term client relationships by combining technical expertise with transparent communication and support.

• Designed and optimized databases and ETL pipelines across SQL Server and PostgreSQL environments.
• Built automated workflows to ensure seamless data ingestion and transformation.
• Developed and maintained SSIS projects for large-scale data integration.
• Implemented data warehouses and OLAP cubes to support analytics and reporting.
• Designed visual dashboards and SSRS reports for management, providing real-time insights.
• Optimized existing queries and stored procedures, significantly reducing execution times.
• Used VBScript to automate tasks in Excel files and other Windows environment processes.
• Used SSMS to create jobs and packages for automation tasks.

• Developed and maintained complex stored procedures, triggers, and functions for enterprise applications;

• Built ETL pipelines using SSIS to manage both structured and unstructured data;

• Designed and optimized relational database(MySQL) schemas to support critical business applications;

• Created automated reports and dashboards for business users;

• Delivered database performance tuning and troubleshooting support.

• Create communication tools between Oracle(TOAD) and MySQL(Workbench) for data integration among systems

• Data Team manage(3 members)

SingularLogic is one of Greece’s largest software companies, focusing on ERP, CRM, and enterprise application solutions.

• Designed and developed databases and reporting solutions for ERP systems using SSMS.

• Created and maintained stored procedures and functions for enterprise clients using C#.

• Built ETL pipelines using SSAS to integrate multiple data sources into centralized systems.

• Developed dashboards and custom reports using SSIS to support business analytics.

• Collaborated with cross-functional teams to enhance system scalability and performance.

• Designed relational database schemas from scratch to meet client requirements, ensuring scalability and efficient query performance;

• Built and optimized ETL pipelines for data migration and integration across multiple heterogeneous sources (CSV, Excel, APIs);

• Automated reporting workflows with SSRS and custom SQL scripts, reducing manual effort for clients;

• Developed dashboards that provided small business owners with real-time financial and operational insights;

• Provided consultancy on database optimization, indexing strategies, and query tuning for improved system performance;

• Assisted startups in setting up data-driven workflows and advised on cloud vs. on-premise database hosting solutions;

• Delivered technical documentation and training sessions to non-technical stakeholders to ensure sustainable use of systems.

Michanografiki - Organotiki – Technology and consulting company specializing in ERP/CRM implementations and IT support services across Greece.

• Contributed as a team member in implementations, focusing on database integrations and ERP/CRM rollouts;

• Analyzed client databases and developed custom connectors to synchronize data between multiple systems, ensuring smooth interoperability;

• Supported the setup and configuration of Galaxy ERP and CRM solutions, customizing workflows and modules to fit client-specific business processes;

• Provided daily live customer support, troubleshooting issues and resolving incidents in real time to ensure business continuity;

• Assisted in system testing and validation, making sure new deployments were stable and fully aligned with customer requirements;

• Worked with senior developers and consultants, gaining valuable hands-on experience in enterprise software solutions.

• Designed and implemented MIS data cubes within Galaxy ERP, focusing on Sales and Purchases modules to provide management with structured reporting and analytics;

• Assisted in customizing ERP workflows and reports, contributing to better data accessibility and decision-making for clients;

• Gained hands-on experience with VBScript and C# scripting, applying them in ERP customizations and automation tasks;

• Collaborated with senior consultants and developers to understand best practices in ERP deployment and data integration;

• Documented technical steps and results to create a knowledge base for future interns and junior staff;

• Built a strong foundation in enterprise software development, laying the groundwork for subsequent professional roles.

• Conducted requirement analysis for various clients, translating business needs into technical specifications;

• Designed and developed websites and e-commerce platforms using PHP, JavaScript, and MySQL, ensuring responsiveness and scalability;

• Delivered custom solutions such as booking systems, product catalogs, and interactive features tailored to different industries;

• Offered ongoing live support and maintenance, ensuring high uptime and quick resolution of technical issues;

• Built a diverse portfolio of websites and e-shops, including mantisnlp.com, traveltales.gr, psiktotechniki.gr, edytoys.gr, alfa-vita.gr, digitalprolab.eu, xantzaris-container.gr, umbrellas.gr, mynails.gr, and others;

• Helped small and medium-sized businesses establish an online presence, boost sales, and increase digital visibility;

• Collaborated directly with non-technical stakeholders, providing training and documentation to promote self-sufficiency.