Available to hire
I’m Konstantinos Manolis, a Full Stack Developer based in Greece with a track record of delivering enterprise-grade web and SaaS applications. At Terracom S.A. in Ioannina I contributed to QR Patrol, a large-scale multi-tenant platform for security monitoring, built with Angular on the frontend and Node.js on the backend, serving thousands of active users. I also developed an experimental AI assistant that translates natural language into SQL queries, empowering users to generate custom data grids and reducing manual query-writing time by about 70%.
I’m passionate about modernizing legacy systems, data visualization, and AI-assisted tooling. I’ve led migrations from XOJO to Angular/TypeScript, implemented cloud deployments on Azure, and built BI dashboards to help sales and support teams make data-driven decisions. Outside of coding, I enjoy exploring field data collection tools and indie game scripting, while staying active in sports and creative tech projects.
Skills
Work Experience
Software Developer at Terracom S.A.
February 28, 2025 - August 30, 2025Developed an experimental AI assistant that translated natural language to SQL queries, reducing manual query-writing time by approximately 70%. Participated in migrating a legacy project from XOJO to Angular, modernizing an app used by over 2,000 active users and reducing technical debt by 30%. Led the development of a 'Time & Attendance' module that helped 50+ client organizations streamline payroll processing, saving hours of administrative effort weekly. Created SQL reports and BI dashboards to enhance sales and support team campaign tracking and decision-making. Automated developer workflows with custom scripts, cutting manual tasks by 70%. Integrated the open-source YoBulk tool into existing products to enable CSV importing for multiple entities.
Software Developer at Verus+
August 1, 2022 - August 30, 2025Contributed to the Eco-Time Machine research program by building analytical tools focused on historical regional development. Designed and implemented a payment system for ISTH, integrating Piraeus Bank APIs to automate subscription renewals and debt collection for over 500 members.
Software Developer at Terracom S.A.
February 1, 2025 - August 30, 2025Led development of an experimental AI assistant for natural language to SQL query translation, reducing manual query writing by approximately 70%. Participated in migrating a legacy XOJO project to Angular, modernizing the app for over 2,000 users and cutting technical debt by 30%. Coordinated creation of a Time & Attendance module for 50+ client organizations, streamlining payroll processes and saving hours of administrative work weekly. Designed and produced SQL reports and BI dashboards to support sales and campaign insights. Automated developer workflows with custom scripts, reducing manual tasks by 70%. Integrated YoBulk open-source tool for CSV importing across multiple platforms.
Software Developer at Verus+
August 1, 2022 - August 30, 2025Contributed to the Eco-Time Machine research project by building analytical tools for historical regional data. Designed and implemented a payment system integrated with Piraeus Bank APIs to automate subscription renewals and debt collection for over 500 members.
Fullstack Developer at Terracom S.A.
February 1, 2025 - September 20, 2025Contributed to QR Patrol, a large-scale multi-tenant SaaS platform for security monitoring, built with Angular (TypeScript) on the frontend and Node.js (Express) with MariaDB/MySQL on the backend, delivering enterprise-grade functionality to thousands of active users. Built an experimental AI assistant that translates natural language into SQL queries empowered by OpenAI, enabling users to generate custom data grids and reducing manual query-writing time by ~70%. Contributed to migrating a legacy XOJO project to Angular/TypeScript, modernizing the application for 2,000+ users and reducing technical debt by 30%. Coordinated the development of a Time & Attendance module, helping 50+ client organizations streamline payroll processing and reduce administrative effort by hours per week. Created SQL reports and BI dashboards for sales and support teams, enhancing campaign monitoring and decision-making.
Fullstack Developer at Verus+
August 1, 2022 - September 20, 2025Contributed to the Eco-Time Machine research program, developing an interactive map application with .NET Core MVC, Leaflet.js, and CosmosDB to visualize the historical development of the Kotyli region through dynamic GeoJSON layers. Built a module dynamic form builder (reused in Eco-Time Machine and Biomonitoring) that allows forest rangers to report field events, significantly improving the consistency and adaptability of data collection. Deployed solutions on Microsoft Azure, integrating Active Directory for authentication and implementing policies based on claims to separate functionality between managers and standard users. Designed and deployed a payment system for ISTH, integrating Piraeus Bank APIs to automate subscription renewals and debt collection for 500+ members.
IT Support Specialist at Hellenic Army (32 Marine Brigade)
December 1, 2025 - September 20, 2025Provided technical support in headquarters and battalion offices, troubleshooting and resolving hardware/software issues to ensure smooth daily operations. Performed PC setup and configuration on the local military network, including installation, system updates, and compliance with security protocols. Supported server administration and Active Directory management, handling user accounts, permissions, and authentication for multiple battalions. Assisted officers with operational reporting and presentations, preparing Excel-based analyses and daily briefings to support decision making. Coordinated hardware maintenance and upgrades, extending the lifecycle of computer systems and improving reliability in the brigade’s offices.
Technical and Secretarial Support at Athletic Taekwondo Federation
February 1, 2020 - September 20, 2025Developed custom invoice tools to automate payment tracking and reduce manual processing time by 50%, improving financial operations for the federation. Streamlined the tournament bracket creation process, cutting preparation time and reducing errors during national competitions. Provided technical setup and support on the playing field, configuring scoring systems (PCs, routers, TVs, and mobile devices) for multiple arenas. Acted as the primary troubleshooter during tournaments, resolving real-time technical issues across scoring systems to ensure uninterrupted matches.
Taekwondo Umpire at Athletic Taekwondo Federation
September 1, 2018 - September 20, 2025Served as an umpire for national and international tournaments, ensuring fair play and adherence to competition rules.
Education
MSc in Data and Computer Systems Engineering at University of Ioannina
October 1, 2021 - March 1, 2024BS in Applied Informatics at University of Macedonia
September 1, 2015 - September 1, 2021MSc in Data and Computer Systems Engineering at University of Ioannina
October 1, 2021 - March 1, 2024BS in Applied Informatics at University of Macedonia
September 1, 2015 - September 1, 2021MSc in Data and Computer Systems Engineering at University of Ioannina
October 1, 2021 - March 1, 2024BS in Applied Informatics at University of Macedonia
September 1, 2015 - September 1, 2021Qualifications
Industry Experience
Software & Internet, Professional Services, Education, Financial Services, Media & Entertainment
Skills
Hire a Developer
We have the best developer experts on Twine. Hire a developer in Ioannina today.