Aug 2022 – Feb 2024 · 1 yr 6 mos · Berlin, Germany · Remote

• Implemented a proprietary design system with Jetpack Compose.
• Developed an innovative Android Navigation SDK for seamless screen transitions.
• Integrated Google VPS to provide accurate parking solutions.
• Implemented a QR Scanner for effortless ride initiation.
• Created a gamified Drive Under under-influence test for detecting impaired users.
• Introduced a Convenience Fee model for parking outside of designated zones.
• Enabled ride starts outside of the business area, expanding accessibility.

Sep 2021 – Aug 2022 · 11 mos · Moskháton, Attiki, Greece · Remote

• Focused on software development for Android Point of Sale (POS) systems during my tenure at Printec, with a primary objective of enhancing functionality and usability.
• Successfully integrated the ECR protocol for seamless communication between the cash register machine and the Android POS, demonstrating proficiency in protocol integration and custom XML parsing.
• Addressed the absence of Google Play Store on Android POS devices by integrating the SFTP (SSH File Transfer Protocol), enabling automated downloading and installation of updated POS versions in the background.
• Demonstrated adaptability and problem-solving skills in addressing unique challenges inherent to Android POS development, achieving successful integration and implementation of essential protocols for enhanced functionality.

Oct 2019 – Sep 2021 · 1 yr 11 mos · Tzavella 1-3, Chalandri, Athens, Greece · On-site

• Recognized as the most valuable member of the Android ecosystem within the My Vodafone App team, earning acknowledgment from fellow developers for exceptional contributions.
• Took on the role of mentor, providing guidance and support to junior team members, fostering their professional growth and development within the Android development domain.
• Conducted lessons and training sessions on unit testing, imparting essential skills and best practices to enhance the overall codebase quality and reliability.
• Actively contributed to the development and enhancement of payment-related features within the My Vodafone App in collaboration with the payments team, ensuring seamless and secure transactions for users.
• Played a pivotal role in the offer for postpaid users team, contributing to the ideation, development, and implementation of targeted offers and promotions, thereby enriching the overall user experience and driving customer engagement.

Nov 2017 – Oct 2019 · 1 yr 11 mos · Greece · On-site

• Spearheaded the design, development, and maintenance of native mobile applications for prominent organizations in Greece, including the Eurobank Mobile App, a flagship project.
• Implemented interactive finance tools within the Eurobank Mobile App, empowering users to monitor and manage their daily finances with ease.
• Prioritized user experience, functionality, and security throughout the development lifecycle, collaborating closely with cross-functional teams to ensure alignment with project goals.
• Successfully delivered high-quality mobile solutions that met and exceeded customer expectations, as evidenced by the success of the Eurobank Mobile App project.
• Leveraged expertise in Android development to contribute to the success of notable projects, earning recognition for technical proficiency and dedication to delivering impactful solutions.

Jan 2014 – Oct 2017 · 3 yrs 9 mos · Remote

• Led development of two pioneering Android apps from ideation to launch for startup teams, including full-stack development where I wrote the backend infrastructure to complement the frontend.
• Transformed innovative concepts into functional Minimum Viable Products (MVPs) within specified timelines.
• ◘ Conceptualized and developed an Android application connecting professionals (e.g., plumbers, electricians) with individuals seeking household assistance, streamlining communication and service provision for enhanced customer satisfaction.
• ◘ Engineered a cutting-edge Android platform facilitating seamless interaction between medical professionals and patients, enabling real-time health monitoring and comprehensive progress tracking encompassing vital signs, medication adherence, psychological well-being, and sleep patterns.