Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Motivated and adaptable Software Engineer with over 7 years of experience in backend development, delivering scalable and secure applications in financial and enterprise domains. Proficient in Java, .NET, and Spring Boot, with hands-on experience in building and maintaining REST APIs, CI/CD pipelines, and database-driven systems. Strong problem-solving skills and a solid track record in Agile teams across fintech and IT solutions sectors.…Motivated and adaptable Software Engineer with over 7 years of experience in backend development, delivering scalable and secure applications in financial and enterprise domains. Proficient in Java, .NET, and Spring Boot, with hands-on experience in building and maintaining REST APIs, CI/CD pipelines, and database-driven systems. Strong problem-solving skills and a solid track record in Agile teams across fintech and IT solutions sectors.

Demetris Demetriades

Back-End Developer, Web Developer, Full Stack Developer, +2





Motivated and adaptable Software Engineer with over 7 years of experience in backend development, delivering scalable and secure applications in financial and enterprise domains. Proficient in Java, .NET, and Spring Boot, with hands-on experience in building and maintaining REST APIs, CI/CD pipelines, and database-driven systems. Strong problem-solving skills and a solid track record in Agile teams across fintech and IT solutions sectors.…Motivated and adaptable Software Engineer with over 7 years of experience in backend development, delivering scalable and secure applications in financial and enterprise domains. Proficient in Java, .NET, and Spring Boot, with hands-on experience in building and maintaining REST APIs, CI/CD pipelines, and database-driven systems. Strong problem-solving skills and a solid track record in Agile teams across fintech and IT solutions sectors.

Available to hire

Motivated and adaptable Software Engineer with over 7 years of experience in backend
development, delivering scalable and secure applications in financial and enterprise
domains. Proficient in Java, .NET, and Spring Boot, with hands-on experience in building and
maintaining REST APIs, CI/CD pipelines, and database-driven systems. Strong
problem-solving skills and a solid track record in Agile teams across fintech and IT solutions
sectors.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Greek, Modern

Fluent

English

Advanced

Work Experience

Senior Software Engineer at TSYS – A Global Payments Company

March 1, 2020 - Present

Developed backend services for financial systems using Java (Spring Boot) and .NET. Designed and maintained RESTful APIs for high-performance, secure financial transactions. Wrote efficient, clean code and contributed to architectural decisions in a microservice environment. Used Git, Jenkins, and CI/CD pipelines to ensure smooth, automated deployments. Worked with PL/SQL, integrated third-party services, and performed database tuning for large-scale systems. Participated in code reviews, sprint planning, and cross-team collaborations within Agile workflows.

Solutions Developer at Logicom Solutions

December 1, 2017 - March 1, 2020

Built enterprise applications using .NET C#, React.js, HTML5, and Java. Developed a chatbot-enabled web portal with regular feature releases managed via GitHub. Led the implementation of a License Monitoring and Documentation Management platform using K2 BPM and SharePoint. Designed and deployed SQL Server databases; created custom forms and controls using C#.NET. Mentored teammates on the K2 platform, participated in code reviews and testing, and supported critical enterprise systems.