ΔΙΑΤΡΑΠΕΖΙΚΑ ΣΥΣΤΗΜΑΤΑ (ΔΙΑΣ) Α.Ε

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As a Security Engineer, you will join our highly skilled information security team with the mission to deliver high-quality, innovative cyber security services and solutions that reduce risk across the organization. In this role, you will receive structured mentoring, hands-on training, and exposure to enterprise-grade security technologies, building a solid foundation for a career in cybersecurity. You will gradually gain practical experience and deepen your technical expertise in multiple areas, such as network security, platform security, authentication/authorization systems, application security, and security frameworks. To succeed, you’ll need to demonstrate accountability, high motivation, a proactive attitude and a passion for rapid development in a challenging and regulated working environment.Responsibilities<ul><li>Contribute to building and maintaining the technical IT / cybersecurity capabilities necessary for safeguarding DIAS’s information systems and applications.</li><li>Support the administration of security-focused systems, such as data center firewalls, web application firewalls, database firewalls, hardware security modules, privileged access management, SMTP gateways, and managed PKI.</li><li>Assist in implementing security practices and tools throughout the Software Development Life Cycle (SDLC) / DevSecOps.</li><li>Explore and assess innovative technologies to solve daily cybersecurity challenges efficiently.</li><li>Perform vulnerability assessments to identify technical weaknesses.</li><li>Assist in the security risk analysis for current and new systems and recommend solutions for reducing exposure areas.</li><li>Contribute to audit preparation and compliance-related activities.</li><li>Assist in the creation of security processes, procedures, and performance metrics.</li><li>&nbsp;Work closely with other technical and operational teams to ensure effective security integration.</li></ul>Requirements<ul><li>Degree (or in the process of obtaining) in Computer Science, Mathematics, Physics, or a related field.</li><li>Knowledge of at least one programming language (Python preferred) for writing automation frameworks and relevant security tools</li><li>Understanding of Windows and Linux operating systems.</li><li>Passion for continuous learning and growth in cyber security</li><li>Good command of the English Language both written and oral</li><li>Excellent communication and interpersonal skills</li><li>Ability to work collaboratively in a team and independently when required</li></ul>Will be considered a plus:<ul><li>Certifications in Cybersecurity, Programming, or Linux administration.</li><li>Familiarity with enterprise security tools and frameworks.</li></ul>Why would you enjoy working with us ?As member of our team:<ul><li>You will work in a mission-critical fintech company shaping the future of digital payments in Greece.</li><li>You will experience a workplace built on meritocracy, transparency, and recognition.</li><li>You will receive mentoring, specialized training, and certifications to boost your career development.</li><li>You will work with cutting-edge security technologies in a regulated financial environment.</li></ul>What we offer:<ul><li>Strong mentoring and guidance</li><li>Competitive remuneration package</li><li>Private health &amp; life insurance plan for you and your family</li><li>Children allowances</li><li>Meal benefits</li><li>Hybrid working model</li><li>Training &amp; development opportunities</li><li>A stable, positive and supportive working environment</li></ul>

Security Engineer

As a Database Administrator, you will be a key member of our Technical Support Division, ensuring the high availability, security, and performance of our critical database systems. You will support and optimize MS SQL Server and Oracle databases, used by real-time payment services and financial infrastructure with nationwide impact. This role requires deep technical expertise, analytical thinking, and a commitment to operational excellence, within a high-performance and regulated environment.&nbsp;Responsibilities<ul><li>Database Administration: Ensure the reliable and efficient operation of mission-critical MS SQL Server and Oracle databases across production and non-production environments, supporting high-volume financial transactions with strict availability requirements.</li><li>Performance Optimization: Proactively analyze and fine-tune SQL queries, indexes, and overall database configurations, aiming for continuous performance enhancement and optimal resource utilization.</li><li>Automation &amp; Monitoring: Design, implement, and maintain automated workflows, scheduled jobs, and real-time monitoring tools that safeguard database health and contribute to operational resilience.</li><li>Backup &amp; Recovery: Develop and oversee robust backup, restore, high availability and disaster recovery processes to guarantee data integrity and business continuity, aligned with regulatory and internal RTO/RPO objectives.</li><li>Security &amp; Compliance: Apply security best practices, manage roles and access controls, and ensure all database environments meet compliance standards such as ISO 27001, GDPR, and CIS benchmarks.</li><li>Real-Time Troubleshooting: Rapidly identify, diagnose, and resolve performance issues or disruptions, ensuring real-time availability and reliability of critical services and payment infrastructures.</li></ul>Position Requirements<ul><li>Bachelor’s degree in Computer Science, Information Technology, or related field</li><li>Minimum 4 years of professional experience as a Database Administrator (DBA) working with MS SQL &amp; Oracle</li><li>Strong experience in query optimization, indexing, and database performance tuning</li><li>Hands-on experience with backup mechanisms, high availability, and disaster recovery strategies using MS SQL FCI and SQL Always ON</li><li>Solid understanding of database security best practices, global security standards and access control (ISO 27001, CIS, etc)</li><li>Experience in monitoring, alerting, and automation of database operations</li><li>Familiarity with cloud platforms (AWS, Azure, Google Cloud) and modern deployment models</li><li>Excellent command of the English language, both written and oral</li></ul>Required Knowledge, Skills, and Abilities<ul><li>Strong problem-solving and root cause analysis skills</li><li>Attention to detail and a mindset for high-quality, secure operations</li><li>Effective communication of technical concepts to non-technical stakeholders</li><li>Ability to work both independently and collaboratively in cross-functional teams</li><li>Familiarity with agile environments and continuous delivery pipelines is a plus</li></ul>Will be considered a plus<ul><li>Operating Systems: Hands-on experience with Windows Server operating systems, particularly in database hosting and administration environments</li><li>Other Databases: Working knowledge of PostgreSQL or similar relational database systems, demonstrating flexibility in managing diverse database technologies</li><li>Cloud Technologies: Familiarity with cloud-based database services (e.g. AWS RDS, Azure SQL, Google Cloud SQL), including migration, deployment, and monitoring of cloud-native or hybrid architectures</li><li>Data Warehouse: Experience in designing and maintaining data warehouse structures and processes to support historical data retention and business intelligence reporting</li><li>Real-Time Analytics: Ability to work with tools and platforms supporting real-time analytics, streaming data processing, or time-sensitive reporting use cases</li></ul>Why Would You Enjoy Working with Us?As a member of our team:<ul><li>You will be part of a mission-critical fintech company that plays a central role in digital payments in Greece</li><li>You will experience a work environment built on meritocracy, transparency, and recognition</li><li>You will participate in trainings, seminars, and certifications to continually enhance your technical and professional development</li><li>You will gain exposure to cutting-edge technologies, while working in one of the most critical infrastructure environments in the country</li></ul>What We Offer<ul><li>Competitive remuneration package</li><li>Private health &amp; life insurance plan for you and your family</li><li>Children allowances</li><li>Meal benefits</li><li>Hybrid working model</li><li>Training &amp; development opportunities</li><li>A stable, positive, and inclusive work environment</li></ul>

Database Administrator

We are looking for a high caliber Software Engineer to be part of our dynamic inhouse Software Development team. The role will participate in the development of Web applications and will assist in the implementation of new features both in the Front End and in the Back End as well as, in the maintenance of the existing SW applications, mainly by using Java (Java 17, Spring Boot), React.js, and SQL.ResponsibilitiesThe right incumbent will:<ul><li>Design and implement the programs assigned based on the technical specifications.</li><li>Conduct technical tests, ensuring both the satisfaction of the technical specifications and the operation’s efficiency and quality.</li><li>Maintain the programs assigned and suggests improvements while deal with any problems arise.</li><li>Maintain the technical documentation of the programs for which he/she is responsible.</li><li>May be assigned to maintain and support part of off-the-shelf application software packages.</li><li>Support both internal and external "users" of the programs for which he/she is responsible.</li><li>Within the scope of the responsibilities, he/she intervene in dealing with and solving any problems arise.</li><li>Support other operational needs as occurred and assigned by the Team Leaders.</li></ul>Position Requirements<ul><li>University degree in Computer Science, Information Technology</li><li>5+ years of development experience in Java stack</li><li>For back-end development, working experience in Java, Spring framework, Spring Boot and SQL</li><li>For front-end development, knowledge of Javascript, React.js HTML, CSS and related WEB technologies</li><li>Completed military obligations (for male candidates)</li><li>Familiarity and continuous interest on new technologies and tools</li><li>Organizational and communication skills</li><li>Ability to work towards deadlines</li><li>Teamwork / Collaboration</li><li>Ability to solve technical problems efficiently</li><li>Eager to learn and take on new challenges</li></ul>Why would you enjoy working with us?As member of our team:<ul><li>You will be working with a fast-growing fintech company that is helping to shape digital payments in Greece.</li><li>You will find a work setting based on meritocracy, transparency and recognition aimed at fostering excellence and advancement in all areas.</li><li>You will take part in training, specialized seminars and other educational programs to help you broaden your knowledge and competencies.</li><li>You will develop abilities and skills that will help you grow, working on leading-edge technology and industry trends.</li></ul>What we offer:<ul><li>Competitive remuneration package</li><li>Private health &amp; life insurance plan for you and your family</li><li>Children allowances</li><li>Meal benefits</li><li>Hybrid working model</li><li>Training &amp; development opportunities</li><li>A stable, positive and supportive working environment</li></ul>

ΔΙΑΤΡΑΠΕΖΙΚΑ ΣΥΣΤΗΜΑΤΑ (ΔΙΑΣ) Α.Ε

security engineer