Μάριος Νάκας

Integrating existing designs with new requirements in mainframe applications built with JCL, COBOL, CICS and SQL DB2 Accurate application issue tracking and resolving Participation in the development of new projects during the whole lifecycle of the event(Technical analysis, Build, Testing, QA)

Mainframe Developer at Approach – Accenture (2023-11 – Present)

• Integrating existing designs with new requirements in mainframe applications built with JCL, COBOL, CICS and SQL DB2
• Accurate application issue tracking and resolving
• Participation in the development of new projects during the whole lifecycle of the event(Technical analysis, Build, Testing, QA)
• Delivering quality result meeting specific deadlines, performance standards and business requirements
• Resolving any assigned technical issues, bug reports, performance issues

EFT POS Product Supervisor and Customer Support Services at Mellon Technologies S.A. (2022-02 – 2023-11)

• Monitoring and supervising all product activity: POS preparation and dispatching: Ensuring all POS product deliverables are prepared and distributed on time, meeting specific deadlines based on the SLAs of each signed contract
• Help-desk operations: Assuring that all incidents are resolved on time meeting specific KPI targets
• POS Lab repairing and Quality Assurance: Coordinating the repair center team in meeting specific timelines and quality standards regarding POS supply efficiency and good functionality
• Constant communication with customers: Daily interaction with customers for specific requests and cases that need to be tended (via phone calls, computer calls(Microsoft teams) or e-mails)
• Organise and perform training sessions for any Technical matter related to the POS product on customer's demand
• Project rollout coordination: Taking part in e-conferences to define new specifications for new projects that need to be planned and launched
• Communicating with the Network of Associates – Field Technicians and writing specific guidelines for new or ongoing projects
• Ensuring the project is running smoothly during the whole duration of the rollout phase
• Data analysis: Processing Raw Big-Data to participate in surveys regarding POS product activity
• Processing Raw Data and conducting custom reports on customer's demand
• Processing Data to conduct SLA(Service Level Agreement) reports on weekly/monthly basis
• System automations: Tracing and recording any work-flow processes that need to be automated (Quality of life improvements)
• Providing specifications to system admins (ERP, IS, Web services) for new requirements that need to be implemented (new projects/functionalities)

POS Terminal Preparation Technician – Electronic Engineer at Mellon Technologies S.A. (2020-10 – 2022-01)

• Preparation of terminals, installation of software application and operating system
• Preparation of terminals for registration of terminal keys and security of SSL communication protocols
• Use of ERP system; handling terminals, generating sales and technical support orders
• Checking the proper operation and debugging of technical cases
• Communication coverage of issues and difficulties during the preparation process

Barista at Miller Food House & Bakery, Baco Group of Companies (2018-06 – 2020-10)

• Customer service
• Preparation of various types of drinks/beverages/coffee
• Night shift manager
• Quality control of bakeries
• Monitoring of raw material stocks
• Creating orders
• Processing of e-food orders

Loader – Warehouse Keeper at Zazzoo Event Rentals (2015-05 – 2016-06)

• Loading and unloading of equipment to and from the company's central warehouse and installation in hotels, restaurants and private homes
• Quality control of the equipment after receipt and installation in the relevant areas of the warehouse
• Warehouse inventory

Internship as an assistant of the network manager in Network infrastructure and electrical installation at Nea Ekpaideutiria G. Malliaras (2010-06 – 2010-09)

• Establishment of facilities and conditions for the installation of a computer network to meet the needs of the school
• Checking the network connectivity using terminals
• Establishing a fully-working network server

BSc Degree in Digital Systems – University of Piraeus