Blockchain Business Analyst (since Aug 2019)

• Study 100+ IBM blockchain projects in terms of business value design, governance, and technology at global level to analyze commonalities and challenges among projects, and improve current best practices towards more successful client engagements

• Contribute to internal corporate assets (e.g. internal playbook) and update key stakeholders and IBM blockchain community (via knowledge-sharing sessions) with research findings

• Collaborate with the University of Groningen to jointly leverage academic insights on inter-organizational relationships / blockchain governance

• Co-supervise MSc interns on Strategic Management

• Co-authored a book chapter, submitted academic journal / conference papers with novel findings, participated in workshops:

  • M. Hanisch, V. Theodosiadis, and F. Teixeira. Digital Governance: How Blockchain Technologies Revolutionize the Governance of Interorganizational Relationships. Digital Transformation. University of Groningen Press, 2021.

  • M. Soelman, V. Andrikopoulos, J. Pérez, V. Theodosiadis, K. Goense, and A. Rutjes. Hyperledger Fabric: Evaluating Endorsement Policy Strategies in Supply Chains. In 2020 IEEE International Conference on Decentralized Applications and Infrastructures (DAPPS).

Consultant - Project Manager (since Nov 2017)

• Client-facing projects:

  • Large Oil & Gas client (since Jan 2021):

    • Closely collaborate with the Executive Team of an IBM Elite account, located across the globe, to improve internal operations

    • Act as Product Owner on two development teams for improving client-facing websites / platforms

    • Involved in retrieving, calculating / forecasting, and interpreting financial results

  • Large automotive clients (Jun 2018 - Mar 2019):

    • Managed 4 Robotic Process Automation (RPA) projects and identified about 350 teams who needed a replication of Proof-of-Concept solution, introduced agile methods, ensured projects can be implemented by using the given technology / enterprise software

    • Reviewed technical documentation, managed preparations for go-live, provided more than 20 technical Java-related sessions to the development team

  • Large FMCG client (Feb - Jun 2018):

    • Hosted 110 interviews with application owners in HQ and offshore subsidiaries in Europe and Africa to identify changes in the infrastructure needed to comply with the new EU's GDPR regulation and contributed to strategy for remediation in collaboration with managers, experts, applications owners, and privacy owner

• IBM internal activities (since Nov 2017):

  • Member of internal committees; Research (including chairmanship), Education, and Communications

  • Act as IBM Relationship Manager on the collaboration with the University of Groningen

  • Contributed to development of a consulting blockchain use case for transferring hazardous materials

  • Assisted in the development of Blockchain boilerplate as Scrum Master

  • Presented topics related to Central Bank Digital Coins (CDBCs) and cryptocurrencies' consensus algorithms

  • Co-supervised BSc students (Hyperledger Fabric, Stellar - community tokens)

  • Not-for-profit contribution led to an IBM Community Grant 2019 bring awarded to the University of Groningen

Technology Consultant at Large Dutch Bank (Sep 2019 - Dec 2020)

• Evaluated the feasibility of technical solutions, together with the client

• Developed / improved 30+ custom C-based scripts and managed LoadRunner / BSM tools to monitor availability of applications / services towards reporting to the Dutch Central Bank

• Involved in critical Data Center activities for Internet Banking Applications

• Aligned with offshore teams (in EU & India) for ticket management (80+ tickets)

Designed and implemented a framework of linear and nonlinear models for sales prediction in Sports Utility Vehicle (SUV) segments

Extracted, transformed, and loaded both internal and external data to create and validate forecasting models

Collaborated with an internal analytics team to discuss progress and receive feedback

Presented the results to the team and the Chief Economics Officer of the company

Achieved prediction errors lower than the client’s thresholds

Hosted at EU-XCEL, European Virtual Accelerator Program (all expenses covered by EU-XCEL)

Pursued competitive analysis and identified innovative aspects of our service, aiming at rewarding athletes

Designed and presented prototypes with innovative functionality to the Accelerator program

Collaborated with a multinational team, working remotely in five different European countries

Participated in "Ekinisilab" accelerator for scientists (together with E. Lorentzatou, and Th. Xanthopoulos) [in Greek], Hellenic Federation of Enterprises (SEV) (Ekinisilab final preview [in Greek])

Designed innovative solutions for customer-centric holiday packages, by applying interdisciplinary heuristic methods to reduce existing algorithmic complexity

Coordinated meetings with two other members and mentors, and managed tasks for members, located across Greece

Performed market research and collaborated with other members to enter immature market

Presented our innovative solutions to over 60 attendants and negotiated with investors

Participation in "Courses in Business Administration" offered by Athens Laboratory of Business Administration (ALBA), as part of "Ekinisilab" project, Athens, Greece (Sep - Nov 2014, expenses covered by Hellenic Federation of Enterprises)

Implemented novel approaches to understand perceived Quality of Experience of users in telecommunications industry for research projects of 0.5M £, funded by EU and Google Faculty Research Award

Developed a testbed for power consumption of mobile applications and analyzed the relevant results, and a testbed for indoor localization

Assisted in design and analysis of tariff plans’ structure and utility maximization for both providers and subscribers

Analyzed functional requirements, involved in market research, mentored undergraduate students

Contributed to field studies to elicit feedback from real users in a controlled environment

Participated in exhibition of FORTH mobile applications at TEDxHeraklion, Heraklion, Greece (Feb 2015)

Publications:

• N. Louloudakis, V. Theodosiadis, H. Kondylakis, and K. Stefanidis. NaviSoc: A Socially Enhanced Real-time Navigator. In BASNA 2014 (in conjuction with ICDM 2014), Shenzhen, China (Invited talk at "Bringing Space down to Earth - Smart Cities Services", InnovAthens Hub, Athens, Greece (Oct 2014))

• C. Meidanis, M. Dramitinos, V. Theodosiadis, N. Rapousis, and M. Papadopouli. A preliminary analysis of tariff plans for MNOs and MVNOs. Technical report, Dec. 2014

• M. Katsarakis, V. Theodosiadis, and M. Papadopouli. On the Evaluation of a User-centric QoE-based Recommendation Tool for Wireless Access. Technical Report FORTH-ICS/TR-445 - May 2014 (A shorter version has been published in ACM SIGCOMM Workshop on Crowdsourcing and crowdsharing of Big (Internet) Data (C2B(I)D, co-located with ACM SIGCOMM' 15), London, UK)

M. Katsarakis, V. Theodosiadis, M. Dramitinos, and M. Papadopouli. u-map: a User-centric QoE-based Recommendation Tool for Wireless Access Markets. In ACM S3 (in conjuction with ACM MobiCom) 2013, Miami, FL, USA

M. Katsarakis, V. Theodosiadis, M. Dramitinos, and M. Papadopouli. A User-centric QoE- based Recommendation Tool for Wireless Access. In ACM S3 (in conjuction with ACM MobiCom) 2013, Miami, FL, USA

Algorithms and Complexity course, Computer Science Department (Spring 2016)
Supervisor: Prof. Ioannis Tollis
Main responsibilities: Answered students' questions, assisted in grading (assignments, final exams)

Data Structures course, Computer Science Department (Fall 2015)
Supervisor: Prof. Panagiota Fatourou
Main responsibilities: Answered students' questions, provided tutorial / C & Java source code for project, assisted in grading (assignments, project, midterm, final exams)

Applied Mathematics for Engineers course, Computer Science Department (Spring 2015)
Supervisor: Prof. Georgios Tziritas
Main responsibilities: Assisted in grading (assignments)

Introduction to Computer Science course (Programming Language C), Computer Science Department (Fall 2014)
​Supervisor: Asst Prof. Polyvios Pratikakis
Main responsibilities: Answered students' questions, assisted in grading (assignments)

Calculus II course, Computer Science Department (Spring 2014)
Supervisor: Prof. Konstantinos Athanasopoulos
Main responsibilities: Provided tutorial for assignments