Tezcan Dilshener-Solution Architect / Project Manager
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Experience
Solution Architect / Project Manager
German Football Association
- Overall responsibility for the project lifecycle from scope definition to completion
- Close collaboration with platform teams, IT leaders, and external service providers
- Application of SAFe principles and structured sprint work
- Creation of a migration roadmap with clear milestones
- Monitoring of the lifecycle: onboarding, repository migration, replication of permissions, and system tests
- Visualization of the architecture with PlantUML and Gliffy as well as documentation in Confluence
- Regular status reports and running knowledge transfer sessions
Senior Cloud Solution Architect
ING Bank
- Design of cloud infrastructure building blocks for distributed applications in internal, DMZ, and internet-based deployments
- Creation of detailed network design documents covering load balancing, security, DevOps pipelines, logging, and high availability models
- Documentation of architecture blueprints based on TOGAF principles in Confluence and PlantUML/draw.io
- Definition of network segmentation strategies including firewall rules and zero-trust principles
- Technical consulting for internal application teams and development of practical delivery strategies
- Presentation of solution concepts in the TOGAF Governance Committee and conversion into reusable reference architectures
- Successful migration of multiple third-party applications to the private cloud with standardized reference architectures and faster go-live approvals
Solution Architect / Project Manager
Telefónica Germany
Translation of audit findings into structured user stories and domain-specific action plans
Leading the cross-functional implementation of technical and organizational controls
Implementation of GDPR-compliant data deletion, hardening, and closure of encryption and monitoring gaps
Ensuring business continuity (BCP) and disaster recovery (DR) in line with group standards
Identification and assessment of AI-relevant use cases as part of the digital transformation strategy through stakeholder interviews
Tracking actions in Jira/Confluence with management visibility
Definition and management of the migration of core prepaid IT systems into cloud and data center infrastructures
Coordination with stakeholders and service providers for architectural validation and technical alignment
Securing compliance through Nessus and Kiuwan for vulnerability analysis and remediation
Building an AI trend radar including analysis of LLMs, Azure OpenAI Services, LangChain integrations, and Hugging Face components
End-to-end management of the new development and relocation of a highly available retail application
Establishment of agile methods with solid sprint planning and cross-functional collaboration
Senior Cloud Solution Architect
ING Bank
- Design of cloud infrastructure building blocks for distributed applications in internal, DMZ, and internet-based deployments
- Creation of detailed network design documents covering load balancing, security, DevOps pipelines, logging, and high availability models
- Documentation of architecture blueprints based on TOGAF principles in Confluence and PlantUML/draw.io
- Definition of network segmentation strategies including firewall rules and zero-trust principles
- Technical consulting for internal application teams and development of practical delivery strategies
- Presentation of solution concepts in the TOGAF Governance Committee and conversion into reusable reference architectures
- Successful migration of multiple third-party applications to the private cloud with standardized reference architectures and faster go-live approvals
JEE Senior Solution Architect / Team Lead
Volkswagen
- Analysis and development of concepts for loosely defined requirements in order management
- Assessment of customization needs for the cloud operation of IT applications
- Process optimization from fulfillment to reconciliation (O2C)
- Coordination of the cloud migration architecture design with the TOGAF Architecture Guild Group
- Data modeling and interface mapping at database level with TOGAF
- Alignment with the Product Owner on prioritization and scope definition
- Expert-level consulting for developers
IT Service Manager / Project Team Lead / Coordinator / Systems Engineer
BMW Group
- Responsible for the daily operation of the Atlassian tool chain (Bitbucket, Confluence, Jira, Crowd)
- Monitoring on-prem and cloud ATC tools, including AWS configuration and troubleshooting
- ITSM incident management with ServiceNow to ensure KPIs, SLAs, and user satisfaction
- Jira and Confluence administration to provide the ATC tools
- Process documentation and follow-up with Atlassian Premier Support
- Coordination with customers to meet sprint goals and requirements
- Technical lead of the Polish offshore development team
JEE Senior Architect / Team Lead / Coordinator
Huawei
- Leading the further development of an IAM solution based on ABAC for IoT smart homes
- Improving the security-by-design process and security engineering
- Developing a dynamic authorization service with XACML V3.0 and continuous monitoring
- Implementing a content protection application with video streaming, light sensors, and AI-based object recognition
- Setting up and managing development, test, and demo environments
- Supporting and training product line engineers during technology transfers
- Leading offshore development teams in Italy, Israel, and China
JEE Senior Architect / Team Lead
Telefónica
- Further development of a custom prepaid IT application
JEE Architect / Project Team Lead
T-Systems
- Further development of an application for managing used car sales for Mercedes
JEE Senior Developer / Architect
TNG at Telefónica/O2
- Further development of a CRM application for O2 customers
JEE Senior Developer / Architect
UniCredit
- Implementation of the BGH requirement to convert checking accounts into protected accounts
JEE Senior Developer / Architect
Siemens
- Redesign and further development of the GPM application
JEE Senior Developer
Deutsche Pfandbrief Bank
- Further development of a platform for migrating business data from HOST to SAP systems
JEE Senior Developer
Loyalty Partners
- Development of a platform for international customer loyalty and bonus programs
JEE Senior Developer
HVB-Unicredit
- Production support, maintenance, and implementation of various Java projects
JEE Developer
KVB Versicherung
- Development of an online billing portal with automated review and correction steps
JEE Developer
BayernLB Bank
- Development of an early warning system for non-performing loans
JEE Developer
Siemens Logistik
- Further development of an application for managing export and import lists
JEE Developer
HP/Compaq
- Implementation of a central campaign management system
JEE Developer
ComTelko
- Development of a web-based eCommerce sales reporting system
JEE Developer
BayernLB Bank
- Migration to IBM WebSphere and WSAD
JEE Developer
RemoteHotels
- Development of a controller/filter framework for validation and dispatch mechanisms
JEE Developer
MAN Nutzfahrzeuge
- Development of a web-based maintenance and planning application
JEE Developer
SATZ Systemhaus
- Development of a web-based job search, selection, application, and registration application
Industry Experience
See where this freelancer has spent most of their professional time.
Experienced in Banking and Finance, Telecommunication, Automotive, Information Technology, Transportation, and Sport.
Business Area Experience
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Experienced in Information Technology, Product Development, Project Management, Customer Service, Supply Chain Management, and Operations.
Summary
Enterprise Cloud & AI Solution Architect with over 20 years of experience leading complex digital transformation programs in telecom and finance. Proven expertise in designing scalable, secure, and standards-compliant architectures on private and public cloud platforms. Hands-on experience with integrating generative AI, cloud migrations, compliance, and developing reference architectures. Skilled at aligning technical implementation with governance models, stakeholder needs, and the constantly evolving AI/ML landscape.
Skills
It Experience: Since 1999
Roles: Project Management, Architect, Software Specialist
Industry Expertise: Insurance, Finance, Banking, Automotive, Telecommunications, Logistics, It, Public Sector
Development Of Scalable Ai/Ml Systems And Architectures; Development & Leadership Of Complex Cloud Architectures At TelefóNica, Dfb & Ing – Including Security Concepts, Scalability, And Performance Optimization
Generative Ai: Llms, Rag, Vector Databases, Fine-Tuning; Practical Experience With Modern Genai Stacks: Integration Of Vector Search, Ci/Cd-Driven Prompt Engineering, And Security Audits
Cloud-Native Architectures (Aws, Azure, Gcp); Proven Deep Know-How With Aws & Azure In Production Migrations And Architecture Projects (E.G. TelefóNica, Ing, Bmw)
Ai & Dataops Tooling: Mlops, Langchain, Llamaindex, Ray; Use Of Devops/Mlops Principles With Gitlab, Pipelines, Jira, Nessus, Kiuwan, As Well As Secure Integration Of Analytics & Security Tools
Data Protection, It Security, Ethics In Ai Projects; Implementation Of Gdpr-Compliant Architectures And Security Compliance (Cis, Nist) In Cloud Migrations & Security-Sensitive Projects
Cross-Functional Teamwork (It, Research, Production); Many Years Of Experience Leading Multinational Teams (E.G. China, Israel, Poland) And Bridging It, Business & Research
Technology Scouting & Trend Evaluation; Continuous Learning & Research: Phd In Software Development, Teaching In Digital Business & Cloud Innovation, Technology Consulting
Llm Integration & Rag Systems: Architecture Of Distributed Systems With Vector Search (E.G. Lucene, Faiss), Retrieval-Augmented Generation, Model Wrapping & Evaluation.
Generative Ai Platforms: Experience With Market-Leading Tools & Providers (Openai, Aws, Azure, Etc.).
Ai/Ml Architecture: Design & Implementation Of End-To-End Ai Systems In Production Multi-Cloud Environments Incl. Devsecops Integration.
Cloud & Devops: Solid Cloud Architecture Expertise (Aws/Otc/Ipc), Ci/Cd Pipelines, Observability & Governance Frameworks.
Mlops & Ai Toolchains: Integration Of Mlops Tools Such As Langchain, Llamaindex, Ray, Gitlab Pipelines, Jfrog, Artifactory, Sast/Sca Tools.
Data Ethics & Security: Establishment Of Security Standards, Audit Processes, And Ethical Guidelines For Ai Projects.
Research & Innovation: Active Involvement In New Ai Solutions, Participation In Research Projects, And Teaching In The Area Of Ai & Strategy.
Frameworks: Soap, Rest, Swagger – Webservices; Hibernate – Persistence Framework; Spring Boot – Spring Framework; Thymeleaf – Ui Model View Controller Framework; Lucene – Vector Search Model Api; Openapi, Embeddings, Llm, Rag Concepts; Junit, Jgiven – Test Frameworks; Huggingface, Pytourch, Bert – Ai Frameworks; Arc42 – Documentation Framework
Programming Languages: Java – Jee, Python3, Cobol, Rpg
Operating Systems: Windows, Linux, Macos, Ibm As/400 & Os/390
Methodology: Scrum, Safe, Extreme-Programming; Tdd / Bdd – Test/Behaviour Driven Development; Itil / Itsm – Service Management; Archimate – Enterprise Modelling Foundation
Products: Atlassian Jira And Confluence – Life Cycle; Docker, Vmware – Containerisation Engines; Otc – Open Telekom Cloud; Aws - Ebs / Ecs – Elastic Beanstalk / Container; Ing Private Cloud; Eclipse, Android Studio, Visual Code – Ides; Weblogic, Ibm Websphere - Application Servers; Plantuml, Draw.Io – Uml Tools; Soapui, Postman – Webservices Test Tool; Sonarqube, Nessus, Kiuwan - Quality/Security
Messaging-/Bus Systems: Event Driven (Sqs, Sns); Kafka, Ibm Mq
Version Control: Bitbucket, Gitlab - Version Control Systems; Maven, Gradle – Build Management Tools; Ci/Cd – Continuous Integration / Deployment
Databases: Qdrant, Lucene Vectordb, Oracle, Ibm Db2, Hsqldb, Apache Derby
Languages
Education
The Open University
Philosophy of Doctorate in Software Evolution and Maintenance · Software Evolution and Maintenance · Milton Keynes, United Kingdom
City University
Master of Science in Business Systems, Analysis and Design · Business Systems, Analysis and Design · London, United Kingdom
Southbank University
Graduate Diploma Honours Degree in Computer Science · Computer Science · London, United Kingdom
Certifications & licenses
AWS Certified Cloud Practitioner – Course Completion
AWS Cloud Solution Architect – Course Completion
ArchiMate Enterprise Architecture Modelling Framework – Course Completion
Azure Architect Design – Course Completion
Azure Cloud Architecture Technologies – Course Completion
Private Pilot Certificates – (Single Engine Land)
Certified Master Coach: Motivation and Solution-Oriented Techniques
Statistics
Experience
Global Experience
Expertise
Qualifications
Profile
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