Ioannis Sermetziadis Email & Phone Number

Iráklion, Crete, Greece

Iráklion, Crete, Greece

Build a Cloud Native platform to support the Code BGP Platform SaaS service.Achievements:- Improve internal observability stack with distributed traces- Add application metrics to the observability stack- Add alerts for application and infrastructure metrics- Setup Redis Cluster using K8s operator- Configure and debug GKE cluster autoscaler to optimise K8s cluster autoscaling- Configure vertical autoscaling for K8s pods to optimise costs of service resources- Integrate OTeL Go libraries and SDKs for collecting application metrics

Building a SaaS product for network operations automation, using Go and Cloud technologies.Tasks:- Apply Domain-Driven design methodology- Apply patterns of Event-Driven architecture- Apply 12Factor micro-service principles- Apply dependency inversion (DI), abstract factory and other design patterns in Go that promote separation of concerns and code test coverage- Present in software design meetings for defining the domain separation to micro-services- Advocate for Go language best practices and keep-up with Go updates- Advocate for GitOps for declarative deployments

Iráklion, Crete, Greece

Building event-driven micro-service based fintech systemMaintaining internal micro-services library for building uniform, robust and performant micro-servicesUtilizing modern techniques for monitoring, operating and deploying a highly distributed systemTechnologies: Go 1.11+, HTTP 1.1, WebSocket, Couchbase, Kafka, Docker, Kubernetes, Jenkins, Spinnaker

Athens, Attiki, Greece

Software Design for BSS and OSS systems following the TMF and MEF standardsData model design using TMF SID FrameworkService Bus solution architecture and implementation using micro-service architectureSoftware development team leadingTechnologies: SpringBoot 1.4+, Tomcat 8, Apache Camel 2.18+, RedHat Openshift 2 & 3

Athens, Attiki, Greece

Development of software systems in the domain of chemicals for European Chemical Agency, using Waterfall methodology mixed with Agile practices

Athens, Attiki, Greece

Design of user flowsIntegration with external services, Amazon S3, Authentication providers (LinkedIn, Facebook) & chat servicesDevelopment tasks & team organization, using ticketing systemsDevelopment using Play Framework 2.2+, Spring Framework, Hibernate 4.x & JPA 2.0, Atmosphere Framework.

Athens, Attiki, Greece

Design and implemention of an integration service for exposing a 3rd-party database view as a Web Service in SonicESB. Technologies: JBoss EAP 6.2, EJB 3.1, JAX-RS 2 & Rest Easy 2.2+, JBoss Generic JMS Resource Adapter.

Athens, Attiki, Greece

Projects/responsibilities:Participated in the implementation of an e-POS application for the Albanian Media Communications (AMC) using cutting-edge web technologies and enterprise system architecture. The system integrates with Siebel CRM, a Billing System, and other external systems, through a Service BUS, in order to perform the order submission, orchestration and management. Technologies: Spring Framework, Hibernate, GWT, Oracle Weblogic 10.3.5, JAX WS, EhCache, JMS, JUnit 4.Developed an SMPP client module for a ESB system to integrate with an SMSC for delivering and receiving SMS messages. The module emphasized on providing high throughput and 100% availability for providing the best prossible service to the systems that connect to it. Technologies: Enterprise JavaBeans 3, Message-Driven Beans, JMS, Weblogic.Participated in the design and development of an Android Application for a big Telecom Service provider. Design the REST API of the backend system using Swagger Framework & implemented a mocking infrastructure for testing the mobile application integration with its backend system. Integration with Google Analytics, Google Cloud Messaging & Google Maps.

Iráklion, Crete, Greece

Mobile applications design, implementation & automation testing for the Android Platform. Worked on both feature rich application as well as presentation-oriented applications on the Android Platform.

Iráklion, Crete, Greece

Mobile marketing platform design, implementation and testing.

Athens, Attiki, Greece

RealNetwork streaming & media technologies training.Helix server installation & setup.Web service administration.

Msc, Computer Science

Activities and Societies: Tardis Project (http://www.tardis.ed.ac.uk/wiki/Main_Page)Specialization: Database Systems & Parallel Systems.

Bsc, Management Science And Technology

Activities and Societies: BCTeam : Intercourse programming team for Java programming assignments and projects.Management Modules.