Amstelveen, North Holland, Netherlands
• Over 15 years of experience in ICT environments, working with both operators and vendors across multiple countries in operational, deployment, engineering, and architecture roles. • Proficiency with Amazon AWS cloud (AWS Solution Architect Associate certified) • Extensive hands-on experience with IT datastores (Kafka, Druid, OpenSearch) and Kubernetes • Deep expertise in Zscaler ZPA security product • Deep expertise in network automation (Ansible) • Expertise in Infrastructure as Code (IaC) and platform provisioning tools, including Terraform, Terragrunt, and Crossplane • Solid experience with CI/CD tools and workflows, including Git, Jenkins, and ArgoCD • Strong programming background in C/C++ and Python • Solid understanding of Google GCP cloud services • In-depth knowledge and practical experience with VMware SDDC architecture, including NSX-T and vCenter. • Extensive experience with TCP/IP networking technologies (switching, routing, DNS, IPSec) – engineering & troubleshooting skills • Deep understanding of cellular/mobile architectures (from 2G to 5G) • Good understanding of NFV (virtualization) environments in telco networks • Broad experience with Huawei and Ericsson products and solutions • Proven experience in consultancy within market of telecom providers • In depth 3GPP/GSMA/IETF/ETSI specifications literacy in areas of expertise • Theoretical knowledge of a wide variety of machine learning (ML) and statistical methods
Initially part of the ET Ops team focusing on DevOps activities related to the ZPA product, later transitioned with the team to the One Platform Shared Data Services team. Key responsibilities include: • Automating network operations using Ansible, Python, and Linux shell scripting • Managing software deployments across all environments (high and low Zscaler clouds) • Network/platform troubleshooting • Provisioning/engineering Zscaler network/platform components (e.g., logging zones, datastores) using Terraform, Ansible, and Crossplane across public clouds (AWS, GCP) • Driving network performance optimization within Zscaler infrastructure
Contributed to both the Liberty Global account (outsourced to Accenture) and the E2E Solution team’s core offerings. Responsibilities included: • Designing and building networks for Accenture’s IT and telecom clients • Supporting network troubleshooting and service restoration • Contributing to strategy and architecture functions across core network and IT stack • Assisting in the virtualization and cloud migration of legacy network infrastructures • Solution architecting and assisting with pre-sales activities
Worked in LG NSO Cloud Team on design & implementation activities for LG multi-cloud architecture which was based on AWS, GCP and VMware vSphere/NSX. My primary responsibilities were: - engineering and implementing changes on Liberty multi-account setup on Amazon AWS - engineering and implementing changes on Liberty software defined data centers based on VMware - discussing and improving hybrid connectivity in LG multi-cloud and hybrid-cloud solutions - cloud automation using GitLab CI/CD pipelines
Work in LG Mobile Design & Build team on architectural and design activities for Liberty Global Pan-European MVNO and Virgin Media UK MVNO networks. Work as lead architect on following projects: 1. Video optimization for Liberty Global mobile data subscribers 2. Signaling and user plane monitoring tool for mobile core 3. Advanced calling – based on VoWiFi/VoLTE/IMS 4. 5G rollout 5. IMS/CS/PS core vendor swap On these projects my responsibilities were following: • Analysis of business requirements set by product team • Creation of technical requirements for the core mobile platform to deliver the required services • Technical/architectural discussions with vendors on understanding the requirements • Liaising with all involved parties (vendors and corporate teams) on creation of HLD & LLD docs as well as definition of acceptance criteria • Liaising with all involved parties during the project deployment phase • Aligning on acceptance tests book with vendors and acceptance tests execution • Perform all handover activities to UPC/LG Ops team Contributing design role in other projects lead by the team as well as providing support to Mobile Network Ops team.
Work as 3rd line support engineer and architect in Liberty Global MVNO design&build department. My responsibilities are: • Support of mobile operations for launched networks (NL, CH, AT, HU) • Design gap analysis for the launched MVNO networks and technical and commercial discussions in order to solve the gap or malfunction of the MVNO core platform • Design and build of new MVNO countries, new features and functionalities etc.
• Served as main professional for IMS core platform. Scope of responsibilities was diverse and included: everyday maintenance, long-term planning of network and services, finding system errors, error solving, everyday contacts with network products vendors, new features testing etc. • Provide everyday expertise during system exploitation. • Provide support for interworking with other parts of the system, i.e. billing, interconnection, network security system, peer systems etc. • Provide knowledge in making offer to customers, creating the service model for customers. Work in collaboration with the sales departments to present the services to customers and meets the customer needs. • Take part in plenty of working groups, including those for CAPEX and OPEX saving. • Integration testing, functional testing and Acceptance testing of the new Core Network Nodes like Softswitch class 5 and class 4. Validation and functional testing of IMS nodes: CSCF (P-/I-/S-), HSS, Centrex server (Broadsoft AS/WS/NS/MS). • Configuration, commission, operation and maintenance for Huawei packet-SBC (session border controller). • Providing support for installation engineer of SIP and RGW terminals. • Performing of periodic maintenance schedules and pro-active measures for health and status check of the system. • Acceptance testing of new nodes MGWs, AGWs (MSAN) and Management platform (traffic case tests, feature test recovery and redundancy tests). • Detail testing and commissioning of SIP Business Trunking service • Planning and dimensioning of IMS platform for all layers: o Access layer element(CLF, NACF, PCRF) capacity planning o Core layer element (P/I/S-CSCF, HSS) capacity planning • Take part in plenty of working groups, including those for CAPEX and OPEX saving.