Oguzhan Burak Tekin, Developer in Istanbul, Turkey
Oguzhan is available for hire
Hire Oguzhan

Oguzhan Burak Tekin

Verified Expert  in Engineering

Solution Consultant and Developer

Istanbul, Turkey
Toptal Member Since
October 26, 2022

Oguzhan is a senior solution consultant with over 25 years of experience across the telecommunications, web hosting, banking, government, manufacturing, and research industries. With a comprehensive background and an extensive skill set, he contributed to HPC, AI, ML, analytics, virtualization, ERP, video surveillance, security, network, and convergence projects. Oguzhan specializes in designing and implementing HPC systems with hundreds of concurrent users.


BeeGFS, Cluster Management, CentOS, Clustering, Slurm Workload Manager, xCAT...
Blu World
Networking, Troubleshooting, Servers, Virtual Machines, Architecture...
St Jude Childrens Research Hospital - Bioinformatics
Azure, Data Engineering, High-performance Computing, File Systems...




Preferred Environment

Linux, BeeGFS, HPCC Systems, Slurm Workload Manager, Lustre, DRBD, Proxmox, SR-IOV, Containers, FreeIPA

The most amazing...

...2PB Lustre parallel file system I've redesigned from scratch gave out 30% more throughput than the installation based on the hardware vendor's blueprint.

Work Experience

HPC Solutions Manager

2021 - PRESENT
  • Designed and implemented HPC systems for numerous universities, research centers, and manufacturing, mining, and aerospace companies.
  • Applied the newest technologies to convert classical HPC systems into highly managed out-of-the-box systems, improving user experience.
  • Used technologies like hardware and software virtualization, SR-IOV, containers, hyperconvergence, NVMe caching, clustering, and DRBD replication to increase cluster performance and availability.
  • Upgraded multiple HPC systems from unsupported operating systems to new-generation LTS Linux distributions to extend the life of HPC systems and deliver new applications.
  • Led the implementation of high-capacity and high-performance Lustre and BeeGFS file systems.
Technologies: BeeGFS, Cluster Management, CentOS, Clustering, Slurm Workload Manager, xCAT, Proxmox, GPU Computing, Azure, Data Engineering, Lustre, High-performance Computing, Networking, Servers, Troubleshooting, Virtual Machines, Dell PowerEdge Servers, Performance Cluster Manager, Compilers, Python, R, Rocky, Debian, Ubuntu, Gentoo, GCC, CMake, Environment, LDAP, Fractional CTO

Network Engineer

2023 - 2023
Blu World
  • Engaged urgently on several major server and cloud infrastructure issues that affected operations.
  • Fixed problems effecting the operability of the storage system, re-established accessibility of data, optimized storage configuration to prevent additional capacity outages, and maintained hardware to resolve other issues.
  • Solved problems with the firewall that stopped communications and re-established VPN connections to make the system operational for remote connections.
  • Resolved other issues and provided necessary recommendations to prevent performance issues.
Technologies: Networking, Troubleshooting, Servers, Virtual Machines, Architecture, PowerEdge VRTX, Dell PowerEdge Servers

Expert Data Consultant

2022 - 2022
St Jude Childrens Research Hospital - Bioinformatics
  • Worked on the performance improvement of the HPC system on Azure, diagnosing the system, identifying bottlenecks, and advising improvement areas.
  • Implemented a Grafana-based monitoring system and ran thorough performance tests to pinpoint environmental facts that reduce performance.
  • Improved availability of BeeGFS parallel file system on Azure.
Technologies: Azure, Data Engineering, High-performance Computing, File Systems, Cloud Storage, BeeGFS

Country Manager

2020 - 2021
Qmoniqs Software
  • Helped enterprises with tailored digital transformation solutions on the modernization journey for analytics and data science, data management, robotic process automation, social media services, and mobility services.
  • Developed new business opportunities in Türkiye for custom-designed applications.
  • Converted ideas into projects, created the workflows towards the MVP stage and led the solution architects on the designs.
Technologies: Business Development, Business to Business (B2B), Software Design, Azure

Senior Solution Consultant

2008 - 2019
  • Owned the market growth of the x86 server product portfolio, increasing market share from 3% to 47%.
  • Managed datacenter computing projects in the unnamed account whitespace providing US$200,000 to US$10 million in revenue, and designed hundreds of enterprise computing projects.
  • Helped design and implement new business processes to improve profitability, sales cycles, and logistics in indirect markets.
  • Led projects on various subjects like HPC, AI, big data analytics, Hadoop, machine learning, deep learning, SAP HANA, SQL, Oracle, HCI and virtualization, hybrid cloud and SDDC solutions, surveillance and video analytics, and SDS–Ceph, vSAN, S2D.
Technologies: SAP HANA, Clustering, Virtualization, HPCC Systems, Video Surveillance, Databases, Business Development, Business to Business (B2B), Azure, Data Engineering, Lustre, High-performance Computing, Networking, Servers, Troubleshooting, Virtual Machines, Dell PowerEdge Servers, PowerEdge VRTX, Fractional CTO

System Engineering Manager

2003 - 2007
D-Link Global
  • Led the technical business development for backbone, LAN, wireless, xDSL, VPN, and VoIP product lines and introduced more than 200 products into the market.
  • Collaborated with R&D in the design of new products and PoCs.
  • Worked closely with clients to create RFPs for public tenders, developing many winning strategies.
Technologies: Networking, VoIP, Firewalls, Wireless Systems, Wireless Protocols, LAN, WAN, VPN, Troubleshooting, Virtual Machines, Fractional CTO


I fully redesigned and reinstalled an HPC in operation, adding future-proof functionality with almost no downtime impacting ongoing user projects during expansion. Changes were addressed to provide all management functions in a highly available setup and increase users' HPC experience. While transitioning the HPC to a new OS release to support brand new versions of HPC applications, older applications that are still required but not supported on the OS release are also kept accessible with the use of purposefully prepared containers.

Kale-Arge HPC Project

An end-to-end HPC system that I designed and implemented for CFD Analysis with Ansys of critical components of turbine engines. I used Slurm as a schedular, implemented BeeGFS parallel files system running on SSD and NVMe technology for user space and scratch, respectively, and integrated additional SAN storage space for automatic D2D backups.

TPAO Lustre Project

Two different petabyte scale Lustre parallel file system-based storage, a total of nine PB, were implemented for the HPC system running mainly Schlumberger Seismic Research Software and Omega used by the national petroleum and natural gas mining research company. An out-of-the-box, bulletproof design that was beyond the requirements was made, and extensive tests were done for data integrity in the harshest conditions. Up to 60 GB/s throughput was reached in data operations on the Lustre system.

Sabanci University | Sun HPC Project

An HPC cluster that I built for interdisciplinary academic research at Sabanci University, Istanbul. I led the project to redesign and implement the HPC system based on the OpenHPC schemas.

To use the existing hardware effectively, I created a primarily virtual environment on Proxmox VE and selected an operating system based on Rocky Linux 8.6. I used technologies like Open vSwitch, SR-IOV, and VF with Infiniband HCAs, bonding, GPU computing, Ceph, BeeGFS, and BeeOND. I also implemented NVMe caching on storage tiers for improved IO performance and a metadata service with DRBD HA and pacemaker, going beyond regular networking and hardware boundaries. For the deployment of compute nodes and other functions, I used xCAT. Finally, I equipped the system with the latest versions of GNU, Intel, PGI Compilers, Python, R, OpenMPI stack, Slurm, Environment Modules, and Singularity. The system is monitored with dashboards in Grafana and XDMoD.

Researchers have access to the system over a security gateway with SSH or RDP. Now, they can use the latest applications compiled from open-source code, containers, and commercial apps and visualize data on the HPC system without moving data back to their local environments.

METU Physics HPC Project

HPC infrastructure is redesigned comprehensively and reinstalled to create a unified cluster of Intel- and AMD-based hardware to serve researchers in the METU Physics Department in field of condensed matter, astrophysics, and other computational physics areas.

HPC - BeeGFS Performance Analysis and Improvement on Azure

The client requested an analysis of their HPC system to identify root causes that extended the time required to run HPC jobs. To understand HPC system performance, I implemented a dashboard to analyze throughput, IOPS, and metadata performance, ran thorough tests, and worked on necessary steps toward improvements.

Consultancy for BeeGFS on Azure for St. Jude Children's Cancer Research Hospital

The client was a prominent children's cancer research hospital running their research applications on Azure. They were using a 24-node BeeGFS parallel file system which was underperforming on Azure.

I reviewed configurations of the BeeGFS cluster and implemented necessary dashboards to monitor the storage system and identify the root cause of underperforming. After running the required performance tests, the root cause was identified. The server resources for the metadata system were not enough and caused saturation. The necessary advisory was provided to improve the performance long term.

Turkmenbashi International Seaport | Video Surveillance Project

As a solution consultant, I established the video surveillance of the International Port of Turkmenbashi. I designed the infrastructure of 12 data centers for video surveilling of an area of 1,200,000 square meters with more than 4,000 units of 8K cameras in QCIF format. When the project was signed, I organized the shipment of hardware, which consisted of more than 170 servers, 40 conventional storage systems, and 10PB parallel distributed storage to a fictive warehouse in Istanbul with a Lodz-Tilburg-Istanbul route. All of them were installed there to the last screw and then transferred from Istanbul to the final destination 3,500 km away in just four weeks to keep up with the project's deadline for a great opening, which leaders of multiple countries will attend.


Lustre, Python, R, Bash Script


High-performance Computing, Management


Linux, CentOS, Azure, PowerEdge VRTX, Proxmox, RStudio, SAP HANA, Debian, Ubuntu


Scientific Computing, RHEL, HPCC Systems, BeeGFS, Dell PowerEdge Servers, Clustering, Networking, Firewalls, Slurm Workload Manager, Compilers, LDAP, xCAT, Cluster Management, File Systems, Data Engineering, Servers, Troubleshooting, Virtual Machines, Fractional CTO, GPU Computing, VoIP, Wireless Systems, Wireless Protocols, LAN, WAN, AlphaFold, Mellanox Technologies, XD Metrics on Demand (XDMoD), Conda, oneAPI, Rocky Linux, IT Project Management, Vendor Management, Partner Management, Logistics, Video Surveillance, Finance, Managerial Economics, Business Development, Business to Business (B2B), Software Design, Virtualization, Cloud Storage, Architecture, SR-IOV, Containers, FreeIPA, Performance Cluster Manager, Rocky, Gentoo, Environment, NFS, InfiniBand, Training, Intel MPI, Mellanox Infiniband, Intel oneAPI, HPE Performance Cluster Manager, ANSYS, MSC Nastran, HPE PCM, Migration, Upgrades, Product Management, Marketing Management, Spectroscopy, Semiconductors


VPN, Hyper-V, GCC, MATLAB Parallel Computing Toolbox, Gurobi, PyCharm, Grafana, Intel Parallel Studio, Terminal, Pacemaker, Distributed Replicated Block Device (DRBD), CMake, OPNsense, Corosync, OpenFOAM




Data Centers, Databases, GlusterFS, DRBD, MariaDB

Industry Expertise


1998 - 2000

Master’s Degree in Business Administration (MBA)

Yeditepe University - Istanbul, Turkey

1993 - 1996

Bachelor's Degree in Physics

Middle East Technical University - Ankara, Turkey


BeeGFS Certified System Engineer


Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.


Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring