Sadegh Tabasi Email & Phone Number

Tehran Province, Iran

Snapp is the largest and fastest-growing internet company in the Middle East, offering an all-in-one solution for transportation, delivery services, and more. With over 70 million users in 287 cities, Snapp provides a range of 20 different services, setting a record of more than 1.3 billion rides in 2023, surpassing the records of companies such as Lyft.- Provided mentorship to engineers, helping them grow technically and professionally through code reviews, pairing, and knowledge-sharing sessions.- Design, implementation, and fine-tuning a new IaaS and PaaS platform based on Kubernetes, Openshift, Ceph, Openstack, and many other CNCF tools in multiple regions and Datacenters with a combined total of over 20,000 cores and 50TiB of memory.- Implemented a robust multi-tenant monitoring solution, leveraging Prometheus, Thanos, and custom developed proxies, successfully managing to handle over 25 million active time series.- Executed a seamless migration from Openshift 3.11 to Openshift 4, significantly enhancing system stability by reducing downtime by 70% and elevating our uptime from an average of 99.85% to a 99.95%, reaching our desired SLO.- Made strategic decisions on technology choices, balancing performance, scalability, and cost-effectiveness to meet business objectives.- Worked closely with product managers and other teams to translate business requirements into technical specifications and project plans.

Tehran, Tehran Province, Iran

- Deployed, Maintained, and Upgraded many Kubernetes clusters in production without downtime.- Delivered comprehensive cloud solutions and support, enhancing productivity for over 500 engineers across the organization.- Mobilized Infrastructure as Code (IaC) using Terraform for efficient provisioning, Ansible playbooks/roles for robust configuration management, and designed Helm charts for streamlined application deployments.- Established CI/CD pipelines with Gitlab‑CI and ArgoCD, increasing deployment frequency by 25% and reducing manual errors by 70%.- Changing CNI plugin of Openshift clusters without down time from openshift-ovn to Cilium, enhancing p99 latency of multiple apps by 75%.- Applied load‑balancing techniques that scaled the cluster to handle over 250K active connections and 45K RPS, resulting in a 35% increase in traffic capacity.- Reducing cloud storage costs by 30% through efficient migration of storage to Ceph-CSI, leading to an annual saving of 68,000$.- Provided a multi-tenant logging stack using Vector, Loki, OPA, and Ceph S3, capable of handling and processing over 10 TiB of logs per day.- Participating in a 24/7 On-Call rotation for high load, mission critical production cloud services

Tehran, Tehran Province, Iran

- Containerized and migrated +15 services to a Kubernetes cluster, enhancing system resilience and reducing service downtime by 40%.- Planned and advanced a comprehensive monitoring and alerting system and implemented a log forwarding mechanism to a centralized EFK stack.- Developed a robust CI/CD pipeline using GitLab CI and ArgoCD which accelerated the software release cycle.- Leveraged Ansible and Terraform for Infrastructure as Code (IaC) practices and Helm for Kubernetes application deployment.- Created comprehensive documentation and simplified workflows, enabling developers to efficiently

Tehran Province, Iran

XaaS is a premier cloud service in Iran which is the symbol combination of agility, innovation, knowledge, and experience in delivering high-tech services.- Maintained OpenStack across over 100 Linux server systems in multi‑datacenters, achieving availability and ensuring seamless data redundancy and failover capabilities.- Established HA clusters with a combination of HAProxy and Keepalived, achieving load distribution among +50 services and ensuring zero downtime during peak traffic.- Oversaw the operation and routine scaling of a Kubernetes cluster with 20+ nodes.- Designed and implemented a Python agent that automated the process of building and maintaining OpenStack instances, resulting in a 35% faster deployment time and a 60% decrease in manual errors.

Tehran Province, Iran

- Deployed and conserved OpenStack on +50 nodes using Ansible.- Set up and sustained a Ceph storage cluster with 100TB capacity, achieving 99.9% data durability and reliability over 12 months.- Provisioned and supported +30 GPU instances on OpenStack.

Teaching assistant of Dr.Mehrdad Ashtiani for Software Engineering course

Teaching Assistant of Dr.Zeinab Movahedi for Introduction of programming course

Master'S Degree, Computer Software Engineering

B.S. In Computer Engineering