Valentin is available for hire
Hire ValentinValentin Stoican
Verified Expert in Engineering
Software Developer
Location
Amsterdam, Netherlands
Toptal Member Since
September 19, 2019
Valentin has a demonstrated rich and diverse experience spanning enterprise business applications, DevOps, mobile development, Agile transformation, and application lifecycle management. He is specialised in containers orchestrations, CI/CD and software development. He has a good work ethic which is highly appreciated by every client who hired him.
Portfolio
Woven by Toyota, Inc - Stargate
Kubernetes, DevOps, Kubernetes Operations (kOps)
Oyu Tolgoi LLC
Kubernetes, DevOps, Azure, Docker, GitLab, GitLab CI/CD, Machine Learning
Wash - Main
Kubernetes, Amazon EKS, Helm, Terraform, Amazon RDS, AWS Global Accelerator...
Experience
Availability
Part-time
Preferred Environment
Kubernetes, Continuous Delivery (CD), Continuous Integration (CI), Git, Cloud, Linux
The most amazing...
...thing I've created was the Docker Birthday #3 app infrastructure which was capable of handling thousands of requests and testing more than 10,000 containers.
Work Experience
Kubernetes Platform Engineer via Toptal
2023 - 2023
Woven by Toyota, Inc - Stargate
- Led and coordinated L5 (former Lyft's self-driving car division) migration to a new platform.
- Contributed to various integrations and customizations of the developer portal based on Backstage from Spotify.
- Worked closely with the SRE team to define customer user journeys and, subsequently, custom metrics for measuring and monitoring the journeys.
- Managed to customize GitHub workflows and extract information in order to provide customers with more in-depth information about their pipelines and the efficiency of the Terraform modules and cloud providers' API response times.
- Collaborated with the security team and managed to identify security issues present with some or all cloud providers and implemented additional controls and configurations to mitigate them.
Technologies: Kubernetes, DevOps, Kubernetes Operations (kOps)
Kubernetes DevOps Engineer via Toptal
2020 - 2023
Oyu Tolgoi LLC
- Contributed to GitLab deployment. By successfully implementing GitLab, I introduced a version control system, fostering seamless collaboration and enabling efficient code management.
- Integrated Harbor seamlessly into the infrastructure, empowering secure and scalable container management for multiple projects.
- Worked on CI/CD pipelines. I architected robust CI/CD pipelines, leveraging industry best practices and cutting-edge tools. This automation accelerated development processes, minimized errors, and enhanced the overall quality of deliverables.
- Contributed to Tanzu Kubernetes deployment. I successfully deployed Tanzu Kubernetes, leveraging its power to scale and orchestrate applications effectively. This achievement laid the foundation for scalable and resilient deployments.
- Integrated Snyk into development workflows, enhancing security practices by identifying and mitigating vulnerabilities in the codebase.
- Introduced a centralized secrets management platform, providing a secure and auditable solution for sensitive information. HashiCorp Vault sits in the center of the infrastructure, serving secrets and integrating with most of the applications.
- Implemented ArgoCD to facilitate GitOps practices, enabling declarative and automated deployments, further enhancing efficiency and reliability.
Technologies: Kubernetes, DevOps, Azure, Docker, GitLab, GitLab CI/CD, Machine Learning
DevOps and Kubernetes Support
2022 - 2022
Wash - Main
- Set up a completely new AWS environment for deploying the main web application, reporting tools, notifications server, etc.
- Implemented a new solution to assign custom MAC addresses to Pod to be able to license the main web application. The solution uses Multus drivers to create virtual VLANs.
- Reverse-engineered deployments in the old Kubernetes cluster and created Helm charts which are now deployed to the new clusters programmatically.
Technologies: Kubernetes, Amazon EKS, Helm, Terraform, Amazon RDS, AWS Global Accelerator, Amazon EC2, Amazon Web Services (AWS), AWS NAT Gateway
DevOps Engineer
2021 - 2022
Asset Panda LLC - Main
- Designed new AWS architecture, which was reviewed and validated by AWS solution architects.
- Deployed three new environments using Terraform and Terragrunt: Development, Production, and DR.
- Set up applications repository and deployment pipelines using Helmfile, AWS Codebuild and CircleCI.
- Designed and implemented a platform that had no downtime nor an incident in eight months' time. This was a major improvement considering that the previous platform went down every other week.
Technologies: Kubernetes, Amazon Web Services (AWS), Amazon EKS, GitHub, Amazon RDS, AWS Global Accelerator, Terraform, Terragrunt, GitHub Actions, DevOps, Amazon Firewall, Amazon EC2, AWS DevOps, AWS NAT Gateway
Kubernetes Expert
2019 - 2020
Capgemini (McDonalds Account)
- Vetted all deployments and changes before going to production as the Kubernetes expert and ensured all platforms were stable.
- Deployed all Kubernetes clusters in AWS using kops.
- Delivered projects including Sync certificates using S3 bucket, ConfigMaps and sidecar containers, Calico IPAM blocks cleaning, zero downtime Kubernetes upgrade, and Newrelic deployment using Terraform and Helm.
Technologies: Amazon Web Services (AWS), Helm, Terraform, Continuous Delivery (CD), Continuous Integration (CI), Docker, Kubernetes, DevOps, Amazon EC2, AWS NAT Gateway
DevOps Architect and Engineer
2018 - 2019
Credendo
- Drafted a new DevOps landscape taking into consideration business, compliance, security, and operational requirements. The new architecture brings all new projects promoted by CNCF. Rancher orchestrated Kubernetes clusters running microservices.
- Streamlined CI/CD pipelines, defined the roles and responsibilities, and provided best practices guidelines.
- Automated and secured deployments performed using Ansible and Vault.
- Implemented a single sign-on solution ADFS integrated using Keycloak.
- Designed the monitoring of microservices and alerting using Prometheus and Grafana.
- Based the log aggregation solution on Fluentd, Splunk, and ELK stack.
- Deployed and managed operations for MySQL and SAP Sybase.
Technologies: Sybase, MySQL, Splunk, Fluentd, ELK (Elastic Stack), Grafana, Prometheus, Keycloak, Ansible, Kubernetes, Rancher, DevOps, Amazon EC2, Amazon Web Services (AWS)
DevOps Continuous Integration Engineer
2017 - 2018
ING Bank
- Continuously improved the performance, scalability, and availability of CDaaS platform. The platform consists of hundreds of Docker containers managed with Mesos and Marathon.
- Supported and maintained the storage solution Ceph where RADOS Block Devices (RBD) are stored.
- Mounted block devices as persistent storage for Docker containers using Rexray and Libstorage drivers and API. Also contributed to the Libstorage GitHub project.
- Developed a Jenkins plugin that publishes build information on Kafka bus.
- Ensured configuration management of all VMs using Puppet and Ansible.
- Oversaw integrations and automation using Python, Go, and Node.js.
- Implemented secret management using Vault (Hashicorp).
- Troubleshot the E2E CD/CI pipeline and provided guidance for CI/CD processes, rolling upgrades, etc.
Technologies: Python, Go, Vault, Ansible, Puppet, Ceph, Marathon, Mesos, Docker, DevOps, Amazon EC2
DevOps CI/CD Engineer
2016 - 2017
Bank Mendes Gans
- Migrated, redesigned, and implemented the development pipeline.
- Integrated and optimized development applications like Git, Jenkins, Artifactory, Sonar, Fortify, Jira, Crucible, and Fisheye.
- Utilized the knowledge as a certified scrum master and made use of Docker containers and Kubernetes to agilely streamline and accelerate the development process.
Technologies: Kubernetes, Docker, Crucible, Jira, HP Fortify, Sonar, Artifactory, Jenkins, Git, Atlassian Fisheye
Technical Consultant
2015 - 2016
Proximus
- Designed and developed a new AAA platform for external customers. The deliverable consisted of a distributed TACACS as a service platform built with Active Directory (AD), the Lightweight Directory Access Protocol (LDAP), and MongoDB.
- Deployed AAA platform components using Ansible scripts.
- Contributed to the platform that was used to manage most of the network devices from the customer's core network.
Technologies: Ansible, Keepalived, HAProxy, Gunicorn, Flask, MongoDB, LDAP, Azure Active Directory
DevOps Engineer
2015 - 2015
KPN
- Managed 200+ Red Hat servers via Red Hat Satellite to configure turn-key solutions for internal customers with specific configuration, storage, network, and deployed services requirements.
- Worked for the capacity management department to develop custom KPIs in Cacti. Implemented custom system and service checks in Nagios.
- Utilized Agile methodologies (Scrum, Kanban) to design and roll out an end-to-end configuration management system based on CFEngine, Elasticsearch, Kibana, and syslog-ng.
- Implemented automated testing and deployment using Jenkins, Git, Vagrant, and KVM.
Technologies: KVM, Vagrant, Git, Jenkins, Syslog-ng, Kibana, Elasticsearch, CFEngine
Experience
Created Docker Birthday Number Three App
The infrastructure was able to handle thousands of requests and test more than 10,000 Docker images published by participants. It served 1,180 people who completed the assignment from 220 locations worldwide.
Education
2002 - 2007
Master's Degree in Electronics, Telecommunications and Information Technology
Universitatea Politehnica Bucuresti - Bucharest, Romania
Certifications
JANUARY 2022 - JANUARY 2025
Certified Kubernetes Security Specialist
Cloud Native Computing Foundation
OCTOBER 2020 - PRESENT
Certified Kubernetes Application Developer
The Linux Foundation
OCTOBER 2019 - PRESENT
Certified Kubernetes Administrator
Cloud Native Computing Foundation
OCTOBER 2017 - PRESENT
Neural Networks and Deep Learning
Deeplearning.ai
AUGUST 2017 - PRESENT
Certified RancherOS Partner and Consultant
Rancher Inc.
APRIL 2016 - PRESENT
Certified Scrum Master
Xebia
APRIL 2014 - PRESENT
Financial Markets
Yale
DECEMBER 2013 - PRESENT
Inspiring Leadership through Emotional Intelligence
Case Western Reserve University
JULY 2012 - PRESENT
ITIL Foundation Certificate in IT Service Management
BCS
Skills
Libraries/APIs
Jenkins Job DSL, Jenkins Pipeline, XL Release REST API, Terragrunt
Tools
Terraform, Amazon EKS, Jenkins, GitLab CI/CD, Artifactory, Git, GitHub, Jira, Confluence, Bitbucket, Amazon Firewall, Kibana, Syslog-ng, Vagrant, Ansible, Keycloak, Grafana, ELK (Elastic Stack), Fluentd, Splunk, Mesos, Puppet, Vault, Sonar, HP Fortify, Crucible, Keepalived, Helm, Azure Kubernetes Service (AKS), Google Kubernetes Engine (GKE), SonarQube, Subversion (SVN), Bamboo, GitLab, Atlassian Fisheye
Paradigms
Continuous Delivery (CD), Continuous Integration (CI), DevOps
Platforms
Linux, Kubernetes, Rancher, Docker, Amazon Web Services (AWS), Amazon EC2, KVM, Azure, DigitalOcean, Harbor
Storage
Elasticsearch, MySQL, Sybase, Ceph, Azure Active Directory, MongoDB, Google Cloud
Languages
Python, Bash, Go, SQL, Java, Groovy
Frameworks
CFEngine, Marathon, Flask
Other
AWS DevOps, AWS NAT Gateway, Argo CD, Scrum Master, Cloud, Prometheus, LDAP, Gunicorn, HAProxy, Information Technology, Amazon RDS, AWS Global Accelerator, GitHub Actions, Kubernetes Operations (kOps), Machine Learning, Investments, Leadership, IT
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