Dmitrii Dunaev Email & Phone Number

United Kingdom

- Preparing applications (TypeScript and .NET) for continuous integration including setting up Docker images building, environment setup and testing including dynamic environments setup;- Services troubleshooting (based on traces, logs, exceptions and metrics for TypeScript applications);- Jenkins migration from Windows to Linux;- Monitoring setup with remote writing to Cloud Provider (Coralogix);- Infrastructure management (Terraform) for multiple environments with migration to modules;- Kubernetes clusters management (EKS) for multiple environments with the combination of Argo CD, Flux CD and GitLab CI for application deployment and Helmfile for system dependencies management.

London, England, United Kingdom

I’ve been working on this product from the pre-MVP stage, achieving the following: - Setup initial docker-compose file for development testing in early stages with all required components and Docker images building on the local machine; - Created CI/CD pipelines to build container images for the TypeScipt services and push them to private Docker images repository, deploy them using docker-compose to multiple servers using configuration management tools;- Migrated hand-deployed servers to new servers managed by configuration management tools;- 30-second unavailability issue: decreased the unreachability time to around one hour per year, which means that our application is available and fully functional around 99.99% of the time per year;- Fast design and deployment of the infrastructure: less than a week compared to the industry average of 8 weeks; - MVP launch in 4 months vs the predicted 7 due to the swift adaptation of the foundation to the developers' needs;- Migrated databases to managed clusters controlled in Infrastructure as a Code manner;- Setup centralised logging and monitoring;- Set up a VPN that allows the team to securely access internal service management tools; which ensures product security and prevents external intrusion and unauthorised changes.

Contributions to the OpenWiFi open source project:- Building automated pipelines using GitHub actions for different testing scenarios including starting tests on Cloud deployed applications, smartphones, WiFi access points and pytest testing scenarios;- Preparing open-source applications (C++ and React apps) for continuous integration including setting up Docker images building and testing with release management scenarios in mind;- Creating and supporting artifacts for Kubernetes (using Helm) and Docker- compose deployments;- Maintaining and upgrading Infrastructure tooling of project using actual tooling (Terraform, Helmfile, SOPS);- Supporting, monitoring (EFK stack, Prometheus and Grafana) and updating AWS infrastructure (AWS EKS, EC2 nodes, Load balancers, Spot instances, Cluster autoscaling, Route53 DNS management, VPCs);- Creating required tooling to automate integration, deployment and testing operations;- Supporting developers with troubleshooting and code reviews from DevOps point of view during outages and bug sessions.

Munich, Bavaria, Germany

- Ensured AWS environments remain operationally healthy whilst reducing cost and complexity via monthly/quarterly reviews;- Mitigated risks utilising technical knowledge;- Collaborated with AWS Solution Architects, Business Developers, Professional Services Consultants, and Sales Account Managers to deliver value to the enterprise customers;- Provided detailed reviews of service disruptions, metrics and detailed pre-launch planning;- Uplifted customer capabilities by running workshops and brown bag sessions.

Hamburg, Germany

- Setting up AWS infrastructure from the ground up using AWS CDK (Python client with the documentation digging in TypeScript): - VPC - setting multiple networks with private and public subnets, connected toon-premise data center and office infrastructure using Transit Gateway - EKS - deploying, monitoring and managing multiple K8s clusters, separating workload on different types of nodes (including GPU nodes for ML tasks) and writing Helm charts for deploying in-house and external applications; - RDS - support multiple PostgreSQL instances (one instance per service) - CodeBuild - using in CI/CD pipeline for steps like building/testing/deploying code from Git repositories in multiple environments; - Lambda - writing in-house functions for CI/CD pipeline with SNS and API Gateway as a transport and trigger; - IAM, S3 - managing roles, groups, permissions and buckets using AWS CDK only; - ElasticSearch Service - supporting multiple domains for logging from EKS and on-premise data centre using Fluentd;-Developers support with applications deployment (CI/CD and monitoring) and architectural advisory;

Moscow, Russian Federation

During my work at Fevlake, I was leading a team of DevOps engineers (6 people) with the mission to bring DevOps into our clients' (17 clients) pipelines. As a leader as was not only helping my peers with their tasks but also taking care of communications with clients as well as audit of potential clients and task management for everyone in need.Position action points:- Troubleshooting issues on servers;- Support of servers on GNU/Linux;- Support of VMs on dedicated servers;- Client's infrastructure support (hardware and cloud-based);- Ansible playbook writing;- Database administration;- Setting up and supporting Kubernetes clusters;- Integration and support of CI/CD processes;- Integration of Helm in client pipelines;- Support and improvement of monitoring infrastructure;- Setting up backups and maintenance tasks;- Setting up VPN for clients to access infrastructure and connecting different locations;- Setting up secure high available load balancers;- Troubleshooting of client's applications;- Writing in-house applications in Python;- Setting up DDoS protection of the client's infrastructure;- Setting up CDN acceleration on client's content;- Consulting clients in architecture solutions;- Implementing automation in-house solutions for a team;- Setting up company documentation pipeline.

Moscow, Moscow City, Russia

- Planning and implementing infrastructure for high-available and fault-tolerant online service;- Setting up a development environment with CI/CD pipelines, error tracking and log aggregation;- Writing of project documentation;- Developers consulting on architecture solutions and patterns;- Database administration and structure implementation.

Moscow, Russian Federation

- Database administration;- Configuration management integration;- CI/CD pipelines implementation and migration to other solutions;- Supporting and writing in-house applications for development and business needs;- Setting up and improving monitoring infrastructure;- Cooperation with 3rd parties in implementing business solutions;- Setup audit environment for PCI-DSS certification and performing PCI-DSS routines;- Migrating VM based applications to containerization solutions;- Writing tools for server provisioning speedup using Cloud-Init.

Moscow, Moscow City, Russia

- Purchasing and configuration of hardware (servers and network hardware) for production and development environments;- Migrating from FreeBSD Jails to Linux VMs;- Database administration;- Network administration;- Supporting and writing in-house applications for development and business needs;- Supporting different SMS Gateways;- Troubleshooting in-house developed applications;- Improving existent monitoring infrastructure;- Setup audit environment for PCI-DSS certification and performing PCI-DSS routines;- Setting up automated VM provisioning using DHCP and iPXE.

Moscow, Moscow City, Russia

- Office hardware support;- Purchasing and configuration of hardware (servers and network hardware);- Atlassian services administration;- Supporting and writing in-house applications for office administration routines automation.

Moscow, Moscow City, Russia

During my work at EXANTE, I was both the face of the company for the clients as well as a helping hand for the internal team responsible for both infrastructure monitoring as well as trading configuration requests.Position action points:- Internal company services monitoring and troubleshooting;- Client's issues troubleshooting and solving;- Automation of internal tasks with scripting programming languages (Bash, Python);- Cooperating with Development and DevOps departments.