Aleksandr Razdolski

Senior Site Reliability Engineer

📋 Summary

Site Reliability Engineer with extensive experience in maintaining and optimizing complex infrastructure to make it cost-efficient. Proven expertise in Kubernetes, Terraform, Linux and cloud-native technologies. Aiming to leverage my skills to drive innovation, ensure uptime, and achieve operational excellence for a forward-thinking company

🧑‍💻 Experience

Senior Site Reliability Engineer @ Bolt (Jan 2023 - Present)
Technologies used: Kubernetes, Flux, Helm, Terraform, Terragrunt, Ansible, Python, Golang
Team responsibilities: Providing and supporting stateless infrastructure by provisioning nodes (EC2) on EKS using Karpenter, and managing service discovery and traffic routing with etcd and Envoy

Maintenance of Kubernetes clusters with over 1000 nodes
Worked on multi-region infrastructure setup and disaster recovery
Envoy proxy configuration and tuning
Performed a migration to the IAM Identity Center for around 500 employees
Defined and managed WAF rules on AWS and Cloudflare
Enabled external monitoring for public endpoints on Site24x7
Improved and created alert rules in Prometheus
Configured SFTP server using AWS Transfer Family
Automated AWS Lambda build using GitHub Actions
Deployed yopass on ECS

DevOps Engineer @ EveryPay (Feb 2022 - Jan 2023)
Technologies used: Python, Terraform, Cloudformation, ELK, Rsyslog, OpenSearch, Postgres, Docker, Chef

Worked on the automated status page
Implemented system and payment health monitoring
Troubleshot missing log issues
Built logical replication for Postgres
Created autoscaling based on CloudWatch custom metrics
Implemented OpenSearch user management tool

Payment Analyst @ EveryPay (Mar 2021 - Feb 2022)

Created epics to integrate Apple Pay JS API, Coop Pank and Luminor OB APIs
Analyzed payment issues
Organised TPP certificate updates
Improved UI

Project Manager @ Wallester (Oct 2020 - Mar 2021)

Completed Business and Prepaid BINs project
Created epic to implement online PIN change
Worked on Visa BASE II testing
Managed development team
Onboarded clients

Junior QA Engineer @ Wallester (Apr 2020 - Oct 2021)
Technologies used: Go, Agouti, AWS

Made an automation testing plan
Improved performance of automation testing
Migrated from PhantomJS to Chromedriver

🎓 Education

Tallinn University of Technology
Bachelor's degree | Telematics and Smart Systems (2017 - 2020)
Relevant coursework: Operating Systems Administrating, Network Application, Object-Oriented Programming, Algorithms and Data Structures

💬 Languages

🇺🇸 English
🇪🇪 Estonian
🇷🇺 Russian

✨ Hobbies