# Sergei Khazov

> Senior Software Engineer, Compute (DevOps) at SquareSpace

Location: Brooklyn, New York, United States
Profile: https://flows.cv/sergeikhazov

Cloud Engineer experienced in Web development with a demonstrated history of working in the online media industry. Skilled in AWS, Serverless, Cloud Ecosystem, JavaScript, PHP, Paypal Integration, Application Programming Interfaces, and Mobile Applications. Strong engineering professional graduated from Sevastopol National University of Nuclear Energy and Industry.

## Work Experience
### Senior Software Engineer, Compute (DevOps) @ Squarespace
Jan 2024 – Present | New York, United States

### Senior Site Reliability Engineer @ Unstoppable Domains
Jan 2023 – Jan 2025

### Senior Site Reliability Engineer @ Paxos
Jan 2020 – Jan 2023 | New York, United States
- As a part of the SRE core team is responsible for the design and implementation of AWS Cloud infrastructure as a code using Terraform/Terragrunt and Chef. 
- Managing Kubernetes clusters (AWS EKS) on day-to-day bases using kubectl, K9s and ArgoCD
- Design and Architecture Infrastructure Monitoring strategy using Splunk, Prometheus, Grafana, AWS CloudWatch, AWS CloudTrail
- Designed Log delivery Pipeline using AWS Lambda, S3, AWS CloudWatch, AWS SQS, and AWS SNS.
- Responsible for migration logs from Splunk Enterprise to SplunkCloud using Kubernetes, Terraform, Chef 
- Implemented a Proxy Layer integration using IaC with HAProxy, and AWS ECS Fargate for high-load traffics integrations with third-party clients such as PayPal and Facebook.  
- As a part of the Disaster Recovery strategy to achieve high SLA was designing and Implementing AWS ECR image double publish for multiple AWS regions by using AWS CodeBuild
- Configure and support VPN servers by using AWS Site-To-Site VPN and Aviatrix VPN
- Continues infrastructure support and optimization using Terraform, Terragrunt, Kubernetes, Chef
- Participating in On-Call rotations for 24 hours of Dev team Support and responding to production incidents.
- Documenting & sharing knowledge, Providing System Design reviews and feedback, conducting post-incident reviews, and providing runbooks for Continues Deployment processes

### Lead Full Stack Cloud Engineer @ Blink Fitness
Jan 2017 – Jan 2020
As a part of architecture team is responsible for design, architecture scalable microservices with
Serverless approach on AWS ecosystem (AWS Lambda, API Gateway, DynamoDB, Cloudformation)

- Providing solutions and creating architecture documentation for delivery team.
- Designed and Architect CRM for iBlink application
- Provided Logging strategy for API microservices based on AWS Cloudwatch
- Managing AWS IAM roles for rest of the team and 3rd party agencies
- Integrated Git Flow into the delivery team as well
- Leading Engineering Interviews and onboarding processes

As a part of Delivery team is responsible for Microservices implementation using Serverless framework, NodeJS, AWS-SDK, DynamoDB, Amazon RDS, AWS S3, AWS IAM:

- Developed iBlink WebSite using Angular 5x, AWS-SDK, AWS Cognito/Federated Identity
- Developed Back-End API microservices using Node.JS, API Gateway, AWS Lambda
- Integrated AWS Signature Version 4 API authorization
- Implemented Gitlab CI for Front-End and Back-end app based on Angular 5x/Serverless
- Integrated API Documentation delivery based on swagger generator with GItlab CI
- Provisioning DEV, QA, PreProd and Prod environments
- Introduced and Configured GitLab for delivery team. Providing Code review

### Sr. Solution Architect @ Complex Media
Jan 2017 – Jan 2017 | Greater New York City Area
Was responsible for migration existing services, such as Apple News Publisher Tool, Facebook Instant Article Publisher tool to AWS Serverless Architecture using Serverless framework, AWS DynamoDB, AWS API Gateway and AWS S3, AWS Cloudformation.

### Sr. Web Developer @ Complex Media
Jan 2016 – Jan 2017 | Greater New York City Area
As a part of the architecture team leading and responsible for design and implementation of new tools and features for internal CMS:

- Designing and Implementation the Asset Media Library (images and media manipulation and quick search tool) using AngularJS, Apache Solr search.
- Was responsible for implementation and support of the articles publisher tool for Apple News app and Facebook Instant articles. Implemented using: Node.js + Express.Js, TypeScript.

### Web Developer @ Complex Media
Jan 2013 – Jan 2016 | Greater New York City Area
As the part of the Web core team responsible for the front-end logic of ​www.complex.com​ web site:

 - Designed and developed front-end architecture using JavaScript Framework AngularJS for
    client data logic and Laravel 4.1 for application data logic
 - Developed CSS design logic and responsiveness logic using Compass framework, SASS
    technologies and CSS media queries.
 - Developed animations logic using jQuery, AngularJS animation and CSS transitions.
 - Worked with caching technologies such as Varnish and Riak
 - Developed cross-platform (mobile/tablet) user interface
 - Developed data replication from SQL (MySQL) to NoSQL (MongoDB)
 - Developed CSV reporting module and iTunes podcast publishing module
 - Source control using git/SVN/GitLab technologies

Worked on partner web site ​www.solecollector.com

 - Developing additional functionality such as email subscription using SailThru API.
 - Fixing bugs and solving many related small tasks issues

### Web Developer @ Ruckus Marketing
Jan 2011 – Jan 2013
Dynamic web site design and programming using PHP MVC Frameworks(CodeIgniter, CakePHP), SQL (MySQL) and NoSQL (Redis) databases, JavaScript (jQuery, JQuery UI, Bootstrap), HTML, CSS, AJAX.(www.yumani.com,www.teamcontinuum.net, www.brandnewbody.com, www.uplanme.com)

Created solutions for small and medium task problems such as: 
- searching products in large databases (solved by using Sphinx Search Engine)
- quick and safe data transfer and scaling  database in real time (solved by building queue based on NoSQL Redis)
- sound synchronization between 2 remote parties (solved by HTML 5 audio player, JavaScript and AJAX technologies)

Developed payment systems through API (PayPal, Stripe, Autorize.Net, Tipalti) for E-Commerce web sites and mobile application.

Created Restful API for mobile and web applications.


## Education
### Bachelor of Computer Science
Sevastopol National University of Nuclear Energy and Industry

### Гимназия №5 им Л. Украинки.


## Contact & Social
- LinkedIn: https://linkedin.com/in/s-khazov

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Source: https://flows.cv/sergeikhazov
JSON Resume: https://flows.cv/sergeikhazov/resume.json
Last updated: 2026-03-31