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Hello ~ Ivan

Ivan Katliarchuk

Engineering Manager. SRE and Platforms at Holland & Barrett

Working as a technology professional for the last decade on various projects and an IT enthusiast by passion. I breathe technology and know-how to determine the real problem. Have a long history in software development e.g., Java, C#, Python, NodeJs, and Golang. My main responsibility is to provide a resilient, secure, and highly available platform for our products and services to run on, and that the overall strategy for a platform is defined and delivered on time.

Problem Solving
Communication
Leadership
Automation
Coding
Cloud Technologies

Tech Stack

Experiences

1
Holland & Barrett

Oct 2021 - Present

UK, Remote

One of the world’s leading health and wellness retailers and the largest in Europe.

Engineering Manager. SRE and Platforms

Oct 2021 - Present

Responsibilities:
  • Maintain the connection to the big-picture vision/strategy and make it easier for a team to get things done.
  • Responsible for the overall health of the common infrastructure and platform which underpins company products and services.
  • Help to drive operations and automation to accelerate product delivery and ensure consistent and stable services through coordinating with technology teams
  • Define and Support company hyperscale platform strategy

UK, Europe, Remote

Global software consultancy, enabling our clients to deliver real and lasting business impact through design and technology.

Senior DevOps & SRE

Dec 2019 - October 2021

Responsibilities:
  • Engineering solutions for projects of different size
  • Architecture, Platform design, DevSecOps and SRE leadership
  • Security, Disaster Recovery, Automation, Infrastructure as code, Operations
  • Managing and automating platform in multy tenant environment and hybrid clouds
  • Python, NodeJS, Golang, AWS, Kubernetes, Microservices, Serverless, DevOps, SRE, Agile
2

3
Armakuni

Apr 2018 - Dec 2019

UK, London, Remote

Specialist engineering consultants across Cloud Native technologies, practices and principles work with you to define and deliver your change journey.

Technical Consultant

Apr 2018 - Dec 2019

Responsibilities:
  • Digital transformation
  • Private and public clouds automation
  • Infrastructure improvements, testing & security hardenin
  • Golang, Python, NodeJS, AWS, GCP, Microservices, Serverless, DevOps, Agile

Hermes Group

Dec 2016 - Apr 2018

UK, Leeds

European delivery company operates acrross UK, Germany, Austria, Germany and Russia

Senior Engineer & DevOps

Dec 2016 - Apr 2018

Responsibilities:
  • Lead backend and infrastructure team
  • Serverless infrastructure using pipelines, configuration as code, containers on multiple cloud platforms as well as on-premise
  • Java, NodeJS, Android, AWS, Microservices, Serverless, DevOps, Agile
4

5
MHR

Apr 2015 - Dec 2016

UK, Nottingham

Build platform to streamline and transform HR and payroll processes.

Senior Software Engineer

Apr 2015 - Dec 2016

Responsibilities:
  • Transformed a monolith to a microservice architecture
  • Migration applications from bare metal Solaris to Kubernetes
  • Java, JS, C#, Azure, SQL Server, Microservices, DevOps, Agile

Wonderment Apps

2012 - 2015

USA, Remote

Wonderment Apps builds superior digital products, and offers curated staffing resources for tech, product, and QA.

Lead DevSecOps Contractor

2012 - 2015

Responsibilities:
  • Provide DevSecOps services to: Stamps, iHerb, Nasa, Cast It, Story Scout, Casting Networks, Million Stories
  • Inspire customers and peers to solve difficult problems with innovative and novel solutions, leveraging an excellent set of technical competences.
  • Recommend migration strategies, enterprise architectures, migration tools, and cloud infrastructure required to successfully implement a complete solution using best practices
  • C#, Java, Python, NodeJS, AWS, Azure, DevSecOps, Agile
6

7
Boots Care Support Pharmacy

Jan 2012 - May 2012

UK, Nottingham

Health and beauty retailer and pharmacy chain

Engineer

Jan 2012 - May 2012

Responsibilities:
  • Maintain the technical intellectual property in the Integration tooling and automation space
  • Automating deployment, scaling, and management, both in the cloud (AWS, Azure) or on-premise.
  • Java, Python, NodeJS, DevOps, Agile

Lukoil

2007 - 2011

One of the largest oil & gas vertical integrated companies in the world

Software Engineer

2007 - 2011

Responsibilities:
  • Translating legacy business systems onto modern architecture, platforms and languages
  • Optimise Oil & Gas operations with advanced software solutions
  • Java, Big Data
8

9
Radiovolna

2004 - 2007

Milti-profile industrial enterprise working in the field of electrical equipments

Embedded Engineer

2004 - 2007

Responsibilities:
  • Working on the full product life-cycle of software for embedded systems
  • Play an integral role in the development of high-performance, real-time embedded product.
  • C, C++, Micro-controllers

Projects

Dotfiles
Owner June 2020 - Present

🔧 .files, including ~/.macos — sensible hacker defaults for macOS.

Configuration
Owner December 2017 - Present

Configuration files.

Obsidian Vaults
Owner December 2017 - Present

Obsidian vaults

Centralized Config
Owner December 2022 - Present

Scale configuration across multiple accounts

Knowledge Base
Owner March 2019 - Present

Public knowlege base.

Workshop: Terraform
Owner Dec 2019 - Present

AWS Workshop tutorials for Terraform

Workshop: AWS Kubernetes
Owner Dec 2019 - Present

AWS Workshop tutorials for EKS, Terraform and Terragrunt

Workshop: AWS EKS
Contributor Dec 2018 - Present

AWS Workshop tutorials for EKS.

Training: kubernetes
Contributor Mar 2018 - Present

My personal kubernetes training and certifications e.g., CKAD, CKA, CKAS

Workshop: Renovate
Owner Dec 2021 - Present

AWS Workshop tutorials for Renovate, Dependency Management

Workshop: Helm v1
Owner Feb 2021 - Present

AWS Workshop tutorials for Helm

Default community health files
Owner Mar 2021 - Present

Base blueprint
Owner Apr 2021 - Present

Base blueprint.

Blueprint: terraform
Owner Sep 2019 - Present

Blueprint for terraform projects.

Blueprint: workshop
Owner Sep 2019 - Present

Workshop showing you how to use blueprints.

Blueprint: vm(s)
Owner Nov 2019 - Present

Lorem ipsum dolor sit amet consectetur adipisicing elit.

Blueprint: serverless
Owner Jan 2020 - Present

Serverless blueprint.

Blueprint: aws serverless function
Owner Jan 2020 - Present

AWS NodeJs serverless blueprint.

Blueprint: performance project
Owner May 2020 - Present

AWS NodeJs serverless blueprint.

Blueprint: github action generic.
Owner May 2021 - Present

Github actions blueprint.

Blueprint: github action typescrip
Owner May 2021 - Present

Github actions typescript blueprint.

Automation: mixed pipelines helpers and mixins
Owner May 2020 - Present

Pipeline examples: Jenkins, CodeBuild, Github Actions and etc

Terraform: aws eks profile module
Owner Dec 2019 - Present

Manages an AWS EKS Fargate Profile.

Terraform: aws cloudfront module
Owner Aug 2020 - Present

AWS Cloudfront distribution module.

Terraform: aws kms module
Owner Nov 2020 - Present

AWS KMS module.

Terraform: aws lambda module
Owner Aug 2019 - Present

Deploy serverless function to AWS VPC.

Terraform: aws enforce MFA module
Owner Jun 2020 - Present

Enforce MFA policy for AWS IAM groups and users

Terraform: kubernetes velero module
Owner Dec 2019 - Present

Manages Kubernetes Velero deployment

Terraform: aws proxy nginx module
Owner Dec 2019 - Present

Deploy NGINX proxy with SSH

Terraform: helm release module
Owner Aug 2019 - Present

Wrapper for Terraform Helm provider

Terraform: aws IAM module
Owner Dec 2018 - Present

AWS IAM roles setup. TODO: move to terraform modules

Terraform: aws ECS module
Owner May 2022 - Present

Terraform module which creates AWS ECS resources.

Terraform: aws ECR module
Owner May 2022 - Present

Terraform module which creates AWS ECR resources.

Terraform: aws ECS bootstrap module
Owner July 2022 - Present

Terraform module which creates AWS ECS resources.

Terraform: AWS GitHub OIDC module
Owner July 2022 - Present

Fully configurable terraform module to access AWS APIs from Github Actions through OpenID Connect.

Terraform: AWS GitLAb OIDC module
Owner July 2022 - Present

Fully configurable terraform module to access AWS APIs from GitLAb through OpenID Connect.

Terraform: Documentation
Owner July 2022 - Present

All supported terraform modules in single repo.

iac: learn opa
Owner Dec 2022 - Present

Evaluate how to use opa.

Docker: tools
Owner Mar 2020 - Present

Docker tooling for multiple use cases.

Docker: compose starter
Owner Jan 2017 - Present

Lorem ipsum dolor sit amet consectetur adipisicing elit.

VM(s): boxes
Owner Sep 2019 - Present

Virtual machines used in hobbies and development environment(s). Packer, Vagrant

VM(s): vagrant
Owner Jan 2017 - Present

Lorem ipsum dolor sit amet consectetur adipisicing elit.

VM(s): factory
Owner May 2020 - Present

Assembling vms here.

VM(s): packer aws AMI with tools installed
Owner May 2022 - Present

Assembling AMI on AWS with Packer.

VM(s): provision
Owner May 2020 - Present

Assembling vms here.

Helper: tools and scripts
Owner Jan 2018 - Present

A collection of scripts

Helper: automate code review
Owner Oct 2022 - Present

Automate code review

Helper: kubernetes fixtures with examples
Owner Oct 2019 - Present

Kubernetes fixtures

Helper: makefiles
Owner Jan 2019 - Present

Collection of directives used by a make build automation tool to generate a target/goal

awscompute
Owner Jan 2022 - Present

AWS resources compute CPU&Memory and Instance count

Go: hackerrank challanges
Owner Mar 2018 - Present

Golang remote interview training & challanges

NodeJS: protect IAM secrets
Owner Sep 2019 - Present

AWS protect IAM secrets. Delete when expired.

NodeJS: SNS to Slack subscriber
Owner Sep 2019 - Present

AWS SNS slack subscriber implemented in nodejs.

NodeJS: AWS Step function monitor
Owner Mar 2019 - Present

AWS Step function Cloudwatch monitor

NodeJS: AWS Cloudwatch logs strem cleaner
Owner Setp 2019 - Present

A small module to streamline some of the cleanup operations required when when working with AWS CloudWatch logs

NodeJS: personal tutorials
Owner Feb 2017 - Present

NodeJS javascript screencast

Python: hackerrank algorithms
Owner Nov 2016 - Present

Hackerrank algorithm solutions in Python

Python: AWS serverless networking debug
Owner Setp 2019 - Present

Serverless networking debug

Cloud Init: examples
Owner May 2019 - Present

Industry standard multi-distribution method for cross-platform cloud instance initialization

Blueprint: artilerry project
Owner May 2020 - Present

Artillery is a modern load testing and smoke testing solution

Blueprint: K6 project
Owner May 2020 - Present

k6 is an open-source load testing tool for API performance testing

Blueprint: gatling project
Owner May 2020 - Present

Gatling is an open-source load testing tool for web applications, designed for DevOps and CI

Pentesting: lerning examples
Owner Jan 2020 - Present

Learn penetsing practices

Fastlane: plugin upload to SauceLabs
Owner Aug 2021 - Present

Fastlane plugin to automate Sauce Labs build deployments and testing

Load Generator
Owner Jun 2020

Load generator mparticle example

Renovate: Universal dependency update tool
Contributor 2021 - Present

multiple issues and bug fixes

is: Type check values
Contributor 2022 - Present

bug fixes and optimisations

Danger-js: Universal automated code review tool
Contributor 2022 - Present

bug fixes and optimisations

Crossplane(provider-aws): Crossplane AWS Provider
Contributor 2023 - Present

bug fixes, new features and improvements

Traefik helm: Traefik Proxy Helm Chart
Contributor 2022 - Present

bug fixes and optimisations

Gitlab on Kubernetes helm: Official Helm Chart for the GitLab Runner
Contributor 2024 - Present

code coverage and new capabilities

Rest Api: hello-world
Owner Jan 2020 - Present

A simple REST Service.

Education

2020-Present
BSc (Honours) Computing and IT
Taken Courses:
  • Software engineering (TM354)
  • Developing concurrent distributed systems (M362)
  • Web, mobile and cloud technologies (TM352)
Diploma of Higher Education in Computing and IT
Taken Courses:
  • Algorithms, data structures and computability (M269)
  • Web technologies (TT284)
  • Software development with Java (M256)
  • Object-oriented Java programming (M250)
  • Technologies in practice (TM129)
  • Discovering mathematics (MU123)
  • My digital life (TU100)
Radio Physics & Engineering
Taken Courses:
  • Process modeling of micro-, opto-, and nanoelectronics
  • Design Automation in Electronics
  • Identification, access and surveillance systems
  • Information processing methods

Achievements

McKinsey platform by the numbers (Senior DevOps & SRE)

RBS automation and DevOps practices (DevOps SME)

Hermes Print-in-Store (Senior Engineer & DevOPs)

Hermes and Starship Technologies (Senior Engineer)

Office for National Statistics Platform (Platform Lead)

Comic Relief Platform by the numbers (Technical Consultant)