Vadim Tsvetkov, Developer in Cologne, North Rhine-Westphalia, Germany
Vadim is available for hire
Hire Vadim

Vadim Tsvetkov

Verified Expert  in Engineering

DevOps/Cloud Architect and Developer

Location
Cologne, North Rhine-Westphalia, Germany
Toptal Member Since
April 15, 2020

Vadim has seven years of experience as a cloud architect and DevOps engineer and a background in full-stack Java web development. His expertise includes infrastructure, optimization, deployment, CI/CD pipelines, migrations, and security. Vadim prides himself on being easy to work with and a great asset on complex projects requiring security and stability.

Portfolio

E.ON
Amazon Web Services (AWS), Terraform, MySQL, Amazon Aurora, ProxySQL, Unix...
Mobilezone
Amazon Web Services (AWS), Terraform, AWS Cloud Development Kit (CDK), Helm...
nDimensional
Amazon Web Services (AWS), Kubernetes, Amazon EKS, Apache Kafka...

Experience

Availability

Part-time

Preferred Environment

Amazon Web Services (AWS), Microservices, Node.js, Java, Docker, Kubernetes, CI/CD Pipelines, Terraform, DevOps, Containers, Unix, DevOps Engineer, Infrastructure as Code (IaC), AWS Certified Solution Architect, Linux, Cloud, Containerization, Orchestration, Scripting Languages, Bash, Jenkins, Amazon Virtual Private Cloud (VPC), Web Application Firewall (WAF), Amazon S3 (AWS S3), AWS Cloud Architecture, AWS IAM, Cloud Infrastructure, Scalable Web Services, Cloud Migration, AWS Cloud Computing Services, AWS DevOps

The most amazing...

...project I've built is an AWS infrastructure for a microservices landscape of a major insurance company, which has a solid CI/CD workflow for the client's teams.

Work Experience

Freelance AWS DevOps Engineer

2023 - 2023
E.ON
  • Worked on AWS cloud infrastructure and IaC automation using Terraform, a HashiCorp Nomad cluster, Harbor, Consul, and an Amazon Aurora/MySQL database.
  • Implemented security compliance aspects using IAM keys, image scan, DB and S3 permissions, SSM tunnel, and Azure VPN.
  • Contributed to system observability by integrating Splunk, Grafana, Amazon CloudWatch, Canaries, Lambda, Microsoft Teams alerts, and some 3rd-party monitoring tools with the infrastructure.
  • Developed the CI/CD and GitOps processes using GitLab, pipelines, Jenkins, Docker, and Amazon Machine Image (AMI) images.
Technologies: Amazon Web Services (AWS), Terraform, MySQL, Amazon Aurora, ProxySQL, Unix, Solution Architecture, DevOps Engineer, Infrastructure as Code (IaC), AWS Certified Solution Architect, Security, Linux, Amazon RDS, Monitoring, CI/CD Pipelines, Cloud, Containerization, Orchestration, Scripting Languages, Bash, Jenkins, GitLab CI/CD, AWS Lambda, TypeScript, Amazon Virtual Private Cloud (VPC), Web Application Firewall (WAF), Amazon EC2, Amazon S3 (AWS S3), Python, AWS Cloud Architecture, AWS IAM, Cloud Infrastructure, Scalable Web Services, Web Scalability, Cloud Migration, AWS Cloud Computing Services, AWS DevOps, Identity & Access Management (IAM)

AWS Architect and DevOps Engineer

2022 - 2023
Mobilezone
  • Used Terraform, AWS CDK, Helm, VPC, AWS network load balancing (NLB), Amazon EKS, Amazon Aurora PostgreSQL, OpenSearch, RabbitMQ, Amazon ElastiCache, and Redis to contribute to AWS cloud infrastructure and infrastructure as code (IaC).
  • Worked on system observability using Prometheus, Grafana, and Amazon CloudWatch.
  • Implemented CI/CD and GitOps using Argo CD, GitLab, Docker, Amazon ECR, and Microsoft Teams.
Technologies: Amazon Web Services (AWS), Terraform, AWS Cloud Development Kit (CDK), Helm, Amazon Virtual Private Cloud (VPC), AWS ALB, Kubernetes, Amazon EKS, Amazon Aurora, PostgreSQL, RabbitMQ, Amazon ElastiCache, Redis, Prometheus, Grafana, Amazon CloudWatch, Argo CD, GitLab, GitLab CI/CD, Docker, DevOps, Containers, Unix, Solution Architecture, DevOps Engineer, Infrastructure as Code (IaC), AWS Certified Solution Architect, Security, Linux, Amazon RDS, Monitoring, CI/CD Pipelines, Cloud, Containerization, Orchestration, Scripting Languages, Bash, Amazon EC2, Amazon S3 (AWS S3), Python, AWS Cloud Architecture, AWS IAM, Cloud Infrastructure, Scalable Web Services, Web Scalability, Cloud Migration, AWS Cloud Computing Services, AWS DevOps, Identity & Access Management (IAM)

AWS Architect and DevOps Engineer

2021 - 2022
nDimensional
  • Contributed to AWS cloud infrastructure and IaC using different tools, including Terraform, AWS CloudFormation, Helm, and Amazon VPC.
  • Automated CI/CD using Jenkins Pipeline, Docker, Amazon Elastic Container Registry (ECR), and Slack.
  • Maintained big data databases using Apache Cassandra, ScyllaDB, Amazon DynamoDB, and MySQL.
  • Developed microservices and APIs and integrated them using Java, Spring, and Scala.
  • Monitored and maintained machine learning and streaming jobs using Apache Spark, Apache Flink, and H2O.
Technologies: Amazon Web Services (AWS), Kubernetes, Amazon EKS, Apache Kafka, Apache Cassandra, Terraform, AWS CloudFormation, Helm, Amazon Virtual Private Cloud (VPC), Amazon EC2, Docker, Amazon Elastic Container Registry (ECR), Slack, ScyllaDB, Amazon DynamoDB, MySQL, APIs, Java, Spring, Scala, Apache Spark, Apache Flink, DevOps, Containers, Unix, Solution Architecture, DevOps Engineer, Infrastructure as Code (IaC), AWS Certified Solution Architect, Security, Linux, Amazon RDS, Monitoring, CI/CD Pipelines, Cloud, Containerization, Orchestration, Scripting Languages, Bash, Jenkins, Amazon S3 (AWS S3), AWS Cloud Architecture, AWS IAM, Cloud Infrastructure, Scalable Web Services, Web Scalability, Cloud Migration, AWS Cloud Computing Services, AWS DevOps, Identity & Access Management (IAM)

Senior AWS Architect and DevOps Engineer

2020 - 2021
Sparta Science
  • Built the AWS cloud infrastructure and IaC, automated CI/CD, and monitored and audited software.
  • Refactored an app for cloud services and developed machine learning features.
  • Ensured security compliance for military and government cloud setups.
  • Set up VPN access to the cloud via Lightweight Directory Access Protocol (LDAP) and Active Directory.
  • Worked remotely with colleagues from Europe and the Americas.
Technologies: Amazon Web Services (AWS), Kibana, Elasticsearch, Docker, Terraform, FIPS, PostgreSQL, Node.js, AWS CloudFormation, Amazon Virtual Private Cloud (VPC), Amazon Elastic Container Service (Amazon ECS), AWS Fargate, Amazon EKS, Amazon Route 53, DevOps, Containers, Unix, ECS, Solution Architecture, DevOps Engineer, Infrastructure as Code (IaC), AWS Certified Solution Architect, Security, Linux, Amazon RDS, Monitoring, CI/CD Pipelines, Cloud, Containerization, Orchestration, Scripting Languages, Bash, AWS Lambda, TypeScript, CircleCI, Web Application Firewall (WAF), Amazon EC2, Amazon S3 (AWS S3), Amazon SageMaker, AWS Glue, AWS Cloud Architecture, AWS IAM, Cloud Infrastructure, Scalable Web Services, Web Scalability, Cloud Migration, Heroku, AWS Cloud Computing Services, AWS DevOps, Identity & Access Management (IAM)

Senior DevOps Architect (AWS)

2019 - 2020
ERGO Insurance Company
  • Developed infrastructure as code using Jenkins, GitHub, Docker, and Kubernetes.
  • Automated CI/CD using Jenkins, GitHub, tagging/branching, webhooks, image promotion, Nexus, Docker, and NPM.
  • Created a separation of concerns between developers and infrastructure using separate I-A-C Repos.
  • Built and deployed pipelines using Jenkins, Groovy, scripted and shared libs, custom DSL, Nginx, Node.js, Express.js, and React.js.
  • Created the AWS cloud infrastructure using CloudFormation, Route 53, DynamoDB, SES, and SQS.
  • Ensured AWS security with Certificate Manager, S3 bucket encryption, load balancers, and Transport Layer Security (TLS).
  • Developed the OpenShift cloud infrastructure using OpenShift, Kubernetes, and ImageStream.
  • Monitored progress with the Elasticsearch, Logstash, Kibana, and Kubernetes logs.
  • Bridged the gap between developers and project managers.
Technologies: Amazon Web Services (AWS), Jenkins, GitHub, Docker, Kubernetes, DevOps, Containers, Unix, Solution Architecture, DevOps Engineer, Infrastructure as Code (IaC), AWS Certified Solution Architect, Architecture, Security, Linux, Amazon RDS, Monitoring, CI/CD Pipelines, Cloud, Containerization, Orchestration, Scripting Languages, Bash, TypeScript, Amazon Virtual Private Cloud (VPC), Amazon EC2, Amazon S3 (AWS S3), AWS Cloud Architecture, AWS IAM, Cloud Infrastructure, Scalable Web Services, Web Scalability, Cloud Migration, AWS Cloud Computing Services, AWS DevOps, Identity & Access Management (IAM)

Cloud Migration Architect and DevOps (AWS) Engineer

2018 - 2019
AXA Insurance Company
  • Developed infrastructure as code and implemented and refactored common use cases using Groovy, OpenShift, Docker, Kubernetes, Jenkins, GitHub, Git, and Maven.
  • Deployed Jenkins pipelines with Groovy, scripted, declarative, shared libs, and a custom DSL.
  • Created unit, integration, warm-up, and load tests using Selenium, Gosu, and a Jenkins plugin. Ensured security with database encryption.
  • Improved resilience with session stickiness, data replication, and backups.
Technologies: Amazon Web Services (AWS), Guidewire, Jenkins, GitHub, Docker, Kubernetes, DevOps, Containers, Unix, Solution Architecture, DevOps Engineer, Infrastructure as Code (IaC), AWS Certified Solution Architect, Security, Linux, Amazon RDS, CI/CD Pipelines, Cloud, Containerization, Orchestration, Scripting Languages, Bash, Terraform, Amazon Virtual Private Cloud (VPC), Amazon EC2, Amazon S3 (AWS S3), AWS Cloud Architecture, AWS IAM, Cloud Infrastructure, Scalable Web Services, Web Scalability, Cloud Migration, AWS Cloud Computing Services, AWS DevOps, Identity & Access Management (IAM)

Cloud Migration Architect (AWS)

2017 - 2018
Allianz Insurance
  • Updated the existing software with modern technologies using Java, Spring Boot, Maven, WebSphere Liberty Profile, AJAX, and JavaScript.
  • Managed the cloudification, containerization, and orchestration of microservices.
  • Improved security of the cloud infrastructure using two-way TLS, Egress Policies, access tokens, secure cookies, passwords, certificates, and KeyStores in containers.
  • Created a fail safety with Apache Ignite, session persistence, and stickyness.
  • Monitored diagnosability with health checks, Dynatrace, and the ELK stack.
Technologies: Amazon Web Services (AWS), JavaScript, Ajax, Spring Boot, Java, Docker, Kubernetes, OpenShift, DevOps, Containers, Unix, Solution Architecture, DevOps Engineer, Infrastructure as Code (IaC), AWS Certified Solution Architect, Architecture, Security, Linux, Amazon RDS, CI/CD Pipelines, Cloud, Containerization, Orchestration, Scripting Languages, Bash, Jenkins, TypeScript, Amazon Virtual Private Cloud (VPC), Amazon EC2, Amazon S3 (AWS S3), AWS Cloud Architecture, AWS IAM, Cloud Infrastructure, Cloud Migration, AWS Cloud Computing Services, AWS DevOps, Identity & Access Management (IAM)

AWS Cloud Infrastructure and CI/CD Pipelines for ERGO Insurance

https://www.ergo.de/
My responsibility was to develop the AWS cloud infrastructure for several new insurance products, create the CI/CD workflow and pipelines for the development teams, and deliver a versioning and branching strategy for the software - all without predefined requirements.

Sparta Science

https://cloud.spartascience.com/
The client developed force plate hardware and the coupled AI and machine learning software to deliver body scans that diagnose movement health. End users are athletes, fitness clients and patients from military, sports, medical or occupational areas in different countries. I was responsible for design and maintenance of the AWS cloud architecture on multiple AWS accounts containing installations of the client's software.

• AWS cloud infrastructure, IaC (Terraform, CloudFormation, VPC, ECS, Fargate, EKS, Route 53, VPN, Backup)
• Automated CI/CD (CircleCI, GitHub actions, Docker, Lambda, Image Builder, AWS ECR)
• App refactoring for cloud (Node.js, Hasura, GraphQL, microservices, Lambda, AWS Aurora, Postgres SQL, Nginx)
• Machine learning (SageMaker, model training, inference, versioning, API Gateway, Lambda, AWS Glue)
• Monitoring and auditing (CloudWatch, CloudTrail, Elasticsearch, Kibana, WAF, Kinesis)
• Security compliance for military and government clouds (FIPS, FedRAMP, DoD CC SRG IL4 GovCloud, TLS, pen/vuln. scans, Nessus, Burp, Wazuh)
• VPN access to the cloud via LDAP and Active Directory (Directory Services, Transit Gateway, LDAPS)
• Remote work with the US and EU teams.

AWS Architect and DevOps

http://nd.com
The big data platform developed by the client is one of the leading solutions on the market of so-called digital twins. These AI-powered models of real devices, from streaming routers to steam turbines, bring value to B2B
clients by providing real-time monitoring and ease of development of their systems.

My work in the project included DevOps and development tasks within the client's wide software landscape.

• AWS cloud infrastructure, IaC (Terraform, CloudFormation, Helm, VPC, EC2 On-Demand/Spot, Kubernetes EKS, Kafka MSK)
• Automated CI/CD (Jenkins, Docker, AWS ECR, Slack)
• Maintenance of big data DBs (Cassandra, Scylla, DynamoDB, MySQL)
• Microservices and API development and integration (Java, Spring, Scala, REST)
• Maintenance and monitoring of ML and streaming jobs (Apache Spark, Flink, H2O)
• Remote work with the US and EU teams.
1993 - 1999

Master's Degree in Computer Science

State Technical University - St. Petersburg, Russia

DECEMBER 2020 - DECEMBER 2023

AWS Solutions Architect Associate

Amazon Web Services

Libraries/APIs

React, Node.js

Tools

Terraform, Amazon Virtual Private Cloud (VPC), Git, Jenkins, AWS CloudFormation, AWS IAM, Amazon EKS, Apache, NGINX, GitHub, Amazon Elastic Container Service (Amazon ECS), AWS Fargate, Amazon CloudWatch, GitLab CI/CD, CircleCI, Kibana, GitLab, Helm, Amazon Elastic Container Registry (ECR), Slack, AWS Cloud Development Kit (CDK), RabbitMQ, Amazon ElastiCache, Grafana, Amazon SageMaker, AWS Glue

Languages

Groovy, Bash, Java, TypeScript, JavaScript, Scala, Python

Platforms

Kubernetes, Docker, Amazon Web Services (AWS), Amazon EC2, Unix, Linux, AWS Cloud Computing Services, Nexus, AWS Lambda, OpenShift, Apache Kafka, Apache Flink, AWS ALB, Heroku

Paradigms

DevOps, Scrum, Microservices, Continuous Integration (CI), Continuous Delivery (CD)

Storage

Amazon DynamoDB, Amazon S3 (AWS S3), PostgreSQL, Elasticsearch, Azure Active Directory, Cassandra, ScyllaDB, MySQL, Amazon Aurora, Redis

Frameworks

Spring Boot, Spark, Spring, Apache Spark

Other

AWS DevOps, CI/CD Pipelines, Pipelines, Containers, DevOps Engineer, Infrastructure as Code (IaC), Security, Amazon RDS, Cloud, Containerization, Orchestration, Scripting Languages, AWS Cloud Architecture, Cloud Infrastructure, Scalable Web Services, Web Scalability, Cloud Migration, Identity & Access Management (IAM), Amazon API Gateway, Amazon Route 53, ECS, Solution Architecture, AWS Certified Solution Architect, Architecture, Monitoring, Web Application Firewall (WAF), Guidewire, Ajax, FIPS, LDAP, FedRAMP, DoD, Apache Cassandra, APIs, Prometheus, Argo CD, ProxySQL

Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.

1

Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.
2

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.
3

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring