Marcin Brański
Verified Expert in Engineering
Serverless Developer
Warsaw, Poland
Toptal member since June 5, 2017
Marcin has spent a great deal of time working with architecting in clouds, monitoring/SRE, CI/CD, infrastructure as code, and tools that help make deployment quicker and more reliable. From a developer's perspective, he has spent most of his time developing in Python and TypeScript. He's polite, professional, and communicates extremely well.
Portfolio
Experience
Availability
Preferred Environment
DevOps, Cloud Native, Vim Text Editor, Terraform, Terragrunt, Google Cloud Platform (GCP), AWS Cloud Architecture, Amazon Web Services (AWS), Blockchain
The most amazing...
...thing I've done is to improve observability of the infrastructure and services in AWS.
Work Experience
Senior Cloud DevOps Engineer—SRE
Intelligent Lilli
- Managed infrastructure as code for all manually provisioned AWS resources.
- Restructured and refactored Terraform code to support the AWS multi-account set up.
- Migrated all already running applications to AWS Fargate.
- Improved observability with AWS Prometheus, Grafana, and Sentry.
Senior DevOps Engineer
Casefleet
- Migrated processing workers from EC2 to serverless architecture with ECS Fargate.
- Improved observability by reconfiguring Datadog, refactoring logs, and exposing necessary metrics.
- Improved the stability of the document processing pipeline.
Senior DevOps Engineer and Full-stack Developer
Lighthouse
- Developed the front end and back end in TypeScript with the Next.js framework.
- Performed security audit of AWS IAM and other AWS resources.
- Migrated and secured AWS ElasticSearch to elastic.co ElasticSearch.
Senior DevOps Engineer
Nutrino Health
- Picked a solution to define the infrastructure as code (IaC) suitable for multiple accounts in various regions and provided an interface for Terraform and Helm.
- Defined and estimated the scope for migrating AWS resources created manually to IaC.
- Defined the production infrastructure into IaC with Atmos and Terraform.
Senior DevOps Engineer
Lighthouse
- Built the infrastructure as code with CDK, TypeScript, and Terraform with Terraform Cloud.
- Improved observability of the infrastructure and services in AWS.
- Optimized the cost for ECS deployments by using Autoscaling, adjusting Fargate CPU and MEM size.
Senior DevOps Engineer
Cloud Posse
- Created a Terraform module to provision Opsgenie resources from YAML configurations using the Opsgenie provider, with automated tests. Code available at https://github.com/cloudposse/terraform-opsgenie-incident-management.
- Created a PoC Terraform module to bootstrap Terraform cloud from YAML configuration and managed all Terraform resources there.
- Designed the architecture for multi-account log streaming with Kinesis to ElasticSearch in VPC.
- Worked on CloudPosse Terraform modules, adding tests, reviewing PRs, adding functionality, and more.
DevOps Engineer
flyiin
- Designed architecture utilizing Google Cloud and Aiven.
- Moved to Infrastructure as Code with Terraform and Helm.
- Migrated legacy environments to new architecture without downtime.
DevOps Engineer
Critical Start
- Audited the infrastructure security code written in Terraform.
- Upgraded Terraform to the 0.12 version from the 0.11 version.
- Improved the Splunk deployment architecture to be more robust.
DevOps Engineer
Owsy
- Improved the infrastructure and application observability.
- Managed and optimized the AWS infrastructure for multiple clients.
- Migrated the old environments to Gruntwork.
- Upgraded Terraform to 0.12 version with all Gruntwork modules.
Infrastructure Engineer
Voxnest
- Operated a multiregional Kubernetes cluster on AWS.
- Implemented continuous integration and continuous deployment with Jenkins.
- Embraced self-healing infrastructures and applications.
- Implemented AWS infrastructure as code with Terraform.
DevOps Engineer | Python Developer
Daftcode
- Developed a Python back end in TDD (test-driven development) fashion.
- Upgraded the deployment pipeline.
- Shortened the overall deployment time.
- Migrated services from containers and deployed them on Mesos.
- Built-up the infrastructure and security with Packer Terraform and AWS.
- Migrated the system from no-configuration management to a code infrastructure with Salt.
- Visualized the infrastructure and application state with Check_MK and ELK stack.
DevOps Engineer
TouK
- Managed the infrastructure (pfSense, KVM, Mesos, AWS).
- Created CI/CD pipelines with the developers.
- Migrated from no-configuration management to a code infrastructure with Puppet.
- Architected the cloud infrastructure for clients.
- Monitored all the things with a combination of Syslog, Nagios, Check_MK, ELK, and Grafana with InfluxDB tied together.
System Administrator
SII
- Managed the infrastructure (both hardware and virtual).
- Automated the infrastructure with Puppet.
- Set up the services, scaled them, and made them highly available.
Experience
Prometheus Fake Exporter
https://github.com/3h4x/prometheus-fake-exporterTerraform Module to Provision Opsgenie Resources from YAML Configurations
https://github.com/cloudposse/terraform-opsgenie-incident-managementPrometheus on ECS PoC
https://github.com/3h4x/terraform-prometheus-ecs/Migration of DNS from GoDaddy to GCP Cloud DNS
https://3h4x.github.io/tech/2020/03/14/dns-migrationSpeaker at Confitura Conference on How to Deploy Applications Quicker
https://www.youtube.com/watch?v=rfuACOn4WLQEducation
Completed Credits towards a Bachelor's Degree in Electrical Engineering
Politechnika Warszawska - Warsaw, Poland
Certifications
AWS Certified DevOps Engineer – Professional
Amazon Web Services
AWS Certified Security – Specialty
Amazon Web Services
AWS Certified Advanced Networking Specialty
Amazon Web Services (AWS)
GCP Associate Cloud Engineer
GCP
AWS Certified Cloud Practitioner
Amazon Web Services (AWS)
AWS Solution Architect Professional
Amazon Web Services (AWS)
AWS Certified SysOps Administrator Associate
AWS
AWS Certified Solutions Architect Associate
AWS
Skills
Libraries/APIs
Terragrunt, AWS, OpenLDAP, Node.js, Jenkins Pipeline, React.js
Tools
Grunt, AWS, Ansible, Amazon Virtual Private Cloud (VPC), Terraform, Amazon Elastic Block Store (EBS), AWS, Amazon Elastic Container Service (ECS), AWS IAM, Sentry, Google Kubernetes Engine (GKE), Helm, Helmfile, Check_MK, Git, Vim Text Editor, AWS, Packer, Puppet, Nagios, Boto, Jenkins, Git, GitLab CI/CD, Grafana, Kibana, AWS Fargate, PyCharm, Sonar, OpenVPN, Logstash, Jira, Confluence, VMware, Alfresco, Vagrant, Chef, GitHub, AWS Cloud Development Kit (CDK), AWS, Nginx, SaltStack, ELK (Elastic Stack), pfSense, Iptables, Apache, CircleCI, Splunk, MQTT
Paradigms
DevOps, Agile Development, Lambda Architecture, Agile Development, DevSecOps, Agile Development, Agile Development, Continuous Integration (CI), Event Sourcing
Platforms
Cloud Native, Amazon EC2, Docker, AWS, Opsgenie, Kubernetes, Linux, AWS Lambda, Cloud Engineering, Blockchain, Windows Development, Aiven, New Relic, KVM, Apache Kafka
Storage
Amazon S3, Redis, Datadog, Elasticsearch, InfluxDB, MySQL, PostgreSQL, Google Cloud Development
Languages
Python, Python, Python, Bash, Bash Script, YAML, TypeScript, JavaScript
Frameworks
Marathon, Windows PowerShell, Django, Next.js
Other
AWS DevOps, AWS Cloud, Monitoring, Infrastructure as Code (IaC), Amazon Route 53, Container Orchestration, Cloud Services, Cloud Architecture, ECS, Serverless, Lambda Functions, Site Reliability, Security, Prometheus, Continuous Monitoring, System Administration, Task Automation, CI/CD Pipelines, Containers, Shell Scripting, Amazon Kinesis, AWS Transit Gateway, AWS, ZFS, Secure Automated Lending Technology (SALT), DHCP, Horizon, Acronis, VMware, Gruntwork, Relational Database Services (RDS), DNS, Cloud Security, IT Security, Cloud Engineering, GitHub Actions, HAProxy, Groovy Scripting
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