Marko Lisica
Verified Expert in Engineering
CI/CD Pipelines Developer
Novi Sad, Vojvodina, Serbia
Toptal member since October 11, 2019
Marko has been a system administrator since before cloud computing and DevOps gained prominence. With a deep understanding of cloud infrastructure and its services, Marko has spent nearly a decade as a freelance. This experience allows him to collaborate effectively with seasoned developers and clients with just an idea, giving him the insight to grasp diverse requirements, adapt swiftly, and provide strategic guidance on the next steps.
Portfolio
Experience
- Amazon Web Services (AWS) - 10 years
- DevOps - 10 years
- CI/CD Pipelines - 8 years
- Bash - 5 years
- AWS Certified Solution Architect - 5 years
- Terraform - 4 years
- Docker - 4 years
- Grafana - 2 years
Availability
Preferred Environment
Site Reliability Engineering (SRE), GitLab, Terraform, AWS CloudFormation, AWS Step Functions, AWS Batch, Amazon Elastic Container Service (ECS), Docker
The most amazing...
...thing I built were bioinformatics HIPAA-eligible workflows on AWS and Serverless video ingestion platform using AWS cloud-native services optimized for cost.
Work Experience
System Administrator/DevOps
Freelance
- Provided WHM server support, tightened up security, improved email deliverability, and maintained anti-spam.
- Migrated highly complicated, undocumented setups consisting of 500 WordPress multisite installations.
- Managed bare bone servers on OVH and Hetzner.
- Created a simple and effective load-balanced streaming platform utilizing 20 Hetzner dedicated servers serving 3,000 simultaneous viewers.
- Implemented AWS Serverless back-end solutions for custom flows.
- Utilized AWS Serverless and Batch architecture for genomics workflows based on Nexflow.
SRE/DevOps Engineer
Cake
- Helped a team of five supporting a full suite of Cake products in the cloud.
- Troubleshooted buggy DNS and AWS networking latencies, providing repeatable steps to demonstrate the exact issue.
- Troubleshooted Nomad templating helper tool used for deployments.
AWS Solutions Architect
Centogene
- Architected, developed, and deployed AWS infrastructure for a leading bioinformatics rare disease company.
- Optimized infrastructure costs and migrated on-premise bioinformatics pipelines and tools to native AWS services.
- Implemented GitLab CI/CD for bioinformatics developers and AWS infrastructure.
- Reduced overall costs of existing AWS environments by $60,000 and introduced a cloud approach and mindset.
DevOps
Borderwise (via Toptal)
- Extended the current deployment setup.
- Managed the process of updating the platform version.
- Wrote Bash scripts to accommodate new requirements for elasticbeanstalk deployment.
- Cleaned up the project infrastructure.
- Improved the health and health monitoring of the application.
DevOps
Borderwise (via Toptal)
- Split Ruby on Rails app architecture to multiple Elasticbeanstalk environments, decoupled the app to microservice-like architecture for easier deployment and scaling.
- Consulted on AWS billing.
- Brainstormed ideas on how to think upfront concerning development and utilising AWS services to replace custom code.
- Integrated and monitored Datadog.
System Administrator/DevOps
Saturized The Interactive Agency
- Provisioned and maintained in-house dev environments for front-end and back-end developers.
- Maintained and developed Ansible playbooks for CI/CD processes based on project needs.
- Virtualized dev environments on-premise and in the cloud.
- Implemented Jenkins into our product lifecycle.
- Maintained AWS cloud resources.
Experience
AWS SES Bounced Emails Panic Trigger
https://raw.githubusercontent.com/markotitel/cloudformation-templates/master/cloudformation_ses_auto_stop.yamlAWS RDS Keep Database Stopped
https://github.com/markotitel/cloudformation-templates/blob/master/cloudformation_state-manager_rds_stopped.yamlOpenSource Contributor
https://github.com/widdix/aws-cf-templates/pull/354Certifications
Solutions Architect Associate
Amazon
Skills
Libraries/APIs
Amazon EC2 API, Node.js, React
Tools
AWS CloudFormation, AWS Subnets, Amazon Virtual Private Cloud (VPC), Ansible, Terraform, Grafana, Observability Tools, Amazon Firewall, GitLab, AWS Step Functions, AWS Batch, Amazon Elastic Container Service (ECS), GitHub, Amazon CloudFront, Bitbucket, AWS SDK, Docker Compose
Paradigms
DevOps, Continuous Integration (CI), Continuous Delivery (CD)
Platforms
AWS Elastic Beanstalk, Amazon Web Services (AWS), AWS Lambda, Docker, Amazon EC2
Storage
Amazon S3 (AWS S3), Redis, Elasticsearch, MongoDB
Languages
Python, Bash
Frameworks
Ruby on Rails (RoR)
Other
AWS Certified Solution Architect, Cloud Monitoring, AWS DevOps, DNS Configuration, Amazon RDS, Cloud Cost Management, CI/CD Pipelines, Prometheus, Site Reliability Engineering (SRE), Cloud Migration, Infrastructure as Code (IaC), Email, Deployment, DevOps Engineer, Cloud Architecture, Network Monitoring, AWS Cloud Architecture, GitHub Actions, DNS, Networking, Nomad, FastAPI
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