Alen Krmelj
Verified Expert in Engineering
Software Developer
Alen is an experienced engineer with a demonstrated history of working in the information technology and services industry—specializing in HA and load balancing infrastructures. Alen also possesses years of experience working with on-premise and Cloud (AWS) environments.
Portfolio
Experience
Availability
Preferred Environment
Unix, Linux
The most amazing...
...infrastructure I've built is a mobile advertising platform (with 300+ servers & 48 microservices) that was high performant, multi-region, and highly available.
Work Experience
Cloud Infrastructure Team Lead
Bitstamp
- Developed a framework for IaC deployments of crypto exchange.
- Designed our bitstamp application framework used for CI/CD pipeline of microservices.
- Designed and maintained low latency, highly available crypto exchange infrastructure, logging/monitoring pipelines, APM infrastructure, mailing infrastructure, and security-related software implementation.
- Implemented event-driven architecture with message bus and multi-AWS account set up with control tower that divisions can use to deploy and manage independently without sysops intervention.
Senior DevOps Engineer
Bitstamp Ltd.
- Took care of and improved the whole crypto-exchange infrastructure on AWS.
Team Lead DevOps
Blocktrade AG
- Fixed a testing pipeline with Jenkins.
- Tuned and tweaked a Docker swarm cluster.
- Implemented certain microservices.
- Redesigned the topology to make it more secure.
Senior DevOps Engineer
Celtra, Inc.
- Fully automated their infrastructure setup on AWS.
- Automated the testing/deployment pipeline written in Python.
- Maintained 300+ servers on production, delivering mobile ads at millions of impressions per minute.
Head System Administrator
Httpool d.o.o.
- Set up four data centers: two on remote locations and one on AWS.
- Established the AWS infrastructure from the ground up and connected with on-premise infrastructures.
- Implemented a multi-master setup of databases that were highly available, high performant infrastructure and load-balanced with IPVS and BGP multihoming.
- Created our own CDN infrastructure around the globe that served static content for ads.
System Administrator
Zavod O
- Worked for a nonprofit organization.
- Set up the whole data center along with NAS and a WiFi network that covered the whole city of Škofja Loka.
- Provided web hosting for nonprofit organizations.
System Administrator
A-Soft d.o.o.
- Created an eDiploma system for the faculty for social studies.
- Maintained the network and servers for Viator-Vektor transport company.
CEO
BShosting
- Owned one of largest web hosting providers in Slovenia at that time.
Experience
Google Interview
Education
Absolvent in Computer Science
Faculty of Computer Science - Ljubljana, Slovenia
Certifications
AWS Certified SysOps Administrator - Associate
Amazon Web Services
AWS Certified Solutions Architect - Associate
Amazon Web Services
Skills
Tools
AWS CloudFormation, Amazon Elastic Container Service (Amazon ECS), Amazon Elastic Container Registry (ECR), AWS ELB, Amazon CloudFront CDN, VMware, CircleCI, Docker Swarm
Frameworks
AWS HA
Paradigms
DevOps, Object-oriented Programming (OOP)
Platforms
Linux, Amazon EC2, Amazon Web Services (AWS), Unix, CentOS, Citrix, Docker, Kubernetes
Storage
Amazon S3 (AWS S3), Databases, Storage Area Networks (SAN), Data Centers
Languages
Python, Bash Script, Bash, PHP, Java
Other
Blade, Servers, Cisco, Web Hosting, WiFi, Server Infrastructure, Content Delivery Networks (CDN), Exoscale, AWS DevOps, Programming, Algorithms, Sorting Algorithms
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