Arina Eilaste

Owned AWS infrastructure for SaaS across multiple production and non-production environments using Terraform modules with version-controlled changes. Designed multi-account AWS setups with IAM roles and VPC networking for secure environment isolation and standardized deployment patterns. Built and operated Docker/Kubernetes workloads on EKS using Helm, and improved delivery automation via GitHub Actions. Added Prometheus/Grafana observability and created Python/Bash tooling to provision and validate environments.

Built and maintained AWS environments for fintech and enterprise systems using Infrastructure as Code with Terraform and CloudFormation. Implemented CI/CD pipelines for backend and frontend services using GitLab CI, Docker, automated validation, and environment-specific deployments. Supported Kubernetes workloads by managing deployments, Helm charts, and operational tooling across customer environments. Introduced Prometheus/Grafana monitoring and Elasticsearch-based centralized logging to improve production incident diagnosis and recovery.

Developed backend features and REST APIs for web applications using JavaScript, Node.js, and PostgreSQL, covering business logic, validation, and integrations. Containerized development services with Docker to help teams reproduce dependencies consistently. Implemented automated tests for API endpoints and backend modules to catch regressions early. Investigated issues using logs and database queries, and supported deployment preparation and configuration updates in a Linux-based environment.