Bartosz Bożyczko

Designed, developed, and maintained AWS serverless microservices using Lambda and SQS in large-scale financial services environments. Implemented Infrastructure as Code with Terraform to improve consistency, scalability, and deployment reliability. Supported CI/CD pipelines across UAT, pre-production, and production. Triaged L3 production incidents, performed root cause analysis, and improved overall system reliability. Built and optimized production observability using OpenTelemetry, CloudWatch, AWS X-Ray, Lambda Insights, including custom metrics and distributed tracing. Implemented FinOps practices such as identifying unused resources, rightsizing, and cost anomaly monitoring using AWS Cost Explorer and CloudWatch. Developed a scheduler to automatically shut down RDS databases and EC2 instances and disable scheduled jobs in non-production during nights and weekends to reduce cloud spend.

Contributed to AWS cloud infrastructure design and implementation using CloudFormation (IaC). Migrated an on-premises application to AWS, including infrastructure planning and custom build-out. Supported CI/CD pipelines enabling automated deployments across environments. Built and maintained integrations between microservice components for a large international aviation client. Troubleshot AWS infrastructure issues across compute, networking, and storage layers. Led a small team delivering a greenfield migration tool to translate a deprecated map drawing format to its successor. Wrote unit and integration tests and developed Python automation scripts for operational tasks.

Developed features for a .NET Core microservice-based web application serving a large international client. Designed and implemented REST APIs and API gateways. Contributed to CI/CD pipeline configuration and deployment automation. Optimized API performance using HTTP request profiling and tuning. Wrote unit and integration tests to support release quality.