Eduardo Hernacki

• Raised the team’s engineering maturity with clear standards and architectural guidance for a serverless, event-driven AWS system built on Lambda, API Gateway, EventBridge and DynamoDB, building stakeholder confidence through consistent results.
• Improved the CI/CD pipelines and introduced unit, integration and end-to-end testing with Pytest and Vitest, plus BDD specifications that gave Product and Development a shared language.
• Made code reviews, pair programming and knowledge sharing part of the team’s routine, improving accountability and making progress more transparent and predictable.
• Owned the work end to end, from requirements analysis to infrastructure as code with Terraform and AWS CDK and deployment.

Technologies Used: Python, TypeScript, Terraform, AWS (CDK, Lambda, API Gateway, DynamoDB, EventBridge), PostgreSQL, Pytest, Vitest, Next.js, Claude Code

• Designed and rolled out a multi-account backup and recovery strategy with AWS Backup across AWS Organizations, with cross-region replication within Europe and Slack notifications.
• Automated software supply-chain security by generating a software bill of materials for every build in GitHub Actions, scanning it for vulnerabilities with Trivy and tracking the results centrally in Dependency-Track.
• Ran on-site workshops for team leads and wrote internal guidelines on event-driven systems, leading to consistent adoption across product teams.
• Defined the migration strategy to next-generation Amazon EKS clusters and helped rationalize more than 100 microservices, balancing team autonomy with operational efficiency.
• Defined patching workflows for EKS and EC2 workloads, and streamlined the Terraform codebase to reduce complexity and cost.

Technologies Used: AWS (Organizations, Landing Zone, IAM Identity Center, Backup, Security Hub, S3, Lambda, RDS, EKS, ECR, SQS, SNS, Bedrock, Cost Optimization), Kubernetes, Helm, Docker, Terraform, PostgreSQL, Python, Elixir, GitHub Actions, Trivy, Dependency-Track, SBOM, Prometheus, Loki, Grafana, EventCatalog, Jira, Confluence

• Migrated the infrastructure of a Java Spring Boot and React SaaS product from Terraform to AWS CDK in TypeScript.
• Guided a team of four developers to take full ownership of the application lifecycle through CDK practices, code reviews and pair programming.
• Supported Platform and Product teams in adopting AWS CDK and designing their infrastructure.
• Improved the maintainability and resilience of a TypeScript serverless application on AWS Lambda and API Gateway while extending it during a cross-account migration.

Technologies Used: AWS (CDK, API Gateway, S3, Lambda, RDS, ECS, Fargate), TypeScript, Node.js, Terraform, PostgreSQL, OpenAPI, OAuth, GitHub, React, Java, Spring Boot, Jira, Confluence

• Owned the architecture of the Common Data Environment at SEMA, a CAD/CAM vendor serving more than 11,000 customers in over 60 countries, building core parts of it hands-on in TypeScript and Rust and facilitating the team’s Scrum process.
• Worked closely with stakeholders and product owners to clarify and prioritize requirements, guiding the team towards pragmatic, high-quality solutions.
• Built an event-driven file processing pipeline on Amazon S3 events and AWS Lambda that automated file handling.
• Helped hire for technical and leadership roles, and grew the team’s skills through pair programming sessions and AWS training.

Technologies Used: AWS (CDK, API Gateway, S3, DynamoDB, Lambda, ECS, Fargate, Cost Optimization), TypeScript, Node.js, Rust (Async/Tokio), poem-openapi, OpenAPI, OAuth, BDD, Azure DevOps, SAFe

• Designed and delivered an AWS training program with the AWS Technical Account Manager, adopted across the engineering organization.
• Supported cloud governance and compliance reviews of the AWS environment, covering security, scalability and regulatory requirements.
• Implemented a multi-account AWS setup with AWS CDK and a GitLab CI/CD pipeline for reliable deployments.
• Delivered a serverless TypeScript backend on AWS Lambda, defined with AWS CDK, for a UK merchant’s transaction portal.
• Helped hire cloud engineers and team leads, and advocated for serverless approaches in cross-team technical discussions.

Technologies Used: AWS (CDK, API Gateway, Lambda, Kinesis, EKS, ECS, Fargate, CloudFormation), Serverless, TypeScript, JavaScript, Node.js, Cypress, Python, Docker, Terraform, Pulumi, Kubernetes, Helm, Elasticsearch/OpenSearch, GitLab, Okta, OAuth, Middy.js, Jira, Confluence

• Delivered technical and strategic AWS consulting across industries in Germany and Austria, including projects with regulatory requirements, and supported pre-sales and hiring.
• Directed the migration of a device management platform to AWS for a German insurer, with an active-active multi-region setup on Amazon EC2 and Route 53 handling more than 300,000 simultaneous device connections.
• Led a database migration from Microsoft SQL Server to MySQL-compatible Amazon Aurora Serverless for a SAP Commerce platform serving the Japanese market, resolving Unicode and performance issues and improving monitoring with New Relic.
• Built a serverless application around a state machine architecture with AWS Step Functions, Lambda and DynamoDB, including PDF generation and email delivery.

Technologies Used: AWS (CDK, API Gateway, Cloud Migration, Lambda, DynamoDB, Aurora, EKS, ECS, Fargate, CloudFormation, Cost Optimization), VMware, Microsoft SQL Server, Jenkins, TypeScript, JavaScript, Node.js, Python, Docker, Terraform, Kubernetes, Elasticsearch/OpenSearch, Jira, Confluence

• Kept a global e-commerce SaaS platform reliable, secure and performant.
• Introduced Prometheus and Grafana for KPI monitoring and improved log management with Splunk.
• Supported Quality and Data Engineering teams with serverless and containerized infrastructure on AWS Lambda and Fargate.

Technologies Used: AWS (Lambda, Fargate, EC2, RDS, S3, CloudFront), Serverless Framework, Prometheus, Grafana, Splunk, Docker, Python, Node.js

• Led several migrations of web and ERP systems to AWS, moving workloads onto Amazon EC2 and RDS with Docker-based deployments.

Technologies Used: AWS (EC2, S3, IAM, Route 53, RDS), Docker, Grafana, Elasticsearch, Linux (RHEL, Ubuntu), MySQL, Python

• Consulted on infrastructure, monitoring and log management for mission-critical RHEL and CentOS environments, maintaining Nagios for monitoring and implementing Graylog with Elasticsearch for centralized logs, improving reliability and security.

Technologies Used: Linux (RHEL, CentOS), Nagios, Graylog, Elasticsearch, VMware, Oracle DB, Python, Bash

• Taught the Red Hat Linux administration course, covering system configuration and network services.

Technologies Used: Red Hat Enterprise Linux 5 and 6

• Supported enterprise infrastructure on Linux and VMware, including data protection and automated backup monitoring with IBM Tivoli Storage Manager.

Technologies Used: IBM TSM, Linux, VMware, Exchange Server

• Supported IT infrastructure for small and medium businesses, from Windows Server and Active Directory to networking.

Technologies Used: Windows Server, Active Directory, Exchange, Hyper-V, Trend Micro