# Eduardo Hernacki (@runlevel0.me)

Profile: https://sifa.id/p/runlevel0.me
Headline: Principal Engineer | SaaS · AWS · Rust · Elixir · TypeScript
Location: Munich, Bavaria, Germany

## About

I'm a Senior/Principal Engineer with more than 10 years of experience designing and building SaaS Products, Distributed Systems, and Cloud-Native Architectures. My work combines hands-on Software Development (Elixir, Rust, TypeScript, Python) with AWS Expertise, DevOps Practices, and Technical Leadership.

I focus on creating systems that endure: architectures that are technically sound, stable in operation, and aligned with business priorities. I bridge product vision with engineering execution, helping teams deliver reliably while supporting executives in making technology decisions that scale sustainably.

Over the years, I have led Modernization Projects, designed Event-Driven systems, enabled Teams through Mentoring and Workshops, and guided Organizations through Cloud Migrations and Compliance Audits. I enjoy working at the intersection of Software Architecture, Cloud Strategy, and Team Enablement, contributing both as an Architect and as a Hands-On Engineer.

Based in Munich, I work with clients across Germany and Europe, in German, English, and Portuguese. I am available for Freelance and Contract Projects – from Architecture Design and Cloud Transformation to Interim Technical Leadership.

## Experience

- **Cloud Consultant (Freelance Contract, AWS CDK Focus) at Client from the Credit Bureau Industry** (2024 – 2024)
  Cloud Modernization: Migrated a SaaS product (Java Spring Boot, React) from Terraform to AWS CDK, making the infrastructure more maintainable and standardized.
  
  Team Enablement: Guided a team of 4 developers to take full ownership of the application lifecycle through CDK best practices, code reviews, and pair programming.
  
  Architecture Advisory: Supported Platform and Product teams with AWS CDK adoption and infrastructure design, strengthening delivery sustainability and productivity.
  
  Application Migration: Improved the maintainability and resiliency of a TypeScript serverless application while extending its functionality during a cross-account migration.
- **IT Support Technician at Advance Solution** (2008 – 2012)
  Provided comprehensive IT services support, managing multiple customer infrastructures, including firewalls, virtualization, email, file servers, directory services, VPNs, server hardware, antivirus, and workstations, while conducting software asset management for program standardization and licensing.
- **Lead Software Engineer at SEMA 3D CAD/CAM Software** (2022 – 2024)
  Led a team of 4 Software Engineers in building a new SaaS product for the Timber Construction industry, taking on responsibilities as Architect, Developer, and Scrum Master to ensure steady progress and delivery.
  
  Worked closely with stakeholders and product owners to clarify and prioritize requirements, guiding the team toward pragmatic and high-quality solutions.
  
  Built an event-driven file processing pipeline (S3 Events + Lambda) that automated file handling and streamlined system processing.
  
  Played a key role in the hiring process, actively participating in the selection of technical and leadership roles.
  
  Orchestrated comprehensive pair programming sessions and training programs on AWS, equipping the Engineering team with valuable skills and knowledge.
- **Principal Engineer at PPRO** (2021 – 2022)
  Supported reviews of Cloud Governance and Compliance in AWS, contributing expertise in security, scalability, and regulatory requirements.
  
  Designed and delivered an AWS Training Program in collaboration with the AWS Technical Customer Manager, used across the engineering organization.
  
  Contributed to the hiring of DevOps/Cloud Engineers and Team Leads, ensuring strong technical and cultural fit.
  
  Advocated for Serverless adoption within engineering teams and represented the approach in cross-team technical discussions.
  
  Implemented a multi-account setup using AWS CDK and developed a robust CI/CD pipeline for efficient and reliable deployment of application changes.
  
  Delivered a Serverless backend (CDK, TypeScript, AWS Lambda) for a UK merchant’s transaction portal.
- **Freelance Software & Cloud Engineer at Freelance** (2024 – present)
  Cloud Architecture & Modernization: Design and implementation of AWS-based SaaS solutions (multi-account, serverless, containerized) with emphasis on scalability, resilience, and compliance.
  
  Software Architecture & Development: Delivery of SaaS platforms, backend services, and full-stack applications in TypeScript, Elixir, Rust and Python, ensuring maintainable and testable architectures (DDD, TDD).
  
  Team Enablement & Leadership: Advisory on AWS strategy, DevOps integration, and engineering practices, complemented by team enablement through code reviews, workshops, and mentoring.
  
  Business Alignment: Bridging of product vision with engineering execution through process streamlining and guidance on sustainable technology strategy.
- **Senior DevOps Engineer at PriceSpider** (2018 – 2019)
  Ensured PriceSpider's brand commerce platform "CommerceConnector" reliability, security, and performance, while implementing Prometheus for effective business KPI monitoring and enhancing log management with Splunk. Provided Architecture & Infrastructure support for Quality and Data Engineering projects, utilizing containers, AWS Lambda, and related monitoring.
- **Linux Administration Instrutor at Proway IT Training** (2013 – 2013)
  Managed the Red Hat Linux Administration Course, focused on RHEL5/6 configuration, system and network services management.
- **Lead Platform Engineer (Freelance Contract) at Client from the Health Services Industry** (2024 – 2025)
  Compliance & Resilience: Designed and rolled out a multi-account AWS Backup & Recovery strategy (AWS Backup, Slack integration) with cross-region replication in Europe; implemented software supply-chain security with automated SBOM ingestion (GitHub Actions, Trivy Operator, Dependency-Track) and defined patching workflows for EKS/EC2 workloads.
  
  Event-Driven Architecture: Led on-site workshops for team leads and wrote internal guidelines on event-driven communication patterns, enabling consistent adoption across product teams.
  
  Application & Platform Modernization: Defined the migration strategy from legacy to next-generation EKS clusters; helped rationalize 100+ microservices to balance team autonomy with operational efficiency; streamlined Terraform code to reduce complexity and cost.
- **Lead Cloud Consultant at tecRacer Group** (2019 – 2021)
  Delivered technical and strategic consulting for AWS solutions across industries in Germany and Austria, including projects with regulatory requirements.
  
  Supported pre-sales as a Solutions Engineer and contributed to hiring new consultants.
  
  Built a Serverless application with a state machine architecture, including PDF generation and email delivery (API Gateway, Lambda, DynamoDB, Elasticsearch, Terraform).
  
  Led a migration from Microsoft SQL Server to Amazon Aurora MySQL Serverless for SAP Commerce, resolving Unicode and performance issues while optimizing monitoring with New Relic.
  
  Directed the migration of a VMware Workspace ONE infrastructure to AWS Cloud for a German insurance company, including VM conversion to EC2, Jenkins pipelines, and an active-active multi-region setup with Route 53 for 300k+ simultaneous device connections.
- **AWS Cloud Engineer at Nuvme** (2017 – 2017)
  Worked in several infrastructure migration projects to AWS
  \- from scalable web applications to legacy and ERP applications
  \- using my expertise in Linux, web applications, monitoring and security in the Cloud context.
- **Linux & Open Source Consultant at Indyxa Group** (2014 – 2017)
  Provided infrastructure, monitoring and log management consulting, improving monitoring capabilities, developing custom monitoring plugins, and implementing critical infrastructure projects, resulting in enhanced reliability, performance, and security for mission-critical environments, impacting millions of customers and facilitating financial transactions worth millions of dollars.
- **IT Support Analyst at QuickSoft Sistemas de Informações** (2012 – 2014)
  Provided comprehensive enterprise infrastructure support, including data protection, collaboration with Tupy SA for data security, and development of backup monitoring and automation tools.
- **Tech Lead (Freelance Contract) at Client from the Software Development Services Industry** (2026 – 2026)
  Team Enablement & Leadership: Enhanced team capabilities and delivery maturity; established clear engineering standards, provided architectural guidance, and strengthened stakeholder confidence through consistent delivery.
  
  CI/CD & Quality Engineering: Improved CI/CD pipelines, implemented comprehensive testing (unit, integration, e2e), and introduced BDD specifications bridging Product and Development.
  
  Process & Culture Improvement: Fostered code reviews, pair programming, and knowledge sharing; improved team accountability, resulting in a reliable delivery pipeline and greater transparency and predictability.
  
  Architecture & Delivery: Oversaw end-to-end delivery from requirements analysis through deployment, ensuring scalable and maintainable solutions.
- **Lead AI Engineer at SQUER** (2026 – present)
- **Freelance at Self-Employed** (2017 – 2017)
  Served as a Monitoring Consultant, offering comprehensive monitoring solutions for new technologies and platforms, enhancing existing monitoring systems, and providing valuable support to customer teams in optimizing their platforms.

## Skills

- Apache
- DevOps
- AWS API Gateway
- AWS Fargate
- AWS Lambda
- Trivy
- Back-End Web Development
- Amazon Route 53
- Test-Driven Development
- GitHub
- Nginx
- Software Systems Engineering
- Amazon EKS
- SBOM
- Windows Server
- Amazon EC2
- Web Development
- Software Development
- PostgreSQL
- TypeScript
- Prometheus
- Amazon Web Services (AWS)
- Linux System Administration
- ISA Server
- Zimbra
- MySQL
- Linux
- Vitest
- AWS EventBridge
- Serverless Framework
- Dependency-Track
- Amazon Bedrock
- Python (Programming Language)
- Oracle Enterprise Linux
- Leadership
- pytest
- Helm
- EventCatalog
- AWS Security
- Distributed Systems
- Windows Desktop Administration
- CDK
- Cloud Consulting
- Serverless Computing
- Graylog
- Solution Architecture
- Docker
- Kubernetes
- VMware
- Terraform
- Amazon Dynamodb
- AI-native
- AWS Organizations
- Forefront TMG
- Fortinet
- ElasticSearch
- Rust (Programming Language)
- Pulumi
- AWS Backup
- Software Engineering Practices
- Cloud Infrastructure
- Network Infrastructure
- HAProxy
- Amazon CloudFront
- AWS CDK
- Cloud Compliance
- Cloud-Native Applications
- Team Leadership
- Amazon Relational Database Service (RDS)
- Serverless
- Loki
- Grafana
- Web Application Development
- CentOS
- AWS Cloud Migration
- RHEL
- Elixir
- Next.js
- Continuous Integration and Continuous Delivery (CI/CD)
- Platform Engineering
- Node.js
- OpenAPI
- OAuth
- Product Development
- Cloud Applications
- TSM Administration
- Bash Script
- RHEL 7

## Certifications

- Red Hat Certified Engineer - RHEL 7 — Red Hat
- Amazon Web Services Solutions Architect Associate — Amazon Web Services (AWS) (http://aws.amazon.com/verification)
- Design Patterns for Rust — LinkedIn (https://www.linkedin.com/learning/certificates/311a29ea4d9f7c06eec5e8f1badc0d970f937e5a07583aca25d138674ef34a9c)
- Rust: Asynchronous Programming with Tokio — LinkedIn (https://www.linkedin.com/learning/certificates/1339989129e437b97f9de29008b72914b2eb547fb0c7fe59e4d73b612b4dce59)
- Rust for Java Developers — LinkedIn (https://www.linkedin.com/learning/certificates/47bec54cdeca7895c75d0bff2f76b07fb2b9b71b156664d9e329dd4c8188d730)
- SADMF Practitioner — Scaled Agile DevOps (https://badgr.com/public/assertions/vaHt8ctjTlCLvHyOu5FBGw)

## Volunteering

- Organizer at Elixir & Erlang Munich Meetup

## Languages

- Portuguese (native)
- German (native)
- English (native)

## Other profiles

- linkedin: https://www.linkedin.com/in/eduardohki
- website: https://runlevel0.me
- github: https://github.com/eduardohki
- fediverse: https://genserver.social/runlevel0