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Eduardo Hernacki

Eduardo Hernacki

Senior/Principal Software & Cloud Engineer | SaaS · AWS · Rust · Elixir · TypeScript

Lead AI & Platform Engineer at Squer

MunichBavariaGermany🇩🇪
Open to:CollaborationsMentoring othersSpeaking engagementsFull-time rolesContract roles
Preferred workplace:Remote (same region)Hybrid
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Highlights

Full profile

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.

Career: 15

Squer

Full-time · Hybrid

Apr 2026 - Present

Agent Platform Architecture & Delivery: Design and implementation of Claude Code agent tooling for a large engineering organisation, operationalised on AWS Bedrock AgentCore, with emphasis on governance, traceability, and compliance. Spec-Driven Development: Delivery of a pipeline that transforms unstructured notes into versioned specifications with Given/When/Then scenarios, tracker stories with acceptance criteria, and linked branches, ensuring requirements stay reviewable and traceable to implementation. Multi-Agent Automation: Delivery of a pipeline that turns approved specifications into code changes, composing implementation and verification stages with dedicated subagents, a bounded correction loop, and an unattended mode for CI. Team Enablement & Adoption: Growth of adoption from zero to approximately 47 active developers across three engineering tribes, backed by a decade of platform engineering in regulated industries and complemented by authorship of the contribution standards that govern the platform, including a design-document-first gate, a consumer override pattern, and component contracts.

Claude CodeClaude Agents SDKStrands AI Agents SDKAWS Bedrock AgentCoreAWS BedrockAWS CDKAWSTypeScriptPython

Freelance · Remote

Mar 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.

AWSAWS CDKTypeScriptNode.jsVitestHonoCypressRustElixirF#Claude CodeTerraformPulumiPythonFastAPIGleamAWS API GatewayAWS FargateAWS LambdaAWS S3AWS EKSAWS ECSGitHub

Client from the Software Development Services Industry

Freelance · Remote

Jan 2026 - Mar 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.

Test-Driven DevelopmentBehavior-Driven DevelopmentSoftware EngineeringQuality AssuranceCI/CDAWSPythonTypeScriptTerraformPostgreSQLpytestVitestNext.jsSDLCClaude CodeTechnical LeadershipTraining & DevelopmentTeam Leadership

Client from the Health Services Industry

Freelance · Remote

Nov 2024 - Aug 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.

AWS OrganizationsAWS Landing ZoneAWS IAM Identity CenterAWS BackupAWS SecurityAWS S3Amazon Relational Database Service (RDS)AWS LambdaAWS RDSAmazon EKSAWS ECRAWS SQSAWSAWS SNSAmazon BedrockAWS Cost OptimizationKubernetesHelmDockerTerraformPostgreSQLPythonElixirPhoenix FrameworkGitHubCI/CDTrivySBOMDependency-TrackPrometheusLokiGrafanaEventCatalogJIRAConfluence

Client from the Credit Bureau Industry

Freelance · Remote

Mar 2024 - Oct 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.

Sema (Germany)

Full-time · Hybrid

Aug 2022 - Jan 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.

TypeScriptTeam LeadershipTechnical LeadershipRustAWSTest-Driven DevelopmentSoftware EngineeringBack-End Web Development

Ppro

Full-time · Hybrid

Nov 2021 - Jul 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.

tecRacer Group

Full-time · Hybrid

Aug 2019 - Oct 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.

PriceSpider

Full-time · On-site

Jan 2018 - Jul 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.

Nuvme

Contract · Hybrid

Mar 2017 - Dec 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.

Freelance · Remote

Mar 2017 - Dec 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.

Indyxa Group

Full-time · On-site

Jan 2014 - Mar 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.

QuickSoft Sistemas de Informações

Full-time · On-site

Aug 2012 - Jan 2014

Provided comprehensive enterprise infrastructure support, including data protection, collaboration with Tupy SA for data security, and development of backup monitoring and automation tools.

Proway IT Training

Temporary · On-site

May 2013 - Jun 2013

Managed the Red Hat Linux Administration Course, focused on RHEL5/6 configuration, system and network services management.

Advance Solution

Full-time · On-site

Oct 2008 - Jul 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.

Talks & sessions: 1

Functional Domain Modeling with Gleam

16 min · developers, software architects

This presentation demonstrates how Gleam's powerful type system and functional programming paradigm excel at domain modeling within Domain-Driven Design (DDD). It showcases Gleam's ability to create highly accurate domain representations through structs to represent data, union types for modeling choices, and pure functions that directly reflect business workflows. It also explores how Gleam's syntax makes domain logic self-evident and accessible to non-programmers while maintaining the robustness and concurrency benefits of the BEAM for production systems.

Watch recording

Delivered 2x · latest 2025 · Code BEAM Europe 2025, Elixir, Erlang & Gleam Meetup Munich

Code BEAM Europe 2025 · Nov 6, 2025 · Berlin, State of Berlin, Germany · Presenter

Watch recordingEvent page

Elixir, Erlang & Gleam Meetup Munich · Feb 20, 2025 · Munich, Bavaria, Germany · Presenter · In person

Event page

Skills: 124

Technical

Amazon Web Services (AWS)ApacheAWSBack-End Web DevelopmentBash ScriptCI/CDCloud InfrastructureContinuous Integration and Continuous Delivery (CI/CD)
DevOpsDistributed SystemsDockerElasticSearchElixirErlangF#FastAPIGitHubHonoJIRAKubernetesLinuxLinux System AdministrationMySQLNext.jsNginxNode.jsOAuthPhoenix FrameworkPlatform EngineeringPostgreSQLPythonPython (Programming Language)Quality AssuranceRustRust (Programming Language)ScalaSDLCSoftware DevelopmentSoftware EngineeringTerraformTest-Driven DevelopmentTypeScriptWeb Application DevelopmentWeb DevelopmentWindows Server

Business

Product DevelopmentTraining & Development

Interpersonal

LeadershipTeam LeadershipTechnical Leadership

Security

Network Infrastructure

Other

AI-nativeAmazon BedrockAmazon CloudFrontAmazon DynamodbAmazon EC2Amazon EKSAmazon Relational Database Service (RDS)Amazon Route 53
AWS API GatewayAWS BackupAWS BedrockAWS Bedrock AgentCoreAWS CDKAWS Cloud MigrationAWS Cost OptimizationAWS ECRAWS ECSAWS EKSAWS EventBridgeAWS FargateAWS IAM Identity CenterAWS LambdaAWS Landing ZoneAWS OrganizationsAWS RDSAWS S3AWS SecurityAWS SNSAWS SQSBehavior-Driven DevelopmentCDKCentOSClaude Agents SDKClaude CodeCloud ApplicationsCloud ComplianceCloud ConsultingCloud-Native ApplicationsConfluenceCypressDependency-TrackEventCatalogForefront TMGFortinetGleamGrafanaGraylogHAProxyHelmISA ServerLokiLustre FrameworkOpenAPIOracle Enterprise LinuxPrometheusPulumipytestRHELRHEL 7SBOMServerlessServerless ComputingServerless FrameworkSoftware Engineering PracticesSoftware Systems EngineeringSolution ArchitectureStrands AI Agents SDKTrivyTSM AdministrationVitestVMwareWindows Desktop AdministrationZimbra

Credentials: 7

SADMF Practitioner

Scaled Agile DevOps

Mar 2024
Jan 2024

Rust for Java Developers

LinkedIn Corporation

Jan 2024

Design Patterns for Rust

LinkedIn Corporation

Jan 2024

Red Hat Certified Engineer - RHEL 7

Red Hat

Dec 2014

Education: 1

Computer Science

Jul 2015 - Jul 2016

Incomplete bachelor studies, dropped after second semester to focus on self-paced online education.

Involvement: 2

Community

Organizer

Munich, Bavaria, DE

Mar 2026 - Present

Monthly casual get-together for anyone interested in pragmatic Functional Programming around Munich. It is about connecting with other people who care about functional programming and applying it in practice. There are no formal presentations or fixed agendas, just open conversations about building software with pragmatic FP. ​Whether you're using FP in production, working on side projects, or exploring the approach, this is a space to meet peers, exchange perspectives, and learn from each other. Everyone is welcome, regardless of experience level or background.

  • Gleam
  • Elixir
  • Erlang
  • Scala

Organizer

Feb 2024 - Present

We are the meetup for everything related to Elixir, Erlang, Gleam and the BEAM in general in Munich.

  • Elixir
  • Erlang
  • Gleam
  • Phoenix Framework
  • Lustre Framework

Languages: 3

English(Native or bilingual)
German(Native or bilingual)
Portuguese(Native or bilingual)

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