11/04/2026 updated

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AWS Cloud Architect & Senior Backend Engineer | Kubernetes, GitOps | Event-Driven | Auth/SSO

Madrid, Spain
Germany +16
info: Germany, Austria, Switzerland, Spain, Italy, France, Belgium, Denmark, Finland, Greece, Ireland, Luxembourg, Netherlands, Poland, Portugal, Sweden, Czech Republic
Master's in Computer Engineering, Universitat Oberta de Catalunya
Madrid, Spain
Germany +16
info: Germany, Austria, Switzerland, Spain, Italy, France, Belgium, Denmark, Finland, Greece, Ireland, Luxembourg, Netherlands, Poland, Portugal, Sweden, Czech Republic
Master's in Computer Engineering, Universitat Oberta de Catalunya

Profile attachments

Oleksandr-Ivanitskyy-CV.pdf

About me

Senior Backend & Cloud Engineer in Madrid (ex-Amazon, Glovo, Nexthink). AWS Solutions Architect Associate and Terraform Associate certified. I design and run AWS, Kubernetes/GitOps and event-driven platforms (Kafka, SQS), plus OAuth/OIDC/SAML auth. Remote across the EU, hybrid in Madrid.

Argo CDOIDCJava (Programming Language)Amazon Web ServicesDevOpsPython (Programming Language)OAuthSecurity Assertion Markup Language (SAML)Event-driven ArchitectureSpring BootAWS LambdaInfrastructure as Code (IaC)Event Driven ArchitectureKubernetesHashicorpApache KafkaTerraformDomain Driven DesignJenkinsMicroservices
Cloud Architecture & AWS
Expertise in cloud environments with AWS, including AWS IAM, AWS Lambda, and AWS Certified Solutions Architect certification. Design and deployment of infrastructure using Kubernetes and GitOps practices, combined with CI/CD automation.

Event-Driven Architecture & Microservices
Strong background in event-driven architectures using Apache Kafka and SQS for high-throughput, zero-loss and low-latency communication between distributed microservices. Experience with large-scale data import and export pipelines to destinations such as S3 and SFTP.

Identity & Access Management (IAM/OIDC/OAuth)
Deep expertise in OIDC and OAuth protocols, permission management with RBAC/IAM, and integrations with identity providers such as Okta, Auth0 and AWS Cognito, including SSO, social login and federation with Google, Microsoft and similar accounts.

Hexagonal Architecture & Domain-Driven Design
Application of hexagonal architecture and Domain-Driven Design (DDD) to organize code into isolated contexts, ensuring business logic has no external dependencies. Contexts communicate exclusively through message buses such as Query Bus and Command Bus.

CI/CD & DevOps
Design and configuration of Jenkins pipelines and migration of 30+ microservices from Jenkins to ArgoCD. Creation of Dockerfiles for containerization and administration of Kubernetes clusters ensuring stability, scalability and security.

Backend Development (Java, Golang, NodeJS, TypeScript)
Full-cycle backend development using Java, Golang, NodeJS and TypeScript. Experience building high-throughput microservices and GraphQL APIs, as well as developing recommendation engines and data processing solutions.

Testing Strategy
Application of a three-layer testing strategy: unit tests on use cases with mocked infrastructure, integration tests against real services without mocking, and acceptance tests that validate functionality end-to-end. Focus on tests that add value.

Infrastructure as Code (Terraform)
Certified HashiCorp Terraform Associate with hands-on experience using Terraform for infrastructure provisioning and management across cloud environments.

GraphQL API Development
Unification of product catalogs into a single, highly optimized GraphQL API, reducing latency and streamlining client-side integrations. Experience with Spring and GraphQL in production microservices environments.

Experience

Professional experience5 - 10 years
Freelancer since2026

Languages

EnglishFluentSpanishNative speakerUkrainianBasic knowledge

Project history

Software Engineer IV - ARM team

Nexthink
Part of the Access Right Management (ARM) team, responsible for designing, implementing and maintaining the platform's authentication and authorization systems. Designed and refactored core authorization services applying Hexagonal Architecture and DDD. Integration with customer IDPs via SAML, OAuth 2.0 and OpenID Connect. Experience with Auth0, AWS Cognito, Keycloak and Okta for identity federation and SSO. Management of identity lifecycles, access policies and secure user provisioning. Infrastructure on AWS with Kubernetes and GitOps practices. Technologies: Kubernetes, AWS IAM, Auth0.

Software Engineer IV - Data Export team

Nexthink
Part of the Data Export team, responsible for designing and implementing solutions within a microservices architecture. Migration of 30+ microservices from Jenkins to ArgoCD, defining the team's CI/CD practices. Large-scale data export management to customer storage solutions (SFTP, HTTP, S3, Azure Data Lake). Use of Apache Kafka and SQS for efficient data flow between services. Development and integration in AWS environments with a microservices architecture. Technologies: Kubernetes, Kafka, Amazon SQS, Argo CD.

Software Engineer II

Glovo
Part of the Product Enrichment team within the Content cluster, focused on enriching product information to increase customer confidence in purchasing decisions. Migration from a monolith to microservices architecture applying Hexagonal Architecture and DDD. Implementation of support for multi-image products. Unification of the Glovo catalog and products into a single, highly optimized GraphQL API. Collection and integration of additional product information for partners. Technologies: Spring, GraphQL, Terraform, Github Actions.

Software Development Engineer I

Amazon
Part of the Amazon Business - Guided Buying team, responsible for developing features for B2B customers, allowing them to create preferred catalogs and apply restrictions on the Amazon catalog. Migration of the storage system to Apache Parquet, achieving a 90% reduction in compute costs. Development of a recommendation engine based on previous purchases. Implementation of restrictions and locks by seller, category or brand. Technologies: AWS, AWS Lambda, Spark, DynamoDB.

Software Engineer (DevOps area)

Ericsson
Part of the Continuous Integration team, contributing to the automation and optimization of software development and delivery processes. Design and configuration of Jenkins pipelines to automate build, test and deployment workflows. Development of Python scripts to improve automation, testing and deployment tasks. Creation of Dockerfiles for application containerization. Administration of Kubernetes clusters. Technologies: Jenkins, Docker, Terraform, Helm.

Research intern in telematics engineering

Telcaria Ideas SL
Internship focused on Software-Defined Networking (SDN) and Network Functions Virtualization (NFV) technologies. Development of applications within the ONOS framework for orchestration and automation of network resources. Design and implementation of features to improve network performance, scalability and reliability. Collaboration with senior engineers on network service orchestration projects.

Certificates

HashiCorp Certified: Terraform Associate (004)

HashiCorp

2026

AWS Certified Solutions Architect – Associate

Amazon Web Services

2025

Portfolio

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