Michał Sagan
Software Engineer
Product Architect specializing in cloud-native integration platforms, GraphQL Federation, and API ecosystems. Transforming complex business requirements into scalable technical solutions.
Profile
Experienced Software Engineer specializing in cloud-native integration platforms and API ecosystems. Strong expertise in Web Apps, Commerce, GraphQL Federation, CIAM, and secure service-to-service communication, with hands-on experience in Node.js, TypeScript, and Azure/AWS. Proven ability to translate complex business requirements into scalable, well-governed technical solutions while collaborating effectively across teams.
GraphQL Federation
Architecting federated GraphQL solutions at enterprise scale
Cloud Architecture
Azure & AWS cloud-native integration platforms
API Ecosystems
Building scalable, well-governed API solutions
CIAM & Security
OAuth2, OIDC, PKCE, JWT implementation expertise
Employment History
Product Architect
Defining and governing target architecture for global digital commerce platforms across multiple OpCos. Designing and scaling federated GraphQL architecture, including subgraph ownership models, domain boundaries, and governance standards.
Software Architect & Developer
Modeling architecture of integrations with external applications, solution topology, and security. Developing TypeScript code for AWS Lambda with S3, DynamoDB, AWS EventBridge.
Full-Stack Developer
Designed and delivered custom migration tool from Magento 1. Integrated SAP pricing engine and Order Management System. Built Progressive Web App with Magento PWA Studio.
Adobe Commerce Architect & Developer
Hybrid role combining Architect and Principal Software Engineer for Adobe Commerce Cloud B2B platform. Designed integrations across MuleSoft, SAP, Salesforce, and Fastly.
Software Architect
Led design of development environment and software architecture for large-scale B2C eCommerce platform at Japanese Tobacco International HQ.
Key Projects
Global Commerce GraphQL Federation
Architected and implemented federated GraphQL solution serving multiple OpCos globally. Designed subgraph ownership models, domain boundaries, and governance standards.
Impact
- Enabled unified API layer across 15+ markets
- Reduced integration complexity by 60%
- Improved API response times by 40%
Enterprise CIAM Platform
Designed authentication and authorization architecture implementing OAuth2, OIDC, PKCE, and JWT for global commerce platforms.
Impact
- Secured 50M+ user accounts
- Implemented zero-trust architecture
- Achieved SOC2 compliance
Web Components as a Service (CAAS)
Built scalable web components architecture using Builder.io integration, enabling marketing teams to build pages without developer intervention.
Impact
- Reduced page deployment time from days to hours
- Empowered 30+ marketing users
- Generated 200+ custom landing pages
PWA E-commerce Platform
Delivered Progressive Web App using Magento PWA Studio with SAP integration for pricing and order management.
Impact
- Improved mobile conversion by 35%
- Reduced page load time to under 2s
- Integrated real-time SAP pricing engine
B2B Commerce Cloud Platform
Architected enterprise B2B platform with microfrontend architecture and complex integrations across MuleSoft, SAP, Salesforce, and Fastly CDN.
Impact
- Processed $2B+ in annual transactions
- Served 50+ global markets
- Achieved 99.9% uptime SLA
Custom Magento Migration Tool
Designed and built automated migration tool from Magento 1 to Magento 2, handling complex data transformations and business logic migration.
Impact
- Migrated 500K+ products successfully
- Reduced migration timeline by 70%
- Zero data loss during migration
Skills & Expertise
Core Technologies
Cloud & Infrastructure
Architecture & Security
Additional
Languages
Hobbies & Interests
Technology enthusiast with passion for automation and outdoor activities. Balancing innovation with adventure.
Honors & Awards
Adobe Certified Expert
Adobe Commerce Cloud Developer certification
Solution Architecture Excellence
Recognition for outstanding GraphQL Federation architecture design
Innovation Award
Custom web components architecture implementation
Azure Solutions Architect
Certified Azure Solutions Architect Expert
Team Excellence Award
Outstanding contribution to enterprise platform delivery
AWS Certified Developer
AWS Certified Developer - Associate
Recommendations
Mikel Bitson
Senior Software Development Manager
Hunter Douglas
“Michal worked with me on an Adobe Commerce headless project and he was a critical resource for the team as we worked to expand the built-in API functionality for our needs. Michal's work is always extremely detailed and done the best possible way. He's continually keeping up with the Adobe Commerce releases and gaining knowledge that ensures his code is current. He worked extremely well with the team, both in code reviews and in meetings. He was able to share a great deal of knowledge during his time with us. If you need a backend developer for any PHP project, especially Adobe Commerce, Michal is a great choice!”
Dex Caffery
Applications Engineer
Hunter Douglas
“I worked with Michal while at Levolor on an Adobe Commerce/PWA Studio project. From day 1 Michal was extremely valuable, being able and willing to solve our more complex needs for the project. Michal understands Adobe Commerce very well, and knows how to implement the highest standards of php code. Michal worked very well in our team, teaching and handling code reviews routinely. There are few people I have worked with that approach the same level of quality as Michals work. I learned a lot from Michal, and would choose him to be a team member on any software project I am on.”
Get In Touch
I'm always open to discussing new projects, creative ideas, or opportunities to be part of your vision. Let's build something great together.
© 2026 Michał Sagan. All rights reserved.
Product Architect at Heineken