Lead Backend Architect for Magento 2 & Adobe Commerce

Decima Digital Inc.; Comunidad de Madrid; On-site; EUR 90,000 - 120,000; Full time

Job summary

Decima Digital Inc. is seeking a Lead Backend Engineer who operates at an architect level but stays hands-on, focused on evolving Magento 2/Adobe Commerce Cloud platforms for large enterprise clients while preserving stability.

You will analyze legacy systems, design safe extensions and integrations, lead architectural decisions, and review code to ensure scalable, non-breaking changes across ERP, PIM, OMS, and CRM integrations.

Qualifications

• 8+ years of professional software development experience.
• 5+ years of hands-on Magento 2 / Adobe Commerce Cloud development.
• Deep understanding of Magento 2 architecture - DI, plugins, service contracts, extension attributes, event/observer patterns.
• Proven experience designing integrations with ERP, OMS, or PIM systems (SAP, NetSuite, Akeneo, or similar).
• Strong PHP engineering skills, OOP, and design patterns.
• Experience with APIs (REST, GraphQL) and service-oriented architecture.
• Experience with cloud environments and DevOps (CI/CD, Docker, AWS/GCP, Magento Cloud).
• Prior experience in a lead or architect-level role with ownership of technical decisions.
• Strong communication skills - able to explain technical decisions clearly.

Responsibilities

• Own architecture decisions within existing Magento 2 systems — balancing improvement with stability.
• Analyze and understand legacy codebases and current system behavior before changes.
• Design extensions and integrations that fit cleanly into existing architecture.
• Ensure backward compatibility and minimize regression risk in all changes.
• Lead complex integrations with ERP, PIM, OMS, CRM systems within existing environments.
• Review critical code changes with a focus on safety, performance, and maintainability.
• Identify architectural risks and propose safe, incremental improvements.
• Guide the team in making thoughtful, non-breaking changes.
• Participate in discovery and pre-sales — assessing existing systems and proposing solutions.
• Document decisions with clear reasoning and trade-offs.

Skills

8+ years software development

Magento 2 / Adobe Commerce Cloud

PHP engineering

OOP & design patterns

REST & GraphQL APIs

Cloud & DevOps

Lead / architect-level ownership

Clear communication

Tools

Magento 2

Adobe Commerce Cloud

Docker

AWS/GCP

CI/CD

Job description

Decima Digital Inc. is seeking a Lead Backend Engineer who operates at an architect level but stays hands-on, focused on evolving Magento 2/Adobe Commerce Cloud platforms for large enterprise clients while preserving stability.

You will analyze legacy systems, design safe extensions and integrations, lead architectural decisions, and review code to ensure scalable, non-breaking changes across ERP, PIM, OMS, and CRM integrations.