Lead Backend Engineer (Adobe Commerce / Magento)

Decima builds and evolves complex commerce systems that power global brands.

We’re looking for a Lead Backend Engineer who operates at an architect level but stays deeply hands-on.

Most of our clients already have large, business-critical Adobe Commerce (Magento 2) platforms in place. Your role is not to rebuild them from scratch — but to carefully evolve, extend, and improve them without breaking what already works.

This requires a different mindset: understanding existing systems deeply, making safe and well-reasoned changes, and balancing long-term architecture with real-world constraints.

You’ll be the person engineers rely on when changes are risky, and the one clients trust when stability matters as much as progress.

Role Overview:
• In this role, you will lead the evolution of existing enterprise Adobe Commerce Cloud platforms — introducing new features, integrations, and improvements while preserving system stability.

• You’ll work within complex, already-built ecosystems, making thoughtful architectural decisions that respect existing constraints and minimize risk.

• This is a hands-on role — you’ll actively contribute to implementation, review critical code, and ensure that every change is safe, scalable, and aligned with the overall system design.

Responsibilities:
• Own architecture decisions within existing Magento 2 systems — balancing improvement with stability.

• Analyze and deeply understand legacy codebases and current system behavior before making 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 realistic solutions.

• Document decisions with clear reasoning and trade-offs.

Requirements:
Core Technical Requirements

• 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.

Engineering Mindset

• Experience working with large, existing Magento 2 codebases (not only greenfield projects).

• Strong ability to understand and safely modify legacy systems.

• Experience delivering improvements without full rewrites.

• Ability to balance ideal architecture with real-world constraints.

• Strong debugging and root-cause analysis skills in complex systems.

• Experience working in environments where system stability is critical. В

We Offer:
• Work on enterprise commerce systems powering global brands.

• Real architectural ownership

• Supportive, transparent, and collaborative team culture.

• Ongoing professional development and learning support.