Lead Backend Engineer (Adobe Commerce / Magento) at Decima Digital

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.