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 OverviewIn this role, you will lead the evolution of existing enterprise Adobe Commerce Cloud platforms — introducing new features, integrations, and improvements while preserving system stabilityYou’ll work within complex, already built ecosystems, making thoughtful architectural decisions that respect existing constraints and minimize riskThis 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 designResponsibilitiesOwn architecture decisions within existing Magento 2 systems — balancing improvement with stabilityAnalyze and deeply understand legacy codebases and current system behavior before making changesDesign extensions and integrations that fit cleanly into existing architectureEnsure backward compatibility and minimize regression risk in all changesLead complex integrations with ERP, PIM, OMS, CRM systems within existing environmentsReview critical code changes with a focus on safety, performance, and maintainabilityIdentify architectural risks and propose safe, incremental improvementsGuide the team in making thoughtful,



non‑breaking changesParticipate in discovery and pre‑sales — assessing existing systems and proposing realistic solutionsDocument decisions with clear reasoning and trade‑offsRequirementsCore Technical Requirements8+ years of professional software development experience5+ years of hands‑on Magento 2 / Adobe Commerce Cloud developmentDeep understanding of Magento 2 architecture – DI, plugins, service contracts, extension attributes, event/observer patternsProven experience designing integrations with ERP, OMS, or PIM systems (SAP, Net Suite, Akeneo, or similar)Strong PHP engineering skills, OOP, and design patternsExperience with APIs (REST, Graph QL) and service‑oriented architectureExperience with cloud environments and Dev Ops (CI/CD, Docker, AWS/GCP, Magento Cloud)Prior experience in a lead or architect‑level role with ownership of technical decisionsStrong communication skills – able to explain technical decisions clearly.Engineering MindsetExperience working with large, existing Magento 2 codebases (not only greenfield projects)Strong ability to understand and safely modify legacy systemsExperience delivering improvements without full rewritesAbility to balance adecuado architecture with real‑world constraintsStrong debugging and root‑cause analysis skills in complex systemsExperience working in environments where system stability is critical. ВWe OfferWork on enterprise commerce systems powering global brandsReal architectural ownershipSupportive, transparent, and collaborative team cultureOngoing professional development and learning supportWe may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

📌 Lead Backend Engineer (Adobe Commerce / Magento) (Madrid)
🏢 Decima Digital
📍 Madrid