pSenior Backend Engineer (PHP/Laravel) · Integrations at scale in a shipping SaaS /ppAt Shakers we're partnering with a fast-growing Italian SaaS scale-up in e-commerce logistics to bring in a Senior Backend Engineer who thinks at system level and becomes the senior technical reference of their Integration team.
Freelance project, remote, tempo pieno, with real ownership over a platform processing tens of millions of shipments every month.
/ph3The challenge /h3pThe platform automates the entire shipping process for e-commerce merchants: carrier selection, labels, tracking, notifications and cost control, integrated with hundreds of carriers and the main e-commerce platforms.
Over the last two years engineering has moved from a large monolith to microservices on AWS, organised in domain teams with end-to-end ownership.
/ppThe Integration team owns carrier and third-party integrations: asynchronous workflows, distributed systems, external APIs and plenty of tricky edge cases.
This is not a ticket-execution or bug-fixing role.
We're looking for someone who anticipates needs, makes sound architectural calls and owns what goes to production.
/ph3Responsibilities /h3pDesign and develop scalable backend services, mainly in PHP and Laravel.
/ppBuild and maintain integrations with carriers, e-commerce platforms and third-party services.
/ppDrive the evolution of the microservices architecture and distributed systems.
/ppLead the technical design of solutions and raise engineering standards in the team.
/ppWeigh architectural trade-offs across scalability, reliability, performance and maintainability.




/ppIntegrate AI and LLM capabilities to automate complex workflows.
/ppImprove performance and reliability at high transaction volumes.
/ppMentor two mid-level engineers alongside the Team Lead.
/ppCollaborate with Product, Design and Support from discovery to release.
/ph3Requirements /h3p5+ years of professional backend software engineering experience.
/ppDegree in Computer Science, Engineering or a related field.
/ppStrong system design skills, clean architecture and a clear grasp of engineering trade-offs.
/ppHands-on experience with microservices, asynchronous patterns and distributed systems.
/ppTrack record designing and operating reliable, production-grade services.
/ppOwnership of technical decisions and the ability to explain the reasoning behind them.
/ppFluent written and spoken English (C1): the engineering team works in English.
/ph3Nice to have /h3pHands-on PHP and Laravel (strong backend experience with comparable stacks also considered).
/ppSaaS or high-volume platforms, and third-party integrations / external APIs.
/ppIntegrating AI/ML or LLM capabilities into products.
/ppFull-stack exposure to support React when needed.
/ppBackground in e-commerce, logistics, shipping or carrier integrations.
/ph3Why this project?
/h3pRemote, with occasional team meetups at HQ in Italy.
/ppReal scale: millions of API calls and shipments every month.
/ppArchitecture work, not just implementation, in an autonomous cross-functional team.
/ppAI-enabled engineering, both in how you build and what you build.
/ppLong-term collaboration, with a possible move to a permanent role.
/p #J-*****-Ljbffr

📌 Senior Backend Engineer (Php/Laravel) (Milano)
🏢 Shakers
📍 Milano