ph3About SGS /h3 pSGS is the world’s leading Testing, Inspection and Certification company. We operate a network of over b2,500 laboratories and business facilities across 115 countries /b, supported bby a team of over 100,000 dedicated professionals /b. With bmore than 145 years of service excellence /b, we combine the precision and accuracy that define Swiss companies to help organizations achieve bthe highest standards of quality, compliance and sustainability. /b /p pOur brand promise – b“when you need to be sure” /b – underscores our commitment to btrust, integrity and reliability /b, enabling businesses to bthrive with confidence /b. We proudly deliver our bexpert services /b through the bSGS name /b and a portfolio of btrusted specialized brands /b, including bApplied Technical Services /b, bBrightsight /b, bBluesign /b and bNutrasource /b. /p h3Job Description /h3 pWe are looking for a bSenior Backend Developer /b with strong technical leadership skills to shape and evolve our backend platform. You will act as a technical reference for the team, take ownership of backend architecture, improve code quality and engineering standards, and help drive a more mature, engineering‑focused culture. /p pYou will work on a SaaS platform built on .NET 10, running primarily on Azure PaaS, in an international, English‑speaking environment. /p h3Responsibilities /h3 ul liDesign, build, and evolve scalable, secure, and maintainable backend systems. /li liLead backend development efforts, driving technical design and architectural decisions. /li liServe as a technical reference for the team, supporting and mentoring other engineers.



/li liOwn the full software lifecycle—from concept and design to deployment, monitoring, and continuous improvement. /li liWork across modern and legacy systems. /li liCollaborate with product, frontend, and DevOps teams to deliver end‑to‑end solutions. /li liChampion engineering excellence by promoting best practices (Clean Code, SOLID, testing strategies). /li liArchitect and implement distributed systems and event‑driven solutions. /li liBuild and optimize CI/CD pipelines to enable fast, reliable delivery. /li liEnsure system reliability, performance, and observability in production environments. /li liMentor and support other developers through code reviews, knowledge sharing, and technical guidance. /li liContribute to technical documentation and ensure knowledge is shared effectively across the team. /li /ul h3Qualifications /h3 ul li7+ years of experience in backend development, primarily with .NET / C#. /li liStrong experience designing scalable and maintainable systems. /li liDeep understanding of software engineering principles (Clean Architecture, Domain‑Driven Design, unit/integration testing). /li liHands‑on experience with REST and GraphQL APIs. /li liSolid experience with relational databases (e.g., SQL Server)



and ORM tools such as Entity Framework Core. /li liExperience with distributed or service‑oriented architectures. /li liExperience integrating authentication and authorization solutions (e.g., Auth0). /li liStrong knowledge of asynchronous communication patterns and messaging systems (e.g., RabbitMQ, Kafka, Service Bus). /li liProven experience with CI/CD pipelines and modern DevOps practices. /li liProficiency with Git and collaborative development workflows. /li /ul h3Preferred Skills /h3 ul liExperience with Azure Functions, Azure Event Hubs, Azure Storage, and Azure AI Search. /li liExposure to Infrastructure as Code (e.g., Terraform). /li liExperience with monitoring, logging, and observability in production systems. /li liFamiliarity with Docker and containerized environments. /li liPrior experience in technical leadership or tech‑lead capacity. /li /ul h3Additional Information /h3 h3Why SGS? /h3 ul liJoin a globally recognized and stable company, a leader in the Testing, Inspection, and Certification (TIC) industry. /li liEnjoy a bflexible schedule and a hybrid work model. /b /li liAccess continuous learning opportunities through SGS University and Campus. /li liCollaborate in a multinational environment with colleagues from various continents. /li /ul h3Apply Now /h3 pAt SGS, we are committed to fostering an open, friendly, and supportive culture that thrives on teamwork. We value diversity and provide endless opportunities to learn, grow your expertise, and fulfill your potential. Apply now to join our motivated and dynamic team! /p /p #J-18808-Ljbffr

📌 Senior Backend Developer (Madrid)
🏢 SGS
📍 Madrid