Senior .NET Backend Engineer – High Ownership Role
hace 2 semanas
We are hiring a true senior backend engineer to help us scale and evolve a long-running, production SaaS platform used daily by ecommerce merchants at real volume.This role is not suitable for developers who require close supervision or step-by-step guidance . We are looking for someone who can take full ownership of backend features end-to-end and deliver reliable, well-tested, production-ready solutions .If you enjoy responsibility, autonomy, and building systems that matter in the real world, this role will suit you very well.The ProductWe build an AI-enhanced ecommerce content platform that helps merchants improve conversion rates, customer trust, and organic visibility across traditional search engines (Google) and emerging AI-driven search channels (ChatGPT, Perplexity, etc.).Our platform:Serves millions of page viewsManages thousands to tens of thousands of products per clientUses LLMs to generate, maintain, and validate structured Q&A and content at scaleHas been in continuous production for 15 yearsIs profitable, stable, and growingThis is not a greenfield experiment or a short-lived startup — it is a mature product with real customers, real data, and real technical challenges.What You Will OwnDesign and implement backend features in C# / .NETBuild and maintain Azure-based services (App Services, Functions, Storage, SQL)Work hands-on with SQL Server : schema design, indexing, query optimizationIntegrate AI / LLM services where they add clear, measurable valueDeliver code that is tested, readable, maintainable, and production-readyUnderstand requirements, ask the right clarifying questions, and execute without micromanagementYou will have meaningful influence on how the system evolves technically over time.This Role Requires (Non-Negotiable)You must have done the following professionally:Built and maintained production .NET backend systems for several yearsWorked on a SaaS or high-traffic system , not only internal toolsBe very solid in programming fundamentals (data structures, async flows, error handling, separation of concerns)Debugged real production issues and taken responsibility for fixing themWorked independently with minimal supervisionHave 6+ years of full-time professional programming experienceBe fluent in EnglishPractical requirements:Spanish residency and valid working permitAbility to meet face-to-face in Barcelona every ~2 monthsTechnical ExpectationsStrong C# / .NET backend experienceSolid SQL Server knowledge (queries, indexes, schema design)Azure experience in real production environmentsFamiliarity with REST APIs and async patternsComfortable reading, understanding, and improving existing codebasesSome frontend experience (MVC, JavaScript, basic UI logic)Experience with:LLM APIs (OpenAI, Azure AI)Shopify / BigCommerce…is a bonus , not a substitute for strong backend fundamentals.How We WorkSmall team, high trustClear, written requirements and expectationsVery little hand-holdingStrong focus on quality, correctness, and follow-throughPreference for calm, thoughtful engineering over rushed outputWe value people who care about doing things properly and take pride in their work.Practical Details100% remote (Catalonia-based)Flexible working hoursCompetitive salary: €40,000 – €65,000 , depending on demonstrated seniority and ownership levelLong-term role with room to grow into technical and architectural leadership
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Senior .NET Backend Engineer – High Ownership Role
hace 1 semana
barcelona, España Jordan martorell s.l. A tiempo completoWe are hiring a true senior backend engineer to help us scale and evolve a long-running, production SaaS platform used daily by ecommerce merchants at real volume. This role is not suitable for developers who require close supervision or step-by-step guidance . We are looking for someone who can take full ownership of backend features end-to-end and deliver...
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Barcelona, España Jordan martorell s.l. A tiempo completoWe are hiring a true senior backend engineer to help us scale and evolve a long-running, production SaaS platform used daily by ecommerce merchants at real volume.This role is not suitable for developers who require close supervision or step-by-step guidance . We are looking for someone who can take full ownership of backend features end-to-end and deliver...
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Senior .NET Backend Engineer – High Ownership Role
hace 2 semanas
Barcelona, España Answerbase A tiempo completoWe are hiring aSiga leyendo para comprender completamente lo que este trabajo requiere en cuanto a habilidades y experiencia. Si su perfil encaja, presente su candidatura.true senior backend engineerto help us scale and evolve a long-running, production SaaS platform used daily by ecommerce merchants at real volume.This role isnot suitable for developers who...
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Senior .NET Backend Engineer – High Ownership Role
hace 2 semanas
Barcelona, Barcelona, España Answerbase A tiempo completoWe are hiring atrue senior backend engineerto help us scale and evolve a long-running, production SaaS platform used daily by ecommerce merchants at real volume.This role isnot suitable for developers who require close supervision or step-by-step guidance. We are looking for someone who can take full ownership of backend features end-to-end and...
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Senior.NET Backend Engineer
hace 2 semanas
Barcelona, España Answerbase A tiempo completoWe are hiring a true senior backend engineer to help us scale and evolve a long-running, production SaaS platform used daily by ecommerce merchants at real volume. Por favor, lea detenidamente la siguiente descripción del puesto para asegurarse de que encaja con el perfil antes de enviar su solicitud. This role is not suitable for developers who require...
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Senior.NET Backend Engineer – High Ownership Role
hace 2 semanas
Barcelona, España Answerbase A tiempo completoWe are hiring aSiga leyendo para comprender completamente lo que este trabajo requiere en cuanto a habilidades y experiencia. Si su perfil encaja, presente su candidatura.true senior backend engineerto help us scale and evolve a long-running, production SaaS platform used daily by ecommerce merchants at real volume.This role isnot suitable for developers who...
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Senior Backend Software Engineer .NET
hace 1 semana
barcelona, España Materialise A tiempo completoJoin to apply for the Senior Backend Software Engineer .NET role at Materialise 1 day ago Be among the first 25 applicants Join to apply for the Senior Backend Software Engineer .NET role at Materialise Develop and maintain back-end services within a structured and organized framework Implement architectural patterns and methodologies to support system...
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Senior Backend Engineer
hace 3 días
Barcelona, Barcelona, España Insight International (UK) Ltd A tiempo completoRole: Senior Backend Engineer (.Net)Location: Barcelona, SpainJob Type: ContractRole Summary:The Senior Backend Engineer will play a critical role in building the core services and APIs for the project. Working closely with the Lead Backend Engineer, this role will be responsible for writing high-quality code, developing robust data solutions, and...
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Senior .NET Backend Engineer | Microservices
hace 2 semanas
barcelona, España Jordan martorell s.l. A tiempo completoA global AI-native technology solutions provider is seeking a Senior .Net Developer to design and maintain microservices and APIs in Barcelona. The ideal candidate will have 5+ years of backend development experience, proficiency in .NET and SQL Server, and expertise in RESTful APIs. This role offers a high-impact environment and commitment to professional...
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Senior Backend Engineer, .NET for Guest Experience
hace 2 semanas
Barcelona, España Mews A tiempo completoA hospitality technology company in Cataluña, Barcelona is seeking a Senior Software Engineer to enhance backend services in C# and .NET. The role involves building features that optimize guest experiences, including check-in and messaging systems. Candidates should have a strong background in backend development, with 4–5+ years of experience in complex...
