Backend Application Developer (Core Specialist Tier)

pBackend Application Developer – Core Specialist Tier /p pstrongLocation: Basel, Switzerland /strongbrstrongContract Duration: 3 years, with possible extension /strongbrstrongExperience Required: 3+ years. /strong /p pstrongIndustry Experience: Utilities Energy /strong strong(****emEnergie Wasserversorgung) or Telecommunications or Banking Financial Services or Information Technology Services /em /strong /p pRole Overview /p pstrongWe are looking for an experienced Backend Application Developer to support a long-term enterprise project in Basel. This is a 3-year contract role with the possibility of extension. /strong /p pstrongThe ideal candidate will have strong hands-on experience in designing, developing, and maintaining secure, scalable, and high-performance backend applications. The role requires solid expertise across Microsoft and open-source technologies, including .NET Framework, .NET Core, Microsoft SQL Server, MySQL, Python, and MVC architecture. /strong /p pstrongStrategic Scope: Responsible for the rigorous structural translation of complex technical business processes and energy-sector transactions into scalable, highly available object-oriented server designs, secure multi-tier logical services, integrated API configurations, and decoupled microservice patterns. /strong /p h2Tasks /h2 pstrongCore Responsibilities /strong /p ul listrongRequirement Extraction: Systematically analyse, document, and map granular business requirements to engineer structural software components, robust middleware layers, and complete enterprise backend applications. /strong /li listrongArchitectural Design: Define and implement strict functional and non-functional runtime profiles, including high availability, automated horizontal scalability, enterprise-grade security protocols, and minimal processing latency parameters. /strong /li listrongData Modeling: Conceptualise, construct, and manage normalized and denormalized relational database schemas, complex entity relationship models, and performance-tuned object-relational mapping configurations. /strong /li listrongWeb Service Implementation: Build, test, document, and support enterprise web service integrations utilizing asynchronous RESTful APIs, high-security SOAP communication paths, and structured microservices architecture layouts. /strong /li listrongAccess Federation Protocols: Configure and map identity federation integrations across legacy and modernized components by binding application endpoints strictly to modern access frameworks (OAuth2, OpenID Connect, SAML 2.0). /strong /li listrongEnvironment Deployment Support: Manage, maintain, and provision isolated localized, staging, and continuous testing application runtime environments, orchestrating automated system packaging and localized deployment workflows. /strong /li listrongDefect Analysis Root-Cause Remediation: Provide critical tier-3 engineering diagnostic support, proactively profiling running server systems to detect, reproduce, isolate, and permanently resolve complex technical defects within high-load production software systems. /strong /li /ul h2Requirements /h2 pRequired Skills Experience /p ul listrongMinimum of 3 to 5+ years of demonstrable enterprise software development tenure in multi-tier server architectures. /strong /li listrongStrong experience with .NET Framework, including .NET Framework 4.0, .NET Core, MySQL. /strong /li listrongGood knowledge of MVC architecture. /strong /li listrongStrong database experience with Microsoft SQL Server /strong /li listrongWorking knowledge of Python. /strong /li listrongExperience developing APIs, backend services, and enterprise applications. /strong /li listrongGood understanding of secure coding, performance optimisation, and software development lifecycle practices. /strong /li listrongAbility to work independently as well as part of a distributed project team. /strong /li /ul pstrongLanguages : Flawless bilingual/native-level business German communications proficiency (C1/C2 level written and spoken) is required. The candidate must present seamlessly in German during the technical panel interview (Anbieterfachgespräch). /strong /p ul listrongSwiss Compliance : Must hold EU/EFTA nationality or possess an active, valid Swiss permanent residency/work card (C Permit or unrestricted B/G Permit). /strong /li /ul pstrong**What We Offer:** /strong /p pstrong* Opportunity to work on challenging projects and contribute to the growth of our company /strongbrstrong* Collaborative and dynamic work environment /strongbrstrong* Professional development and growth opportunities /strongbrstrong* Competitive salary and benefits package /strong /p pstrongRecruitment Process – AI Screening with TARA /strong /p ul listrongAs part of our recruitment process, candidates may be invited to complete an initial AI-powered screening with TARA, the interview agent. /strong /li listrongTARA helps us make the hiring process faster, fairer, and more consistent by asking structured, role-relevant questions based on the job requirements. The interview is designed to understand your experience, skills, motivation, and suitability for the role. /strong /li /ul pstrongThe AI screening interview may include: /strong /p ul listrongQuestions about your professional background and relevant experience /strong /li listrongRole-specific technical or functional questions /strong /li listrongQuestions about your motivation, availability, and communication skills /strong /li listrongThe interview can usually be completed online in 15-20 minutes at a time that is convenient for you. Your responses will be reviewed as part of the overall selection process, together with your CV, application details, and any follow-up interviews with the hiring team. /strong /li /ul pstrongCandidate Experience.: /strong /p ul listrongWe use AI to support the recruitment process, but final hiring decisions are made by people. Human recruiters and hiring managers remain involved in reviewing candidates and making selection decisions. /strong /li listrongWe are committed to a transparent, respectful, and fair candidate experience. Your data will be handled confidentially and in accordance with applicable data protection requirements. /strong /li /ulbr