Backend Application Developer – Core Specialist Tier
Location: Basel, Switzerland
Contract Duration: 3 years, with possible extension
Experience Required: 3+ years. Industry Experience: Utilities & Energy (Energie & Wasserversorgung) or Telecommunications or Banking & Financial Services or Information Technology & Services
Role Overview: We 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.
Ideal candidate: The 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.
Strategic Scope
The role is 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.
Core Responsibilities
- Requirement Extraction: Systematically analyse, document, and map granular business requirements to engineer structural software components, robust middleware layers, and complete enterprise backend applications.
- Architectural 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.
- Data Modeling: Conceptualise, construct, and manage normalized and denormalized relational database schemas, complex entity relationship models, and performance‑tuned object‑relational mapping configurations.
- Web 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.
- Access & 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).
- Environment Deployment Support: Manage, maintain, and provision isolated localized, staging, and continuous testing application runtime environments, orchestrating automated system packaging and localized deployment workflows.
- Defect 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.
Required Skills & Experience
- Minimum of 3 to 5+ years of demonstrable enterprise software development tenure in multi‑tier server architectures.
- Strong experience with .NET Framework, including .NET Framework 4.0, .NET Core, MySQL.
- Good knowledge of MVC architecture.
- Strong database experience with Microsoft SQL Server.
- Working knowledge of Python.
- Experience developing APIs, backend services, and enterprise applications.
- Good understanding of secure coding, performance optimisation, and software development lifecycle practices.
- Ability to work independently as well as part of a distributed project team.
- Languages: 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.
- Swiss Compliance: Must hold EU/EFTA nationality or possess an active, valid Swiss permanent residency/work card (C Permit or unrestricted B/G Permit).
What We Offer
- Opportunity to work on challenging projects and contribute to the growth of our company
- Collaborative and dynamic work environment
- Professional development and growth opportunities
- Competitive salary and benefits package
