Backend Application Developer (Core Specialist Tier)

Allps; Zürich; Vor Ort; Vertraulich; Vollzeit

Benefits dieser Stelle

Professional development opportunities

Collaborative work environment

Competitive salary and benefits package

Zusammenfassung

Allps is seeking an experienced Backend Application Developer for a 3-year contract, based in Basel, Switzerland. You will support a long-term project by designing and maintaining high-performance backend applications utilizing .NET, SQL Server, and more. Strong proficiency in German is a must for the technical panel interview.

The role involves requirement extraction, architectural design, and defect analysis, along with the opportunity to work on complex challenges within a collaborative environment.

Qualifikationen

• Minimum of 3 to 5+ years of software development in multi-tier architectures.
• Strong experience with .NET Framework and MySQL.
• Good knowledge of MVC architecture.
• Flawless bilingual/native-level business German proficiency (C1/C2).

Aufgaben

• Analyze and document business requirements to engineer software components.
• Define and implement runtime profiles for high availability and security.
• Manage relational database schemas and optimize performance.
• Support enterprise web service integrations and microservices architecture.
• Provide critical engineering diagnostic support and resolve complex defects.

Kenntnisse

Enterprise software development

.NET Framework

MySQL

MVC architecture

Microsoft SQL Server

Python

API development

Secure coding

Jobbeschreibung

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.

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: 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.

Tasks

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 denormalised 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 modernised components by binding application endpoints strictly to modern access frameworks (OAuth2, OpenID Connect, SAML 2.0).
• Environment Deployment Support: Manage, maintain, and provision isolated localised, staging, and continuous testing application runtime environments, orchestrating automated system packaging and localised 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.

Requirements

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).

Benefits

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