Hybrid Senior .NET Backend Developer

at Qualco Technology

• Job title: Senior .NET Backend Developer
• Job type: Full Time
• Experience level: Senior
• Salary: Not specified
• Degree requirement: Bachelor's Degree
• Tech skills: ASP.NET, Azure, Docker, Entity Framework, Kubernetes, SDLC, SQL, .NET
• Location requirements: Hybrid, Athens, Greece

About the role

• Senior .NET Backend Developer at Quento Technologies developing and maintaining core banking software. Join a major Systemic Bank in Greece in a dynamic environment focusing on ICT solutions.

Responsibilities

• Spearheading the end-to-end design, development, and ongoing maintenance of core banking software;
• Actively participating across the full Software Development Life Cycle (SDLC), from concept to deployment;
• Creating comprehensive documentation for the design, implementation, and usage of the software systems;
• Developing test data and executing thorough testing protocols to ensure application accuracy and integrity;
• Proactively identifying, diagnosing, and resolving software defects and user-reported issues;
• Managing the seamless integration of banking applications with various third-party services;
• Working collaboratively within the IT team to guarantee the smooth and efficient operation of all systems;
• Ensuring that all activities and duties are carried out in full compliance with regulatory requirements and supporting the continued implementation of the Group Anti-Bribery and Corruption Policy.

Requirements

• Bachelor’s degree in Computer Science, Information Technology, or a related discipline
• Minimum of 5 years of professional experience in software development, with a strong focus on enterprise-level or banking systems
• Deep understanding of banking operations, financial services, and the regulatory landscape
• Exceptional problem-solving skills combined with meticulous attention to detail
• Proven ability to architect and implement scalable, efficient, and robust solutions
• Excellent communication and teamwork abilities, with a talent for effective collaboration
• Adept at managing multiple priorities in a fast-paced and evolving environment.
• **Essential Technical Expertise:**
• **Languages & Frameworks:** Expertise in C# and the .NET ecosystem, including .NET Core, .NET Framework, and Entity Framework Core;
• **API Development:** Solid experience building performance-critical Web APIs using ASP.NET Core, adhering to RESTful principles;
• **Database Skills:** Advanced proficiency in SQL, including writing complex queries, stored procedures, and performance tuning on SQL Server. A strong foundation in database design, normalization, and indexing is required;
• **Desktop & Web UI:** Proficiency in developing user-friendly Windows Forms applications and experience with interactive web development using Blazor (including component-based architecture and state management);
• **Development Environment:** High proficiency with Visual Studio, Git, GitHub, and Azure DevOps for version control and CI/CD;
• **Desirable Skills (Considered a Plus):**
• Knowledge of DevExpress components;
• Experience with testing frameworks (xUnit, NUnit) and API testing tools like Postman;
• Familiarity with containerization technologies (Docker, Kubernetes).

Benefits

• 💸 Competitive compensation, ticket restaurant card, and annual bonus programs
• 💻 Cutting-edge IT equipment, mobile and data plan
• 🏢 Modern facilities, free coffee and beverages, indoor parking, and company bus
• 👨‍⚕ Private health insurance, onsite occupational doctor, and workplace counselor
• 🏝️ Flexible working model, hybrid benefits & home equipment benefits
• 🤸‍♂️ Onsite gym, wellness facilities, and ping pong room
• 💡 Career and talent development tools
• 🎓 Mentoring, coaching, personalized annual learning and development plan
• 🌱 Employee referral bonus, regular wellbeing, ESG and volunteering activities