Keystone Solutions

Senior .Net Developer

Keystone Solutions  •  Kingdom of Belgium (Remote)  •  3 hours ago
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Job Description

Mission Overview:

As a Senior .NET Developer, you will play a key role in designing, developing, and maintaining robust software solutions based on Microsoft technologies. You will bring your technical expertise to ensure code quality, solution sustainability, and system performance. Additionally, you will serve as a technical mentor for other team members, all while working on-site at our client's location as part of a consultancy mission representing Keystone Solutions.

Responsibilities:

  • Actively participate in the development of software components in .NET (Framework and Core);
  • Design scalable technical solutions in collaboration with the architecture team;
  • Provide technical guidance to team members and foster a culture of excellence;
  • Conduct code reviews and ensure adherence to best development practices;
  • Analyze functional requirements with analysts and translate them into technical solutions;
  • Ensure the quality, performance, security, and maintainability of applications;
  • Participate in optimizing system performance;
  • Integrate and evaluate new technologies in line with business objectives.

Behavioral Skills:

  • Critical analysis and information integration skills;
  • Structured and solution-oriented thinking;
  • Ability to generate viable alternatives and draw relevant conclusions;
  • Technical leadership and collaborative spirit;
  • Resilience and adaptability to technical or contextual changes.

Language Skills:

  • Fluency in one of the two national languages: FR or NL (level C2);
  • Very good level of English (level C1).

What We Offer:

  • An interesting job in ICT and Data services that impacts society, with numerous benefits:
  • A good work-life balance;
  • Flexible working hours within a 40-hour week (7:30 AM to 8:00 PM with fixed slots between 9:00 AM and 12:00 PM and 1:00 PM and 4:00 PM);
  • Possibility of remote work;
  • Workspaces organized according to activities;
  • Easy accessibility via public transport;
  • Parking for cars and bicycles in the building;
  • Individual lockers;
  • Company restaurant;
  • Various self-development opportunities: training and learning possibilities (to be pursued outside working hours) via our e-academy self-training platform or through the Microsoft Enterprise Skills Initiative platform.

If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today at Keystone Solutions Career Portal

Duration: 29/06/2026 - 31/12/2026 7 months • (full time)

Skills required:

  • ASP .NET Web API - Level: Confirmed - Most recent: Any time
  • Authentication/Authorization (JWT, OIDC, claims) - Level: Confirmed - Most recent: Any time
  • Blazor - Level: Confirmed - Most recent: Any time
  • C# / .NET (Core, 10) - Level: Expert - Most recent: Any time
  • Entity Framework Core - Level: Confirmed - Most recent: Any time
  • MVC - Level: Confirmed - Most recent: Any time
  • REST API's - Level: Confirmed - Most recent: Any time
  • REST, Swagger/OpenAPI - Level: Confirmed - Most recent: Any time
  • SQL Server - Level: Confirmed - Most recent: Any time
  • Testing (unit + integration) - Level: Confirmed - Most recent: Any time

Language requirements:

Dutch
Level Active knowledge
English
Level Passive knowledge
French
Level Active knowledge

Screening questions:

- Ik ga ermee akkoord om minimaal 2x per week op kantoor te Brussel te komen werken. Je m'engage à travailler au bureau de Bruxelles au moins deux fois par semaine.
- Ik ga ermee akkoord om te telewerken binnen de Belgische landsgrenzen. J'accepte de faire du télétravail en Belgique.

Keystone Solutions

About Keystone Solutions

At Keystone Solutions, we specialize in bridging technology and talent to deliver a seamless IT experience.

With a focus on efficiency and innovation, we streamline your IT services, ensuring that you can focus on what you do best while we handle the complexities of your IT ecosystem. From strategic planning through to execution, we are your partners in creating a harmonious technological environment that propels your business forward.

Our Services:

- Hyperautomation: Embrace efficiency with Keystone Solutions' hyperautomation. Integrating Al, ML, and RPA, we automate and optimize your business processes, elevating operational excellence and decision-making.

- IT Consulting: Our IT consultancy at Keystone Solutions navigates you through the complexities of technology. We provide strategic insights, from system architecture to digital transformation, fueling your business growth.

- Software Development: Keystone Solutions excels in crafting custom software tailored to your needs. From innovative apps to system integrations, we transform your ideas into dynamic digital solutions.

- IT Security: Secure your digital landscape with Keystone Solutions. We offer comprehensive cybersecurity measures, from risk assessments to incident response, safeguarding your data and operations.

Industry
Unknown
Company Size
11-50 employees
Headquarters
Brussels, BE
Year Founded
2014
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