Senior C#/.NET Developer

About the company

Mapex is a leading Bulgarian geoinformation company, providing GIS solutions and geodetic services on the Bulgarian market for over 24 years. Our technology solutions enable effective management of geospatial data, workflows, and assets for organizations across both the public and private sectors. Our team consists of highly experienced specialists in information technology and geodesy.

What we believe in

We value entrepreneurship, innovative thinking, and practical technological solutions. We believe that sustainable success comes through teamwork, responsibility, and consistency — this is how we create products that make our clients’ work more efficient and meaningful.

In connection with the expansion of our team, we are looking for:

Senior C#/.NET Developer

You’ll be working with a toolkit that includes

• .NET (C#)
• Entity Framework
• Docker
• CI/CD (Jenkins)
• Git
• Оn-premise private cloud infrastructures

What you’ll need to succeed in this role:

• Extensive experience with ASP.NET and back-end web development, preferably more than 10 years
• Strong proficiency in Object-Oriented Programming (OOP) principles
• Hands-on experience working with relational databases (e.g., MSSQL, PostgreSQL)
• Solid understanding of agile development methodologies
• Proficiency with version control systems, particularly Git
• Experience with building SaaS products and SaaS cross-cutting concerns, building microservice architecture
• Excellent troubleshooting, debugging, and root cause analysis skills
• Professional fluency in English (written and verbal)
• Strong communication and interpersonal skills, with the ability to work effectively within a collaborative team environment
• High standard of work ethics and a spirit of teamwork
• High degree of “ownership” – the ability to determine what needs to be done and make it happen

It’s a big plus if you also bring

• Familiarity with CSS3 and HTML5
• Understanding JavaScript, TypeScript, React in order to collaborate with Front-End developers
• Experience with message brokers and caching solutions (e.g., Kafka, Redis, RabbitMQ) for inter- and intra-service communications
• Experience with developing automated tests, such as unit tests, integration test and end-to-end test

In this role, you’ll be expected to

• Write clean, maintainable, scalable, secure and efficient code
• Conduct code reviews and provide constructive feedback to peers
• Actively contribute to the design, development, and deployment of complex software solutions, ensuring high standards of quality, performance, and scalability
• Actively participate in all stages of the product lifecycle
• Collaborate closely with cross-functional teams to deliver business value and drive project success

We offer

• Competitive remuneration
• Training and career development opportunities
• Long-term employment in Bulgaria’s largest geoinformation company
• Work in an ambitious team of professionals eager to develop
• Full-time employment
• Additional health insurance
• Other social benefits

Why join us?

At Mapex, you will become part of a team of professionals who work with trust, share common values, and have the freedom to realize their ideas. With us, you will have the opportunity to:

• Work on innovative projects with real meaning
• Develop and learn in a dynamic technological environment
• Be valued for your contribution and ideas

If you are looking for a place where your skills and ideas can flourish, we would be delighted to have you join our team. Please send us your CV with a recent photo.