Back-end Developer (C#/.NET) – Business Logic Team

Simplicity. Applied.” is more than just a slogan at M2M Services— it’s the driving force behind our global tech leadership. With headquarters in Bulgaria and offices in the United States, our journey is marked by constant growth and transformation.

We focus on creating and developing innovative IoT solutions for the security industry. With our best-in-class engineering capabilities, we treat our customers to the highest value of dependable and affordable products.

Our footprint is spread over 50+ countries on 6 continents, serving over 10 000 businesses. And advancing the daily lives of more than 1,5 million end users.

We value people as much as we value technology. As a team, we foster curiosity, intelligence, proactiveness, and creativity to navigate our way to innovation and progress.

Who you are:

You are someone to do what is right, not what is easy. A great team player who truly knows that the whole is greater than the sum of its parts. A smart achiever to constantly aim for efficiency. Someone to do what you do and strive to do it best. A curious explorer, ever ready to take on a new challenge. A proactive self-starter who leads and encourages others to lead. So then, great – you’re just like every one of us!

What is your new role?

As a Back-end Developer (C#/.NET), you will:

•  Develop, maintain, and enhance scalable back-end solutions using C# and .NET technologies.
• Collaborate with cross-functional teams, including colleagues from the United States, to design and implement business logic solutions.
• Work with Microsoft tools and technologies, ensuring seamless integration with our existing systems.
• Optimize application performance, troubleshoot issues, and implement improvements.
• Ensure high-quality and maintainable code by participating in code reviews and testing.
• Stay up to date with the latest .NET frameworks, cloud solutions, and best practices.

What it takes:

• Bachelor’s degree in Computer Science, Software Engineering, or a related technical field.
• 3+ years of experience in C#/.NET development.
• Strong knowledge of ASP.NET Core, Entity Framework, and SQL databases.
• Experience with cloud services (Azure, AWS) and microservices architecture is a plus.
• Understanding of RESTful APIs, authentication mechanisms (OAuth, JWT), and WebSockets.
• Proficiency in unit testing, CI/CD pipelines, and DevOps practices.
• Self-motivated with excellent organization and time management skills.

What it gives:

• being part of a Bulgarian product company and a constantly growing global leader, with a series of international awards in the security field.
• we offer the opportunity to make a great impact on millions of lives, making them better and safer with our in-house developed and built products.
• having the chance to excel in your role or find yourself in another by learning from our solid know-how and best-in-class professionals.
• a year-end bonus (13th salary) and generally, a flexible salary increase policy, based on proactiveness and achievement.
• premium health insurance package for you and your family.
• free parking spot or a greener option, if you’d prefer – a company-covered public transport card.
• monthly food vouchers and several corporate discounts.
• sport venues membership card (Multisport).
• complimentary breakfast, gifts for birthdays, anniversaries, childbirth and holidays.
• and last, but best – our positive company culture and refreshing regular team gatherings, Easter & Christmas parties, as well as annual team-buildings!

Please note, that we just love being all together in our office and provide on-site options only.

If it sounds like we can go well together and do great things, we’d love to hear from you!