Backend Engineer

Department: Technology

Location: Serbia

Employment Type: FullTime

About billups

We don’t trade in hype. At billups, we’re reimagining how brands show up in the real world, literally. Powered by patented technology, proprietary AI, and a global team of 400+, we’re reinventing Out-of-Home (OOH) media to help brands connect with people in physical spaces, with more precision, intelligence, and impact than ever before. We move fast, think boldly, and collaborate deeply. Fiercely independent, with a presence in 20+ countries, we back smart ideas with data, technology, and trust. Growth is on the table, professionally and personally. We invest in talent and celebrate our people, plain and simple. Curious? Let’s talk.

What You'll Do

The Software Engineer will design, code, and support services, data pipelines, and data stores for advertising applications, solve problems, collaborate with team members, and work to support manual and automated testing in an engineer-led continuous deployment environment by performing the following duties:

Core Role Duties

• Develop software that empowers customers to optimize their business processes.

• Take ownership of functionality from development through deployment.

• Be responsible for the quality of code, write tests, and learn from mistakes to build a better system and improve your skills.

• Actively participate or lead team meetings, mentor junior staff, pair-program, and learn on your own.

• Work with product owners, analysts, designers and other developers to estimate the size and scope of work.

Essential Skills

• Develop with appropriate language/framework solutions, application architecture and build REST APIs using best practices.

• Demonstrate proper use of data structures, algorithms for traversing them, and optimizing their use.

• Strive for clean, well-tested, and expressive code.

• Collaborate with product and design stakeholders.

• Write and maintain unit tests and code coverage reports; strive for continuous releases with less than 5% bugs.

• Collaborate, develop, and deliver innovative solutions to our business teams including new services and features in modern apps using experience gained from previously developed legacy apps.

• Drive results from collaboration, prototyping, test-driven CI by producing high-quality code and continuing to learn to improve the system.

What You'll Bring

Required Experience: 3-5 years

• Proven & strong knowledge of object oriented programming concepts.

• 3 or more years in-depth knowledge of C# and .Net Core framework and its tools, algorithms and features, including but not limited to DI, LINQ, Asynchronous and Concurrency patterns, REST APIs/Swagger, Architecture & Design patterns.

• Experience with database development (Microsoft SQL Server/Postgres).

• Experience with team development & source control (Git) and continuous integration/continuous delivery best practices.

• Experience with AWS or Azure cloud services is a plus.
  

Total Rewards

billups offers a competitive total rewards package designed to support employee well-being, financial security, and professional growth. Programs vary by country, location, employment status, and hours worked, and may include:

• Health and well-being benefits, where applicable.

• Annual performance-based bonus opportunities.

• Paid time off and holidays aligned with local market practices.

• Learning and development opportunities.

• Parental and family leave in accordance with local regulations.

• Opportunities for team connection and community engagement.