Backend Software Developer

Your Mission at Fourthline 

Prevent financial crime by building best-in-class software alongside an awesome and talented team. As a backend engineer at Fourthline, you will: 

• Design, develop, maintain, and improve our microservices, and take responsibility for thorough testing and reliable deployments of your stories. 
• Professionally manage your tasks, priorities and deliverables, taking joint ownership with your teammates for the sprint goals. 
• Utilize your experience to contribute to our growth through lessons learned from your successes and failures. 
• Take responsibility for engineering excellence and architectural decision-making within your team. 
• Contribute to thorough documentation—crucial for ensuring success and minimizing questions! 
• Understand the entire development lifecycle and work closely with other members in squads, including Platform and QA teams. 
• Employ both technical and soft skills to address challenges, recognizing that solutions often require a blend of technology-based and people-based strategies. 
• Coach and mentor team members in Amsterdam and Barcelona on an as-needed basis. 

Emphasis on Collaboration 

At Fourthline, we foster a collaborative culture informed by industry knowledge (FinTech) and deep understanding of our business objectives. You will actively participate in chapter meetings, knowledge sharing sessions and cross-discipline alignments with other teams and engineering disciplines.  

Career Growth and Development 

At Fourthline, we offer opportunities for career progression and learning, allowing you to work alongside and learn from experienced engineers. As you grow within our team, there are possibilities to grow on our career ladder (we have Staff Engineer level and beyond), with clear pathways to further your technical, leadership and communication competencies. 

Our Stack 

.NET 5-8 – Our cloud-based microservices architecture includes REST APIs, Docker, Message Queues (RabbitMQ), RDBMS (PostgreSQL), Wolverine, Marten (Doc + Event stores), and much more! 

Job Requirements 

• 3+ years of software development experience in one or more general-purpose programming languages. 
• Expert knowledge of .NET Core, 3.x, .NET 5-8. 
• Proficiency in C# (version 10 or later). 
• Experience in unit and integration testing with XUnit (MSTest/NUnit are a plus). 
• Familiarity with ORMs (EF Core) and expert knowledge of Linq. 
• Experience in using .NET Web API to implement REST APIs. 
• Understanding of SOLID principles and Domain-Driven Design (DDD). 
• Knowledge of common software design patterns. 
• Experience with Git and CI/CD in Azure DevOps. 
• Usage of cloud providers such as AWS and Azure; experience with ECS and Terraform is highly valued. 
• Language skills: English full professional proficiency.