Fourthline

FinTech

SeniorBackendSoftwareEngineer

€55–80k ~AI est. Barcelona, Barcelona, Spain
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for Senior candidates.

The Brief

“Senior Backend Software Engineer at Fourthline. Skills: Backend development, Microservices, NET, C#. Design microservices. Develop microservices”

Industry & Context.

FinTech
Problems you'll solve

Problem solving competencies

Eligibility Requirements

Work on-site at least 3 days a week

What They're Looking For.

Must Have

Minimum 5 years software development experience, Proficiency in C# (version 10 or later), Experience in unit and integration testing, Experience implementing REST APIs, Understanding of SOLID principles, Understanding of Domain-Driven Design (DDD), Experience with Git, Experience with CI/CD in Azure DevOps, English full professional proficiency

Nice to Have

MSTest/NUnit are a plus, Experience with AWS, Experience with EKS, Experience with Terraform

What You'll Do.

Develop microservices

Maintain microservices

Improve microservices

Take responsibility for testing

Take responsibility for deployments

Take responsibility for engineering excellence

Participate in architectural decision-making

Contribute to documentation

Understand development lifecycle

Work with other members in squads

How You'll Work.

Team & Collaboration

Collaborative spirit; Work closely with others; Squads; Platform teams; QA teams; Chapter meetings; Knowledge sharing sessions; Cross-discipline alignments

Process & Methodology

Sprint goals

Full Job Description

At Fourthline, our mission is to fight financial crime. We help protect the global financial system by verifying millions of identities for banks, neobanks, online brokers, crypto exchanges, and insurers like N26, Trade Republic, flatexDEGIRO, Nationale Nederlanden, Qonto, Shine, Solarisbank, and more. Having started our journey in January 2018, we're incredibly proud to count around 250 employees between our Amsterdam and Barcelona offices with over 50 nationalities. Prevent financial crime by building best-in-class SaaS solutions with our talented Anti-Money Laundering (AML) and Bank Account Verification (BAV) + Qualified Electronic Signatures (QES) teams in Barcelona—we’re looking for a Senior Backend Software Engineer who brings solid technical expertise, a product-driven mindset, and a collaborative spirit across diverse domains and skill levels. As a senior 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 participate in 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. 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 me

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