Senior Staff Backend Engineer

Our partner is looking for a Staff Backend Engineer, Money Movement based in Spain. As a Staff Backend Engineer, you will lead the design and development of a new trust accounting platform that enables property managers to manage financial records and funds securely, accurately, and compliantly. Working closely with product, design, finance, and legal teams, you will translate complex business requirements into robust backend solutions. You will establish engineering standards for testing, observability, security, and continuous delivery while ensuring financial correctness remains central to every design decision. This is an opportunity to shape a critical financial product from its earliest stages and create systems that customers can confidently rely on as their businesses grow. Design, build, and operate secure, scalable, and auditable backend services that support accurate financial records and reliable fund management. - Establish strong foundations for financial correctness, data integrity, compliance, and accountability throughout the platform's architecture and operational processes. - Develop and implement quality assurance practices, including automated testing, quality gates, and CI/CD integration, to ensure reliable and predictable releases. - Collaborate with product, design, finance, and legal stakeholders to translate business and regulatory requirements into effective technical solutions. - Monitor production performance, identify failure modes and reliability risks, and continuously improve system throughput, accuracy, and operational stability. Requirements: - At least eight years of professional software engineering experience, including a minimum of two years operating at Staff Engineer level or in an equivalent senior technical leadership position. - Strong proficiency in at least one backend programming language, with experience building and maintaining production-grade services. - Proven experience designing, delivering, and operating business-critical backend systems used by real customers at scale. - Strong architectural judgment, with the ability to design systems that start simple, evolve sustainably, and balance immediate delivery needs with future scalability. -