Join the fintech revolution with Mambu, the leading SaaS cloud banking platform. We're on a mission to make banking better for a billion people. We're engineering the future of financial services with AI at its core. At Mambu, AI isn't a feature — it's how we're rebuilding banking from the ground up. If you're ready to apply cutting-edge technology to problems that affect millions of people, your next chapter starts here. Learn more here. We are hiring Senior Backend Software Engineers across all teams. As a Senior Backend Software Engineer, you will be responsible for:Developing bank connectivity and payment automation products, features, and capabilities, with a focus on security, stability, and performanceOwning architectural decisions for complex, high-impact projects and driving technical direction across teamsCollaborating with Product Managers and DevOps Software Engineers to maintain a fast-paced, iterative, and continuously improved product development and delivery processApplying security by design principles to public and internal APIsSolving architectural and technical challenges to reduce complexity while creating value for customers and usersMentoring and upskilling junior and mid-level engineers through code reviews, pair programming, and technical guidanceDefining and executing Numeral's technical roadmap to improve team velocity and control technical debtActing as a technical reference and escalation point for critical incidents and high-stakes production issues. 5+ years of professional software engineering experience, with significant hands-on experience in GolangBackground in fintech, banking, or payments (SEPA, Swift, Ebics…), with an understanding of the regulatory and operational constraints of the industryProven track record designing and owning complex, distributed backend systems in productionDeep experience with relational databases and SQL, including high-concurrency environments, transaction management, and isolation levels at scaleStrong understanding of the challenges of running a high-volume SaaS platform at scale, with a track record of producing quality, maintainable, well-documented code that respects best practicesAdvanced API design skills, with a strong focus on security, versioning, and documentationDemonstrated ability to mentor engineers and elevate team-wide engineering standardsYou are curious, interested in business understanding and product orientedYou are highly autonomous, proactive, and comfortable driving ambiguous technical problems to resolutionNice-to-have skillsDevOps appetite - you have been in involved in implementing / using CI using Gitlab and KubernetesCloud hosting with AWS and experience with EC2, S3, EKS, RDS…Familiar with Kafka or similar message broker middlewares

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Senior Software Engineer