**Liminal** is a global market intelligence and strategic advisory firm specializing in digital identity, financial crime and compliance, and IT security technology solutions across industries while also catering to the private equity and venture capital community. Founded in 2016, **Liminal** offers strategic and analytical services supporting executive decision\-making at all product and business lifecycle stages. We advise some of the world’s most prominent business leaders, investors, and policymakers on building, acquiring, and investing in the next generation of solutions and technologies. We provide access to proprietary data and analysis, strategic frameworks, and integrated insights on the industry’s only market intelligence platform. Every major company in the world has started focusing on the next generation of digital identity technologies as a necessity for continued growth and security. Our team works with a myriad of organizations, from Fortune 100s to startups, across industries including financial services, technology, telecommunications, and the P2P economy. At **Liminal**, we help businesses build solutions, execute strategies, invest intelligently, and connect with key decision\-makers. We know that it’s in the sharing of discovery and insights that groundwork is laid, problems are solved, and entire sectors advance at the speed of light. Keeping information to ourselves delays progress for all. At **Liminal**, we don't just respond to the market; we define it. **About the role** We are on the hunt for a **Senior Software Engineer** with a **backend focus** to join our team. This role is crucial for the development and scaling of our **backend database systems**, connecting our new data microservices, and supporting the core infrastructure of our platform. As a key player in our engineering team, you'll lead efforts to enhance our product's backend capabilities, ensuring it meets the highest standards of scalability, performance, and reliability. **What you'll do** * **Technical Excellence**: Lead the development of **scalable backend systems**, focusing on **high\-performance databases** with experience in **MongoDB** and **BigQuery**. * **System Architecture**: Design and implement **robust backend architectures** that support **complex data processing** and **low volume, high availability storage requirements**. Understand and apply best practices in **Identity and Access Management** to secure our systems and data. * **Performance Optimization**: Continuously identify, evaluate, and implement **performance optimizations** across our backend systems to ensure **fast and reliable access to data**. * **Quality Assurance**: Advocate for and maintain **high standards of code quality** and **system reliability** through **comprehensive testing** and **continuous integration practices**. * **Collaborative Development**: Work closely with **product managers, front\-end developers, and designers** to ensure seamless integration and alignment between backend services and user\-facing features. * **Innovation and Growth**: Research and integrate **new technologies** and **methodologies** to keep our backend systems at the forefront of industry standards, focusing on **scalability, security, and efficiency**. * **Ownership of Software Solutions**: Taking ownership of the **analysis, design, development**, and **delivery** of software solutions. * **Defining Application Requirements**: Defining requirements for **new applications** and customization in accordance with **Mastercard standards, processes**, and **best practices**. * **Application Development and Customization**: Developing, customizing, and testing **applications** to align with **Mastercard’s specifications**. * **Technical Training**: Providing **technical training** to fellow team members. * **Design Sessions**: Actively participating in **design sessions**. * **Sprint Planning and Backlog Management**: Participate in **sprint planning** and **backlog sessions**. **Qualifications** * Bachelor’s degree in Computer Science, Software Engineering, or related field, with **7\+ years** of experience in backend development with **NodeJS** * Strong experience in designing and developing scalable backend systems, including direct experience with **MongoDB** and **GCP** or **AWS** and understanding of **cloud\-native**/**serverless** architectures. * In\-depth understanding of different content schemas (structured, semi\-structured, unstructured) and their implications on database design and performance. * Solid foundation in **Identity and Access Management (IAM)** principles, with the ability to implement secure access controls and data protection measures. * Proven ability to architect high\-performance systems that are scalable and reliable. * Excellent problem\-solving skills, with a focus on efficiency and optimization. * Strong communication skills, capable of conveying complex technical ideas to non\-technical stakeholders. * Demonstrated experience in a collaborative development environment, with a track record of successful project delivery. **Preferred:** * Knowledge of **CI/CD practices,** containerization technologies **(Docker, Kubernetes**), and microservices architecture. * A proactive attitude towards challenges and a passion for learning and applying new technologies. * Join us to be at the forefront of technological innovation, shaping the future of our platform and making a significant impact in our field. **The pay range for this role is:** 55,000 \- 65,000 EUR per year(Hybrid (Lisboa, Lisboa, PT)) 55,000 \- 65,000 EUR per year(Hybrid (Porto, Porto, PT))