Summary: Seeking a Senior Full-Stack Engineer with Python and ReactJS expertise to develop and optimize mission-critical systems for Treasury and financial operations. Highlights: 1. Spearhead development and optimization of mission-critical systems 2. Take ownership of impactful financial systems 3. Contribute to challenging, high-value projects We are seeking a **Senior Full\-Stack Engineer with expertise in Python and ReactJS** to spearhead the development and optimization of mission\-critical systems. This role involves designing, refactoring, and maintaining high\-performance applications while ensuring stability and scalability for key Treasury and financial operations. This is a unique opportunity to take ownership of impactful financial systems, working with leading technologies and contributing to challenging, high\-value projects. **Responsibilities** * Build and maintain scalable applications using Python, FastAPI, and ReactJS * Design robust microservices architectures, API integrations, and database models * Implement containerized deployments with Docker and Kubernetes on Ubuntu\-based environments * Drive refactoring and redesign initiatives for complex financial systems * Architect systems to ensure resiliency, compliance, and auditability in payments and Treasury operations * Develop and manage comprehensive testing frameworks, including automated unit and integration tests * Collaborate with globally distributed teams to deliver agile project milestones * Foster a culture of quality through code reviews and knowledge sharing * Utilize tools like Jira and Confluence to align project workflows and communication * Maintain strong system uptime through best practices in continuous delivery and monitoring **Requirements** * 3\+ years’ experience with Python, FastAPI, ReactJS, SQL Server, SQL, and Docker * Knowledge of Kubernetes and deploying containerized applications in production environments * Skills in creating and managing Ubuntu\-based application images for deployments * Competency in developing test automation frameworks and managing integration testing * Experience working in agile teams on high\-stakes, complex applications * Familiarity with Atlassian tools, including Jira and Confluence * System design expertise spanning microservices, APIs, and database schemas * Background in leading refactoring efforts or redesigning critical financial systems * Understanding of resiliency, security, and compliance in Treasury/payment workflows * Strong collaborative mindset and ability to work with global cross\-functional teams * English language proficiency at an Upper\-intermediate level (B2\) or higher **Nice to have** Experience with GitHub Actions, integrating Jira* GitHub workflows, and DevOps processes * Prior experience in financial services, particularly within bonds and loans domains * Familiarity with Apache Kafka * Skills in Cursor code editor and GitHub Copilot * Experience with SWIFT Payments