Summary: Seeking a Senior Full Stack Engineer to design, develop, and enhance critical technology platforms supporting financial transactions and operations, leading refactoring efforts. Highlights: 1. Build and maintain full-stack applications using Python, React, and FastAPI 2. Design and optimize system architecture with microservices and APIs 3. Lead refactoring initiatives on critical financial systems We are seeking a skilled **Senior Full Stack Engineer** to design, develop, and enhance critical technology platforms supporting financial transactions and operations. This role involves building scalable applications, ensuring compliance and reliability, and leading refactoring efforts for high\-stakes systems to meet the demands of a dynamic environment. **Responsibilities** * Build and maintain full\-stack applications using Python, React, and FastAPI * Design and optimize system architecture using microservices, database models, and APIs * Ensure compliance, security, and auditability in financial technology platforms * Develop and execute robust unit tests and manual integration tests * Collaborate across global teams, contributing to code reviews and improving workflows * Redesign and refactor critical software systems to improve stability and scalability * Utilize AWS services, including S3, Lambda, AWS AKS, and CloudWatch, for application infrastructure * Manage, query, and model data using PostgreSQL and SQL with a focus on analytical insights * Leverage Docker for containerized development and deployment * Document workflows and processes using collaboration tools such as Jira and Confluence * Support the integration of payment infrastructure such as SWIFT, ACH, and account management systems **Requirements** * 3\+ years of professional experience with Python, FastAPI, and React * Expertise in PostgreSQL, SQL, and basic data analysis * Proficiency in TypeScript for robust client\-side and server\-side application development * Skills in Docker for development and deployment workflows * Proficiency in AWS services such as S3, Lambda, AWS AKS, and CloudWatch * Understanding of system design with a focus on microservices, database modeling, and APIs * Strong commitment to ensuring quality through test automation, including unit and integration tests * Familiarity with Atlassian tools like Jira and Confluence * Experience leading refactoring/redesign initiatives on critical financial systems * Experience working in agile teams to deliver complex applications * Flexibility to collaborate with distributed teams across multiple time zones * Ability to design systems with resiliency, compliance, and auditability in Treasury/payment platforms * Fluency in English, both written and spoken, at a minimum B2 level **Nice to have** Knowledge of GitHub Actions, Jira* GitHub integrations, and DevOps practices * Familiarity with financial technologies such as SWIFT, ACH, and Treasury system integrations * Prior exposure to financial services or Treasury operations, with domain knowledge in payments, wire transfers, account reconciliations, and cash management * Practical experience with Kubernetes for container orchestration and scaling applications efficiently in production environments * Expertise in leveraging AI\-assisted development technologies such as GitHub Copilot and Cursor to enhance developer productivity