#133115 - Senior Full-Stack Engineer - Data-Driven Workflow Applications

We are seeking a Senior Full-Stack Engineer to architect and build production web applications that connect data-backed services with intuitive frontend interfaces. The work will enable self-service operational processes, workflow automation, system integrations, and reliable data movement. As an early core engineer, this person will establish software foundations, deliver end-to-end solutions, and help raise engineering standards. Key Responsibilities • Architect and build full-stack applications for data-driven operational workflows. • Develop backend APIs, microservices, workflow orchestration, automated triggers, and system synchronization. • Build production frontend experiences with React and TypeScript. • Establish architecture patterns, coding standards, and maintainable engineering practices as an early core team member. • Lead code reviews, guide peers, and contribute directly to hands-on implementation. • Diagnose reliability and performance issues across applications, services, integrations, and datastores. • Deliver measurable improvements to product capability, operational efficiency, or system quality. Must-Have Skills • 5+ years of hands-on software development using Java or Python. • 5+ years building backend services, APIs, or other data-driven applications. • 5+ years working with datastores such as MySQL, PostgreSQL, MongoDB, or comparable technologies. • 4+ years building production applications with both React and TypeScript. • Strong HTML, CSS, and modern JavaScript (ES6+) skills. • Experience with REST or GraphQL APIs, RPC-style communication, and JSON-based integrations. • Production cloud experience with a strong focus on AWS. • Experience leading code reviews and improving software quality. • Evidence of tangible impact from personally delivered engineering work. • A technical bachelor's degree. • Ability to operate as an early core engineer by shaping architecture, establishing coding standards, and guiding peers while remaining hands-on. Nice-to-Have Skills • Billing-system experience. • Service-oriented or event-driven architecture experience. • Frontend GraphQL experience, including Apollo or comparable tooling. • Experience with Kafka, Amazon SQS, RabbitMQ, or comparable messaging systems. • Design-system or reusable component-library experience. • Jest and React Testing Library experience. • Webpack or Vite experience. • Web accessibility experience, including WCAG. • Strong production debugging and troubleshooting experience. • Experience with large-scale or high-performance systems, including consistency, scalability, replication, or redundancy concerns. • Enterprise experience strongly preferred. Required Tools and Platforms • Java or Python. • React and TypeScript. • HTML, CSS, and modern JavaScript. • REST or GraphQL, RPC, and JSON. • AWS. • MySQL, PostgreSQL, MongoDB, or comparable datastores. Location Time and Engagement • Candidates must be based in LATAM. • Full US Central Time coverage is required. • This is a contract engagement at 40 hours per week. • The anticipated engagement runs through March 31, 2027. • This is not currently a contract-to-hire opportunity. Originally posted on Himalayas