#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.