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

Lifted (an Upwork Company) · Colombia · posted today ago

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About this role

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.