Full stack engineer - React, Kotlin, Python - Remote

xebiacee; United States; Remote; USD 140,000 - 190,000; Full time

Job summary

xebiacee is seeking a senior full-stack engineer to build and maintain web applications spanning backend services and modern frontends.

You will switch between Kotlin, Python and React, contribute to APIs, cloud delivery, testing, and production support within an Agile team. Must work from within the European Union with valid work authorization. Excellent communication in English required.

Qualifications

• Senior full-stack engineer with a modern web stack and strong backend skills.
• Proficient in Kotlin, Python, React, and modern JavaScript/TypeScript.
• Experience with REST APIs, microservices, and API integrations.
• Strong HTML/CSS with responsive design and accessibility.
• Familiar with automated testing, code review, CI/CD, cloud infra and monitoring.

Responsibilities

• Build and maintain backend services, APIs, and integrations with Kotlin and Python.
• Develop SPAs using React and modern JavaScript/TypeScript.
• Create responsive, accessible UIs with HTML/CSS across browsers.
• Apply solid data modeling and design principles with code reviews and tests.
• Support cloud infrastructure, CI/CD, monitoring, and production troubleshooting.
• Collaborate with product and UX in an Agile Scrum/Kanban setup.

Skills

Kotlin

Python

React

JavaScript/TypeScript

REST APIs

CI/CD

Testing

English (B2)

Tools

Docker

GitLab CI

Cloud platforms

UX/UI knowledge

Job description

Role overview

Develop and maintain full-stack web applications across backend services and user-facing interfaces. The work calls for a senior engineer comfortable moving between Kotlin, Python, and a modern React frontend, contributing to APIs, integrations, cloud delivery, and production support. You will collaborate with product, UX, and engineering colleagues in an Agile team.

Responsibilities

• Build and maintain backend services, APIs, and integrations, with work across Kotlin and Python.
• Develop single-page web applications with React and modern JavaScript or TypeScript.
• Create responsive, accessible interfaces that work across browsers, using HTML and CSS.
• Apply sound data modeling and software design principles while contributing to reviews and automated testing.
• Support cloud infrastructure and infrastructure-as-code workflows, CI/CD, monitoring, and production troubleshooting.
• Collaborate with product and UX partners, adapt across frontend and backend tasks, and contribute within Scrum or Kanban processes.

Requirements

• Senior full-stack engineering experience with a modern web stack and strong backend development skills, preferably on the JVM.
• Practical knowledge of Kotlin, Python, React, and modern JavaScript; willingness to work across the stack.
• Experience with REST APIs, JSON, microservices, and API integrations.
• Strong HTML and CSS skills, including responsive design, accessibility, cross-browser compatibility.
• Familiarity with automated testing, code review, CI/CD, cloud infrastructure, and production logging or monitoring.
• English proficiency at B2 level or higher, with the ability to work independently and communicate across teams.
• Must work from within the European Union and hold a valid work permit.

Nice to have

• Docker, GitLab CI, cloud platform experience, UX/UI knowledge, responsive web design, or integrations with external partner systems.