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front, back & full stack

Senior UI Developer

We are seeking an experienced UI Developer to design and develop modern, scalable, and high-performance front-end applications. In this role, you will work across React.js, Next.js, and Node.js, collaborating closely with Product, UX, and Backend teams to deliver robust, well-architected solutions that meet both business and user needs. Opportunity for Latin American residents only.

schedule

Full Time

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Work Contract

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What you'll do

Key Responsibilities

  • Develop advanced UI features using React.js and Next.js
  • Build reusable, scalable, and maintainable UI components following best practices
  • Translate complex UX designs and business requirements into clean, responsive, and user-friendly interfaces
  • Integrate the UI layer with backend services and APIs
  • Optimize application performance, accessibility (WCAG compliance), SEO, and cross-browser compatibility
  • Conduct code reviews, ensuring code quality and adherence to standards
  • Collaborate with cross-functional teams to continuously improve UI/UX
  • Use Node.js for backend integration, tooling, and server-side logic when needed
  • Troubleshoot production issues, identify root causes, and implement efficient fixes
  • Mentor junior developers, providing technical guidance and promoting best practices within the team

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Requirements

- 8+ years of professional experience in UI/front-end development.

- Expert-level proficiency in

o JavaScript (ES6+)

o React.js

o Next.js

o Node.js

o HTML5

o CSS3

- Strong hands-on understanding of React.js, including hooks/functional components,

and state management, such as Redux or similar.

- Experience using RESTful API’s.

- Solid understanding of CI/CD pipelines, Git, and modern front-end build tools.

- Strong problem-solving skills and the ability to contribute to technical discussions.

- Excellent communication and collaboration skills.

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Nice-to-Have

- Experience with CSS-in-javascript, such as styled-components.

- Experience with SSR concepts.

- Knowledge of headless CMS integrations

- Familiarity with UI test frameworks (Jest, React Testing Library, Cypress).

- Familiarity with Cloud services, such as Azure and GCP.

- Familiarity with GraphQL.

- Understanding of micro-frontend architecture and design patterns.

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Other information

- 100% remote job.

- Flexible work environment.

- Periodic feedback focused on professional development.

- Competitive salary.

- Opportunity for international exposure.

- Opportunity for Latin American residents only.

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apply for position

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Mid Full Stack Developer

We are seeking an experienced Mid Full Stack Developer to build and evolve modern, scalable, and high-performance web applications. In this role, you will work primarily with React and TypeScript on the frontend, while also contributing to backend development using Node.js (Express/Fastify/NestJS) and Java APIs built with Spring Boot. You will collaborate closely with Product, UX, and Backend teams, taking ownership of end-to-end features and delivering well-architected solutions that balance user experience, performance, and maintainability. This opportunity is open to Latin American residents only.

Senior Backend Java Developer

We are looking for a Senior Backend Developer to join a global-scale technology team supporting high-traffic retail and eCommerce platforms used by millions of customers worldwide. In this role, you will design, build, and maintain robust backend services using Java and Spring Boot, contributing to a modern microservices architecture deployed in the cloud. You will collaborate closely with product, architecture, and engineering teams to deliver scalable, resilient, and high-quality solutions, ensuring performance, reliability, and seamless integration across distributed systems.

Questions about joining our team?

remote/office work

We are a fully remote company, but we value in-person connections. We host annual trips for the entire team to collaborate and bond, and some teams organize additional meetups throughout the year to work together.

what does "flexible work" mean at KIS?

You can choose your work hours, as long as you meet your team and client's main meetings, cerimonies and deliveries. Apart from those ceremonies, you can choose how to distribute the remaining hours of your day. Just make sure you're communicating frequently and clearly.

how we keep our teams together

We have performance plans, feedback and follow-up sessions, social gatherings (online and offline) and laid-back events to keep the teams engaged and united.

how does our contract work?

Our contracts are based on Legal Person agreements (PJ in Brazil). Let us know if you need help explaining this contract model.

couldn’t find all the answers you need?

Contact our team and learn more about careers at KIS.

get in touch

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