Web Front End Developer - Senior / Lead / Architect - Brazil

About Kore GeosystemsKore Geosystems is at the forefront of technology, leveraging AI and advanced software to deliver innovative solutions for the mining industry.

Our products empower geologists and engineers to capture, manage, and analyze geological data faster and more accurately.

With leadership experience from companies like Microsoft, our team combines deep technical expertise with a vision to transform how data powers mining operations.The OpportunityWe're seeking ahands-on Web Front-End Architectto lead Kore's efforts in modern web application development.

You'll define and implement the front-end architecture for our next-generation platforms usingReactJS, TypeScript, Hooks, and Context API —while coding day-to-day.

This role requires deep technical ownership, architectural thinking, and the ability to work across multiple complex applications that integrate data visualization, analytics, and AI features.Key ResponsibilitiesLead and own thefront-end architectureand design of scalable, high-performance web applications.

Develop and maintain applications usingReactJS, TypeScript, Hooks, Context API , andRedux / Fluxpatterns.

Designresponsive, modular, and reusable UI componentsusing frameworks likeMaterial UI ,Bootstrap , orTailwind .

Work closely with backend and DevOps teams to ensureseamless CI / CD integration(preferably onAzure DevOps ).

Implement secure front-end integrations withAzure AD B2Cor equivalent identity systems.

UseSVGandD3.jsfor advanced data visualizations (annotations, charting, and reporting).

Collaborate with product, design, and data teams to translate complex requirements into intuitive, performant UI solutions.

Ensure accessibility, cross-browser compatibility, and responsive design standards.

Drive front-end code quality, best practices, and technical mentorship within the team.Required Skills & Experience15+ yearsof professional experience in front-end or full-stack web development.

Expert-level proficiencyin :

ReactJS ,TypeScript ,Context API ,Hooks , andRedux / Flux patterns

HTML5, CSS3, and modern JavaScript (ES6+)

Solid understanding ofNode.js conceptsand front-end build pipelines.

Strong experience withresponsive design frameworks(React Material, Bootstrap, Tailwind).

Hands-on experience withSVGandD3.jsfor visualizations.

Experience withCI / CD pipelines(Azure DevOps preferred).

Familiarity withsecurity best practices ,OAuth2 , andAzure B2Cauthentication.

Strong debugging, optimization, and performance tuning skills.

100% hands-on coding; ability to set architectural standards and lead by example.Preferred TechnologiesReact Material Design

SVG / D3.jsfor data-driven UI

Azure DevOps CI / CD pipelines

Azure B2Cfor authentication and user management

React Router ,Functional Components , andReact HooksWho You AreAtechnical leaderwho enjoys hands-on coding and architectural problem-solving.

Passionate about creating elegant, maintainable, and scalable UI systems.

Curious about data visualization, real-time apps, and next-gen UI technologies.

Comfortable collaborating with cross-functional, global teams.BenefitsHealth insurance for employee and family.

Two weeks of vacation + one week of sick leave annually.

Work-from-anywhere flexibility (Brazil only).

Annual performance bonus and salary revision.Equal OpportunityKore Geosystems is an equal opportunity employer.

We celebrate diversity and are committed to creating an inclusive environment for all employees.