Senior Frontend Engineer

Senior Frontend Engineer

Posting Start Date: 8/27/25

Job Location (Short): Belo Horizonte, BRA, | Recife, BRA,

Requisition ID: 33935

Onsite or Remote: Hybrid Position

Shape the Future of Mining with Komatsu Mining Technology Solutions: At Komatsu Mining Technology Solutions, we're not just talking about progress and innovation - we're making it happen. Our cutting-edge Modular brand solutions are powering mines worldwide, driving efficiency and sustainability in ways that seemed impossible just years ago.

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The Company

Komatsu is an indispensable partner to the construction, mining, and industrial machinery markets, maximizing value for customers through innovative solutions. With a diverse line of products supported by our advanced technologies, regional distribution channels, and a global service network, we tap into the power of data and technology to enhance safety and productivity while optimizing performance.

Modular Mining Systems is the global leader in mine management technology and a wholly owned subsidiary of Komatsu Ltd. Our innovative technology powers mine operations in every corner of the globe. The products we cultivate, the solutions we engineer, and the service we deliver set us apart in the mining technology industry. We're more than a company—we're a community of passionate, creative professionals striving toward a shared vision: revolutionizing the way the mining industry operates. With a presence stretching from Johannesburg to Vancouver, Sydney to Lima, you are part of a global brand that supports creativity, fosters innovation, and encourages you to think big, share ideas, and have an impact.

Job Purpose
As a Senior Frontend Engineer on the Mine Platform team, you will develop next-generation user interfaces for our telemetry and observability solutions. You'll collaborate closely with designers, backend developers, and architects to deliver high-quality, responsive, and scalable frontend applications using React and modern microfrontend architectures.
Job Duties and Responsibilities

• Implement pixel-perfect user interfaces from designs using HTML, CSS, and modern JavaScript/TypeScript
• Develop, test, and optimize complex client-side logic in React within a microfrontend environment
• Debug and resolve complex UI performance and integration issues
• Collaborate effectively with product designers using design workflow tools like Zeplin, Figma, or InVision
• Work closely with backend engineers developing IoT, telemetry, observability, and cloud-native services
• Provide technical leadership in frontend architecture, reusable component development, and best practices.
• Mentor junior and mid-level developers and review code contributions from internal teams and contractors.
• Contribute proactively to frontend engineering practices, performance optimization, and tooling improvements.
• Represent the frontend team in cross-functional meetings with stakeholders, including product management, documentation, customer support, and DevOps.

Required Skills
· Bachelor's degree in Computer Science or equivalent practical experience.
· 6+ years of professional experience developing responsive web applications.
· Deep expertise in HTML5, CSS3, and modern JavaScript/TypeScript.
· Proven professional experience building scalable frontend applications using React, including microfrontend architecture.
· Experience with automated UI testing frameworks such as Cypress or Selenium.
· Practical experience with observability tools and telemetry data visualization (e.g., Grafana, Prometheus, or similar).
· Strong debugging skills, attention to detail, and commitment to high-quality code.
· Excellent verbal and written English communication skills for collaboration with global teams.
· Demonstrated ability to work effectively in Agile environments.
Desired Skills
· Knowledge of data visualization tools and frameworks (e.g., , Plotly, ).
· Exposure to GIS or mapping libraries (e.g., OpenLayers, Leaflet) or 3D visualization tools (e.g., , ).
· Full-stack development skills or familiarity with backend systems (Java, C#, ).
· Understanding of DevOps principles, CI/CD pipelines, and cloud environments (AWS, Azure, or GCP).
· Awareness of UX principles and user-centered design methodologies.
· Familiarity with Machine Learning Operations (MLOps) or Anomaly Detection principles and practices.

Diversity & Inclusion Commitment

At Komatsu we come from diverse backgrounds, with unique perspectives, experiences, and contributions. We are committed to creating a workforce that is reflective of the communities we work and live in. We believe that our people are part of our shared purpose. We are authentic, ambitious, and innovative in our pursuit of Diversity & Inclusion. United, we are on a journey towards a sustainable future that creates value together.

If you want to learn more about Komatsu, please visit our website at .

Company Information

Komatsu is a world leader in manufacturing construction, mining, forestry, and industrial heavy equipment. Founded in 1921, Komatsu has a long history of quality, reliability, innovation, and excellence. Headquartered in Tokyo, Japan, Komatsu facilities, distributors and dealers are in more than 140 countries and employ more than 60,000 people. Komatsu offers a diverse and challenging work environment, where you can grow your skills and career, and contribute to a sustainable, clean-energy future. If you are looking for a company that values your talent and potential, be a part of something big and join a team that is shaping the world

EEO Statement

Komatsu is an Equal Opportunity Workplace and an Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or protected veteran status.

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