Senior Frontend Engineer

radiantsecurity· Engineering
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📍 São Paulo, Brazil

About this role

About us

Radiant Security is building the most advanced AI SOC platform, featuring unbounded alert triage, investigation, and response for security teams at scale. Our platform ingests alerts from across an organization's entire security stack (SIEM, EDR, identity, cloud) and uses AI to triage, investigate, and surface what actually matters. We're replacing alert fatigue with clear signal, so analysts can focus on real threats.

We're a small, fast-moving team. We ship continuously, stay close to customers, and hold ourselves to a high standard. Our product touches the daily workflows of security teams, and decisions we make have a direct impact on how quickly threats get resolved.

Join us and boost your career with hands-on AI experience.

This is a hybrid position in Brazil  and we are attending the office 3 times a week, which  is located in Vila Olimpia, São Paulo.

The Role

We are looking for an experienced Frontend Engineer with expertise in TypeScript, CSS and modern  UI frameworks  to help us build our user interfaces. The ideal candidate is passionate about designing exceptional user experiences and is capable of working closely with product, design and backend teams to deliver seamless web applications.

What you'll do

  • Develop web-based user interfaces  in  TypeScript, React, Next.js and Tailwind CSS.
  • Collaborate with the product and  design teams to ship user-friendly, aesthetically pleasing interfaces.
  • Work closely with cross-functional teams to ensure consistency and alignment with backend and product requirements.

Things we’re looking for

  • Bachelor's Degree
  • 5+ years of experience in frontend development with multiple UI frameworks.
  • Proven track record of delivering  visually appealing and intuitive user interfaces.
  • Expertise in Typescript, CSS and Web Platform Standards overall.
  • Experience working with  Design Systems  in Figma.
  • Experience creating and maintaining UI Component libraries used across multiple teams.
  • Strong understanding of Web Vitals and other  performance metrics.
  • Strong understanding of  frontend testing frameworks and tools (e.g., Jest, Cypress, Playwright).
  • Excellent communication and collaboration skills
  • Strong English Skills

Benefits

  • Health Insurance (Safety Wing)
  • Stay Healthy subsidy (for gym and sports)
  • Unlimited PTO (enjoy the holidays of your location)
  • Parental leave
  • Stock Options

Frequently Asked Questions

Is the salary disclosed for the Senior Frontend Engineer position at radiantsecurity?
The salary for this Senior Frontend Engineer role at radiantsecurity is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Senior Frontend Engineer position at radiantsecurity located?
This Senior Frontend Engineer role at radiantsecurity is based in São Paulo, Brazil. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Which team or department does the Senior Frontend Engineer at radiantsecurity belong to?
This Senior Frontend Engineer position is part of the Engineering department at radiantsecurity. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Senior Frontend Engineer position at radiantsecurity?
Click the "Apply Now" button on this page. You will be redirected to radiantsecurity's official application portal hosted on greenhouse where you can submit your application directly.
When was the Senior Frontend Engineer job at radiantsecurity posted?
This Senior Frontend Engineer position at radiantsecurity was posted on Feb 13, 2026. Apply as soon as possible — early applications are often reviewed first.
Senior Frontend Engineer
radiantsecurity
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You'll be redirected to radiantsecurity's official application page on Greenhouse.