UX/UI Senior Software Engineer

Partner One Capital

Brazil Remote contract

Posted: January 12, 2026

Required Skills

Job Description

Join Fidelis Cybersecurity as a Senior UI/UX Software Engineer, where you will craft elegant and scalable user experiences for our industry-leading cybersecurity platforms. In this role, you will collaborate with an exceptional team of designers, engineers, and cybersecurity experts to transform complex data into clear, actionable insights; helping our customers see, understand, and respond to attacks faster.

At Fidelis, we’re not just defending against threats, we’re outsmarting them. Our technology digs as deep as attackers hide, uncovering threats across networks, endpoints, and cloud environments. As part of our team, you’ll be on the front lines of innovation, shaping how defenders visualize and interact with the most critical security data in the world.

What You’ll Do

• Build and maintain secure, scalable web apps with Angular (12+) and modern web tools.
• Partner with UX/UI designers to deliver intuitive, user-focused interfaces.
• Collaborate with backend teams to integrate APIs and ensure smooth data flow.
• Optimize performance, speed, and scalability across applications.
• Write clean, maintainable, well-documented code.
• Participate in code reviews, testing, and debugging to maintain high quality.
• Stay current with industry trends and Angular best practices.
• Turn business requirements into practical, technical solutions.

Requirements:
• BS in Computer Science, Engineering, or equivalent experience.
• Proficiency in AngularJS / Angular 12+, TypeScript, JavaScript, HTML5, SCSS, and Less.
• Experience with RxJS, NgRx, and reactive frameworks.
• Strong understanding of RESTful APIs, third-party integrations, and SQL.
• Experience with IIS, performance tuning, and optimization (apps & DBs).
• Familiarity with cloud platforms (AWS, Azure, or GCP).
• Excellent problem-solving, attention to detail, and team collaboration.

Preferred: Experience with NoSQL, search engines, Agile development, and containerization (Docker or Podman).

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