Senior Software Engineer II

About the role

Seismic's Front-End Architecture team seeks a Senior Software Engineer II to scale and evolve the company's front-end platform, focusing on software quality, developer experience, and operational excellence. You will work closely with product leads, engineering leads, designers, and the team to maintain the Mantle component library, establish front-end standards, and build shared infrastructure for a consistent, accessible, and performant user experience across the platform. This role is based in Hyderabad, IN and is Remote.

What you’ll do

• Develop, improve, and maintain the Mantle component library, ensuring seamless integration and adoption across the Seismic platform.
• Diagnose and resolve complex front-end issues including Content Security Policy (CSP) violations, accessibility (a11y) defects, cross-browser rendering problems, and performance regressions to ensure
• Leverage LLM-powered tooling and AI-assisted workflows to accelerate front-end development, improve code quality, and explore innovative approaches to UI generation and component authoring.
• Be a major player on the Front-End Architecture team, driving technical and architectural decisions for shared UI infrastructure and collaborating across multiple remote teams.
• Collaborate with globally-dispersed product managers, designers, and software engineers to define, build, and ship front-end components and patterns that create innovative solutions and add value to o
• Explore emerging front-end technologies, web platform capabilities, and LLM-powered development tools, and bring your findings to life in our products and developer workflows.
• Participate in and contribute towards code reviews, bug/issue triage, and documentation.
• Contribute to troubleshooting CSP configurations, accessibility compliance, performance bottlenecks, and continuous quality improvements across the front-end platform.

What you’ll bring

• BS or MS in Computer Science, a related technical field, or equivalent practical experience.
• Minimum of 8 years of Software Development experience within a SaaS business.
• Expert-level proficiency in HTML, CSS, and JavaScript, with deep experience building production applications in React and TypeScript.
• Strong proven record with user interface, interaction, and accessibility (WCAG) best practices, including hands-on experience auditing and remediating a11y issues.
• Experience with designing for security (including Content Security Policy), performance optimization, internationalization/localization, and accessibility.
• Familiarity with modern front-end build tooling and CI/CD pipelines.
• Experience using LLM-powered development tools to enhance productivity and code quality.
• Deep experience across multiple software projects, driving the end-to-end development lifecycle of architecturally complex UI systems, component libraries, or design system implementations.

Skills

Education

BS or MS in Computer Science, a related technical field, or equivalent practical experience.