Sr. Frontend Engineer

Location:

On-site (Bangalore) Experience:

5 to 7 years Function:

Engineering Reports To:

Head of Engineering

About Lucio: Lawyers spend too much time buried in documents and tools that weren’t built for them. At Lucio, we believe lawyers deserve better. We’re building the AI-native workspace for lawyers: making AI-led intelligence work in the same spaces as lawyers already do. From drafting and research to review and compliance, Lucio prides itself on its adoption-first philosophy, and enables practice transformation for legal teams without compromising security or integrity.

Founded in 2022 by cross-border lawyers, Lucio now serves 3,500+ users across 9 jurisdictions, trusted by leading firms, and backed by Microsoft, Google, and $5M in funding. With 350% YoY growth and a team of 50+, we’re scaling fast to redefine how law gets practiced in the age of AI.

Note on Our Team: We are a diverse young mix of professionals from across the country. We bring together diverse perspectives and experience of legal practice and technology. In a nutshell, we aim to make lawyer’s lives easier and fundamentally transform workflows in the legal industry. We encourage a positive work environment, ownership, individual growth and initiative.

About the Role: We’re hiring a Senior Frontend Engineer to build intuitive, high-quality user experiences for Lucio’s AI-native legal platform. This role focuses on translating complex AI-driven workflows into clean, reliable, and usable interfaces that legal professionals can trust and adopt easily. You’ll work closely with product managers, backend engineers, and designers to build scalable frontend systems, reusable components, and thoughtful user interactions. The role is hands-on and ownership-driven, with direct impact on how users interact with Lucio’s core features every day.

Key Responsibilities: ● Design and build scalable, high-quality frontend applications using React and modern JavaScript (ES6+). ● Develop reusable UI components and contribute to a consistent design system. ● Implement efficient client-side and server-side state management for data-heavy workflows. ● Build robust forms and validation flows for complex user inputs. ● Optimize frontend performance through techniques such as code splitting, lazy loading, memoization, and efficient rendering. ● Collaborate closely with backend, product, and design teams to deliver cohesive features end-to-end. ● Ensure cross-browser compatibility, responsiveness, and accessibility best practices. ● Write clean, maintainable, and well-documented code. ● Participate in code reviews and contribute to frontend architecture decisions. ● Debug and resolve production UI issues with a focus on user experience.

Requirements: ● 5+ years of experience building frontend applications in production environments. ● Strong proficiency in JavaScript (ES6+) with a solid grasp of asynchronous programming. ● Extensive experience with React, including hooks, component lifecycle, routing, and complex UI composition. ● Experience working with UI component libraries or design systems (MUI preferred; AntD, Chakra, or Mantine acceptable). ● Practical experience with client-side state management (Redux Toolkit, Zustand, or similar). ● Experience with server-side state management or data fetching libraries (React Query / TanStack Query, SWR, or RTK Query). ● Hands-on experience building complex forms and validation flows (react-hook-form preferred; zod or yup). ● Strong understanding of CSS3, responsive design, and modern layout techniques (Flexbox, Grid). ● Proven ability to identify and implement frontend performance optimizations. ● Familiarity with frameworks like Next.js or Remix, including SSR/SSG concepts. ● Exposure to utility-first styling approaches such as Tailwind CSS. ● Working knowledge of Git and collaborative development workflows. ● Understanding of web fundamentals such as HTTP, REST APIs, and browser developer tools. ● Familiarity with modern build tools like Vite, Webpack, or Parcel. ● Awareness of accessibility standards (WCAG) and inclusive frontend practices. ● Ability to work independently in a fast-moving startup environment with high ownership.

Benefits: ● Competitive compensation aligned with experience and ownership. ● Unlimited leaves, including sick leaves, period leaves, and flexible time-off. ● High-autonomy, low-bureaucracy work environment focused on trust and outcomes. ● Opportunity to work on real-world AI products used by top law firms. ● Ownership over meaningful parts of the product that ship quickly to production. ● Close collaboration with product, backend, AI, and leadership teams. ● Inclusive, diverse, and innovation-first culture that values learning and experimentation. ● The chance to grow with a company building foundational AI technology for the legal industry.

Why this role matters? This role is critical to shaping how legal professionals experience AI in their daily work. You will build frontend systems that make complex, AI-driven workflows feel intuitive, reliable, and efficient. Your work will directly influence usability, adoption, and overall trust in the product. By owning key frontend components and interactions, you will help define how modern legal software looks, feels, and performs in an AI-first world. If interested, decode this technical challenge - https://workwithus.lucioai.com/