Frontend Engineer
Arcesium LLC5 hours ago
Lisbon, PortugalMid Level / Senior
Responsibilities
- Build high-performance, data-dense UIs with virtualized grids, advanced column management, real-time status views, and complex financial workflows.
- Develop the Node.js/TypeScript Backend-for-Frontend layer to orchestrate, stitch, and transform data from backend services.
- Build and maintain reusable components in the MUI-based Arc Design System.
- Collaborate with product, design, backend, and non-technical stakeholders on usability, accessibility, experience quality, and API contracts.
- Contribute to AI-assisted development workflows, legacy application migration tooling, and agent interactions embedded in the UI.
Requirements
- Bachelor’s degree in engineering and 2–5 years of experience in the IT industry.
- At least two years of hands-on web development experience with HTML5, JavaScript, TypeScript, React, and CSS.
- Strong knowledge of JavaScript fundamentals and TypeScript features including generics and strict typing.
- Understanding of BFF architecture, component decomposition, state management such as MobX, and web performance optimization.
- Practical experience building and optimizing data grids with virtualization, lazy loading, column configuration, and large-scale filtering.
- Experience with Material UI and design-system principles, including accessible and consistent UI component development.
- Node.js/Express experience for server-side rendering or BFF development is preferred.
- Comfort with AI-assisted development tools, LLM-based coding, and prompt engineering for UI scaffolding is a plus.
Tech Stack
Categories
About Arcesium LLC
Arcesium builds cloud-native software and data platforms for investment managers, hedge funds, private markets, and sell-side firms, spanning front-to-back operations, data warehousing, reconciliation, treasury, and middle-/back-office services. The company operates a SaaS and managed-services model. Founded in 2015 and headquartered in New York City, Arcesium originated from technology developed at the D. E. Shaw group and launched with Blackstone; J.P. Morgan later made a strategic investment.