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Open nowPosted 9 days ago

Frontend Engineer

Arcesium LLC49 open roles

Where
Lisbon, Portugal
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Your applicationOpen nowFrontend EngineerArcesium LLC · Lisbon, Portugal

  1. YouYes, apply to this one.

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The clock on this job

Early applications get read.

7.7% of postings close within 7 days. Measured by our own scanner across the market. Arcesium LLC postings stay open a median of 21 days.

Share of postings closed within
  1. 1.6%1 day
  2. 3.3%3 days
  3. 7.7%7 days
  4. 14.0%14 days
  5. 33.7%30 days
This job: posted 9 days ago

Arcesium LLC median: 21 days open

The posting

Company Overview

Arcesium is a global financial technology firm that solves complex data-driven challenges faced by some of the world’s most sophisticated financial institutions. We constantly innovate our platform and capabilities to meet tomorrow’s challenges, anticipate the risks our clients encounter, and design advanced solutions to help our clients achieve transformational business outcomes.

Financial technology is a high-growth industry as change and innovation continue to disrupt the status-quo and prompt major transformation. Arcesium is at a particularly interesting time in our own growth as we look to leverage our successfully established market position and expand operations in pursuit of strategic new business opportunities. We value intellectual curiosity, proactive ownership, and collaboration with colleagues, and we empower you to meaningfully contribute from day one and accelerate your professional development.

We are looking for bright and exceptional software engineers to join our technology team. You will build next-generation software used by some of the most sophisticated alternative asset managers, and play a central role in Arcesium's platform experience

What You'll Do:

  • Build high-performance, data-dense UIs featuring virtualized grids, advanced column management, real-time status views, and complex multi-step financial workflows
  • Work with Product Managers and Designers to drive the Modern UI rollout in delivering parity with legacy screens while meaningfully improving usability, navigation, and accessibility
  • Architect and develop the Backend for Frontend (BFF) layer using Node.js/TypeScript to orchestrate, stitch, and transform data from multiple backend services for efficient UI consumption
  • Build and maintain reusable components in the Arc Design System (MUI-based), ensuring consistency across opt-in/opt-out flows, column customizers, filter panels, and shared UI patterns
  • Collaborate with backend teams to define and close API contracts, and work with non-technical stakeholders to review and validate usability and experience quality
  • Contribute to AI-assisted development workflows, including prompt-driven component scaffolding, AI-powered legacy app migration tooling, and embedding agent interactions into UI

What You'll Need:

  • A bachelor's degree in engineering with 2-5 years of experience in the IT industry
  • 2+ years of hands-on web development with HTML5, JavaScript, TypeScript, React, CSS, and TDD practices
  • Strong command of core JavaScript (closures, event loop, prototype chain, async/await) and TypeScript (generics, strict typing)
  • Solid understanding of architectural principles including BFF patterns, component decomposition, state management (MobX or equivalent), and web performance optimization
  • Practical experience building and optimizing data grids, including virtualization, lazy loading, column configuration, and filtering at scale
  • Experience with Material UI (MUI) and design system principles; ability to build accessible, consistent UI components aligned to a shared design language
  • Experience with Node.js/Express for server-side rendering or BFF development is preferred
  • Curiosity and comfort working with AI-assisted development tools (LLM-based coding, prompt engineering for UI scaffolding) is a huge plus

Recruiting Security Emails from genuine Arcesium recruiters who are employees of the company will always come from the @arcesium.com domain. In some cases, you may also be contacted by independent search firms engaged to recruit on our behalf; emails from their employees should always come from their firm's applicable domain. We'll never ask for your banking information or any payment as part of the recruiting process. If something seems off or you're contacted by an unexpected third party, please reach out to us at [email protected] (US/UK), [email protected] (India) or [email protected] (Portugal/Sweden).

Arcesium is an equal opportunity employer.

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