Frontend Developer

Company Description KapitalFusion is a financial technology and quantitative advisory firm that connects advanced mathematical modeling with modern capital markets. The company focuses on quantitative finance, using tools such as regime-switching jump-diffusion models and stochastic processes to analyze markets and price complex assets. It builds innovative blockchain and decentralized finance solutions, with a strong emphasis on the XRP Ledger and tokenized debt architectures. KapitalFusion also develops institutional-grade risk analytics platforms and APIs, such as PulseRisk, to support decision-making in volatile digital asset and traditional markets. Team members work at the intersection of math, finance, and technology to drive new forms of financial innovation.

Role Description The Frontend Developer will design, implement, and maintain user-facing interfaces for KapitalFusion’s financial and risk analytics platforms. Day-to-day responsibilities include building responsive web applications, collaborating with quantitative engineers and backend developers to integrate APIs, and translating complex data and models into intuitive dashboards and workflows. The role involves optimizing performance, ensuring cross-browser and cross-device compatibility, and contributing to UI/UX improvements for analytics terminals and blockchain applications. The Frontend Developer will participate in code reviews, maintain documentation, and support continuous improvement of the web development stack. This is a full-time, on-site role based in Stockholm.

Qualifications

• Candidates should possess strong Front-End Development skills, including modern JavaScript frameworks (e.g., React, Vue, or Angular), HTML5, and CSS3.
• Candidates should possess Web Development and Responsive Web Design skills to build accessible, performant interfaces across devices and browsers.
• Candidates should possess Software Development experience, including clean coding practices, version control (Git), testing, and debugging.
• Candidates should possess a basic understanding of Back-End Web Development concepts to effectively collaborate on API integration and data flows.
• Relevant qualifications include experience with data visualization libraries (e.g., D3.js, Chart.js), RESTful and WebSocket APIs, and working with complex financial or analytics tools.
• A bachelor’s degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience, is beneficial.
• Strong problem-solving skills, attention to detail, and the ability to work closely with quantitative and product teams in an on-site environment in Stockholm are expected.
• Experience or interest in fintech, quantitative finance, or blockchain technologies is a plus.