Senior Frontend Developer

Overview

We are looking for a Frontend Engineer to join a small, highly autonomous engineering organisation working on digital asset infrastructure. The company provides secure access to enterprise blockchain and cryptographic infrastructure, including multi-party computation (MPC).

The team is strengthening its frontend engineering capabilities while accelerating the adoption of robust agentic and AI-assisted development practices.

In this role, you will take significant ownership of frontend delivery, architecture and engineering standards across multiple products. One of the major current initiatives involves integrating a digital-asset platform with a US bank, including tokenised-dollar functionality and embedding product capabilities within the bank's existing experience.

About the Environment:

• The frontend estate includes existing React / Next.js applications and a newer TanStack Start implementation.
• Technology is organised into two small teams. There is one other frontend developer who will benefit from technical guidance and mentoring.
• QA support includes test automation, manual QA and access to an external QA provider for larger testing exercises. Developers are expected to test their own work before final QA.
• DevOps and pipeline responsibilities are supported by a backend engineer who

also performs DevOps work.

• The organisation is at the beginning of a broader shift towards agentic development. Engineers already use tools such as Claude and Codex, with increased investment planned in AI development credits and workflows.

Responsibilities:
Frontend Engineering

• Deliver senior-level frontend features across the company's product estate.
• Develop scalable, maintainable interfaces using TypeScript, React and Next.js.
• Shape solutions from high-level or partially defined requirements, rather than relying on fully specified tickets.
• Contribute to frontend architecture and technical design decisions.

Agentic / AI-Assisted Engineering

• Help establish mature agentic / AI-assisted development patterns and appropriate engineering controls.
• Use AI tools to accelerate delivery without compromising code quality, maintainability, security or testing standards.
• Introduce practical checks and balances as AI-assisted development increases across frontend and backend teams.

Quality, Testing & Security

• Test own code thoroughly, including unit/component and end-to-end testing.
• Work collaboratively with QA through release and support robust engineering standards.
• Proactively identify Web3 and application-security edge cases, including user-facing risks specific to digital-asset products.

Technical Leadership & Product Judgement

• Provide technical guidance and mentoring to the Cayman-based frontend engineer without formal line-management responsibility.
• Operate with a product mindset and make sensible delivery decisions where requirements are incomplete.
• Research unfamiliar product or Web3 topics independently and propose pragmatic solutions to ambiguous challenges.

Requirements:
Essential Technical Experience

• Strong commercial frontend engineering experience, operating at Senior/Expert level.
• Expert TypeScript / JavaScript and React.
• Strong Next.js experience and deep understanding of modern frontend architecture.
• Demonstrable experience with agentic / AI-assisted software-development practices beyond basic code generation or "vibe coding".
• Automated testing experience using Playwright for E2E and Jest, Vitest or equivalent for unit/component testing.
• GitHub / GitHub Actions and modern CI/CD workflows.
• Security-conscious engineering approach, particularly for sensitive or regulated applications.

Strongly Preferred/Desirable Technical Experience

• Web3 / blockchain experience or strong working knowledge of core concepts and security considerations.
• FinTech or broader financial-services product experience.
• Vercel deployment experience.
• TanStack Start exposure.
• AWS and/or experience working in containerised, cloud-agnostic environments.
• Experience in regulated or SOC 2-aligned engineering environments.

Market Experience

• Web3 / blockchain experience is strongly preferred, but not an absolute requirement where a candidate demonstrates strong technical curiosity and the ability to learn the domain rapidly.
• FinTech / financial-services experience is a strong alternative or complementary background.
• Experience working in small, fast-moving product organisations where engineers operate with significant autonomy is highly relevant.

Assessment Process
Stage 1: CV screening.
Stage 2: First-stage technical interview (30 mins).
Stage 3: Technical Interview (1 hour) including pair-programming.
Stage 4: Cultural alignment review (30 mins).