Senior Full-stack Web Service Developer

Our diverse team hails from 42 nationalities, with backgrounds ranging from DeFi natives to PhDs. Predominantly remote, we have hubs in London, Brussels, Singapore and Paris, and host regular online and offline hangouts to keep the crew tight.

We are trading on more than 80 exchanges, and working with a wide array of asset issuers. Today, our services span market making, options trading, high-frequency trading, OTC, and DeFi trading desks as well as digital asset management. Keyrock is looking to expand and establish itself as a full-service financial institution through both organic innovation and inorganic growth.

But we’re more than a service provider. We're pioneers in adopting the Rust Development language for our algorithmic trading systems, and champions of its use in the industry. We support the growth of Web3 startups through our Accelerator Program. And we push the industry's progress with our research and governance initiatives.

We're actively building it.

We are seeking a Full Stack Web Engineer with a strong sense of UI/UX design and a proven track record in the financial services industry. You will work across the entire technology stack - from data models and APIs to interactive, high-performance interfaces - building and refining products that deliver tangible business value. You are language-agnostic, pragmatic in your technical choices, and unafraid to experiment when it serves the end user.

You excel in collaborative environments, take ownership of your work, and contribute to a culture of technical excellence through reviews, mentorship, and shared learning. If you combine creativity in front-end craft with a deep appreciation for backend reliability and data integrity, this role is designed for you.

Deliver end-to-end product features - from backend APIs and data models to engaging, responsive UI components.
Review and validate scalable software architectures , ensuring maintainability, reliability, and secure integrations across all layers.
Proven experience building full stack web applications with strong command of both frontend and backend principles.
Proficiency in modern frontend frameworks ( Vue , React or similar) and design systems or component libraries such as Shadcn .
Solid understanding of RESTful API design , and performance optimisation in web contexts
Hands-on experience with relational and/or NoSQL databases , schema design, and query optimisation.
Exposure to data-intensive , governance-driven , or fintech/crypto applications, and curiosity for Rust or distributed systems.
Knowledge of data visualisation libraries (D3.js, Recharts, or similar).
Experience working in cloud-native environments (AWS, GCP, or Azure) and awareness of security-first design .
Comfort working with financial datasets , trade logs, or analytics dashboards.
Experience handling sensitive or regulated data , ideally in financial or crypto contexts.

A competitive salary package

~ As an employer we are committed to building a positive and collaborative work environment.