Rust Web3 Jobs in Brussels, Belgium

Job title: Rust Engineer - Platform

About Keyrock

Since our beginnings in 2017, we've grown to be a leading change-maker in the digital asset space, renowned for our partnerships and innovation.

Today, we rock with over 200 team members around the world. 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. As a well-established market maker, our distinctive expertise led us to expand rapidly. 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 an initiator. We're pioneers in adopting the Rust Development language for our algorithmic trading, and champions of its use in the industry. We support the growth of Web3 startups through our Accelerator Program. We upgrade ecosystems by injecting liquidity into promising DeFi, RWA, and NFT protocols. And we push the industry's progress with our research and governance initiatives.

At Keyrock, we're not just envisioning the future of digital assets. We're actively building it.

Mission statement

As a Platform Backend Engineer (Rust) at Keyrock, you will drive the development and maintenance of the backoffice and trading data platform systems at the core of our organisation. We are looking for a hands-on engineer who is experienced in building scalable, resilient, and high-performance systems and is eager to own the technical implementation of complex infrastructure. The ideal candidate thrives in fast-paced environments, actively collaborates with cross-functional teams, and applies a product-centric mindset to solve technical challenges that directly impact our trading and risk capabilities.

Job description

Rust Development: Design, build, and maintain high-performance backend services and APIs using Rust, ensuring low latency and high availability for critical trading data platforms.

Strong systems engineering fundamentals: Concurrency, memory management, networking, serialization, and observability Solid understanding of performance tuning and profiling in real-world systems.

System Integration: Create seamless integrations between live trading operations (exchanges/DeFi) and backoffice systems, automating workflows to improve operational efficiency.

Cloud-Native Deployment: Deploy and manage services in a cloud-native environment, leveraging AWS, Kubernetes, and Terraform to scale infrastructure infrastructure-as-code.

DevOps & Observability: Maintain GitOps-driven workflows, ensuring robust CI/CD pipelines and implementing deep system observability (logging, metrics, tracing) for rapid incident response.

Database Optimization: Optimize data storage and retrieval strategies (SQL/NoSQL), balancing query performance, cost efficiency, and data integrity in a high-volume financial environment.

Security & Compliance: Engineer solutions with a "Security-First" mindset, ensuring strict adherence to compliance standards and secure handling of sensitive financial data.

Cross-Functional Collaboration: Partner with Product Managers, Risk teams, and other engineers to translate complex business requirements into reliable technical specifications and features.

Technical Excellence: Actively participate in code reviews, contribute to architectural discussions, and mentor fellow engineers to foster a culture of high code quality and innovation.

Continuous Improvement: Stay updated on emerging trends in the Rust ecosystem, cloud infrastructure, and blockchain technologies to continuously refine the platform’s capabilities.

Background and experience

• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field, or equivalent experience.

• Proven experience in building and maintaining data-intensive, large-scale, high-performance trading data platforms.

• Strong expertise in Rust (or C++), Python, and TypeScript for system development and automation in the financial services industry.

• Good understanding of data engineering principles, including data modeling, ETL pipelines, and stream processing.

• Experience with financial services data workflows, including trading, middle office, and back office operations.

• Extensive experience in cloud-native architectures, with proficiency in AWS

• Proficient in GitOps tools and methodologies for infrastructure automation and deployment.

• Strong background in DevSecFinOps, ensuring compliance, security, and cost efficiency across the development lifecycle.

• Hands-on experience with CI/CD pipelines, infrastructure as code (IaC), and monitoring tools.

Our recruitment philosophy

We value self-awareness and powerful communication skills in our recruitment process. We seek fiercely passionate people who understand themselves and their career goals. We're after those with the right skills and a conscious choice to join our field. The perfect fit? A crypto enthusiast who’s driven, collaborative, acts with ownership and delivers solid, scalable outcomes.

Our offer

• A competitive salary package

• Autonomy in your time management thanks to flexible working hours and the opportunity to work remotely

• The freedom to create your own entrepreneurial experience by being part of a team of people in search of excellence

As an employer we are committed to building a positive and collaborative work environment. We welcome employees of all backgrounds, and hire, reward and promote entirely based on merit and performance.

Due to the nature of our business and external requirements, we perform background checks on all potential employees, passing which is a prerequisite to join Keyrock.

https://keyrock.com/careers/