Requirements
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### Must have:

### - 5+ years in software architecture or senior engineering roles. - Deep experience with low-latency systems: trading, fintech, or similar real-time domains. - Strong command of TypeScript / JavaScript, ideally Rust for performance-critical components. - Hands-on with AWS and/or Azure, including infrastructure design and cost optimisation. - Solid understanding of WebSocket architectures and real-time data delivery. - Experience with Redis for caching, pub/sub, and session management. - Comfortable with Docker and containerised deployment pipelines. - Familiarity with Supabase or PostgreSQL-based systems. - Experience in or strong interest in trading: futures, prop firms, or related domains. - AI-native mindset: Cursor and Claude are a natural part of your workflow. - Fluent in Dutch or English.

Responsibilities:
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- Design and own the architecture of our core platform: trade copier, journal, analytics, risk engine, expense tracking, and real-time data systems. - Build and optimise low-latency trade execution pipelines in Rust and TypeScript. - Architect scalable WebSocket infrastructure that streams fills across every supported broker and thousands of concurrent connections. - Make infrastructure decisions across AWS and Azure, including caching strategies with Redis and database design with Supabase / SQL. - Containerise and manage services with Docker, maintaining reliability across environments. - Integrate AI-assisted development workflows (Cursor, Claude) to accelerate shipping. - Collaborate closely with the founding team on product direction and technical strategy. - Set coding standards, review architecture decisions, and mentor engineers as the team grows.
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Company:
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Tradesyncer is the fastest growing platform futures traders use to scale and improve their trading. We provide trade copying across unlimited evaluation and funded accounts in under 100 ms, plus a trading journal, analytics, expense tracking and risk management, all in one cloud-based place with no installs. We operate 24/7 and integrate with leading futures brokers and prop firms. We are a small, fast-moving team based in Amsterdam, with on-site preferred and hybrid possible. The role offers direct impact, real ownership, full platform access, prop firm partnerships, and a monthly compensation of €10,000 to €12,000, plus a budget for hardware, tools and learning.
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