Blockchain Portfolio Manager | High-Growth DeFi Scale-Up | London (Hybrid)

Location: London - Hybrid - 3 days a week in office

Salary: £75,000 - £110,000 + a very attractive performance/profit share

The Client

Harmonic are excited to be partnering with a rapidly scaling Web3 firm that has potential to be the next crypto success story. With strong funding, FTSE 100 clients and Founders focused on scale, they’re building out their DeFi portfolio to become a core driver of growth.

This is a scale-up with exceptional founders, powered by a unified team, and driven by a shared passion for disrupting their industry.

The Role

As Blockchain Portfolio Manager, you’ll take the reins on managing and optimising multi-million-dollar positions across DeFi.

You’ll be designing strategies, capturing yield, running arbitrage, and managing risk in real-time. This is a chance to be right at the sharp end of DeFi, scaling strategies that directly shape the company’s success - with a huge upside for you also.

Key Responsibilities:

• Deploy and manage $2–5M+ on-chain capital across major DeFi protocols
• Drive consistent revenue through liquidity, yield, and arbitrage strategies
• Stay on top of risk (impermanent loss, liquidations, drawdowns) - and act fast
• Build simple dashboards and tools to track performance and efficiency
• Partner with the leadership team to align strategy with business growth
• Respond decisively during market shifts or protocol risks

What We’re Looking For:

• A proven track record of personally managing multi-million-dollar DeFi portfolios with measurable P&L
• Deep knowledge of AMMs (Uniswap, Curve, Balancer), lending (Aave), yield optimisation (Yearn)
• Sharp grasp of DeFi risk mechanics: impermanent loss, liquidations, correlations
• Comfortable with Python or JavaScript for dashboards/automation
• A proactive, commercially minded operator who thrives in fast-moving environments
• Adaptable and curious - quick to get under the hood of new chains and protocols

Please get in contact with [email protected] if this is of interest.

At Harmonic, we are dedicated to fostering an inclusive and equitable workplace. We actively welcome applications from individuals of all backgrounds and assure you that every candidate will be thoughtfully considered for the roles we represent, without regard to race, religion, gender expression, disability, or sexual orientation.