SphereInvest’s core investment team has more than 70 years’ industry experience in research, trading, and portfolio management through various market cycles.
Our portfolio managers work closely together to identify opportunities, engage with issuers, and construct a robust portfolio capable of delivering superior risk adjusted returns.
The investment team is supported internally by our operations, risk, finance, compliance, and marketing teams.
Investment
Credit Team
Driving performance through rigorous research, issuer engagement, and active portfolio management across global credit markets.
Joseph Strubel
Senior Advisor & Co-Founder
- 40+ years’ experience in investment research, trading and portfolio management
- Non-exec director on the board of S&P Global Ratings 2015 – 2019
- Senior Investment roles at Millennium Global, Renaissance Capital, SBC Warburg, HSBC & Merrill Lynch
- BA Economics & MBA Finance/Applied Economics
Sebastian Hofmeister
Senior Portfolio Manager
- 25+ years’ experience in investment research and portfolio management
- Head of Latam credit at Lucror Analytics
- Senior Analyst / Portfolio Manager for NN Investment Partners’ European high yield bond strategy
- 10-years as a ratings analyst at Moody’s
- BA and MA Economics
- CFA Charter Holder
Gerd Balon
Portfolio Manager
- 20+ years’ experience in investment research and portfolio management
- Head of Fixed Income at Anchor Investment Management
- Corporate Credit Analyst Team Leader at Raiffeisten Zentralbank
- BSc Industrial Engineering, MBA Information Management, and Dr in Operations Research
- CFA Charter Holder
Tiberiu Samareanu
Junior Portfolio Manager
- 15+ years’ experience in investment research, trading and portfolio management
- Head of Trading at TradExec Ltd.
- Derivatives trading at Union Capital Group, Macroeconomic research at National Bank of Romania, Financial Data Management at Erst Group
- MSc Finance
- CFA Charter Holder
Operations
Risk Management, Finance and Marketing Team
Ensuring robust oversight, operational integrity, and financial transparency across all aspects of the business.
Nicholas Snelling
Chief Operating Officer & Co-Founder
- 30+ years’ experience in financial services
- COO and CFO at Cedar Investment Management Ltd, CFO at Agora Capital Management Ltd.
- BA Accounting and Financial Control
- Member of the Institute of Chartered Accountants in England and Wales.
Roscoe Camilleri
Chief Financial Officer
- 20+ years’ experience in industry and financial services
- CFA Compliance and Money Laundering Reporting Officer
- Managed several FTSE100 multinational groups at Marsh Management Services
- Member of Chartered Institute of Securities and Investments
- Chartered Certified Accountant
Tracey Mifsud
Financial Controller
- Senior Auditor and Audit Supervisor for Park Russell Turner
- Associate Auditor for Grant Thornton
- BA Commerce and MSc Accountancy
Joshua Snelling
Investor Relations Manager
- 5+ years’ experience in financial marketing
- Customer relationship role at a large multi-national
- Developed digital marketing capabilities
Andrew McDermott
Database Manager & Marketing Assistant
- MSc in Strategic Management, data-driven decision-making
- Optimised the firms CRM strategy and data management
- Previous customer service role at a multi-national corporation
Shape the Future
Join a team that values insight, innovation, and long-term impact. At SphereInvest, we believe in empowering talented individuals to think independently, challenge convention, and contribute meaningfully to the development of forward-thinking investment strategies. Whether you're a seasoned professional or an emerging talent, you'll find an environment that encourages growth, rewards curiosity, and is committed to building lasting value—for our clients, our people, and the markets we serve.
