Meet the People Behind dioneraviloxe
Our team combines decades of real-world financial experience with a genuine passion for teaching others how to navigate complex financial landscapes with confidence.
Our Expert Team
Each team member brings unique perspectives shaped by years of hands-on experience in different areas of financial analysis and risk management.

Marlena Castellanos
Senior Financial Analyst & Lead Instructor
Marlena discovered her knack for financial analysis while working at a mid-sized investment firm in Manchester back in 2012. What started as curiosity about market patterns turned into a 13-year career analyzing everything from emerging market bonds to complex derivative structures. She's particularly good at breaking down intimidating concepts — something her colleagues noticed when junior analysts kept seeking her guidance. Her teaching approach focuses on real scenarios rather than textbook theories, often sharing stories from her experience with currency hedging during the 2020 market volatility.

Tiffani Brewster
Risk Assessment Specialist & Course Developer
Before joining dioneraviloxe, Tiffani spent eight years at a regional bank where she developed their first comprehensive small business risk assessment framework. She has this uncanny ability to spot potential problems in financial statements that others might overlook — a skill that proved invaluable during the economic uncertainties of recent years. Her background in both traditional banking and fintech startups gives her a unique perspective on how financial analysis is evolving. Tiffani designs our practical exercises and case studies, drawing from real situations she encountered while evaluating loan applications and business expansion proposals.
Learning Through Real Experience
We believe financial analysis skills develop best when you work with actual scenarios rather than hypothetical examples. That's why our courses use real company data, genuine market situations, and the kind of messy, incomplete information you'll encounter in professional settings.
Our approach isn't about memorizing formulas or following rigid procedures. Instead, we focus on developing the analytical thinking and practical judgment that experienced financial professionals rely on every day. Because honestly, that's what makes the difference between someone who can calculate ratios and someone who can provide meaningful financial insights.
Why We Started dioneraviloxe
After years of mentoring junior analysts and answering the same questions repeatedly, Marlena and Tiffani realized something was missing from traditional financial education. Most programs focus heavily on theory but leave students unprepared for the nuanced decision-making required in real financial analysis work.
dioneraviloxe exists to bridge that gap. We created courses that mirror the actual experience of working as a financial analyst — complete with incomplete data, time pressures, and the need to communicate findings to non-technical stakeholders. Our goal is helping people develop the confidence and practical skills needed to contribute meaningfully from their first day on the job.
Practical Above All
Every lesson connects directly to real-world applications. We skip the academic fluff and focus on skills you'll actually use when analyzing financial statements, evaluating investment opportunities, or assessing business performance.
Learning From Mistakes
Both Marlena and Tiffani share stories of their own analytical missteps and what those experiences taught them. We believe learning about common pitfalls is just as valuable as learning correct techniques.
Individual Growth
Everyone comes to financial analysis from different backgrounds and with different strengths. Our courses accommodate various learning styles and provide multiple pathways for skill development rather than a one-size-fits-all approach.