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Hernando G.

Hernando G.

Applied Mathematician & Full Stack Developer | Algorithm Design

Hello! . I am Hernando, an Applied Mathematician, Data Analyst, and Full Stack Developer. With 26 years of experience as a university professor of mathematics (specializing in algebra, calculus, and applied statistics at the Universidad del Zulia) and as the founder of the consulting brand Guzmathic, I bridge the gap between deep academic rigor and practical, scalable business solutions. Beyond coding, my core strength lies in algorithmic thinking. As a Venezuelan National Chess Master, I bring a high level of strategic planning, logical optimization, and foresight to every dataset I analyze and every architecture I design. I don't just write scripts; I build robust mathematical models tailored to your specific technical or financial needs. My core technical stack and expertise include: Programming & Full Stack: Python, JavaScript, MATLAB, R. Data & Analytics: Advanced Excel (VBA, macros, dynamic dashboards), SQL Databases, Statistical Inference, and Predictive Modeling. Mathematical Modeling: Optimization algorithms, Bayesian conditional probability, linear/multiple regression, and numerical approximations. Academic & Technical Writing: LaTeX, Overleaf, and the creation of highly technical documentation or competitive syllabi. Recent real-world applications of my work include: Designing and deploying quantitative portfolio backtesting tools in Python using historical corporate fair value data and Sharpe ratios. Building complex, multi-factor Anti-Money Laundering (AML) risk matrices in Microsoft Excel for the financial sector. Developing and structuring advanced algorithmic problem sets for international mathematical Olympiads. Whether you need a full-stack data pipeline, a complex statistical model translated into efficient code, or a flawlessly typeset LaTeX manuscript, I deliver precise and mathematically sound results. Please feel free to review my GitHub portfolio to see my algorithms in action. I look forward to bringing decades of analytical expertise to your next project.

🇻🇪Ciudad Ojeda, Venezuela$30/hr100% JSS4.94 (24)Since Jan 2018

Earnings and projects

MRR
$19

Last 6 months ÷ 6

World#165,761 / 412k
🇻🇪Country#1,532 / 3,245
Revenue, last 30 days
$115

Last 6 months: $114

World#90,238 / 412k
🇻🇪Country#955 / 3,245
Total earnings
$7.6k

Billed in all: $7.6k

World#219,511 / 412k
🇻🇪Country#1,864 / 3,245
Per project
$230

$57 in the last 6 months

World#253,844 / 412k
🇻🇪Country#1,982 / 3,245
Projects, last 6 months
2
50% fixed50% hourly
World#88,918 / 412k
🇻🇪Country#612 / 3,245
Projects in all
33

Across 48 contracts

65% fixed35% hourly
World#89,874 / 412k
🇻🇪Country#476 / 3,245

Earnings, last 30 days

$7.6k+$115 earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$7.5k$7.6k$7.7kOct 8Oct 23Nov 7

Skill rankings: Top 29% in Statistics

Ranked by MRR among everyone on Upwork with the skill.

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  2. #38Probability Theory104 freelancers · 🇻🇪 #2Top 37%
  3. #47Differential Calculus123 freelancers · 🇻🇪 #2Top 38%
  4. #50Integral Calculus119 freelancers · 🇻🇪 #1Top 42%
  5. #51Mathematical Optimization171 freelancers · 🇻🇪 #1Top 30%
  6. #53Linear Regression165 freelancers · 🇻🇪 #2Top 32%
  7. #72Geometry184 freelancers · 🇻🇪 #5Top 39%
  8. #73Mathematical Modeling224 freelancers · 🇻🇪 #4Top 33%