Available for freelance & research collaboration

I engineer statistically rigorous ML systems & high-conversion academic profiles.

Machine Learning Engineer · Frontend Engineer · Data Scientist · Research Scientist
Building production-grade ML pipelines and stunning web portfolios, publishing peer-reviewed research, and crafting CVs & SOPs that open doors to global universities and top tech roles.

GitHub Portfolio Best Research Paper Award 2025 IELTS 7.0
98.3%
Peak ML Accuracy
127
Countries Classified
55K+
Records Processed
3
Papers Under Review
# Governance Classification Framework
model = EnsemblePipeline(
  n_countries=127,
  accuracy=0.943,
  validation="bootstrap",
  correction="BH-FDR"
)
# Consistency across 100 configs: 95.4%

Research-grade rigor.
Real-world impact.

Sarder Junaid Ahmed
Dhaka, Bangladesh
+880 171-820-0525
junaidahmedrupok@gmail.com
B.Sc. CSE — RUET (CGPA 3.08/4.00)

ML Systems. Frontend Engineering. Research-Grade Rigor.

I'm a Machine Learning Engineer, Frontend Engineer, and Data Scientist from Bangladesh with a BSc in Computer Science & Engineering from RUET. My work sits at the intersection of statistical rigor and real-world ML deployment — I don't just train models, I validate their assumptions, correct for multiple comparisons, and stress-test results across randomized configurations.

On the frontend side, I design and engineer production-grade web portfolios and personal websites — the very portfolio you're looking at right now is a live example of that work. Clean architecture, smooth animations, responsive layouts, and conversion-focused design are as natural to me as writing a hypothesis test.

My research has produced an award-winning paper at APMEE 2025 on multi-dimensional statistical similarity for governance classification — moving beyond arbitrary thresholds toward principled statistical frameworks. Three additional first-author manuscripts are currently under peer review.

Beyond engineering, I run a CV, SOP & Portfolio consulting service that has helped students and professionals land positions at global institutions. I understand what selection committees and hiring managers look for — and I build profiles that speak directly to them.

I have also hosted live radio shows, published poetry, and competed in national recitation — because great communication is as important as great code.

Machine Learning Statistical Inference Causal Inference Frontend Engineering Portfolio Design & Build Python · XGBoost · TensorFlow HTML · CSS · JavaScript Bayesian Methods Data Pipelines Academic Writing CV / SOP Design Web Portfolio Development

Premium consulting.
Measurable outcomes.

Each service is a productized consulting engagement — not a freelance gig. You get research-grade thinking applied to your career.

📄
Most Popular

CV / Resume Design

ATS-optimized, globally competitive CVs for tech roles and academic applications. Engineered for impact, not just aesthetics.

  • ATS keyword optimization for global roles
  • Academic + industry variants
  • Achievement-quantified bullet engineering
  • LaTeX or Word delivery
  • 2 revision rounds included
Get Started →
🎓
High Impact

Statement of Purpose

Research-driven SOPs for MS and PhD applications. I know what committees look for because I've read the literature and built the systems they research.

  • Program-specific narrative strategy
  • Research alignment storytelling
  • Professor & lab targeting guidance
  • Multiple drafts & full revision
  • Admission-optimized final polish
Get Started →
🌐
Frontend Engineering

Portfolio Design & Development

I design and build production-grade personal portfolio websites from scratch — the very site you're on right now is a live example. Clean code, stunning UI, and conversion-focused structure.

  • Custom-coded HTML/CSS/JS or React
  • Responsive, mobile-first design
  • Smooth animations & micro-interactions
  • GitHub Pages / Netlify / Vercel deploy
  • SEO optimized & fast-loading
Get Started →
🔍
For Professionals

Portfolio Audit & Optimization

Already have a portfolio but it's not converting? I audit it like a hiring manager and give you a detailed report on what to fix — positioning, branding, technical credibility, and UX.

  • Detailed positioning audit report
  • Project presentation improvements
  • Personal brand refinement
  • Conversion rate recommendations
  • 30-min strategy call included
Get Started →

Production-grade systems.
Real data. Real results.

Every project below is a full-stack ML system — from raw data ingestion to validated, reproducible results.

PROJECT · 01 p < 0.001

Enterprise Survey Analysis Pipeline

End-to-end data pipeline processing 55,620 enterprise records across 117 industries from the New Zealand Annual Enterprise Survey. One-Way ANOVA testing across all categorical variables with automated cleaning, visualization, and insight reporting.

55,620
Records
117
Industries
<0.001
p-value
Python Pandas ANOVA Matplotlib Seaborn
View on GitHub
PROJECT · 02 98.3% Accuracy

Economic Development Classifier

ML system classifying 150+ countries as developed or developing using World Bank indicators. Principled feature selection addresses high-dimensionality. Class imbalance handled through appropriate sampling strategies with full validation pipeline.

98.3%
Accuracy
150+
Countries
WB
Data Source
Scikit-learn Feature Eng. Random Forest XGBoost Cross-val
View on GitHub
PROJECT · 03 93% Accuracy

Crime Classification & Prediction Engine

XGBoost ensemble architecture for 6-class crime prediction with fairness-aware evaluation metrics. Spatial-temporal feature engineering from raw datasets with distributional assumption validation for robust deployment.

93%
Accuracy
6
Classes
XGB
Ensemble
XGBoost Ensemble Spatial-Temporal Fairness Python
View on GitHub
PROJECT · 04 94% Accuracy

Governance Classification System

Statistical inference framework classifying political governance across 127 nations. Multi-dimensional similarity metrics with bootstrap validation and Benjamini-Hochberg FDR correction. 95.4% consistency across 100 randomized configurations.

94%
Accuracy
127
Nations
95.4%
Consistency
Bootstrap FDR Correction Hypothesis Testing KS Test Python
View on GitHub
PROJECT · 05 · FRONTEND Live — You're looking at it

This Portfolio — Production-Grade Personal Website

Designed and engineered entirely from scratch as a self-contained single-file HTML/CSS/JS product. Features a custom dark design system with CSS variables, smooth scroll-triggered animations via IntersectionObserver, embedded base64 assets for zero external dependencies, fully responsive layout, and conversion-optimized structure. This site is itself the proof of frontend engineering capability.

HTML5 CSS3 Vanilla JS Design Systems IntersectionObserver Base64 Assets Responsive SEO
View Source on GitHub

Peer-reviewed work.
Award-winning research.

🏆 Best Paper Award
Multi-Dimensional Statistical Similarity for Governance Classification: Beyond Arbitrary Thresholds in Comparative Politics
Ahmed, S.J. (2025) · 6th Annual Paper Meet Electrical Engineering Division (APMEE 2025) · Oral Presentation
🏆 Received Best Research Paper Award
Under Review
Democracy's Financial Paradox: How Economic Barriers Reconstitute Elite Power
Ahmed, S.J. (2025) · First Author · Manuscript Under Peer Review
Under Review
Machine Learning for Crime Classification: A Fairness-Aware Approach to Class Imbalance
Ahmed, S.J., Islam Nahian, M.T., & Kwoshik, M.H.R. (2025) · First Author · Manuscript Under Peer Review
Under Review
Using Machine Learning to Classify Countries as Developed or Developing: A Practical Approach with Real Validation
Ahmed, S.J., Kwoshik, M.H.R., & Islam Nahian, M.T. (2025) · First Author · Manuscript Under Peer Review

Leadership in research.
Proven mentorship.

2026 — Present
Royal Scientific Publications
Bangladesh

Researcher

Research · Applied Mathematics
  • Conduct rigorous mathematical research and develop novel solutions addressing open problems in applied mathematics and computational science
  • Collaborate on peer-reviewed publications synthesizing mathematical theory with practical ML applications
  • Apply measure-theoretic and probabilistic frameworks to complex research problems
May 2022 — May 2024
Young Learners' Research Lab
RUET

Senior Researcher & Executive Committee Member

ML · Statistical Inference · Mentorship
  • Led machine learning analysis, statistical inference, and numerical analysis for lab-wide research with focus on methodological rigor and assumption validation
  • Mentored 5+ junior researchers on Bayesian inference and causal inference methodology
  • Led analysis employing hypothesis testing (Mann-Whitney U, KS, Shapiro-Wilk) with Benjamini-Hochberg FDR correction
  • Established reproducible research standards and open science protocols adopted lab-wide
🏅 Esteemed Alumni Award (2024) · Certificate of Appreciation for Research Mentorship Excellence (2024)
2019 — Present
Self-employed
Dhaka, Bangladesh

Independent Tutor & Peer Mentor

Teaching · Mathematics · Engineering Prep
  • Instructed 50+ students in Physics, Chemistry, Higher Mathematics, ICT, and English across high school and university level
  • Mentored 5 students to achieve perfect GPAs (5.00/5.00) on national SSC & HSC board exams
  • Guided 4 students to gain admission to premier engineering universities (RUET, BUET, CUET)
  • Mentored 10+ university peers in Vector Calculus, Statistics, Linear Algebra, and ML fundamentals

Let's build impactful ML systems — or shape your academic future together.

Open for freelance ML engineering, research collaboration, academic consulting, and CV & SOP services. Based in Dhaka, available globally.

Available for freelance, research collaboration & academic consulting
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