Koyena Roy

About Koyena Roy

I am a results-driven and detail-oriented professional with a B.Tech in Computer Science & Engineering and a strong foundation in data analytics, machine learning, and business research. My academic background, combined with hands-on freelance experience, has enabled me to independently deliver client-focused data solutions across multiple countries, including Canada, Australia, and the UK.Throughout my journey, I have developed the ability to analyze complex data, design interactive dashboards, and build machine learning models that solve real-world business problems. I am proficient in tools such as Excel, Power BI, SQL, and Python, and skilled in libraries like Scikit-learn, TensorFlow, Matplotlib, and Seaborn. My experience includes building predictive models for pricing and customer churn, performing sentiment and text classification using NLP, and creating data visualizations that simplify business insights.I have completed over 10 practical projects, including an Airbnb price prediction model, sentiment analysis of IMDb reviews, retail sales optimization, and a classification system for legal documents. One of my most impactful contributions was the development of an Automated Penetration Testing Tool, which aligns with my growing interest in cybersecurity and system-level automation.In addition to technical skills, I bring a strong commitment to continuous learning. I’ve earned certifications in Data Analytics, Advanced Excel, Power BI, SQL, Python for data preparation, NLP, and Deep Learning. I’m currently expanding my skills in AWS Cloud, Collibra, and Lumi to strengthen my capabilities in cloud services and data governance frameworks.What sets me apart is my ability to work independently, manage end-to-end project responsibilities, and translate data into clear, actionable outcomes. My communication skills and adaptability have allowed me to work directly with clients, understand their goals, and deliver tailored solutions with measurable impact.I’m now seeking challenging opportunities in Data Science, Data Analytics, or Data Governance where I can apply my skills, contribute meaningfully to organizational growth, and continue to evolve as a technology professional.Let’s connect if you\'re seeking someone with a strong technical foundation, hands-on experience, and a mindset focused on growth, collaboration, and problem-solving.

Experience

1. Senior Data Analyst

   Freelancer.com

   May 2021 — Present

   Advised startups across QSR, e-commerce, sustainability, and events with data-backed financial models and operational strategies.Built 5-year Excel forecasts for a Canadian QSR, projecting $3.2M revenue and 67.5K-unit break-even, with 26.4K surplus in Year 1.Enhanced pricing via Australian QSR benchmarks, boosting per-unit margins by 23.6% and ROI.Audited 6 months of e-commerce refunds, revealing 8.4-day delays affecting $310K cash flow and $180K inventory-linked losses.Proposed automation via Python, Power BI, and Excel, projecting $400K/year savings and 25% lift in retention.Crafted GTM strategy for green-tech AI home system across 5 regions; identified $1.2B market using Statista, IBISWorld, and SWOT.Designed localized market entries with SEO, influencer, and B2B eco-collaborations in Europe, SE Asia, and Australia.Managed community campaign earning $7.7K revenue and $4.3K profit (127% ROI) via Excel-led ticketing and Canva creatives.Led market research using IBISWorld and Statistics Canada to refine outreach for Canada’s 20.8% disabled population.

Education

• Internshala Trainings

  Data Science

• Institute Of Engineering and Management

  Bachelor of Technology - BTech

  2020