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Snowflake, dbt and Microsoft Certified Cloud Professional Experienced Lead Data Engineer with strong communication skills and sound technical background. Well developed problem solving attributes and excellent understanding of business concepts and customer needs. I help businesses build scalable, high-performance and cost effecitve data solutions. What I Offer: 🔹 End-to-End Data Engineering – ETL/ELT pipeline development, data modeling, and warehousing 🔹 Snowflake and dbt Migrations – Seamless transitions to modern cloud platforms 🔹 Performance Optimization – Faster queries, cost-efficient storage and compute, scalable architecture 🔹 Automation & Workflow Optimization – Reduce manual effort, ensure data reliability 🔹 Mentoring – Working 1-2-1 with individuals or help lead teams with new technologies. Data Engineering Skills: 🔹 Programming Languages – Python, SQL 🔹 Data Ingestion – Airbyte, dltHub, Azure Data Factory 🔹 Data Warehouses – Snowflake, SQL Server, PostgreSQL, DuckDB 🔹 Data Modeling – Kimball, DataVault 2.0 🔹 Transformation – dbt Core/Cloud, Stored Procedures, Streams, Dynamic Tables 🔹 Orchestration and Scheduling – Airflow, Azure Data Factory 🔹 Visualization – Power BI, Quicksight 🔹 Cloud - Azure, AWS Certifications: ✔ Snowflake SnowPro Core certified 3 times ✔ dbt Certified Developer ✔ Azure AZ-900 ✔ Microsoft Exam 70-461: Querying Microsoft SQL Server 2012/2014 ✔ Microsoft Exam 70-463: Implementing a Data Warehouse with Microsoft SQL Server 2012

✔️Expert-Vetted top 1% of Upwork freelancers ✔️Satisfied clients ✔️Fixed price ✔️Unlimited revisions ✔️ Useful insights ✔️Clear explanations ✔️Quality code SEND ME AN UPWORK MESSAGE TO GET A FREE QUOTE ➡️Send me a sample of your data to get an analysis plan and price ➡️Or if you prefer to talk, find out how I can help you with a free 20-minute discovery call SERVICES STATISTICS: 🔹Descriptive statistics 🔹Inferential statistics 🔹Statistical modelling 🔹Hypothesis testing DATA ANALYSIS: 🔹Exploratory data analysis 🔹Data preparation and cleaning 🔹Insight generation 🔹Survey data 🔹Machine learning models 🔹Predictive analytics 🔹Summary analysis and visualization (graphs, reports, presentations, dashboards) CONSULTING & REVIEW: 🔹Review statistical or machine learning models 🔹Performance assessment of existing data science models or products 🔹Develop data science training curriculum and materials 🔹Review or develop data science products, algorithms, processes 🔹Review academic research methods, papers ABOUT ME 🔹Full time freelancer: helping individuals and businesses with their data science problems 🔹Bridge between business and data: integrating your domain knowledge with my data science expertise to produce actionable results 🔹The right tool for your problem: R, Python, SQL, Microsoft Excel, Google Sheets, Snowflake, … 🔹15 years of data science experience: across large UK and US companies and academia 🔹Professionally qualified: Certified Advanced Data Science Professional

Summary ✓ Total 10+ years of experience in developing enterprise data warehousing applications. ✓ 4+ years of experience in implementing end to end Snowflake data warehouse solutions. ✓ Experience in implementing snowflake platform solutions such as RBAC, Row Access Policies, Replication etc. ✓ Experience in Data modelling techniques such as Dimensional Modelling, Data Mesh. ✓ Demonstrated expertise in crafting complex SQL queries to analyze and manipulate large datasets. ✓ Experience working on SQL and NoSQL databases. ✓ Well versed in tools like Pentaho Data Integration, Informatica. ✓ Experience working with multiple clients like Schroders, Equifax, Logitech. ✓ Good experience in converting business requirements into Technical Requirements ✓ Collaborative team player with a track record of successfully tackling intricate data challenges. ✓ Excellent communication and interpersonal skills. ✓ Experience leading a data team from onshore. Technical Skills: ✓ Database: Snowflake, SQL Server, Oracle. ✓ Cloud Technologies: AWS, Azure. ✓ Programming: Python, JavaScript ✓ Scripting: SQL, Unix ✓ Processing Tools: DBT, Pentaho, Informatica. ✓ Orchestration: Airflow ✓ Reporting: Tableau, Streamlit ✓ Collaboration: GIT, SVN ✓ Operating systems: Windows, Linux

🚀 What I Do I design and deliver end-to-end systems—from ingestion pipelines and external APIs to admin dashboards and infrastructure automation. Whether you're building a modern data stack or need clean backend APIs to power your frontend, I can help. 🔧 Core Services Data Engineering: • Snowflake ELT pipelines & external functions (AWS Lambda / Azure Functions) • Real-time ingestion with Snowpipe, cost optimization • Infrastructure-as-code with Terraform Backend/API Dev: • FastAPI, Python, .NET, Postgres • Secure & scalable APIs, webhook processors, SaaS integrations Full-stack Development: • React / .NET admin panels, user portals, reporting tools • UI/UX optimizations and clean architecture DevOps & Automation: • CI/CD, cloud provisioning, serverless architecture (AWS/GCP/Azure) • Monitoring and performance tuning 💼 Notable Projects • Built internal Snowflake platform with external functions + real-time ingestion for large gaming company • Created admin dashboards & reporting pipelines used by 100+ users across teams • Restored 40 TB of data from Elasticsearch backup in a complex cloud migration • Reduced cloud costs by 96% via infra redesign 🤝 Why Work With Me? Clients appreciate my ability to: • Take ownership from architecture to delivery • Communicate clearly & deliver fast • Write code that's easy to hand off or scale I currently work full-time, but I take on freelance projects for companies who want top-tier engineering without micromanagement. 📩 Let’s talk about how I can help your team move faster.

Experienced Big Data Engineer skilled in building and optimizing scalable data pipelines and cloud solutions across Azure, AWS, and GCP. I specialize in ETL/ELT development, workflow automation, and modernizing legacy systems to boost performance, reduce cost, and accelerate analytics. Proficient in Spark, Databricks, Kafka, Python, SQL, Airflow, Snowflake, and Data Lake architectures. Strong track record delivering real‑time streaming, cloud migrations, and high‑performance distributed systems. I improve operational efficiency through pipeline optimization, Terraform/CI‑CD automation, and production grade engineering (logging, monitoring, error handling). I build clean, reliable, analytics ready data ecosystems that power BI, AI, and advanced analytics.

Welcome to My Profile! Are you seeking a seasoned Data Engineer with a proven track record of delivering exceptional results? Look no further! With over 9 years of hands-on experience in Data Engineering and Data Warehousing, I bring a wealth of expertise to the table. Who Am I? I'm Waleed Malik, a dedicated and results-driven professional specializing in ETL & Data Warehouse Development, Data Engineering, and Data Analytics. Throughout my career, I've had the privilege of working with multinational organizations, managing vast amounts of data on a daily basis, and spearheading complex projects from conception to completion. What Sets Me Apart? My passion for data and relentless pursuit of excellence set me apart in the field. I thrive on challenges and am committed to delivering top-notch solutions tailored to meet your specific needs. Whether you're looking to build robust data pipelines, implement self-service BI solutions, or design bespoke data warehouses, I've got you covered. Why Should You Hire Me? Proven Expertise: With a solid background in SQL, AWS, Python, and other cutting-edge technologies, I have the skills and know-how to tackle even the most demanding projects. Reliability: I pride myself on my professionalism, integrity, and commitment to excellence. You can trust me to deliver high-quality work on time, every time. Clear Communication: Effective communication is key to any successful project. I provide regular updates, solicit feedback, and ensure that we're always on the same page. Customer Satisfaction: Your satisfaction is my ultimate goal. I go above and beyond to ensure that you're happy with the end result, offering a 100% money-back guarantee if you're not completely satisfied. Long-Term Support: I believe in building lasting relationships with my clients. Even after the project is completed, I'm here to provide ongoing support and assistance as needed. Let's Work Together! Whether you're embarking on a big project or need assistance with smaller tasks, I'm here to help. From data modeling and analysis to cloud server management and everything in between, I've got the skills and expertise to bring your vision to life. Let's collaborate to turn your data into actionable insights and drive your business forward. Get in touch today, and let's make great things happen together!