Goal: Deliver Quality Work Built on Trust A versatile Website and Mobile App Developer with strong expertise in data analytics and automation. I specialize in building efficient, user-friendly digital solutions—from responsive websites to scalable mobile applications—while ensuring high-quality performance and seamless user experience. Alongside development, I am a Microsoft Excel and Google Sheets Expert, with advanced skills in: Pivot Tables, Power Query, and complex formulas VBA (Macros) for automation Data modeling, cleaning, and transformation Dashboard creation and reporting systems I bring a strong background as a Reports Analyst, where I design automated reporting tools, interactive dashboards, and data-driven solutions that improve business decision-making. My work focuses on optimizing workflows, enhancing data accuracy, and transforming complex datasets into clear, actionable insights. Key strengths include: Full-cycle web and mobile app development Data-driven application design Reports automation and template creation Data entry, research, and validation Performance optimization and system efficiency I am committed to delivering reliable, scalable, and high-quality solutions, while maintaining excellent communication and customer service. Mission: Continuously deliver innovative solutions with quality, efficiency, and trust.

I help businesses build fast, reliable, and automated Power BI reporting systems backed by clean Azure SQL models, Microsoft Fabric, scalable ETL pipelines, and optimized semantic models. Slow Power BI dashboards, failed refreshes, and inconsistent numbers are usually not just dashboard problems. They often come from issues in the data model, SQL layer, or ETL pipelines behind the reports. That is where I help. I design, rebuild, and optimize complete reporting systems from raw data to final dashboards turning fragmented data into fast, stable, and decision-ready Power BI solutions. My focus is simple: build and optimize end-to-end data systems that make Power BI fast, reliable, and scalable, even with complex and growing data. Results Delivered: • Reduced dashboard load times from minutes to seconds • Fixed broken refresh pipelines and unstable reports • Built end-to-end reporting systems from ETL to data model to dashboard • Created consistent KPI layers across multiple reports • Automated manual reporting workflows • Delivered dashboards used by leadership for business decisions Core Expertise: • Power BI dashboards, KPI reporting, performance tuning, and data modeling • DAX and Power Query optimization • Power BI Service setup, workspace management, and automated refresh • Microsoft Fabric, Lakehouse, Warehouse, Dataflows, and modern BI architecture • Azure Data Factory and ETL/ELT pipelines • Azure SQL, SQL Server, views, stored procedures, and reporting layers • SQL query tuning, indexing, and performance optimization • Multi-source integration including APIs, BigQuery, Snowflake, Excel, SharePoint, and databases • Star schema design, semantic modeling, relationships, and scalable reporting architecture Why Clients Choose Me: • Top Rated Plus Upwork freelancer • $50K+ earned on Upwork • 100% Job Success with consistent client satisfaction • Microsoft Certified: Azure Data Engineer Associate • 7+ years of real-world BI and data engineering experience • Strong expertise across the full data stack: ETL, SQL, modeling, and reporting • Focus on performance, scalability, and long-term reliability • Clear communication with both technical and business teams Some projects need dashboards built from scratch. Others need slow or broken reports fixed. I can help with both. Instead of treating Power BI as a standalone tool, I handle the full system behind it data pipelines, SQL models, semantic layers, refresh logic, and dashboard performance so the final solution is accurate, automated, and built to scale. Whether you need a complete reporting system from scratch or want to fix an existing Power BI setup, I can review the current gaps in SQL, ETL, data modeling, or dashboard performance and help build a solution that works reliably long term.

I'm a data journalist, so I try to tell stories with data. I've been doing so since 2012, with Tableau as my primary tool. I started doing corporate consulting full time in 2016, and it's been a perfect fit for me. I enjoy building workbooks with custom functionality, and I'd love to build yours just the way you want it.

Your dashboards are slow, your data sources don't agree with each other, and leadership has stopped trusting the numbers, I rebuild the analytics layer underneath, using dbt on Snowflake or BigQuery, so your team makes decisions on data you can actually defend. With over 11,000 hours logged and 80+ projects delivered on Upwork, I've worked with growth-stage SaaS startups, fintechs, retail and eCommerce operators, real estate firms, and global research organizations to design dbt-based data models, build end-to-end ETL/ELT pipelines, and deliver BI systems that eliminate reporting delays. A few projects I've led recently: CGIAR - Built a centralized enterprise analytics platform on Microsoft Fabric and Power BI, replacing fragmented reporting across a global research consortium. Sojo Industries - Designed a continuous intelligence layer delivering real-time visibility and enterprise-grade analytics for retail operations. Markets4U - Migrated a fast-growing fintech off Metabase, Oracle BI, and Vertica onto a high-performance analytics stack built for real-time decisions. Westwise - Centralized fragmented data sources to power marketing and sales insights for a legal services platform. ECAP - Delivered analytics and financial modeling for a private real estate investment firm managing strategic property portfolios. Voice AI Automation Company - Integrated Stripe, HubSpot, GA4, Google Ads, Linear, Pylon, and MongoDB into a unified, business-ready data model for an AI-first SaaS company. How I work across the analytics engineering stack: Data Modeling and Transformation - I build dbt models on Snowflake and BigQuery that turn raw, multi-source data into clean, analytics-ready datasets. Strong focus on testing, documentation, and modular design so your data layer stays reliable as it scales. Data Engineering and Pipelines - I design and maintain ETL/ELT pipelines using SQL, Python, and Apache Airflow across AWS, GCP, and Azure. Whether you need to ingest from APIs, sync SaaS tools, or move data between warehouses, I build pipelines that don't break when your business grows. Business Intelligence and Dashboards - I build interactive dashboards in Power BI, Tableau, and Looker Studio that turn analytics-ready data into clear, actionable insights for stakeholders. KPI tracking, executive reporting, self-service analytics — designed for the people who actually use them. Cloud and Warehouse Expertise - Deep work across Snowflake, BigQuery, PostgreSQL, and Redshift, with hands-on experience integrating GA4, HubSpot, Salesforce, Stripe, and other SaaS data sources into unified warehouses for cross-functional reporting. Why clients keep working with me: - 11,00+ hours logged, 100% Job Success Score, Top Rated Plus - End-to-end ownership from data ingestion through dbt modeling to dashboard delivery - I translate technical complexity into business outcomes, not jargon - Long-term clients rehire me for scale-up support, audits, and platform migrations - Available for project-based work and ongoing analytics engineering partnerships If your reports are slow, your data sources don't talk to each other, or you can't trust the numbers in your dashboards — let's talk. I'll audit your current stack, identify what's broken, and rebuild the foundation your team needs to make confident, data-driven decisions. Send me a message and I'll map out a plan tailored to your analytics, data engineering, or dashboard work — clear scope, real outcomes, no fluff.

Top Rated Plus | 100% Job Success | Founder, DataNicely I help growing organizations fix reporting that can't keep pace with the business — when metrics don't align, dashboards aren't trusted, and leadership needs clearer, more reliable answers. I design analytics and reporting systems executives can depend on and teams actually use, enabling decisions to be driven by consistent, trusted data instead of spreadsheets and guesswork. As founder of DataNicely, I partner with leadership teams to bridge the gap between analytics strategy and execution — from defining KPIs and reporting roadmaps to building automated dashboards and data pipelines that eliminate manual effort. I also build AI agents on top of that clean data layer, so teams can ask questions of their data in plain language, specific to their role, without needing a data analyst in the room. With over 13 years of experience in analytics and data engineering, I've led initiatives across financial services, restaurant groups, nonprofits, and e-commerce — helping organizations centralize data, align metrics, and make confident, data-driven decisions. ⸻ Core Services • Analytics infrastructure design and data strategy consulting • Tracking cleanup and implementation (GA4, GTM, Meta Pixel, Conversions API) • AI-powered analytics agents (built on leading LLMs) • KPI definition, metric alignment, and reporting frameworks • Dashboard development (Power BI, Tableau, Sigma Compute, Looker Studio) • ETL/ELT pipelines, data integration, and workflow automation (BigQuery, dbt, Make, Python) • Automated reporting, monitoring, and real-time alerting ⸻ Tech Stack BigQuery | dbt | GA4 | GTM | Meta Pixel | Make | Power BI | Tableau | Snowflake | Looker Studio | Python ⸻ If your data infrastructure isn't keeping up with your business, that's the problem I solve — from the ground up.

OBJECTIVE Being a highly skilled data engineer, I am adept at maximizing the potential of Power BI. I have the expertise to efficiently automate any spreadsheet using Google Sheets, Google App Script, and Excel."

🚀 Results-Driven Data Analytics Professional | Transforming Data into Strategic Insights 📊 I am a passionate and results-oriented data professional with expertise in leveraging advanced analytics tools like Tableau, Alteryx, Power BI, Excel, and Looker Studio to turn complex data into clear, actionable insights. With a strong focus on data-driven decision-making, I specialize in helping organizations unlock the full potential of their data to drive growth, efficiency, and innovation. 💡 🔍 Key Skills & Expertise: 🔹Data Visualization: Crafting intuitive dashboards and reports that tell the story behind the numbers. 🔹Data Preparation & Transformation: Mastering tools like Alteryx and Excel to clean, process, and optimize datasets for analysis. 🔹Advanced Analytics: Extracting actionable insights and trends to inform business strategies and decisions. 🔹Cross-Industry Experience: Successfully applying data solutions in diverse sectors to solve unique business challenges. I thrive on challenges and am always looking for innovative ways to harness data for strategic advantage. If you're looking to unlock new insights and accelerate your data-driven success, let's connect and collaborate! 🚀🔗

I build the reporting infrastructure that marketing agencies and growth-focused teams use to make faster, more confident budget decisions. When you're managing significant ad spend across multiple channels, disconnected data is expensive. Ads, GA4, CRM, and payment systems each tell a different story, and reconciling them manually burns analyst hours and delays the decisions that matter. I design and build unified data systems that consolidate everything into one reliable source of truth, so your team stops debating numbers and starts acting on them. Clients use these systems to track MER, ROAS, CAC, LTV, and channel performance in one place — without the spreadsheet overhead. RESULTS - Scaled a marketing analytics stack for a SaaS team managing ad spend from $20K to $1.2M per month - Reduced manual reporting time by 90% for a marketing agency - Improved marketing budget efficiency by 25% for an ecommerce brand - Increased conversion accuracy by consolidating attribution across Ads, GA4, and CRM data WHAT I BUILD - Data pipelines that unify Ads, GA4, CRM, and revenue data into a single queryable source - Looker Studio and Power BI dashboards for marketing performance and leadership reporting - Automated reporting systems that eliminate manual spreadsheet work - Clean, structured datasets built for budget decisions and client reporting CORE STACK BigQuery, SQL, Looker Studio, Power BI, GA4, Google Ads, Meta Ads, ETL pipelines, data modelling If your reporting infrastructure isn't keeping pace with your growth, send a message and let's talk about what a reliable system looks like for your setup.

🚀 Microsoft Certified BI Developer / Data Analyst — Fast and Effective Data Solutions My name is Denys, and I specialize in building dashboards, automated reports, and templates using Power BI, Excel, Google Sheets and Superset. My goal is to help businesses work seamlessly with data, make informed decisions, and save time. What I Can Help You With: 1. Dashboards in Power BI, Excel, Google Sheets or Superset - Creating interactive dashboards for monitoring sales, marketing campaigns, or operational efficiency. - Setting up automated data refresh. - Implementing RLS to protect sensitive information. - Advanced data visualization 2. Developing Templates in Excel and Google Sheets - Templates for automated reporting: weekly, monthly, or quarterly reports. - Building custom calculation sheets for forecasting, budgeting, or performance evaluation. - Designing interactive control elements (filters, dynamic charts) for easy data analysis. - Automating data processing using Power Query and built-in functions. 3. Optimizing and Scaling Your BI Solutions - Assessing and enhancing existing Power BI dashboards or Excel/Google Sheets templates. - Adding new features: interactive parameters, complex DAX formulas, or customized KPIs. - Creating centralized reports to consolidate data from multiple sources. 4. Consulting and Training - Reviewing your current reporting system and providing improvement recommendations. - Training your team on Power BI, Excel, or Google Sheets to increase independence. - Implementing BI best practices to build reliable and efficient analytical solutions. - Offering ongoing support and consulting after project completion. 5. Any custom solutions with my Tech Stack Technical Skills and Tools: Visualization and Reporting Platforms - Power BI: Power Query Editor, DAX measures, Power Pivot, Power BI Service, Dataflows, Incremental Refresh, Field Parameters, RLS, Power BI Gateway - Superset: Designing and deploying charts and dashboards - Excel & Google Sheets: Advanced formulas, PivotTables, PivotCharts, Smart Tables, Power Query, DAX measures, data validation, and automation Data Collection and Analysis - SQL (DQL, DDL, DML): Aggregate functions, subqueries, JOIN operations, grouping, filtering, data transformation, creating views - API Integrations: Extracting data from external systems - Power Apps: Dataverse, Canvas Apps, Model-Driven Apps, UI customization, error handling Data Automation and Processing - Power Query: Automating ETL processes, data cleaning, and transformation in Power BI and Excel - DAX Studio & Tabular Editor: Advanced DAX debugging and optimization - Azure Data Studio: Managing and querying databases Additional Tools - Best Practices Analyzer: Ensuring efficient and reliable of data model Why Choose Me? - Clear understanding of your needs: I deliver solutions that address real business challenges. - Efficiency: I optimize processes to save you time and resources. - Reliability: Always meeting deadlines and ensuring high-quality work. - Flexibility: I handle both large-scale projects and quick tasks. Ready to enhance your reporting and data analysis? Click "Invite" to discuss your project and get BI solutions that transform the way you work with data! 🌐 **Keywords:** Excel, Google Sheets, Data Studio, Power BI, E-commerce Reporting, Automation, Dashboards, Data Analytics, Insights, SQL, Python, Tableau, Data Visualization, Predictive Analytics, Data Mining, Big Data, Business Intelligence, Statistical Analysis, Data Cleaning, Data Manipulation, Data Modeling, Data Integration, Data Warehousing, Database Management, KPI Tracking, Analysis, Customer Analysis, Market Research, Google Analytics, A/B Testing, Risk Analysis, Financial Modeling, Project Management, Optimization Techniques, CRM Data Analysis, Web Analytics, Sentiment Analysis, Data Governance, Report Writing, Data Quality, Advanced Excel, Data Security, Scripting, User Behavior Analysis, Pattern Recognition, Data Strategy, ETL Processes, Data Extraction, Data Transformation, Data Loading, BI Reporting, OLAP, Data Architecture, Data Science, SQL Server, Data Engineering, Data Compliance, Data Privacy, Dimensional Modeling, Business Analysis, Requirements Gathering, Performance Metrics, Data Analytics Tools, Data Warehouse Design, OLTP, QlikView, DataOps, Business Process Analysis, BI Solutions, Data Literacy, User Experience Analysis, Predictive Modeling, Cluster Analysis, Data, Data Lakes, Real-time Analytics, Interactive Dashboards, Reporting Tools, KPI Dashboards, Financial Reporting, Custom Reports, Automated Reporting, Executive Dashboards, Sales Reporting, Performance Dashboards, Operational Reports, Visualization Tools, Scorecards, Dashboard Design, Reporting Standards, Ad-hoc Reporting, Data Storytelling, Dashboard Metrics, Analytical Reports, Reporting Automation, Dashboard Customization, Data Reporting, Reporting Analysis.

I am available for new projects and students! Please get in touch by sending me a message or a contract proposal. I am one of the top Tableau developers and data tutors here on Upwork. However, I'm not only a technical professional. I help with optimizing advertising strategies, communicating with end clients, offering recommendations, and making formal presentations. Please send an invitation or message and I will always respond by the end of the business day, but more likely within one hour. I have worked with clients in: Digital Advertising, ECommerce, Wealth Management, Aerospace Manufacturing and Software Development. In addition to Tableau, I have expertise working with: SQL, Google Ads, Google Analytics, PowerQuery, BigQuery, Tableau Data Prep, Epicor, Salesforce, Fishbowl, and several other data tools. I am formally educated from UC Davis with a BS in Managerial Economics, and data science coursework with UCLA Extension. I am reliable, responsive, and have a flexible schedule. I look forward to working with you!