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I build scalable Business Intelligence systems that leadership teams rely on. With 9+ years of experience across BI, data modeling, and data engineering, I help companies transform fragmented data into a clean, reliable source of truth — and turn it into executive-ready dashboards that drive real decisions. I don’t just build reports. I design the entire analytics foundation behind them. What I Specialize In Power BI Development • Executive dashboards & KPI reporting • Advanced DAX measures & calculation logic • Row-Level Security (RLS) implementation • Performance optimization (model + visuals) • Clean, scalable semantic models SQL & Data Modeling • Advanced SQL query optimization • Star schema & dimensional modeling • Large dataset performance tuning • Query refactoring for BI workloads Modern Data Stack • Snowflake data warehousing • Databricks-based data pipelines • ETL / ELT architecture design • Data transformation & automation How I Add Value • Build analytics-ready data models from messy raw data • Reduce manual reporting through automation • Improve dashboard load speed & reliability • Establish maintainable BI architecture (not quick fixes) • Validate metrics against source-of-truth systems I’ve worked with multi-source environments, large datasets, and fast-paced teams that require accurate reporting under tight deadlines. If you need someone who can own both the data layer and the BI layer — and deliver clarity, structure, and performance — let’s talk.

𝐌𝐢𝐜𝐫𝐨𝐬𝐨𝐟𝐭 𝐏𝐨𝐰𝐞𝐫 𝐁𝐈 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 // 𝐏𝐨𝐰𝐞𝐫 𝐁𝐈 𝐂𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐧𝐭 // 𝐄𝐱𝐞𝐜𝐮𝐭𝐢𝐯𝐞-𝐋𝐞𝐯𝐞𝐥 𝐃𝐚𝐬𝐡𝐛𝐨𝐚𝐫𝐝𝐬 I am Zeshan Ather, a Top 1% Expert-Vetted Professional on Upwork. Based in Silicon Valley, San Francisco, I bring over 11 years of experience in Data Analytics, Business Intelligence, and Data Science - including 9 years at Hewlett Packard Enterprise. With a Master’s in Computer Science (Data Science specialization, Software Development minor), I combine academic rigor with hands-on industry expertise to deliver enterprise-grade solutions. My career has been built on helping businesses unlock the full value of their data - whether through intuitive BI dashboards, scalable data pipelines, or AI/ML models that power predictive decision-making. 💡 What I Deliver: - Business Intelligence Dashboards: Power BI, Tableau, Qlik - executive dashboards, KPI tracking, drill-down analytics. - Data Engineering & Integration: ETL/ELT pipelines, SQL-based data modeling, Azure Synapse, Databricks, AWS Redshift, Snowflake. - Advanced Analytics & AI/ML: Forecasting, Churn Prediction, Recommendation Engines, NLP, Anomaly Detection, Predictive Maintenance. - Data Science Solutions: Machine Learning pipelines, Statistical Modeling, TensorFlow/Scikit-learn, Natural Language Processing, Experiment Design. - Cloud Data Platforms: Azure Data Factory, Azure Data Lake, Synapse Pipelines, AWS S3/Redshift, Snowflake, Delta Lake. - BI tools: Tableau/Tableau Server, Mode Analytics, Power BI, Oracle Hyperion, PowerPivot, PowerView, Looker, Mode, Sigma, Omni, Evidence - Database Platforms: SQL Server, MySQL, Amazon Redshift, Snowflake, Hadoop, Google Cloud, BigQuery, Postgres, Oracle, Supabase - SQL, Python, Hive, CMS integration, AWS - Agentic AI - Claude, Cursor 🔧 Technical Expertise: ✔️ BI Tools: Power BI, Tableau, QlikView, SSRS ✔️ Programming: Python, R, SQL, Scala, Spark, PSQL, DAX, MDX ✔️ Data Science: TensorFlow, PyTorch, Scikit-learn, Azure ML, NLP, Forecasting Models ✔️ Data Engineering: Azure Synapse, Data Factory, Databricks, Delta Lake, AWS Redshift, Snowflake ✔️ Databases: SQL Server, PostgreSQL, Vertica, MySQL ✔️ Modeling: Dimensional modeling, star/snowflake schemas, KPI frameworks ✔️ Security & Compliance: HIPAA, GDPR, PHI de-identification, RBAC, Row-Level Security 🌍 Trusted by Global Clients: - HPE (USA) - Data Analyst and Business Intelligence specialist - NHS (UK) – Healthcare dashboards & predictive models for patient outcomes. - Omni Tax Help (USA) – Sales analytics & forecasting models to improve client acquisition. - RealDefense (USA) – Product telemetry analytics + anomaly detection for cybersecurity products. - Inspire & Rozetree (USA) – Social media engagement analytics & automated campaign reporting. - MOTOR Magazine (USA) – Retail & operations analytics dashboards on AWS Redshift & Tableau. ✅ Why Work With Me: - 9+ years of end-to-end project delivery across BI, Data Science AI. - Strong communicator: making complex analytics clear to business leaders. - Proven success with 100% client satisfaction & 5★ reviews on Upwork. - Trusted by enterprises across healthcare, finance, marketing, retail, and cybersecurity. 👉 Whether you need BI dashboards, predictive ML models, or enterprise scale data pipelines, I deliver outcomes that move the needle for your business.

Top 3% of all Freelancers on Upwork. I build Power BI dashboards optimized for performance and scale, from traditional setups to advanced Microsoft Fabric and data model architectures. Specializing in: Real-time analytics, Power BI optimization and creation, SQL, Python, Fabric, and Azure. 6+ years delivering dashboards organizations actually use. I'm a Data Engineer, a Power BI and Microsoft Fabric specialist who builds data tools that are fast, scalable, and actually get used. What I Do: • Power BI development (semantic models, DAX, real-time dashboards) • Microsoft Fabric implementation (Lakehouse, Data Factory, Notebooks, Pipelines) • Data transformation and automation (SQL, Python) • AI-powered business workflow automation • Performance optimization for slow or bloated reports Results I've Delivered: • Automated manual reporting workflows that used to take entire days • Cut dashboard load times from minutes to seconds • Scaled datasets from 100K to 10M+ rows without performance loss • Built real-time monitoring to replace outdated static reports Specializations: • Healthcare (PACE, HIPAA, PHI, EHR, etc.) • Finance (P&L, AUM, Forecasting, etc.) My Approach: I always leave things better than I found them. That means proper data modeling, clean DAX, git workflows, and documentation your team can actually work with. Have a project in mind? Click "Invite" to start discussing today!

I have been working with clients to help solve their business analytics needs over the past twelve years. I am well versed in both Tableau and Power BI platforms. I have also developed solutions using SQL Server Reporting Services, SQL Server Integration Service, and SQL Server Analysis Services. I also specialize in ERP systems like Deltek Vision and Vantagepoint. I have a finance and accounting background to help translate business requirements into technical dashboards. Database Development: Microsoft SQL Server 2008/2012/2012/2016/2019 Microsoft Access Microsoft SQL Server Integration Services Microsoft Analysis Services Report Development: Power BI Tableau 10 Desktop and Server Microsoft SQL Server Reporting Services

I am a Business Intelligence Consultant with a specialization in Full Stack Microsoft Power BI Implementations. I have 3+ years of consulting experience implementing Power BI for dozens of clients in a diverse array of industries. As well as 8+ years working professionally with Power BI and it's underlying technologies. I have direct experience with requirements gathering, software integrations, ETL and Data Modeling, KPI and Measure Development, Data Visualizations, and Deployment to end-users. I can help you and/or your team institute best practices and ensure your Power BI implementation is set up right from the start or help you clean up a current implementation. • Microsoft Business Intelligence – 9+ years • Microsoft SQL Server – 4+ years • PowerBI/PowerPivots – 8 years • Azure Services – 2+ years • Advanced Microsoft Excel: VBA, Power Query, Power Pivot – 10+ years

Fractional Data Leader | Top Rated Plus | 100% Job Success | Founder, DataNicely You're running multiple locations, entities, or brands — and the numbers don't tie. Each property or rooftop reports a little differently. Someone on your team rebuilds the same spreadsheet every month. By the time leadership sees a number, it's three weeks old and nobody fully trusts it. That's the problem I solve: building the reporting layer underneath a business that grew faster than its systems. WHO I WORK WITH Operators running multiple locations, entities, or brands — property management portfolios, restaurant groups, multi-brand operators — and the advisory firms and PE sponsors behind them. Usually more systems than anyone planned for, often post-acquisition. If you need one dashboard built on data that's already clean, I'm more than you need. If your data lives in five systems and nobody can produce a number everyone believes, that's my work. WHAT I BUILD 1. Data infrastructure & BI — Ingestion from your operational systems (AppFolio, POS, ERP, CRM, scheduled exports, APIs), a real database layer, defined metrics, and Power BI / Tableau / Looker Studio reporting on top. Architected so a future API migration doesn't mean a rebuild. 2. Marketing & revenue analytics — GA4, GTM, Meta Pixel, and Conversions API implementation and cleanup. Attribution you can act on, tied back to operational and financial results instead of sitting in a silo. 3. AI automation — Automating the manual work that remains after reporting is fixed: reconciliation, matching, data entry between systems. Every automation ships with human approval gates, an error queue, fallback-to-manual, and an audit log. Nothing posts without your approval — and I don't deploy automations I don't maintain. RECENT WORK • Multi-brand media operator — architected ingestion of 8 brands' ad, subscription, and engagement data into BigQuery, replacing manual cross-brand reporting with one consolidated view. Built an AI layer on top of that clean data so their team can ask questions in plain language instead of queuing requests with an analyst. • Property management portfolios — AppFolio and operational data through automated ingestion into a reporting database and Power BI: occupancy, NOI by property, turn time, work-order backlog, days vacant. Designed so API migration doesn't mean a rebuild. • Multi-location restaurant group — marketing analytics and tracking infrastructure across 12 locations: GA4, GTM, Meta, and campaign attribution tied back to location-level performance. • Private equity value-creation firm — profit-by-customer analysis reconciling 2.08M transactions to the dollar, surfacing $0.6–1.1M in annually realizable margin. HOW I WORK I lead every engagement from architecture through delivery, with support from a vetted team working on dedicated, secured infrastructure. Your data stays in your environment. Everything is documented and transferable — architecture diagram, schema, data dictionary, metric definitions, source code, and a walkthrough. No black boxes, no dependency on me to keep it running. You own it. I work on a project or retained basis rather than by the hour. Most engagements open with a scoped first phase, so you see the work before committing to the rest. 13+ years in analytics and data engineering, including senior analytics roles in banking and financial services before founding DataNicely. If your reporting can't keep pace with your business, that's the problem I solve. Tell me what systems you're running and where the numbers break, and I'll tell you what I'd build.