Hire the Best R Shiny Freelancers
in Armenia

Top Rates Plus - awarded to the top 3% of Upwork freelancers! Experienced Senior Statistical Programmer with over 8 years of expertise in clinical trials and pharmaceutical research across therapeutic areas including oncology, cardiology, dermatology, gastroenterology, neurology, hematology, Real World Evidence (RWE), peptides and vaccines studies. Strong leadership capabilities in coordinating programming activities and timelines across multiple studies in phases I-IV. Dedicated to maintaining data integrity and supporting efficient clinical trial operations. Proficient in the development of statistical computing environments and serving as a clinical trials subject matter expert (SME) for software development companies supporting clinical research solutions. For a detailed overview of my hands-on responsibilities and real-world contributions, please refer to the Employment section, which outlines how this expertise has been applied across clinical trial development and pharmaceutical research projects. I hold Bachelor of Data Science degree from the American University of Armenia. My educational background, combined with hands-on experience, has equipped me with a robust skill set and a deep understanding of statistical methodologies and programming languages relevant to the clinical trials domain. My technical skills include proficiency in: SAS Programming (Advanced Level Certified, see in the 'Certifications' section): • Advanced SAS/BASE, SAS, SQL, SAS/MACRO, SAS/GRAPH, SAS/STAT, SAS/PROC, ODS output • SAS Viya (cloud version), Integration with R and Python, SAS Visual Analytics • Arrays, Hash Objects, Advanced Indexing, Memory Management • Handling large and complex datasets with efficient I/O and parallel processing techniques • Advanced macro writing, debugging and dynamic code generation, nested and recursive macros • Git/version control tools R Programming: • Clinical packages - pharmaverse, admiral, sdtmoak, tfrmt, gtsummary, PKNCA • Data manipulation and transformation - tidyverse, dplyr, tidyr, purrr, stringr, lubridate, tibble (implicit), readr (implicit) • Data visualization - ggplot2, plotly, gtsummary (dual-purpose), gt, flextable, patchwork, cowplot • High-quality analytical reports - rmarkdown, knitr, quarto • Interactive dashboards and applications using R Shiny Python Programming: • Python core (data types, control flow, functions, modules), NumPy, pandas, SciPy. • Clinical data processing with pandas (joins, reshaping, group summaries, derivations comparable to SDTM/ADaM workflows). • Integration with SAS and R (reading/writing SAS datasets via pyreadstat, interoperability for QC and validation). • Data visualization and reporting (matplotlib, seaborn, Excel/CSV outputs, automated report generation). • Advanced data handling (vectorization, memory optimization, chunked processing, handling large datasets). • Statistical analysis in Python (descriptive statistics, hypothesis testing, regression, survival analysis using lifelines). • Validation and quality control frameworks (independent QC of SAS outputs, data consistency checks, audit-friendly logs). • Unit testing and code quality (pytest, structured logging, reproducible environments). • Metadata and XML processing (Define-XML handling, CDISC metadata validation using xml/lxml). Power BI & Business Intelligence: • Design and development of interactive Power BI dashboards for exploratory and operational analytics • Data modeling using Power BI semantic models, relationships, and star-schema concepts • Data transformation and preparation using Power Query (M language) • KPI development, filters, drill-downs, and slicers for executive-ready reporting • Integration with multiple data sources (CSV, Excel, SQL databases, APIs) • Performance optimization for large datasets (model size, relationships, DAX efficiency) • Secure sharing and collaboration using Power BI Service Project Management: Working with Jira, Scrum, GitHub Microsoft Office tools: Microsoft Word, Excel, PowerPoint, Access, Outlook Driven by a passion for continuous learning and a collaborative spirit, I am known for my easy-going demeanor and my ability to thrive in team environments within the clinical trials field. I approach each project with dedication and attention to detail, consistently delivering results that exceed expectations and contribute to the advancement of clinical research.

About me: • Expert User of Tableau Desktop and Tableau Server • Proficient with MS Excel (PowerPivot, Power Query, Pivot Table, Macros/VBA) • Experience working with other BI tools (Power BI, Fine BI, Excel Data Visualization) • Confidence in writing SQL queries and in Python(Pandas, NumPy) for data manipulation and analysis • Chemist I take my job seriously, I pay attention to details and work fast ! If you want your project be done quickly and carefully, then you are WELCOME ! Hope to work with you soon! Thank you

My name is Samvel, and I help my clients make confident decisions with my powerful insights. Qualifications: For a year now, I have been practicing and learning data analytics to help you gain a competitive edge in your business. During my career, I completed a 6-month Google Data Analytics Professional Certificate that included 8 courses, which made me proficient in tools like Excel, Google Spreadsheets, MySQL, BigQuery, R, Tableau, and Power BI. Why hire me: ✅ I am a detail-oriented specialist who will go above and beyond to ensure your project's success. ✅ I respond within 1 hour to any technical issues or questions to ensure that my clients have the best experience with me. Here’s how I will help you: 🧹 Data Cleaning: Turning raw data into analysis-ready datasets to ensure the quality and integrity of your data. 📊 Data Analysis: Uncovering trends and insights using SQL, Excel, and R to find the secrets of the data. 📈 Data Visualization: Building clear, compelling dashboards with Power BI, Tableau, and R to effectively communicate my findings to you and help you make the right decisions. Next steps to work with me: -Shoot me a message or book a short call with me so we can discuss your project and what your business needs.

Data Science and Machine Learning Expert for Hire Are you ready to unlock the full potential of your data? Let's collaborate and turn your data into powerful insights! Services I Offer: Data Analysis & Insights: Struggling to make sense of your data? I’ll conduct in-depth analysis to extract actionable insights that drive decision-making. Predictive Modeling & Machine Learning: Need to build robust models? I leverage advanced machine learning techniques to create predictive models tailored to your specific goals. Data Visualization: Want to tell a compelling story with your data? I create visually engaging and insightful dashboards using tools like R Shiny, ggplot2, and Power BI. Statistical Analysis: Looking for reliable statistical insights? I apply hypothesis testing, regression, and time series analysis to extract meaningful patterns and trends from your data. Clinical Data Science: Working in healthcare? With experience in clinical data science, I can help you uncover trends and improve patient outcomes using data-driven approaches. Teaching & Academic Research: Need expert help in research methods or economics? As a Teaching Associate at AUA, I can provide guidance in research methods, applied statistics, and microeconomics. Why Choose Me? Expertise: With a MicroMasters in Data Science from MIT, a Master’s in Economics, and experience as a Data Scientist, Machine Learning Engineer, and Clinical Data Analyst, I bring a wealth of knowledge and real-world experience to your project. Customized Solutions: I understand that every project is unique. I tailor my services to meet your specific needs and ensure the best results. Results-Driven: My focus is on delivering high-quality, impactful results that meet your project’s objectives. Timely Delivery: I know how important deadlines are, and I ensure that your project is completed on time, every time. Ready to take your data-driven project to the next level? Let’s connect and discuss how I can help you achieve your goals!