🕘 𝟳+ 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 experience as a certified Ruby on Rails | Node | React | Full Stack Ruby on Rails development | Ruby 🏆 𝗨𝗽𝗪𝗼𝗿𝗸 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝟭𝟬𝟬% 𝗝𝗦𝗦 🥇 𝗠𝗼𝗿𝗲 𝘁𝗵𝗮𝗻 𝟭𝟮𝟬𝟬𝟬 𝗵𝗼𝘂𝗿𝘀 𝗼𝗳 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 🎯 𝟱𝟯 𝗷𝗼𝗯𝘀 𝗱𝗼𝗻𝗲 💲 $𝟰𝟬𝟬𝗸+ 𝗲𝗮𝗿𝗻𝗲𝗱 🔥 𝗙𝗨𝗟𝗟-𝗧𝗜𝗠𝗘 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 30+ hrs/week Hi! I’m Serhii, a Senior Ruby on Rails Node and React engineer and Full Stack Ruby on Rails and Node Developer with 7+ years of experience in scalable web architecture and product development. I also lead the Snotor software development agency. ✔️ 400+ projects with Ruby ✔️ 97% delivered on time ✔️ 60+ developers in my team ✔️ 15 years in business ✔️ Projects in 15+ countries (including the USA, Canada, UK, Norway, Sweden, Germany, Italy, France, Belgium, Switzerland, The Netherlands, Denmark, Latvia, Lithuania, Estonia, and Australia) I build high-performance applications using Ruby on Rails, Ruby, react, react node, laravel vue, php, java, python and modern cloud infrastructure. As a Full Stack Ruby on Rails expert, I handle backend (Rub, Ruby on Rails, levy, Node.js, Laravel, Symfony), frontend (React, Vue.js, Next.js), databases, DevOps, and scalable system architecture. Need MVP, SaaS, marketplace, or enterprise platform? I deliver clean code, clear communication, and reliable results. 💪 FinTech | HealthCare | LegalTech | EdTech | Marketing Let’s build something powerful together 🚀 Serhii

Do you have a challenging project? I can help you. All my Upwork projects for 9 years completed successfully! I architected and built successfully dozens of complex scientific and industrial projects and I support some of my long-term projects for years. Also, you’d find my open source projects on GitHub including someones which are used by Google Inc. and other corporations and universities. I'm an Experienced Data Scientist with a demonstrative history of working in the science and research industry. Skilled in Big and Spatial Data processing, Data Exploration, Data Analysis and Machine Learning. Strong engineering professional with a Master's degree in radio physics and electronics focused on nonlinear real world processes modeling from well-known Russian National Research University (UNN), also known as Lobachevsky University. 20+ years of practice in data science and programming engineering in a wide range of projects: from science research in computational physics to complex software products for the real-world problem solutions. Ask my clients about my data science and time management and communication skills: "Alexey completed a very complex and difficult geostatistical analysis in a very condensed time frame and generated exactly what we needed. Would highly recommend!" "Alexey completed this job effectively and very efficiently! His communication on coding plans and progress was fantastic, and he helped me to meet a tight deadline. I would be happy to work with him again in the future and I very highly recommend him to anyone considering hiring him!!" "Alexey was able to solve mathematically technically difficult project involving implementation of an optimizing algorithm. Did own research and made many valuable suggestions. A great job." "Alexey is a very talented resource. He was able to quickly understand our business problem and provide a working solution the FIRST time. There was no back and forth. He designed the solution to be future proof. Top notch guy!" "Alexey is a super developer. Very responsive and diligent. I truly enjoyed working with him and will hire him again and again." "Does what he says and does it on time. Very strong professional." "Alexey is a contractor of the highest calibre. He completed a large, highly complex project that four other contractors were unable to; completed it on time; and improved the project's initial goals, surpassing our expectations. Alexey was also very communicative throughout the project, and delivered before the deadline. I recommend Alexey without reservation, and look forward to working with him again." Software development and research areas: ✓ Scientific modeling, ✓ Geographical sciences, ✓ Large rasters processing, ✓ Topology analysis, ✓ Computer simulation methods, ✓ Graph algorithms, ✓ etc. Data stores: ✓ Classical SQL databases (PostgreSQL, SQLite), ✓ Spatial extensions for relational databases (PostGIS, Spatialite), ✓ Modern RDF databases (OpenLink Virtuoso), ✓ In-memory data structure stores (Redis), ✓ Science Big Data formats (NetCDF), ✓ Multiband GeoTiff files with spatial attributes, ✓ etc. Programming: ✓ Programming on C (shapelib, geoTIFF, gdal, spatialite, etc.), ✓ Programming on Python (Jupyter notebooks, numpy, pandas, scipy, xarray, gdal, etc.), ✓ Programming on SQL, PL/PgSQL, Tcl, shell scripting, etc., ✓ Unix/Linux/MacOSX development, ✓ etc. 2D/3D visualization: ✓ matplotlib, ✓ Cartopy, ✓ QGIS, ✓ VTK/Paraview, ✓ etc. And I develop Open Source Satellite Interferometry (InSAR) processor PyGMTSAR which is user-friendly and scalable parallel Big Data analysing system using state-of-the-art Machine Learning techniques. See on Google Colab, GitHub and DockerHub in Portfolio section. My book “PyGMTSAR: Sentinel-1 Python InSAR: An Introduction” is available on Amazon, Apple, Kobo and many other bookstores for students, researchers, or industry professionals.

GIS developer and Remote sensing professional with impressive academic qualifications and demonstrated skills and proficiency in geospatial data analysis, satellite image analysis, geo-statistics, cadastre, UAV mapping and imagery processing, and data visualization. The encouraging feedbacks from my past clients attest to my proficiency, integrity, and professionalism. ---------------------------------------------------------------------------- "Very knowledgeable, responsive and delivered as committed. Was a well-defined project in scope but very important to deliver with urgency and accuracy. I am completely pleased." - Rob. S. ________________________________________________________________ I have a background in Geoinformatics and surveying and 3 years of experience with the skills to turn geospatial data into quality information through geospatial analysis and produce visual representations to suit the need of different clients/industries. Software/Applications:  ESRI stacks (ArcGIS, ArcGIS Pro, ArcGIS Online, Story Maps, and Survey123)  QGIS  Google Earth Pro,  Pix4Dmapper  AutoCAD, Civil 3D  Skilled in Python, PostgreSQL, Html, and Microsoft tools. I am available for your geospatial analysis and cartography work.

I am a Quantitative Researcher. I have experience developing and backtesting algorithmic trading strategies, developing high performance trading bots, designing web applications for trading, building risk monitoring dashboards, crypto and stock screeners. THINGS I CAN HELP YOU WITH: - Backtesting algorithmic trading strategies - Optimization of algorithmic trading strategies - Development of cryptocurrency and forex trading bots - Trading strategy analysis and risk management - Integrating TradingView charting library - Custom trading terminal development - Crypto and stock screeners based on custom indicators - Monitoring dashboards - Financial Machine Learning and Data Science TECHNOLOGIES - Python - TimescaleDB, Postgres, MySQL, MSSQL, MongoDB, MariaDB - AWS - Docker - FIX Protocol - Rest API - Websockets #tradingview , #lightweight charts , #pinescript, #trading automation, #backtesting,, #Python, #Binance, #websockets, #API, #API integration, #financial machine learning, #dashboard development

I build and improve SaaS products, marketplaces, backend systems, and applied AI features for founders and product teams. Over the past 6+ years, I’ve helped scale a consumer platform to more than 1M users, built healthcare software supporting 6,000+ patients, and delivered real estate marketplace and AI-powered discovery products. I can take ownership of a product from architecture through deployment, or join an existing codebase to improve its performance, reliability, and maintainability. I can help with: • Full-stack applications using React, Next.js, Vue, Node.js, and FastAPI • REST and GraphQL APIs, authentication, payments, subscriptions, and integrations • RAG systems, AI search, personalization, agents, and workflow automation • Real-time features, notifications, search, caching, and background processing • PostgreSQL, MongoDB, Redis, Elasticsearch, and vector databases • Docker, AWS, GCP, CI/CD, and production deployment Recent work includes multimodal search, structured LLM workflows, geospatial property discovery, and Elasticsearch optimization that reduced search response times from approximately 5–6 seconds to 1–2 seconds. Send me the product, codebase, or technical problem you’re working on, and I’ll help identify the most practical way to build or improve it.

Machine Learning Engineer specializing in crop yield prediction, EO data, and scalable ML pipelines. I’m a Machine Learning Engineer specializing in building end-to-end data pipelines and predictive models for real-world applications, with strong experience in crop yield prediction, document intelligence, and multi-source data integration. I help clients turn complex, messy data into accurate predictions, automated systems, and scalable solutions. 🔹 What I do best: Build machine learning models (XGBoost, Random Forest, Deep Learning) Design data pipelines (ETL, preprocessing, feature engineering) Work with Earth Observation (EO) data (Sentinel-2, NDVI, EVI) Develop document AI systems (OCR, AWS Textract, structured data extraction) Deploy solutions using FastAPI, APIs, and production-ready workflows 🔹 Recent impactful work: Led crop yield prediction modeling using EO + environmental + ground truth data (ViSTA Data Sprint) Built AWB document processing systems extracting structured data with high accuracy Developed automated pipelines integrating OCR, validation, and DMS upload Designed ML deployment systems with API + dashboard integration 🔹 Advanced / Foundational Model Work: Worked with foundational EO models (e.g., Panoptic/Prithvi-style models) to generate rich imagery-based features aligned with ground truth agricultural data Extracted high-dimensional representations from satellite imagery to enhance crop yield prediction performance Integrated foundation model embeddings + environmental + EO features into ML pipelines for improved generalization Explored transfer learning approaches, reducing the need for training models from scratch 🔹 What you can expect: Clean, scalable, and production-ready solutions Strong problem-solving and attention to detail Clear communication and reliable delivery

I'm Megharaj Neupane, a Geospatial and Machine Learning Specialist with a Bachelor of Geomatics Engineering from Tribhuvan University. My skill set includes proficiency in C, C++, Python, JavaScript, React.js, MySQL, PostgreSQL, and Git. With a wealth of experience, I have tackled a wide array of projects, from creating Disaster Maps and Vicinity Maps to developing web portals for high-resolution satellite imagery access. I've employed cutting-edge techniques like U-net for river segmentation, building footprint prediction, and land cover classification. My innovation extends to detecting slums using deep learning and GIS, as well as applying super-resolution to enhance remotely sensed images. My dedication to precision and innovation sets me apart, making me a top choice for your geospatial and machine learning needs.

Profile Summary: I specialize in transforming complex data into actionable insights and building custom digital products, including full-stack web applications and WordPress solutions. With a strong foundation in Data Science and a wealth of experience in analytics, machine learning, and development, I unite technical prowess with clear communication. Data Expertise: End-to-end management of data pipelines: data cleaning, dataset structuring, and predictive modeling. Development of intuitive dashboards and visualizations for actionable stakeholder insights. Projects include real-time recommendation systems, time-series forecasting, and fine-tuned language models for low-resource languages. Full-Stack & WordPress Development: Skilled in creating comprehensive applications, from responsive frontends to robust backends, and adept in database design and deployment. Proficient in crafting dynamic WordPress sites, catering to both data-driven applications and user-friendly content management. Delivered geospatial platforms, interactive data visualization tools, and full-stack applications with active data integration. Highlighted Achievements: Engineered a cutting-edge computer vision system for automated fabric defect detection. Developed a culturally aware grammar correction model for Urdu, blending technical innovation and domain care. I am passionate about overcoming your data-related challenges, developing innovative products, or exploring and expanding your ideas. Let’s collaborate to turn your vision into a reality. Ready to tackle your next project? Let's build something impactful together.

Greetings and welcome to my profile! I’m a passionate GIS Specialist and CEO of Geovista Analytics, where we turn geospatial data into actionable insights. With over 200+ successfully delivered GIS projects, I lead a dedicated team offering advanced GIS, Remote Sensing, and environmental modeling services to clients worldwide. Let’s bring clarity to your spatial challenges and deliver impactful solutions. 👋 ---------------------------------- AREAS OF EXPERTISE---------------------------------- 🗺️ GIS & Spatial Analysis - Land Use/Land Cover (LULC) mapping & change detection - Terrain analysis, DEM processing, slope & aspect studies - Watershed & hydrological modeling (HEC-RAS, ArcHydro, SWAT) 🌐 Remote Sensing & Earth Observation - Sentinel, Landsat, UAV-based mapping - NDVI, SAR, and multispectral analysis - Environmental monitoring (NO2, PM2.5, temperature, rainfall) 🧠 GeoAI & Automation - Python scripting for geospatial workflows - Google Earth Engine (GEE) for large-scale RS tasks - Spatial SQL, PostGIS, and PostgreSQL integration 🖥️ Web GIS & Custom Maps - Web mapping (Mapbox, Leaflet, ArcGIS Online) - GeoServer setup and deployment - Interactive dashboards and visualizations ---------------------------------- CAREER CONTRIBUTIONS----------------------------------- ✅ 200+ Completed Projects and happy clients — Freelance & organizational ✅ Team-Based Approach — Skilled team at Geovista Analytics ✅ Research-Backed Methods — Published author on environmental & spatial studies ✅ Client Satisfaction — Timely delivery, custom solutions, long-term collaboration CERTIFICATIONS - Geospatial and Remote Sensing - Web GIS using Google Earth Engine and Machine Learning - Hazard and Risk Assessment - LIDAR - UAV in GIS - Arcgis Online - Geoserver - Postgres Work Methodology: # GIS # Remote Sensing # Vulnerability Assessment # GeoAI # LIDAR 📩 Let’s Collaborate! I will first understand your requirement and then propose you best solution possible. 👉 Message me now to get started with your project!

Expert in geospatial analysis and digital transformation, I specialize in harnessing Geographic Information Systems (GIS) and Building Information Modeling (BIM) to deliver innovative solutions. From designing advanced GIS platforms to creating 3D urban simulations, I transform complex spatial data into actionable insights that drive smarter decisions. My focus is on streamlining data management, optimizing urban planning strategies, and integrating geospatial intelligence to support high-impact decision-making. Let’s collaborate to make your projects more efficient, innovative, and future-ready. As a seasoned professional in remote sensing, environmental geomatics, and digital twins, I have developed cutting-edge solutions tailored to the unique challenges of smart cities and territorial monitoring. My work extends to crafting innovative approaches for sustainable development, bridging the gap between technology and strategic urban management. By leveraging advanced analytical tools, I provide actionable insights to address environmental, social, and infrastructural complexities. My approach is rooted in a deep understanding of territorial dynamics and a commitment to delivering impactful results. By combining technical acumen with practical experience, I drive projects that not only meet objectives but also enhance resilience and long-term sustainability. My expertise ensures the successful integration of digital solutions to transform territories into connected, efficient, and future-ready ecosystems. 𝗕𝗜𝗠 𝗗𝗲𝘀𝗶𝗴𝗻 𝗮𝗻𝗱 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁: 🔷 BIM Modeling and Coordination: Creating and managing detailed Building Information Models, ensuring precise collaboration between multidisciplinary teams. 🔷 Project Lifecycle Management: Overseeing all project phases, from planning and design to execution and maintenance, ensuring adherence to timelines and budgets. 🔷 Digital Twin Integration: Developing digital replicas of physical assets to support real-time monitoring, analysis, and lifecycle management. 🔷 BIM Standards and Protocols Implementation: Establishing and maintaining BIM standards, ensuring consistency and compliance across projects. 🔷 Construction Workflow Optimization: Streamlining workflows by integrating BIM tools and processes, enhancing efficiency and reducing project risks. 🔷 Interdisciplinary Collaboration: Facilitating communication and data sharing across architectural, engineering, and construction teams to achieve project goals. 🔷 Cost and Resource Management: Utilizing BIM tools to accurately estimate costs, allocate resources, and monitor project performance effectively. 𝗚𝗜𝗦 & 𝗚𝗘𝗢𝗦𝗣𝗔𝗧𝗜𝗔𝗟 𝗔𝗡𝗔𝗟𝗬𝗦𝗜𝗦 : 🔷 Interactive Mapping Solutions: Designing engaging and intuitive interactive maps that deliver actionable insights and improve user engagement. 🔷 Web GIS Development (2D & 3D): Developing advanced web-based GIS applications utilizing state-of-the-art technologies for geospatial data visualization and analysis. 🔷 Spatial Data Integration (ETL): Applying sophisticated methods to extract, transform, and load geospatial data, ensuring precision and efficiency in data workflows. 🔷 Advanced Data Visualization: Transforming complex spatial datasets into visually compelling formats to enhance understanding and facilitate decision-making. 🔷 Geospatial Data Conversion: Converting and reformatting spatial data to support seamless integration across diverse platforms and projection systems. 🔷 Spatial Analysis and Modeling: Performing comprehensive geospatial analyses to uncover patterns, model spatial relationships, and drive informed decisions. 🔷 Cartographic Design: Producing high-quality, visually striking maps tailored to effectively communicate spatial information. 𝗧𝗼𝗼𝗹𝘀 𝗮𝗻𝗱 𝗙𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸𝘀: 🔷 PostgreSQL/PostGIS: Expert in managing and analyzing geospatial data using spatial databases, enabling efficient storage, querying, and processing. 🔷 Cesium: Skilled in creating immersive 3D visualizations and interactive virtual globes for advanced geospatial applications. 🔷 GDAL/OGR: Proficient in geospatial data manipulation, conversion, and processing with the GDAL/OGR library. 🔷 QGIS/PyQGIS: Experienced in leveraging QGIS and Python scripting to automate geospatial workflows and develop customized plugins. 🔷 Leaflet.js, OpenLayers: Adept at implementing feature-rich, interactive web maps using leading JavaScript libraries for enhanced user experiences. 🔷 ReactJS: Competent in building responsive and dynamic user interfaces for web GIS applications, ensuring smooth interactions. 🔷 SpatiaLite/SQLite: Experienced in managing and analyzing geospatial data efficiently with lightweight spatial databases. 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗶𝗻𝗴 𝗟𝗮𝗻𝗴𝘂𝗮𝗴𝗲𝘀: 🔷 PHP (Laravel, CodeIgniter); C#; JavaScript; Python; HTML; CSS; SQL 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗶𝗻𝗴 𝗟𝗮𝗻𝗴𝘂𝗮𝗴𝗲𝘀: 🔷 LAS/LAZ; Shapefile; GeoJSON; GeoTIFF