Senior Software Engineer with 7+ years of experience leading development of full-stack systems, responsive UIs, cloud microservices, developer tools and libraries, scalable DevOps pipelines, real-time analytics platforms, and recent experience with AI-driven tooling and evaluation systems. Having served as a project lead responsible for defining client needs, architecting solutions, and managing development teams, I bring both strong technical depth and clear, consistent communication to every engagement. I approach problem solving as an active challenge of navigating resources, constraints, and objectives, always striving for outcomes that unite efficiency and elegance. This philosophy guides every aspect of my work, from system architecture to implementation details, ensuring solutions that are both practical and refined. I believe Competence and Communication are the foundations of a successful partnership. From requirements gathering to final delivery, I work closely with clients to understand their goals and translate them into high-quality, maintainable software solutions. Let's work together to bring your ideas to life.

I've been coding with PHP since late 2013 as well as MySQL, HTML and some JavaScript. I have spent a lot of time around WordPress, mostly adding posts and images, etc., but also backing up databases, making sites compatible with ssl, plugin and theme changes, etc. I currently manage six diverse websites and am very familiar with Git, Ftp, Xdebug, Phpmyadmin, virtual hosts, cPanel, Composer, etc. I have extensively used html-to-pdf and php-to-pdf libraries to automatically create different types of print-outs. I am trying to get more experience with Scala and have volunteered on a few (Scala) projects.

Work as tech lead & chief architect for a web company serving 4m+ users. Collect and store user behavior data & transaction data, perform daily and ad hoc ETL on the data, find useful pattern and provide BI visualization; design & develop server backend and providing apis to end users. Able to help a middle sized tech firm to setup OLAP(Online Analytical Processing) & OLTP(Online Transactional Processing) platform from zero. Has rich working experience in Spark, MongoDB, Fastapi, Clickhouse, Pandas, Numpy, Terraform, Agent development, AWS environment(Lambda, Athena, DynamoDB, Glue, EMR, Bedrock, Cognito, QuickSight, Sagemaker, etc). Rich coding experience in Python/Scala/Java. Rich experience in Machine Learning especially NLP. Can work as part-time job, 10~20 hours per week.

I am a seasoned Data Engineer with over 10 years of experience in designing and building scalable data solutions. I specialize in developing robust data pipelines across cloud platforms (AWS, GCP, Azure) and on-premise environments. Services Offered: ✅ Database Migration – Expertise in migrating databases such as BigQuery, Redshift, PostgreSQL, MySQL, and more. ✅ Data Warehouse Architecture – Designing efficient and scalable data warehouses tailored to business needs. ✅ ETL/ELT Development – Building ETL/ELT pipelines using Python Airbyte, DBT. ✅ Data Pipeline Architecture & Deployment – Implementing and automating workflows with Apache Airflow and Kubernetes. ✅ Application Containerization – Deploying and managing applications using Docker and Kubernetes. ✅ Data Visualization & Reporting – Creating interactive dashboards and reports with Looker Studio to drive business insights. Let’s discuss how I can help optimize your data infrastructure and unlock valuable insights for your business. Feel free to reach out!

Full stack engineer with experience in modern programming languages and technologies. Strong focus on modern back-end development, software architecture and cloud computing with AWS. Experience developing native mobile applications for Android and hybrid mobile development with React Native. Knowledge of automated deployment pipeline and web automation/scraping with Selenium and Puppeteer. I'm passionate about software development with more than 7 years on Upwork and 8000 hours. Strongest Skills: Functional programming, Scala, Java, Js/Typescript, SQL, Backend, Cloud development, RESTful APIs, WebServices, Observability, Frontend, Microservices and Serverless architecture, Security, SOC2. Technologies: Linux, Android, React, JPA, Scala, Slick, Akka, RabbitMQ, SBT, HTML5/CCS3, JSON, Play Framework, Reactive Mongo, Git, AWS Services, Ansible, Docker and Kubernetes.

Certified Data Engineer & Analyst | Turning Raw Data Into Business Impact I help companies build reliable, scalable data systems that actually drive decisions, not just dashboards nobody reads. With 4+ years of hands-on experience and certifications in [IBM / Google / AWS / Microsoft. I deliver end-to-end data solutions across the full stack: from ingestion to insight. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHAT SETS ME APART ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✅ Certified across multiple platforms (IBM, Google, AWS — [list yours]) ✅ Multi-cloud expertise: AWS, GCP & Azure — not just one ecosystem ✅ Full-stack data: I handle engineering, analytics, and ML in one engagement ✅ AI-ready pipelines: I build infrastructure that feeds LLMs and ML models correctly ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ CORE SERVICES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📦 Data Engineering & ETL Pipelines Design and build automated, fault-tolerant pipelines using Apache Kafka, Apache Airflow, and dbt. I handle batch and real-time streaming workflows — the kind that run at 3am without waking you up. ☁️ Cloud Data Architecture (AWS · GCP · Azure) From Redshift and BigQuery to Azure Synapse, I architect managed and serverless solutions that scale with your business and optimize your cloud spend. 📊 Data Analytics & Business Intelligence Turn siloed data into actionable dashboards using Power BI, Tableau, Looker Studio, and Grafana. Specializing in KPI frameworks, funnel analysis, and executive reporting. 🧠 Machine Learning & Predictive Analytics Build and deploy ML models (classification, regression, clustering, forecasting) using Python (scikit-learn, TensorFlow, PyTorch) — from training to production APIs. 🔍 Data Mining & Extraction Web scraping, API integration, and automated data collection pipelines. I extract value from unstructured sources and feed it into clean, queryable systems. 🗄️ Database Design & Optimization Proficient in MongoDB, MySQL, PostgreSQL, BigQuery, and Firebase. I design schemas for performance and build query-optimized data warehouses and data lakes. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ TECHNICAL STACK ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Languages → Python · SQL · Scala · R · Java · Terraform Pipelines → Apache Kafka · Apache Airflow · Docker · ETL/ELT Cloud → AWS (S3, Glue, Redshift, Lambda) · GCP (BigQuery, Dataflow) · Azure Synapse Databases → BigQuery · MongoDB · MySQL · PostgreSQL · Firebase BI & Viz → Power BI · Tableau · Looker Studio · Grafana · QuickSight · GA4 ML → scikit-learn · TensorFlow · PyTorch · Pandas · NumPy ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📜 CERTIFICATIONS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🎓 IBM Data Science Professional Certificate 🎓 Google Professional Data Engineer 🎓 AWS Certified Data Analytics – Specialty 🎓 Microsoft Azure Data Engineer Associate (DP-203) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ HOW I WORK ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ I ask the right questions before writing a single line of code. You'll always know where your project stands, no surprises, no ghost deliveries. I work well with both technical leads and non-technical stakeholders, and I document everything so your team can own what we build together. Message me with your data challenge | I typically respond within a few hours.

Getting things done start to finish, high complexity projects, diverse technologies, performance, reliability and quality. I have a track record of solving difficult problems and delivering complex cross functional software projects, deploying engineering solutions that benefit the entire organization, and defining key technical standards. I build, coach and support stellar teams while being hands-on and fully engaged in technical intricacies. Core specializations: - Complex distributed systems - design, architecture, quality control, maintenance strategies - Identity management, account security, financial compliance, KYC, data privacy - Large systems modernization and refactoring - Operations reliability, high availability/high performance services - Defining organizational standards, mentoring, tech hiring strategies Platforms and environments: - backend and full stack web development - high availability services and applications - cross platform mobile development Technology background: - software development: Java, Scala, Clojure, ClojureScript, Python, JavaScript, Dart, TypeScript, PHP - deployment and maintenance: Linux, FreeBSD, AWS, GCP, Grafana, Prometheus - databases: PostgreSQL, MySQL, Oracle, MongoDB, DynamoDB and others - mobile development: React Native, Flutter, native iOS apps

Prince John Wesley is an application developer with 17 years of full stack development experience. He is an enthusiastic programmer who likes functional programming paradigm. He is an open source enthusiast and Node.js core collaborator emeritus. Some of his more relevant skills are: Java, go, Javascript, Scala, Haskell, c, c++, elm, functional programming, node.js, Unix tools, regex, sed, awk... web frameworks like angular and react Open to any programming language(if it's a right choice for a given problem) & agile development Building mountOS - object storage based storage solution.

Skills and Expertise: ✅ Proficient in writing complex queries and optimizing database (SQL and NoSQL) performance. ✅ Experienced in Programming Languages such as Golang, Python and NodeJs Database: ✅ SQL Databases: Postgres, MySQL, MSSQL, and SQLite. ✅ NoSQL Databases: MongoDB, Redis, Elasticsearch, and DynamoDB. Cloud Data Pipeline: ✅ Proficient in GCP services: Bigquery and Looker Studio for data storage and analysis. ✅ Experienced in AWS services: Step Function, Lambda Function, Athena, EC2, ECS, Glue, S3, Iceberg, Redshift, and EMR Data Stack: ✅ Big Data Tools: Proficient in Spark, Kafka, and Flink for handling large-scale data processing. ✅ DBT (Data Build Tool): Skilled in DBT for transforming and modeling data. ✅ Airflow: Experienced in using Apache Airflow for orchestrating data workflows. ✅ Containerization: Familiar with Docker and Kubernetes for containerization and orchestration. ✅ Version Control: Proficient in Git, Gitlab, and GitHub for collaborative development and version control. Web Scraping/Automation: ✅ Proficient in web scraping using Scrapy, BeautifulSoup, Selenium, and Playwright. I am dedicated to delivering high-quality data solutions and ensuring data accuracy and reliability. With my extensive skill set and experience, I am confident in my ability to tackle complex data engineering challenges and provide valuable insights to clients. If you're looking for a data engineer who can streamline your data processes, create efficient data pipelines, and turn your data into actionable insights, feel free to contact me. Let's discuss how I can help you achieve your data goals.

Greetings! My name is Gary, and I am an expert software engineer and API integration specialist with over 7 years of experience building, optimizing, and maintaining advanced, scalable platforms. As a Top Rated Plus freelancer here on Upwork, you can rest assured that your project will be done correctly the first time around, with no corners cut. I develop only the best quality sites, plugins, and themes with code that is clean, efficient, and easy to maintain. I'll get straight to the point – primarily, my skillset includes: • Custom Software Development (Rust, Go, C++, PHP, and more) • Principal-Level Leadership/Guidance for Engineering Teams • Fully Custom WP Plugin and Theme Development (PHP, JS/TypeScript, HTML/CSS) • Shopify Plus Development (Custom Themes, Apps, and Extensions) • API Integration • Theme Installation and Setup • Plugin Installation and Setup • Single Sign-On (SSO) Implementation • Infrastructure, CI/CD, & DevOps (AWS, Cloudflare) • Microservices I have extensive experience and knowledge with Rust, C++, Liquid, PHP, JS/TypeScript, and of course, HTML and CSS. I'm very comfortable working with traditional SQL and NoSQL databases of all sizes to ensure secure and scalable performance. Don't hesitate to reach out if you're looking to kickstart or discuss an interesting project. I'm open to both direct contribution and consulting projects, as time allows. Thank you for your time!