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Ray H.
Fredericton, Canada
Hello
I'm a full time freelancer living in Fredericton, New Brunswick, Canada. It's ok if you don't know where that is, not many people do.
I am passionate about giving you full access to your data and that gives you the insights needed to improve your business. The data world has grown faster than we've had the ability to consume it, and I'm here to help us catch up.
My recent work history includes four years of data strategy focusing on agile analytics and data visualizations. I am able to understand your data and present it to you in an appealing way to bring you the answers you need.
Further, I have seven years experience as a business analyst, bridging the gap between industry and technology to deliver successful IT projects.
My combined experience gives me the ability to quickly integrate into new teams, have a good understanding of the environment and provide value almost immediately.
You can take it from me, or you can take it from the feedback left to me below.
Let's start your next project!
Formal qualifications:
Bachelor of Computer science from the university of New Brunswick.
Tableau Certified Professional
APICS Certified Supply Chain Professional
- Data Visualization
- Tableau
- SQL
- Microsoft Excel
- Dashboard
- Microsoft Power BI
- Alteryx, Inc.
- Predictive Analytics
- Data Analysis
Sergei F.
Kobuleti, Georgia
Are you looking for _expert_ to design and build a software system? I'm professional, passionate and well motivated software engineer with over 10 years of production experience. When I'm taking an exciting project I'm not simply working on it - I'm living it ;)
* blockchain(solana), smart contracts in Rust
* rust && golang, have background experience in C++, C#, Java and others(I'm curious and always love to learn new things)
* rethinkdb, postgresql, clickhouse, apache cassandra/scylla, redis, elastic search
* heroku, aws(s3, sqs, kinesis, ec2)
* fundamental knowledge in data structures, algorithms complexity, networking, security && cryptography
* web comes as an addition in my skill set, but personally I'm much more interested in the back-end
I'm generalist with a broad area of knowledge, agile && fast learning. Personally I have high interest in the area of back-end development(high load, horizontal scaling) && software architecture.
My favorite technologies to use are rust, golang, redis - I know them in-and-out, my primary principles of any system design are
* _simplicity_ wherever possible - think before you introduce _any_ extra complexity, it should be well enough motivated(best code is an absence of code)
* _single responsibility_ - do one thing, but do it good
* _proven and reliable solutions_ instead of reinventing the wheel over and over again
I'm striving for exciting, cutting edge and challenging projects while building long-term relationships with my clients. You can always rely on me and my services - daily and in case of emergencies.
- Apache Cassandra
- Redis
- PostgreSQL
- Grafana
- Golang
- Amazon Web Services
- Heroku
- Blockchain Development
- Rust
- Blockchain
Manoj S.
Chandigarh, India
🧠 Over a decade of experience in full-stack development
🏆 38+ successful projects delivered on Upwork
⏱️ 8,400+ hours logged on Upwork
⭐ 100% client satisfaction with repeat clients and long-term partnerships
🔧 Specialized in Web, Mobile, and Hybrid app development
🏢 Experience across both corporate and startup environments
🛠️ Technical Expertise
• Frontend: React.js (Hooks, Redux, Context), Next.js, Tailwind CSS, TypeScript
• Backend: Node.js, Express, Python (FastAPI), MongoDB, PostgreSQL, REST & GraphQL
• AI & Automation: LangChain, OpenAI APIs, AI Agents, Serverless & Edge Functions
• DevOps & Tools: Docker, GitHub Actions, Vercel, Firebase, Supabase, OAuth
• Other: React Native, Electron, WebSockets, Stripe, UI/UX Design Systems
I help startups and enterprises turn complex ideas into smooth, scalable, and beautifully designed web and mobile applications.
I focus on building high-quality, future-ready products — from MVPs to complex platforms — with clean architecture, strong performance, and intuitive user experiences.
Let’s create something exceptional together.
- HTML5
- AngularJS
- ExpressJS
- jQuery
- Responsive Design
- CSS
- Redux
- Web Application
- webpack
- JavaScript
- Node.js
- React
- Sass
- TypeScript
- API Integration
Vignesh I.
Chennai, India
Seasoned data engineer with over 11 years of experience in building sophisticated and reliable ETL applications using Big Data and cloud stacks (Azure and AWS). TOP RATED PLUS . Collaborated with over 20 clients, accumulating more than 2000 hours on Upwork.
🏆 Expert in creating robust, scalable and cost-effective solutions using Big Data technologies for past 9 years.
🏆 The main areas of expertise are:
📍 Big data - Apache Spark, Spark Streaming, Hadoop, Kafka, Kafka Streams, Trino, HDFS, Hive, Solr, Airflow, Sqoop, NiFi, Flink
📍 AWS Cloud Services - AWS S3, AWS EC2, AWS Glue, AWS RedShift, AWS SQS, AWS RDS, AWS EMR
📍 Azure Cloud Services - Azure Data Factory, Azure Databricks, Azure HDInsights, Azure SQL
📍 Google Cloud Services - GCP DataProc
📍 Search Engine - Apache Solr
📍 NoSQL - HBase, Cassandra, MongoDB
📍 Platform - Data Warehousing, Data lake
📍 Visualization - Power BI
📍 Distributions - Cloudera
📍 DevOps - Jenkins
📍 Accelerators - Data Quality, Data Curation, Data Catalog
- Apache Cassandra
- Apache Spark
- Scala
- Apache Hadoop
- Big Data
- Apache Kafka
- Apache NiFi
- Apache Hive
- ETL Pipeline
- PySpark
- AWS Glue
- SQL
Avinash V.
Fremont, United States
I’m a full-stack developer and UI/UX Designer with over 15 years of experience in building high-performance, scalable, and AI-driven web and mobile applications. My passion lies in solving complex business challenges through innovative technology, whether it’s crafting pixel-perfect UI/UX, optimizing backend performance, or integrating cutting-edge AI and machine learning solutions.
I’ve successfully delivered several projects for startups, mid-sized businesses, and enterprises, many of which now generate millions in revenue. Recognized by Adobe and Google for my work, I’ve collaborated with global teams to create solutions that not only meet but exceed business goals.
My expertise extends beyond traditional development, I specialize in AI integration, machine learning models, and intelligent automation to future-proof your applications and deliver smarter, data-driven experiences.
Key Achievements
✅ Built an AI-powered eCommerce platform that processes $10M+ in annual transactions, featuring real-time inventory management, personalized AI-driven recommendations, and secure payment gateways.
✅ Developed a social networking app with 500K+ active users, incorporating live chat, push notifications, and an AI-curated interactive feed to boost engagement.
✅ Architected a FinTech solution that automates financial reporting, reducing manual work by 80% and improving compliance through AI-driven data analysis.
✅ Designed a real estate platform with AI-based property recommendations, virtual tours, and seamless buyer-seller connections, resulting in a 30% increase in user retention.
✅ Optimized an enterprise SaaS dashboard, improving performance by 60% and enhancing user engagement with advanced data visualization and AI-driven insights.
✅ Integrated machine learning models into IoT applications and chatbots, enabling smarter decision-making and automation for clients across industries.
Technical Expertise
1. Frontend Development:
- React.js & React Native (Mobile & Web)
- Angular, Ionic, HTML5, CSS3, JavaScript, TypeScript
- UI/UX & Responsive Web Design (Material UI, Bootstrap, SCSS)
2. Backend & Database
- Node.js, Express.js, PHP (Laravel), Python (Django, Flask)
- SQL & NoSQL Databases (MySQL, PostgreSQL, MongoDB, DynamoDB)
- RESTful APIs, GraphQL, Firebase
3. AI & Machine Learning
- AI/ML integration for predictive analytics, recommendation engines, and automation
- Natural Language Processing (NLP) for chatbots and voice assistants
- Data modeling and training for IoT and smart applications
4. eCommerce & CMS
- WordPress & WooCommerce, Magento 2, Shopify
- Custom eCommerce solutions with AI-driven personalization
5. Cloud & DevOps
- AWS (EC2, S3, RDS, Lambda), Docker, Kubernetes, CI/CD Pipelines
- Serverless Architecture & Scalable Cloud Solutions
Industries I’ve Transformed
✔ E-Commerce & Marketplaces – AI-driven platforms, Shopify, Magento, WooCommerce
✔ FinTech & Payment Solutions – Secure transactions, fraud detection, automated invoicing
✔ Healthcare & Telemedicine – HIPAA-compliant platforms, AI-powered appointment booking, patient records
✔ On-Demand Services – Food delivery, logistics, and ride-sharing applications
✔ Social Networking & Dating Apps – Scalable, real-time messaging with AI-curated content
✔ AI & IoT – Smart devices, automation, and machine learning integration
✔ SaaS & Enterprise Solutions – CRM, ERP, and workflow automation tools
Why Choose Me?
🔹 AI/ML Integration Expertise: I bring intelligent automation and data-driven insights to your projects, ensuring they stay ahead of the curve.
🔹 Proven Track Record: 100+ successful projects with high client satisfaction and measurable results.
🔹 User-Focused Design: Aesthetic, intuitive, and conversion-driven UI/UX that delights users.
🔹 Scalability & Performance: Solutions designed to grow with your business, handling millions of users effortlessly.
🔹 Reliable Communication: Transparent updates, seamless collaboration, and a commitment to your success.
Let’s Build the Future Together
I don’t just write code, I create innovative, future-proof solutions that solve real business challenges. Whether you need a scalable web or mobile app, AI-driven insights, or seamless integrations, I’m here to bring your vision to life.
📩 Send me a message today, and let’s discuss how we can transform your ideas into reality!
- UI/UX Prototyping
- UX & UI
- User Interface Design
- Web Design
- Wireframing
- Figma
- Journey Mapping
- Mobile App Design
- Full-Stack Development
- Web Application Development
- Python
- Next.js
- React Native
- AI Agent Development
- Mobile App Development
Jabran K.
Wake Forest, United States
✅ Rated TOP RATED PLUS, which means I am highly rated to work on large, complex projects. I earned this rating by looking out for my clients at every level of engagement, being a pleasure to work with and exceeding their expectations. Don't take my word for it, check out my glowing reviews! :)
✅ 100 percent success rating, because I never, ever leave my clients hanging!
✅ 25+ years of experience means my clients know they have an expert with deep knowledge on their side
✅ Multiple industry certifications: SQL Server Development Certified, SQL Server Administration Certified, AWS Certified, PMP and Agile certified. Which means I am aware of the latest tools, techniques and trends prevalent in the areas of software development and project management.
✅ Multiple skills: Senior DBA and developer, Senior database architect, SQL Performance Tuning expert, Deep Dynamic SQL Experience, SQL Server Migration Experience. This means you will have to hire fewer contractors to work with and spend less time coordinating activities for your project.
Here are some key skills I will bring to your projects:
⭐ Database Development and Design;
⭐ Theoretical knowledge and practical experience with design patterns;
⭐SQL complex Queries writing;
⭐ Queries Optimization;
⭐ Entity Relationship Diagrams;
Skill Sets:
🌟 SQL complex Queries writing
🌟 Queries Optimization
🌟 Database design
🌟 Entity Relationship Diagrams
🌟 Database migration through scripting
🌟 Stored Procedures
🌟 Views
🌟 Functions
🌟 Triggers
🌟 Indexes
🌟 Advanced SQL server features
🌟 Data import/Export
🌟 Database schema Design
🌟 Database Normalization/De Normalization
🌟 SSAS
🌟 Optimization
🌟 Database Modeling
I am a senior software developer with over 25+ years of development and management experience. I have deep knowledge of AWS and Databases and I am also well versed with Python. I have led multiple teams of developers successfully and PMP certified as a project manager. Communication is my forte!
- Data Migration
- Database Administration
- ETL
- Database Architecture
- Microsoft SQL Server
- Database Development
- Database Design
- Database Optimization
- Python
- Blog Writing
- Microsoft SQL SSAS
- SQL Programming
- Technical Writing
- Microsoft SQL Server Administration
- Amazon Web Services
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