Browse Freelancers
Postgresql
Expert in: PHP, MySQL, Laravel + 14 more
I'm Mihai Andrei Dumitrache, a results-driven Senior PHP Developer with 12 years of experience delivering high-performance web applications and e-commerce solutions. Over the last 8 years I’ve been with OSF Digital, working on enterprise-level projects. I’m an expert in the PHP ecosystem, MySQL, and scalable architectures, with a strong focus on Clean Code and solid OOP principles.
I’ve modernized development workflows by integrating AI-assisted engineering (Claude) to accelerate prototyping, optimize complex queries, and enhance code documentation. I value mentorship and a deep understanding of business logic, reinforced by a background in operations management, and I thrive in fast-paced environments where quality and delivery timelines are paramount.…I'm Mihai Andrei Dumitrache, a results-driven Senior PHP Developer with 12 years of experience delivering high-performance web applications and e-commerce solutions. Over the last 8 years I’ve been with OSF Digital, working on enterprise-level projects. I’m an expert in the PHP ecosystem, MySQL, and scalable architectures, with a strong focus on Clean Code and solid OOP principles.
I’ve modernized development workflows by integrating AI-assisted engineering (Claude) to accelerate prototyping, optimize complex queries, and enhance code documentation. I value mentorship and a deep understanding of business logic, reinforced by a background in operations management, and I thrive in fast-paced environments where quality and delivery timelines are paramount.WWWW…
More info Expert in: React Native, Laravel, MariaDB + 11 more
I have 6 years of experience as a Web Developer. I'm an expert in the PHP language with Laravel and Codeigniter frameworks. I'm also proficient in some databases like MySQL, MariaDB, PostgreSQL, and SQL Server. In front-end development, React JS has become my favorite language. And React Native for Android Development.…I have 6 years of experience as a Web Developer. I'm an expert in the PHP language with Laravel and Codeigniter frameworks. I'm also proficient in some databases like MySQL, MariaDB, PostgreSQL, and SQL Server. In front-end development, React JS has become my favorite language. And React Native for Android Development.WWWW…
More info Expert in: Python, Docker, JavaScript + 21 more
No BioMore info
Expert in: PHP, Ruby on Rails, Ruby + 69 more
🚀 AI/ML Engineer | Cloud & Software Developer | Generative AI Expert 🚀
With over a decade of hands-on experience, I specialize in AI solutions across industries. From machine learning and deep learning to cloud engineering and software development, I build intelligent systems that drive results. My goal is to leverage AI to help businesses innovate, streamline operations, and achieve data-driven success.
🌟 Key Areas of Expertise:
✅Artificial Intelligence & Machine Learning:
- Deep Learning: CNN, VGGNet, ResNet, YOLO, SSD, RCNN, Mask RCNN, GPT-3.5, GPT-4, Stable Diffusion
- Natural Language Processing (NLP): Sentiment Analysis, Text Segmentation, Chatbots, LLM Deployments (GPT-3, GPT-4, LLAMA-2), Prompt Engineering
- Computer Vision: Stable Diffusion, 3D Vision, Object Detection, Image Enhancement, Semantic Segmentation
✅Cloud & DevOps:
- Cloud Platforms: AWS, Google Cloud, Azure
- DevOps Expertise: MLOps pipelines with Docker, Kubernetes, CI/CD
✅Generative AI & Large Language Models (LLMs):
- OpenAI, Langchain, RunPod, HuggingFace for AI-driven applications like virtual assistants, content creation, and AI-powered designs.
✅Full-Stack Development:
- Python, Flutter, Flask, React, Django
- Database Management: MySQL, PostgreSQL, MongoDB
📈 Proven Success:
- AI-Powered Customer Service Chatbot: GPT-4, reduced response times by 40%.
- Computer Vision for Manufacturing: YOLOv10-based object detection system.
- Predictive Analytics for FinTech: LSTM-based models for financial forecasting.
🌟 Technologies I Use:
✅Python, Dart, C++, JavaScript, SQL
✅PyTorch, TensorFlow, Keras, Scikit-learn, OpenCV
✅AWS, GCP, Azure, RunPod
✅Docker, Kubernetes, Jenkins, MLflow
✅React, Flutter, Node.js, Flask, Django, FastAPI
🏆 Certifications:
- AWS Certified Machine Learning – Specialty
- Google Cloud Professional Machine Learning Engineer
- Deep Learning Specialization – Coursera
🚀 Let’s Turn Your Vision Into Reality! 🚀
If you're looking for a skilled AI engineer to elevate your business with AI-driven insights, let’s connect!…🚀 AI/ML Engineer | Cloud & Software Developer | Generative AI Expert 🚀
With over a decade of hands-on experience, I specialize in AI solutions across industries. From machine learning and deep learning to cloud engineering and software development, I build intelligent systems that drive results. My goal is to leverage AI to help businesses innovate, streamline operations, and achieve data-driven success.
🌟 Key Areas of Expertise:
✅Artificial Intelligence & Machine Learning:
- Deep Learning: CNN, VGGNet, ResNet, YOLO, SSD, RCNN, Mask RCNN, GPT-3.5, GPT-4, Stable Diffusion
- Natural Language Processing (NLP): Sentiment Analysis, Text Segmentation, Chatbots, LLM Deployments (GPT-3, GPT-4, LLAMA-2), Prompt Engineering
- Computer Vision: Stable Diffusion, 3D Vision, Object Detection, Image Enhancement, Semantic Segmentation
✅Cloud & DevOps:
- Cloud Platforms: AWS, Google Cloud, Azure
- DevOps Expertise: MLOps pipelines with Docker, Kubernetes, CI/CD
✅Generative AI & Large Language Models (LLMs):
- OpenAI, Langchain, RunPod, HuggingFace for AI-driven applications like virtual assistants, content creation, and AI-powered designs.
✅Full-Stack Development:
- Python, Flutter, Flask, React, Django
- Database Management: MySQL, PostgreSQL, MongoDB
📈 Proven Success:
- AI-Powered Customer Service Chatbot: GPT-4, reduced response times by 40%.
- Computer Vision for Manufacturing: YOLOv10-based object detection system.
- Predictive Analytics for FinTech: LSTM-based models for financial forecasting.
🌟 Technologies I Use:
✅Python, Dart, C++, JavaScript, SQL
✅PyTorch, TensorFlow, Keras, Scikit-learn, OpenCV
✅AWS, GCP, Azure, RunPod
✅Docker, Kubernetes, Jenkins, MLflow
✅React, Flutter, Node.js, Flask, Django, FastAPI
🏆 Certifications:
- AWS Certified Machine Learning – Specialty
- Google Cloud Professional Machine Learning Engineer
- Deep Learning Specialization – Coursera
🚀 Let’s Turn Your Vision Into Reality! 🚀
If you're looking for a skilled AI engineer to elevate your business with AI-driven insights, let’s connect!WWWW…
More info Expert in: JavaScript, WordPress, TypeScript + 20 more
I am a software engineer with over 8 years of experience in all aspects of the software application process, including customer requirements gathering, design, development, deployment, documentation creation, and support.
2 years of professional experience as a systems engineer. Installation and maintenance of electrical and network lines in residential buildings. Installation, maintenance, and repair of network and server equipment. Installation and maintenance of multi-platform software.…I am a software engineer with over 8 years of experience in all aspects of the software application process, including customer requirements gathering, design, development, deployment, documentation creation, and support.
2 years of professional experience as a systems engineer. Installation and maintenance of electrical and network lines in residential buildings. Installation, maintenance, and repair of network and server equipment. Installation and maintenance of multi-platform software.WWWW…
More info Expert in: MySQL, JavaScript, CSS + 11 more
I'm a Full Stack Developer with 5+ years building scalable enterprise systems for Manufacturing, Healthcare, and Retail across Indonesia and Singapore.
I specialize in Laravel, React, and Next.js with strong expertise in database optimization and high-load architecture. I'm experienced collaborating with global teams and delivering clean, maintainable, test-driven code.…I'm a Full Stack Developer with 5+ years building scalable enterprise systems for Manufacturing, Healthcare, and Retail across Indonesia and Singapore.
I specialize in Laravel, React, and Next.js with strong expertise in database optimization and high-load architecture. I'm experienced collaborating with global teams and delivering clean, maintainable, test-driven code.WWWW…
More info Expert in: Python, Django, Docker + 12 more
Hi, I'm Saim Ahmad, a software developer with 3 years of Python experience and a passion for building modular, scalable apps. I enjoy using Django, REST, and Docker to design robust backends and APIs, while embracing React on the frontend for full-stack solutions.
I'm pursuing a Master of Computer Science at the University of Paderborn, Germany. I thrive in collaborative teams and love turning ideas into polished, deployable software with a focus on API integration, asynchronous tasks, and scalable deployment.…Hi, I'm Saim Ahmad, a software developer with 3 years of Python experience and a passion for building modular, scalable apps. I enjoy using Django, REST, and Docker to design robust backends and APIs, while embracing React on the frontend for full-stack solutions.
I'm pursuing a Master of Computer Science at the University of Paderborn, Germany. I thrive in collaborative teams and love turning ideas into polished, deployable software with a focus on API integration, asynchronous tasks, and scalable deployment.WWWW…
More info Expert in: Python, JavaScript, TypeScript + 5 more
I'm a motivated junior full-stack developer with practical experience from commercial projects, university projects, hackathons, and coding competitions. I enjoy building end-to-end features, learning quickly, and collaborating in small teams to bring ideas into production. I also gain hands-on experience on projects under the mentorship of more experienced developers and through independent personal projects.
I'm currently completing my penultimate semester at the university and eager to apply problem-solving skills, experimentation, and a hands-on approach in a developer role. I like solving problems, breaking things, and then fixing them so they don't break.…I'm a motivated junior full-stack developer with practical experience from commercial projects, university projects, hackathons, and coding competitions. I enjoy building end-to-end features, learning quickly, and collaborating in small teams to bring ideas into production. I also gain hands-on experience on projects under the mentorship of more experienced developers and through independent personal projects.
I'm currently completing my penultimate semester at the university and eager to apply problem-solving skills, experimentation, and a hands-on approach in a developer role. I like solving problems, breaking things, and then fixing them so they don't break.WWWW…
More info Expert in: JavaScript, TypeScript, Node.js + 5 more
I’m a results-driven software engineer specializing in front-end and back-end development, automation, and integrations. I enjoy building reliable, scalable solutions that empower teams and users.
With a strong background in JavaScript/TypeScript, Node.js, React, and Python, I integrate third-party APIs, optimize data workflows, and contribute to production environments within cross-functional engineering teams. I value maintainability, reliability, and incremental delivery.…I’m a results-driven software engineer specializing in front-end and back-end development, automation, and integrations. I enjoy building reliable, scalable solutions that empower teams and users.
With a strong background in JavaScript/TypeScript, Node.js, React, and Python, I integrate third-party APIs, optimize data workflows, and contribute to production environments within cross-functional engineering teams. I value maintainability, reliability, and incremental delivery.WWWW…
More info Expert in: AI Chatbot, App Design, ChatGPT + 10 more
Hi I’m Adam.
I’m not your average consultant…
What makes me different?
- I can provide advanced tech AND advanced design AND business knowledge AND I’m a native English speaker. THERE’S NOT MANY OF US!
- I’ve built two advanced AI platforms (IIMAGINE AI and OneClickWorker - see more detail about them and other projects in my portfolio) that use the most advanced AI tech (see more below). SEE PROJECTS BELOW.
- I’m a business owner that knows what it’s like to hire freelancers. I spent $250K on Upwork as AS A CLIENT with 5 star reviews (look me up or see screenshot in my Upwork profile portfolio images).
- My TEDx talk about entrepreneurship has more than 1 million views. See it here https://www.youtube.com/watch?v=7npLVcymHGc
- I'm happy to work with a fixed budget and timeline to make sure your project is done on time and on budget.
Project 1
Name: OneClickWorker
Project type: SAAS platform
Industry: Recruitment platform
My role: I built the entire platform including all design
Unique technology and automation:
- Candidate applications are auto assessed by AI
- Auto shortlisted based on scoring by AI
- Emails are auto sent to shortlisted candidates to do an interview with an AI
- Auto generate transcript with AI, auto update candidates score with AI based on interview
- AI auto selects best candidate, auto send success message to successful candidate.
Recruiters can insert ‘human in the loop’ at any stage but it’s possible to hire without any human involvement!
MY POINT IS: I CAN AUTOMATE ANYTHING!
See video about it here: https://www.youtube.com/watch?v=Va1bPBbi1W0
Project 2
Name: IIMAGINE AI
Project type: SAAS platform
Industry: AI Startup Platform
My role: I built the entire platform including all design
Unique technology and automation:
- Users can use AI to create a stunning website with advanced features with ONE CLICK.
- I created proprietary algorithm that builds more advanced context, advanced similarity search, token budgeting, it allows the AI to provide personalized AI beyond the context window. WHY IS THIS SIGNIFICANT? Even ChatGPT memory can't remember everything about you. I believe my platform is the only platform in the world that has solved this difficult problem.
See video about it here: https://youtu.be/S97cF_7RM6Q
AI Expertise
Custom AI Engines
Retrieval-Augmented Generation (RAG), semantic search, and custom AI orchestration using OpenAI, Anthropic, and Google Gemini.
Deep Workflow Automation
I can do it with with simple automation tools like Zapier, Make, n8n or do it by building a custom web application.
Tech Stack
Frontend: Next.js, React, TypeScript, Tailwind CSS, Framer Motion, Radix UI, python and more.
Backend
PostgreSQL (Neon, Supabase), Custom REST APIs (50+ endpoints), AWS S3, and more.
AI/ML
OpenAI, ChatGPT, Anthropic, Gemini, LangChain, Vector Embeddings (pgvector), Prompt Engineering…Hi I’m Adam.
I’m not your average consultant…
What makes me different?
- I can provide advanced tech AND advanced design AND business knowledge AND I’m a native English speaker. THERE’S NOT MANY OF US!
- I’ve built two advanced AI platforms (IIMAGINE AI and OneClickWorker - see more detail about them and other projects in my portfolio) that use the most advanced AI tech (see more below). SEE PROJECTS BELOW.
- I’m a business owner that knows what it’s like to hire freelancers. I spent $250K on Upwork as AS A CLIENT with 5 star reviews (look me up or see screenshot in my Upwork profile portfolio images).
- My TEDx talk about entrepreneurship has more than 1 million views. See it here https://www.youtube.com/watch?v=7npLVcymHGc
- I'm happy to work with a fixed budget and timeline to make sure your project is done on time and on budget.
Project 1
Name: OneClickWorker
Project type: SAAS platform
Industry: Recruitment platform
My role: I built the entire platform including all design
Unique technology and automation:
- Candidate applications are auto assessed by AI
- Auto shortlisted based on scoring by AI
- Emails are auto sent to shortlisted candidates to do an interview with an AI
- Auto generate transcript with AI, auto update candidates score with AI based on interview
- AI auto selects best candidate, auto send success message to successful candidate.
Recruiters can insert ‘human in the loop’ at any stage but it’s possible to hire without any human involvement!
MY POINT IS: I CAN AUTOMATE ANYTHING!
See video about it here: https://www.youtube.com/watch?v=Va1bPBbi1W0
Project 2
Name: IIMAGINE AI
Project type: SAAS platform
Industry: AI Startup Platform
My role: I built the entire platform including all design
Unique technology and automation:
- Users can use AI to create a stunning website with advanced features with ONE CLICK.
- I created proprietary algorithm that builds more advanced context, advanced similarity search, token budgeting, it allows the AI to provide personalized AI beyond the context window. WHY IS THIS SIGNIFICANT? Even ChatGPT memory can't remember everything about you. I believe my platform is the only platform in the world that has solved this difficult problem.
See video about it here: https://youtu.be/S97cF_7RM6Q
AI Expertise
Custom AI Engines
Retrieval-Augmented Generation (RAG), semantic search, and custom AI orchestration using OpenAI, Anthropic, and Google Gemini.
Deep Workflow Automation
I can do it with with simple automation tools like Zapier, Make, n8n or do it by building a custom web application.
Tech Stack
Frontend: Next.js, React, TypeScript, Tailwind CSS, Framer Motion, Radix UI, python and more.
Backend
PostgreSQL (Neon, Supabase), Custom REST APIs (50+ endpoints), AWS S3, and more.
AI/ML
OpenAI, ChatGPT, Anthropic, Gemini, LangChain, Vector Embeddings (pgvector), Prompt EngineeringWWWW…
More info Expert in: 3D Model, AI Chatbot, AngularJS + 13 more
I'm a developer who specializes in providing end-to-end digital and tech solutions from building modern websites to immersive games, 3D models, and AI-powered systems.
With a background spanning web design, full-stack development, game development, and artificial intelligence, I bring a rare mix of technical depth and creative vision. I don’t just write code, I build products that are functional, visually engaging, and scalable for the future.
What sets me apart is my ability to bridge multiple domains:
As a Web Designer & Full Stack Developer, I deliver sleek, responsive interfaces backed by secure, efficient server logic.
As a Game Developer & 3D Modeler, I craft interactive experiences with realistic visuals, creativity and smooth performance.
As an AI Developer, I integrate automation, machine learning, and intelligent systems to give businesses a competitive edge.
Over the years, I’ve worked with startups, agencies, and established companies, helping them turn ideas into high-performing digital products. Clients trust me because I combine technical expertise, creative problem-solving, and clear communication ensuring their projects are delivered on time, with precision and care.
If you’re looking for a developer who can take on complex, cross-disciplinary projects and deliver results that truly stand out, message me now and let’s work together.…I'm a developer who specializes in providing end-to-end digital and tech solutions from building modern websites to immersive games, 3D models, and AI-powered systems.
With a background spanning web design, full-stack development, game development, and artificial intelligence, I bring a rare mix of technical depth and creative vision. I don’t just write code, I build products that are functional, visually engaging, and scalable for the future.
What sets me apart is my ability to bridge multiple domains:
As a Web Designer & Full Stack Developer, I deliver sleek, responsive interfaces backed by secure, efficient server logic.
As a Game Developer & 3D Modeler, I craft interactive experiences with realistic visuals, creativity and smooth performance.
As an AI Developer, I integrate automation, machine learning, and intelligent systems to give businesses a competitive edge.
Over the years, I’ve worked with startups, agencies, and established companies, helping them turn ideas into high-performing digital products. Clients trust me because I combine technical expertise, creative problem-solving, and clear communication ensuring their projects are delivered on time, with precision and care.
If you’re looking for a developer who can take on complex, cross-disciplinary projects and deliver results that truly stand out, message me now and let’s work together.WWWW…
More info Expert in: JavaScript, HTML5, Node.js + 9 more
Hi, I'm Djordje Zekovic, a Senior Software Engineer with 9+ years of professional experience in designing, building, and maintaining high-performance web and cloud-native applications. I love turning complex problems into clean, scalable solutions and collaborating with cross-functional teams to deliver impact.
I specialize in full-stack development using modern JavaScript/TypeScript stacks, React, Node.js, and cloud platforms. I enjoy mentoring teams, improving CI/CD pipelines, and delivering robust, scalable systems that drive product success.…Hi, I'm Djordje Zekovic, a Senior Software Engineer with 9+ years of professional experience in designing, building, and maintaining high-performance web and cloud-native applications. I love turning complex problems into clean, scalable solutions and collaborating with cross-functional teams to deliver impact.
I specialize in full-stack development using modern JavaScript/TypeScript stacks, React, Node.js, and cloud platforms. I enjoy mentoring teams, improving CI/CD pipelines, and delivering robust, scalable systems that drive product success.WWWW…
More info Expert in: MongoDB, TypeScript, Tailwind + 24 more
I am a backend engineer focused on designing scalable systems and optimizing performance for millions of users. I specialize in microservices, distributed architectures, and building robust APIs that scale under high load.
I have built AI-powered SaaS platforms, integrated with OpenAI, ElevenLabs, Twilio, and Stripe, and I have unified multiple AI microservices into efficient backends. I also deploy and manage AWS infrastructure and lead cross-functional teams to deliver product releases ahead of schedule.…I am a backend engineer focused on designing scalable systems and optimizing performance for millions of users. I specialize in microservices, distributed architectures, and building robust APIs that scale under high load.
I have built AI-powered SaaS platforms, integrated with OpenAI, ElevenLabs, Twilio, and Stripe, and I have unified multiple AI microservices into efficient backends. I also deploy and manage AWS infrastructure and lead cross-functional teams to deliver product releases ahead of schedule.WWWW…
More info Expert in: AWS, Python, Django + 8 more
I am a senior software engineer with over 20 years of IT experience, including 10+ years leading full-stack and backend engineering across fintech, SaaS, and trading domains. I specialize in Python, React/Next.js, and modern JavaScript (TypeScript, Node.js), and I design cloud-native architectures on AWS, GCP, and Azure. I build secure, API-driven platforms and intuitive user interfaces that are performant, scalable, and reliable, delivering business-critical solutions.
I enjoy guiding teams, mentoring developers, and establishing engineering best practices. My approach blends backend efficiency with polished UX, and I have a proven track record of large-scale re-platforming, data pipelines, and stakeholder alignment to drive real business value.…I am a senior software engineer with over 20 years of IT experience, including 10+ years leading full-stack and backend engineering across fintech, SaaS, and trading domains. I specialize in Python, React/Next.js, and modern JavaScript (TypeScript, Node.js), and I design cloud-native architectures on AWS, GCP, and Azure. I build secure, API-driven platforms and intuitive user interfaces that are performant, scalable, and reliable, delivering business-critical solutions.
I enjoy guiding teams, mentoring developers, and establishing engineering best practices. My approach blends backend efficiency with polished UX, and I have a proven track record of large-scale re-platforming, data pipelines, and stakeholder alignment to drive real business value.WWWW…
More info Expert in: HTML5, React JS, Tailwind + 10 more
https://blendemini.dev/…https://blendemini.dev/WWWW…
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