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United Kingdom
$30/hr
$10K+ earned
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I am a .NET developer experienced in building enterprise-level SaaS, event-driven based systems. I have over 20 years of experience in the industry and have worked with large organisations.
$85/hr
100%
Job Success
$100K+ earned
Available now
Offers consultations
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I work with ambitious innovators and entrepreneurs to design, prototype and build AI powered applications, fast.
After leading the AI solutions engineering team at a Silicon Valley AI Startup, backed by Google Ventures, I know how to take your vision and turn it into AI solutions that result in real profits.
After working in development for 10 years, I’ve seen 3 problems with how other providers typically run projects...
1. They overwhelm clients with technical jargon
2. They say "yes" to everything, over-promise, under deliver and overrun
3. They delay projects by focusing on shiny objects instead of real business results
When this happens:
- Projects take way longer than planned
- Projects cost way more than quoted
- Time is wasted on alignment
In reality, finding a partner with the end to end practical experience needed to design and launch AI products is harder than you’d think...
But, when your AI project succeeds the pay off is immense
I've seen it first hand...
Here's a few reasons that I'm the right person to turn your great idea into an roaring success:
✅ Top 1% on Upwork as a Top-Rated Plus and Expert Vetted Freelancer
✅ 9+ Years in Full Stack Mobile and Web Development
✅ Helped 26+ Businesses Scale with my Solutions
✅ Google Ventures Startup Experience: 2+ Years of Cutting-Edge AI Work
✅ IBM Certified Expertise in Enterprise Design Thinking
✅ London Based
And here's some practical examples of the outcomes my solutions have achieved:
The last startup I was at raised over $50m from Google and Sequoia and was valued at $400m.
They just got bought by Steve Wozniak's company (Apple co-Founder)
Since then I have:
+ Helped 2 startups raise 7-figures with clickable web app prototypes
+ Built an entire warehouse management platform for a US logistics company expanding to Europe. It syncs with their US operations and shipping providers
+ Prototyped an app for Canada's leading security tech company. They used it to land the biggest contract in company history. Then, I built them a full stack web application to visualise 1.8m crimes
+ Built a web app for a Supermajor energy trading team to monitor 136 petrochemical sites with connected car data and alert them to shutdowns that would move commodity prices
+ Developed an AI pipeline to detect deforestation across the whole of Indonesia (1.9m sqkm) for the worlds biggest CPG company
+ Developed a web app for an industrial insurance company to analyse thousands of invoices using OCR and a fine tuned AI model, freeing up 200+ hours per claim
+ Built a web MVP for a startup that uses gen AI to create thousands of personalised videos with AI avatars in multiple languages
+ Engineered a PDF AI extraction internal web platform for a US real estate law firm. Freeing them time to focus on more important tasks
+ Worked with a Japanese Bank to develop an application using cellular footfall data and financial inputs, to optimise how much cash to leave in US ATMs
+ Built an app for a London property company that automated their legal letter generation and streamlined surveys saving 60+ hours per week
And, there’s more. Lots more...
Feel free to have a look at my case studies and customer reviews below.
With 10 years in engineering, and 2.5 years leading the AI solutions engineering team at a Google Ventures startup...
I've delivered multi-million dollar projects for Fortune 500 companies
So, why does this matter for your project?
I know how to turn your idea into a functional AI application, fast.
This means you get a solution that works
In the shortest time possible
Without any surprises
Plus, I bring industry leading Silicon Valley expertise to your team
What's more, I can prototype your idea in just 5 days...
Why?
Because nothing helps you get buy-in, investment and your first customers like a beautifully crafted, clickable prototype
Here is how I work with clients:
1. You get hours of research before I even give you a proposal
2. You get access to top silicon valley talent, immediately
3. You get business results, fast
Typically the first step is a quick call
In the call we'll talk through your project goals and some discovery questions
After the call, I'll give you a full project plan, scope and timelines and you can decide if you want to move forward
If you're interested, let me know and I will share my calendar to find a time that works for us to meet.
Alistair D.
has worked
.
$45/hr
$2K+ earned
Available now
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🏅 35+ Professional Certifications
📅 Open to meetings
📍 Belfast, United Kingdom
💬 Fast, Clear Communication
Hello, I’m Tadiyos, a results-driven Full-Stack Developer and AI-oriented Engineer with 10 years of experience specializing in building high-performance, scalable, and intelligent web applications.
I have extensive experience designing and developing end-to-end solutions, from modern, responsive user interfaces to robust backend systems and data-driven features. I focus on writing clean, maintainable code and delivering products that are fast, secure, and built to scale.
I ensure every project functions flawlessly across all devices and browsers, with careful attention to performance, usability, and long-term maintainability. I’m known for my reliability, clear communication, and strong ownership mindset-responding within 24 hours and taking full responsibility for each project from start to successful completion.
I bring a no-excuse, solution-oriented attitude, a friendly and professional approach, and a strong commitment to client satisfaction. My goal is not just to build websites, but to create powerful digital solutions that add real business value.
💡 My main skills
✔ JavaScript, TypeScript, PHP, HTML5, CSS3, Tailwind CSS
✔ React, Next.js, Vue.js, NuxtJs, Angular
✔ Node.js, ExpressJs, Laravel, Django, Spring Boot
✔ WordPress, Shopify
✔ Database: MySQL, PosgreSQL, MongoDB(Mongoose), Neo4j
🤖 AI & Data Science Skills
✔ Artificial Intelligence & Machine Learning fundamentals
✔ Spatiotemporal Data Mining
• Time-series anomaly & outlier detection
• Classification, clustering, and forecasting
✔ Data preprocessing, feature engineering, and model evaluation
✔ AI-powered backend integration (Python-based services)
✔ Web scraping and data extraction for AI/ML pipelines
✔ Building intelligent, data-driven web applications
🛠️ Tools & Platforms
Git, GitHub, GitLab, Bitbucket, Docker, CI/CD(GitHub Actions, Gitlab CI), AWS(EC2, S2 - basic usage), Firebase(Auth, Firestore, Hosting), Vercel, Netlify, DigitalOcean, Postman, Swagger, VS Code, IntelliJ IDEA
In addition to the full-stack development skill, I have a number of different skills and experiences, enabling me to do more than one kind of project. Here to mention few skills:
• Spatiotemporal Data Mining (Time series anomaly/outlier detection, classification, clustering, and forecasting)
• Web Scraping
• Android App Development
I can guarantee:
• Fast response and good communication skills
• Great attention to detail and problem-solving skills
• Testing and cross-browser compatibility
I will take personal charge of your projects until you are completely satisfied with the result. Furthermore, I will always provide a kind and courteous service to my clients.
For more, I invite you to visit my portfolio website to walk through my academic achievements and awards I honored during my academic study. Link attached in the bottom of this page (under the "Other Experiences" category)
If you are looking for a self-motivated, experienced and talented developer, please contact me.
Regards,
Tadiyos
$30/hr
100%
Job Success
$4K+ earned
Available now
Offers consultations
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Organised, Trustworthy and Passionate Software Engineer with almost 20 years experience building highly scalable Web Applications.
Grown from Junior Developer to Team Leader as permanent employee within big and small Organisations, I faced all the steps of the SDLC and the challenges of working cross teams, startup environments, obsolete code, customer technical support, hardware replacement, solo developer, release manager.
Below a list of skills and services I provide:
- Microservices
- Old school Monolithic web apps
- Troubleshooting and bug fixing
- Infrastructure Design and Setup from basic to highly scalable systems
- Requirements gathering and Kanban Board management
- Team and Project management using Agile methodologies
- Coding at night to reach the deadline
I'm very looking forward to helping your business grow.
Your success is my success, get in touch!
$18/hr
92%
Job Success
$100K+ earned
Available now
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Most mobile apps fail because they become slow to maintain, difficult to scale, or never deliver the user experience the business expected.
I help startups, SaaS companies, and growing businesses build React Native and Flutter applications that are fast, scalable, and built for long-term growth. Whether you're launching an MVP, modernizing an existing app, or adding AI capabilities, I focus on building products that users enjoy and businesses can confidently scale.
Over the past 10+ years, I've delivered cross-platform mobile applications across healthcare, fitness, fintech, eCommerce, education, AI, and on-demand services—from concept and UI implementation to backend integrations, deployment, and ongoing product improvements.
AI Development Expertise:
AI is now a core part of the products I build not just an add-on.
I've developed AI-powered applications using Claude, OpenAI, Gemini, and other LLMs, including:
• AI Chatbots & Virtual Assistants
• AI Search & Knowledge Base Systems
• Document Analysis & Summarization
• Workflow & Business Process Automation
• AI Content Generation Features
• Intelligent Recommendation Systems
• Custom AI Integrations for Mobile Apps
To deliver projects faster without sacrificing quality, I also use modern AI engineering tools like Claude, Cursor, ChatGPT, and GitHub Copilot for research, debugging, testing, documentation, and code optimization.
Services
▪ React Native App Development
▪ Flutter App Development
▪ Cross-Platform iOS & Android Apps
▪ AI-Powered Mobile Applications
▪ Claude AI, OpenAI & Gemini Integration
▪ SaaS & Startup MVP Development
▪ Firebase & Supabase Development
▪ REST API & Third-Party Integrations
▪ App Performance Optimization
▪ App Maintenance & Feature Development
▪ App Store & Google Play Deploymentt
Why clients hire me
• 10+ years of professional experience
• Clean, scalable, production-ready code
• Strong focus on performance and user experience
• Transparent communication throughout the project
• Reliable delivery and long-term support
• Business-first approach not just development
If you're looking for a developer who can build a high-quality mobile application, integrate modern AI capabilities, and take ownership from planning to launch, let's discuss your project.
Keywords: React Native Developer, Flutter Developer, Mobile App Developer, AI App Developer, Claude AI, OpenAI API, Gemini API, LLM Integration, AI Chatbot Development, Cross-Platform Apps, iOS App Development, Android App Development, Firebase, Supabase, SaaS Development, MVP Development.
Ankit G.
has worked
.
Associated with
TECOCRAFT
United Kingdom
$40/hr
$5K+ earned
Offers consultations
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I am a Senior Software Engineer have experienced in multiple languages like Python, Nodejs, Golang Build Microservices Distributed system. Have the capability of handling billion over request services with highly scalable containerized backend with cutting edge technologies.
I have Strong Experience in:
✅ Python, FastAPI, Flask, Golang, TypeScript, Pandas
✅ Django, Django Rest Framework, DRF, Django-channels
✅ LangChain, Pinecone, FAISS, GPT-4, Claude, LangGraph
✅ Scrapy, Selenium, BeautifulSoup, Playwright/Splash
✅ MySQL, PostgreSQL, NoSQL, MongoDB, Graph Database
✅ AWS, DigitalOcean, GCP
✅ Scalable Deployment and Management
✅ Postman, Docker, API Management
✅ Testing
I understand that you come to me with specific needs and goals in mind, and my job is to help you achieve those goals.
🟢 It's improving the user experience
🟢 Increasing traffic and sales
🟢 Creating your unique brand identity
🟢 Bug with Existing Application
If you think for need a billion requests to handle applications like Rocket Fuel, Eskimi, etc I can make the same solutions for your business based on your requirement.
$30/hr
100%
Job Success
$10K+ earned
Start of list.
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As a seasoned Full Stack Developer with extensive experience in building robust web applications, I specialize in leveraging modern technologies such as React, Node.js, C#, .NET, ASP.NET, MVC, Blazor, and RESTful APIs. My passion for coding and problem-solving drives me to deliver high-quality solutions that meet client needs and exceed expectations.
With a strong foundation in both front-end and back-end development, I have successfully completed numerous projects that involve:
React: Crafting dynamic and responsive user interfaces that enhance user experience and engagement.
Node.js: Developing scalable server-side applications that handle high traffic and complex data processing.
C# and .NET: Utilizing the power of the .NET framework to build secure and efficient applications, ensuring seamless integration with various services.
ASP.NET and MVC: Implementing robust web applications using the MVC architecture, promoting clean code and maintainability.
Blazor: Creating interactive web applications with C# instead of JavaScript, allowing for a more unified development experience.
RESTful APIs: Designing and developing RESTful services that facilitate smooth communication between client and server, ensuring data integrity and performance.
I am committed to continuous learning and staying updated with the latest industry trends, which allows me to provide innovative solutions tailored to your specific requirements. My goal is to help you bring your vision to life through effective collaboration and transparent communication.
Let’s work together to create something amazing!
United Kingdom
$25/hr
100%
Job Success
$100+ earned
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AI Developer & SaaS Architect | Full Stack Developer focused on building AI solutions & SaaS MVPs. I have strong skills as a Senior Software Engineer, Nodejs, Nestjs FastAPI Developer, and React Developer.
I help founders, startups, and small businesses build practical AI-powered web applications, SaaS MVPs, automation tools, and full-stack products using Nodejs, Python, React, Next.js, FastAPI, Nest.js, and modern AI APIs.
I may be new to Upwork, but I am not new to building. I have hands-on experience developing full-stack applications, AI-assisted workflows, dashboards, backend APIs, and production-minded web platforms. My focus is simple, understand your idea clearly, build the right first version, and help you move from concept to a working product.
What I Do
I can help you with
SaaS MVP development from idea to launch
AI app development and AI API integration
OpenAI, LangChain, RAG, chatbot, and agent-style workflows
Full-stack web apps using React, Next.js, Python, FastAPI, Node.js, and Supabase
Backend APIs, dashboards, authentication, databases, and deployment
Automation tools that save time and reduce manual work
Clean frontend interfaces with responsive UI and modern UX
AI & SaaS Development
I build AI-powered software that is useful, not just flashy. Whether you need a chatbot, document workflow, internal tool, AI assistant, or SaaS dashboard, I can help design and develop the product end-to-end.
Areas I work with include
OpenAI API and LLM integrations
RAG pipelines and document-based AI assistants
AI automation and workflow tools
SaaS dashboards and admin panels
Multi-user web applications
Authentication, roles, and database-backed systems
API design and backend logic
Full Stack Development
I work across the frontend, backend, database, and deployment layers, which means you do not need to manage multiple developers for an MVP.
My core stack includes
Frontend: React, Next.js, JavaScript, TypeScript, Tailwind CSS
Backend: Python, FastAPI, Django, Node.js
Databases: PostgreSQL, Supabase, Redis, Firebase
AI Tools: OpenAI, LangChain, vector databases, prompt engineering
Deployment: Vercel, Docker, cloud platforms, CI/CD basics
Other: REST APIs, GraphQL, WebSockets, SaaS architecture
How I Work
I work best with clients who want clear communication and steady execution. I can help you shape the product, choose the right tech stack, avoid unnecessary complexity, and build something that can grow beyond the first version.
My approach is
Clear scoping before development starts
Fast MVP delivery with clean architecture
Regular updates and honest communication
Practical technical decisions
Code that is maintainable and easy to extend
A product-focused mindset, not just task completion
Why Work With Me
Because I care about the result, not just the code. I think like a technical partner, I ask the right questions, suggest better options when needed, and focus on helping you get a working product into users’ hands.
I am especially a good fit if you need
An AI developer who also understands full-stack product development
A web developer who can build both frontend and backend
A Python/React developer for SaaS, dashboards, and automation
Someone who can turn a rough idea into a real working MVP
Background
I have a strong background in AI, data science, and full-stack software development, with experience building real-world projects across web applications, AI tools, automation systems, and SaaS-style platforms.
I am continuously improving my craft and using modern AI-assisted development tools to work faster while keeping quality high.
Let’s Work Together
If you are building an AI product, SaaS MVP, automation tool, dashboard, or full-stack web application, send me a message. I would be happy to understand your idea and help you turn it into a working product.
United Kingdom
$35/hr
100%
Job Success
$30K+ earned
Start of list.
End of list.
Hey! I'm Omari, I'm a passionate, hardworking, experienced web developer. With 5+ years of experience as a React developer, I've built everything from robust, scaleable, full-stack SaaS platforms to performant, lead-converting landing pages.
My solutions boosted conversion rates, improved user retention, and reduced infrastructure costs by 40% through component reuse, performance optimization, and seamless frontend architecture.
Primary Stack:
🔷 React (Next.js)
🔷 TypeScript or JavaScript
🔷 ShadCN/Radix UI
🔷 TailwindCSS
🔷 MongoDB
I also have experience with:
Front-end: Astro, Remix,
Platforms: AWS, GCP, Azure
CMS: WordPress, Strapi, Payload, Directus, Sanity, Contentful
GraphQL / REST API
My Expertise:
🔶 Web Applications
🔶 SaaS Products
🔶eCommerce sites
🔶 Landing Pages (Conversion oriented)
🔶 Creative Coding
🔶 SEO Optimized Websites
🔶 Perfect Lighthouse Performance
🔶 AWS
However I am open to, and have experience in all kinds of projects.
If you're interested in a fast, high performance site, don't hesitate to reach out!
Omari T.
has worked
.
$15/hr
$400K+ earned
Start of list.
End of list.
Digital Vision, Engineered to Perfection: 16+ Years of Proven Expertise
I'm a Top-Rated Full Stack Developer specializing in Web & Mobile App Development with Advanced AI Expertise. With 16 years of hands-on experience since 2007, I transform complex ideas into robust, scalable, and intelligent digital solutions. My core strength lies in crafting custom web solutions using Python, Node.js, and React, seamlessly integrating cutting-edge AI technologies like TensorFlow and PyTorch.
Strategic Value & Specializations
Idea to Impact: I excel in idea elaboration and expansion, integrating advanced AI algorithms and Machine Learning models to drive innovation.
Industry Focus: Proven expertise in high-value sectors including Blockchain, FinTech, Real Estate CRM, and On-Demand Service Applications.
Seamless Integration: Proficient in utilizing key 3rd Party APIs such as Facebook, Google, Twilio, Stripe, and Braintree for enhanced functionality.
Global Reach & References: With experience spanning 30+ countries across North America, Europe, and Australia, references are readily available upon request.
We offer professional software engineering services designed to help clients achieve their business objectives through strategic coding, efficient team building, and proactive technological gap addressing.
Dedicated Team: We operate as an agency with dedicated developers who collaborate directly with clients. I personally lead my team throughout each project, ensuring excellence and leveraging over 18 years of my own experience.
Flexible Engagement: We offer flexible pricing options (hourly or fixed) tailored to suit the unique needs of each client.
Transforming Your Business with Scalable Solutions
Are you seeking a web and mobile solution to elevate your business? I bring a proven track record of success in Mobile App Development, Web Application Development, and the implementation of highly scalable web architectures using Python, Node.js, and React.js.
My specialization extends across a wide array of languages, libraries, and frameworks, with a strong focus on seamlessly integrating AI solutions—from intelligent data analysis with NLP to predictive modeling.
Core Technical Proficiencies
🏅 Web Development: Python/Django, Laravel, Spring Framework, Java
🏅 Frontend: React.JS, JQuery, Bootstrap, HTML5, CSS, JavaScript
🏅 Backend: Restful/SOAP API, PHP, Node.js, Java, Spring, Websockets
🏅 Cloud Backend: Firebase, Amazon EC2, Elastic Beanstalk, REDIS, S3
🏅 Native Mobile: iOS (Objective-C, Swift), Android SDK
🏅 Hybrid App: Flutter, React Native, Android/iOS
🏅 Video/Chat: Wowza, Red5Pro, WebRTC (Twilio), Live streaming
🏅 Databases: MySQL, SQLite, Postgres, MongoDB, DynamoDB
🏅 Computer Vision: OpenCV, Tesseract
🏅 Search Engines: Apache SOLR, ElasticSearch
🏅 Payments: Stripe, PayPal
🏅 API Development: RESTful APIs, GraphQL
🏅 Version Control: Git, GitHub, Bitbucket
Mobile App Development Services:
✔ From Ideation to MVP and Beyond
✔ Customizations, Updates, and Fixes
✔ Backend Integrations with Firebase or AWS
✔ Geo-location and Geo-fencing capabilities
✔ Custom Built, Food Delivery, and On-Demand Applications
✔ Expertise in React Native, Native, and Cross-Platform Solutions
✔ Firebase, REST API Integration, Payment Gateways, and more
Full-Stack Development Services:
✔ Deep expertise in JavaScript, Python, Django, TensorFlow, Node.js, React.js, and a wide array of other technologies.
✔ Specialization in FinTech, AI/ML, On-Demand Services, Blockchain, Retail, Cloud, and IoT solutions.
Committed to Your Success
I prioritize client satisfaction, ensuring each project aligns perfectly with both budgetary and communication needs. With a passion for software development and decades of experience in managing projects, people, and budgets, my aim is to build long-term, successful client relationships.
Thank you for considering my profile. I eagerly look forward to collaborating with startups, SMEs, and corporates to build exceptional apps and systems together, ensuring the highest quality deliverables!
Associated with
SpyreSync
$1M+
earned