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Sergei S.
$25/hr
100% Job Success
$20K+ earned
Available now
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A dedicated Software Developer with over twenty years of experience professionally deploying full-cycle solutions. My latest experience is developing complex, market-oriented Android applications, converting Swift code to Kotlin, and troubleshooting bugs in Android applications. With expertise in Android engineering, I will resolve your app development needs while achieving the results expected from a senior professional. I am reliable in working with minimal supervision and always conduct thorough research before reaching out with questions.
Sergei S. has worked .
Ardhan M.
$40/hr
100% Job Success
$200K+ earned
Offers consultations
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10+ years in UpWork with 5 stars average feedback! These are my expertise but not limited to: C/C++, Rust, Python, JavaScript Embedded system: Linux System Programming, Embedded System, Raspberry Pi and IoT Web & Mobile: Flutter, Full Stack Developer Cloud framework: AWS, Firebase, Azure, Digital Ocean AI service: OpenAI, Ollama, Azzure AI Experienced working with medium to large scale projects, excellent communication, can adapt to client timezone, great team worker and fun to work with. Please look at my feedback why clients tend to use my services Always looking forward for new challenges!
Ardhan M. has worked .
Siamak S.
$35/hr
100% Job Success
$2K+ earned
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Hi, I'm Siamak. I help startups, founders, and businesses build AI-powered products, autonomous agents, and modern web applications that automate workflows, reduce manual work, and create measurable business value. Over the years, I've worked across full-stack development, SaaS platforms, API architecture, and AI automation. My focus today is building production-ready AI systems using the latest agentic frameworks and LLM technologies. 💡 What I Can Build ✅ AI Agents & Multi-Agent Systems • Autonomous AI agents • Multi-agent workflows • LangGraph applications • Agent orchestration systems • Task planning and execution agents • AI copilots and assistants ✅ Claude Code & AI Development Workflows • Claude Code integrations • AI-powered software development workflows • Repository-aware coding agents • Automated code review systems • Development team automation • MCP server integrations ✅ RAG & Knowledge Systems • Retrieval-Augmented Generation (RAG) • Knowledge base chatbots • Internal company assistants • Document intelligence systems • PDF, Notion, Confluence, and database integrations • Vector database implementations ✅ AI Automation • Customer support automation • Lead generation agents • Sales outreach systems • Workflow automation • Data extraction and processing • Business process optimization 🛠 Core Technologies AI & Agentic Development • OpenAI • Claude • Gemini • LangChain • LangGraph • CrewAI • MCP (Model Context Protocol) • Ollama • Vector Databases • RAG Architectures Backend • Python • FastAPI • Flask • Node.js • Express.js • PostgreSQL • MongoDB • REST APIs • Microservices Frontend • React • Next.js • TypeScript • Tailwind CSS • Shadcn/UI Why Clients Hire Me ✔ Clear communication and fast response times ✔ Business-focused solutions, not just code ✔ Clean, scalable, maintainable architecture ✔ AI systems built for production environments ✔ Reliable delivery and long-term collaboration Whether you need an AI agent, an intelligent automation system, a RAG-powered assistant, or a complete AI SaaS platform, I can help transform your idea into a production-ready product. Let's discuss your project.
$50/hr
100% Job Success
$700+ earned
Available now
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I help businesses figure out where AI actually saves time and money — then I build it. 20+ years in engineering at companies like PayPal, Yelp, and Vevo. I've led teams, architected platforms, and shipped products used by millions. Now I focus on one thing: helping businesses integrate AI into their real workflows. What I do: • Map your business processes and identify where AI creates the most value • Build and deploy AI agents, chatbots, and automation workflows • Integrate Claude, GPT, and other AI models into your existing systems • Set up always-on AI assistants that handle email, scheduling, data processing, and customer support • Create documentation and training so your team can manage it going forward I specialize in making AI accessible to non-technical teams. You don’t need to understand the technology — you just need to tell me what’s eating your time. I’ll handle the rest. Available 24/7. Fast turnaround. Plain English — no jargon.
Jeff C. has worked .
Ljubomir B.
$75/hr
100% Job Success
$700K+ earned
Available now
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I’m a Senior Software Architect and Developer with 20 years of expertise in C# and .NET, leading dev teams in producing high quality business applications and helping businesses transform legacy systems into robust, scalable, high-performance software solutions. Core Competencies: ✅ Software Architecture: Deep expertise in designing scalable, maintainable systems following SOLID principles and leveraging proven Design Patterns. ✅ Full-Stack .NET Development: Skilled with .NET Framework (since 1.1) and .NET Core, including ASP.NET (MVC, Web API), WinForms, WPF and WCF. ✅ Microservices & Cloud: Architecting modern cloud-native solutions (Azure, Docker, Kubernetes). ✅ Technical Leadership: Proven experience leading development teams, practicing Agile methodologies, and managing end-to-end CI/CD processes (Azure DevOps, Jenkins, TeamCity, AWS CodeDeploy, BitBucket Pipelines). ✅ Quality and Maintainability: Expert in writing clean, testable code (Unit testing, Integration testing, TDD). My Background: Started my career at industry leaders including Microsoft, DHI, and T-Com, gaining diverse perspectives across enterprise-grade software development. Transitioned successfully into independent contracting (10+ years), collaborating efficiently with global remote teams to deliver mission-critical projects. I pride myself on clear communication, delivering measurable business outcomes, and consistently staying ahead with modern software engineering practices. Let’s discuss how I can help your business achieve exceptional software solutions.
Ljubomir B. has worked .
Adam H.
$57.5/hr
100% Job Success
$30K+ earned
Offers consultations
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Full-Stack Developer | AI Automation Architect | Custom Integrations Hi, I’m Adam Haley — a senior full-stack developer with 20+ years of experience building reliable software systems for companies like Disney, Sony, and Apple, now focused on advanced AI automation and orchestration. I design production-grade workflows backed by real infrastructure. What I deliver: • AI-powered automation workflows (n8n, Python/Langchain, Supabase, OpenAI, AWS Bedrock) • Multi-tenant chatbot + RAG frameworks (secure, scalable knowledge bots) • Custom Infra setup - Host your own private AI Garden on a VPS (ie: Digital Ocean or AWS) • Customized Automation dashboards (see detailed stats in realtime) • System audits, Agent evaluations • Ongoing support & optimization via flexible retainers Why Work With Me: My engineering background allows me to extend n8n with a Python support layer, replacing costly third-party APIs with self-hosted services. This reduces vendor lock-in, lowers operating costs, and gives you full control over your data - especially when using private models (ie: via Ollama or AWS Bedrock) My development background also gives every project production-grade reliability. My Agent builds take into account the tradeoffs between classical deterministic architectures, and the modern flexibility of LLMs. My hybrid approach leverages each for their strengths in a way that is custom tailored to YOUR situation and the domain space at hand. 🤝 Let’s build something smart together.
Denis C.
$90/hr
100% Job Success
$100K+ earned
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I'm a senior web developer/team lead with over 15 years of experience. I love the variety of projects I've worked on and having a strong background in low-level system programming allows me to deeply understand how to be efficient and build high-performance web-applications and services. For me, It's very pleasing to see when I really can bring some value and change things for the better for customers and users. Have experience in managing and leading a team of 10 developers Communication and teamwork are essential and viable parts of the development and I'd do my best to integrate with the current team. Here is a short list of things that I use in my workflow: Django, Python, REST API, SASS, jQuery, DBA, PostgreSQL, javascript, AngularJS, React-Native, server management, AWS infrastructure, etc. If you need any further information, please do not hesitate to contact me. Thank you in advance for your time and consideration.
Yury Z.
$40/hr
100% Job Success
$90K+ earned
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Full stack Web and desktop software development using Python, Javascript, Node.js, C++, Golang, PHP, Perl for Windows and Linux. Web scraping and related research. Many years of experience in IT, solid software engineering and e-commerce background. Expertise in working over scalable, secure, and user-friendly applications for various domains.
Nguyen T.
$8/hr
100% Job Success
$10K+ earned
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I'm a resourceful full-stack developer with more than 14 years of experience. I made a lot of modern, user-friendly, responsive, high-performance and secure websites before. I'm an expert on PHP, Lavavel, Laminas/Zend framework, codeigniter, joomla, vuejs, reactjs, jquery. I can work with any websites/CRMs/PORTALS/Sass and Web applications using these platforms. I am looking forward to working with you and making your business successful. Thank you.
Nguyen T. has worked .
Reigner O.
$30/hr
100% Job Success
$90K+ earned
Offers consultations
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Years of experience in delivering cutting-edge engineering solutions across diverse applications and technologies, I possess a comprehensive understanding of full-stack development, ensuring interactive and user-centric website designs. My extensive knowledge encompasses large system architecture development, administration, and intricate network design and configuration.