Hire the Best CTO For Hire

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Peter H.

Plymouth, United Kingdom

$60/hr
5.0
10 jobs

I'm a Fractional CTO, AI Engineer and software architect with over 20 years of experience building and growing software platforms. Typical engagements include: - Fractional CTO and technical leadership - Review AI generated codebases and prepare for production release - AI-powered SaaS product development - Completing or rescuing stalled software projects - Converting AI/vibe-coded prototypes (Lovable, Bolt, Replit, Cursor, Claude Code, etc.) into secure, scalable production applications - Technical due diligence and architecture reviews - Modernising legacy applications - Mentoring developers and engineering teams I work with founders, startups and established companies who need an experienced technical partner rather than just another developer. AI is now transforming the way software is built, and I specialise in bridging the gap between rapid AI-generated prototypes and production-quality systems. I regularly review AI-generated code, redesign architecture where needed, improve quality and security, integrate LLMs and AI agents, and help businesses implement practical AI solutions that deliver real value. Alongside consulting, I mentor developers and technical founders on software architecture, modern development practices, AI-assisted engineering, React, Angular, Node.js, TypeScript and cloud technologies. My goal is to help teams become more productive while maintaining high engineering standards. Over the last two decades I've led the design and delivery of SaaS platforms across sectors including healthcare, enterprise software, data analytics, ecommerce, logistics and education. My technical background includes React, Angular, Node.js, TypeScript, MongoDB, PostgreSQL and cloud-native development on AWS and Google Cloud, delivering scalable, secure, multi-tenant platforms from concept through to production. Clients hire me because I combine strategic technical leadership with hands-on delivery. I can help shape the roadmap, challenge assumptions, guide your team, write production code when needed, and ensure your product is built on solid technical foundations that will scale as your business grows.

  • MongoDB
  • Angular
  • Node.js
  • AngularJS
  • JavaScript
  • TypeScript
  • Ionic Framework
  • API
  • React
  • SCSS
  • HTML
  • SQL
  • AWS CloudFormation
  • AI Agent Development
  • AI Development
Debra W.

Los Angeles, California

$250/hr
4.9
104 jobs

AI Systems · Platform Architecture · Full-Stack · DevOps · Financial & Blockchain Infrastructure I’m a fractional CTO and technical advisor helping founders and operators make high-leverage technology decisions across AI, finance, and complex platforms. I work with companies that need senior-level judgment — not just execution — to define their tech stack, product roadmap, budgets, and fundraising strategy. My background spans AI systems, platform architecture, DevOps, full-stack development, and security-first financial and blockchain infrastructure. I’m particularly strong at: • Translating business and financial goals into scalable technical architecture • Designing and deploying AI systems that reduce operational overhead and improve margins • Evaluating SaaS vs custom build decisions with a clear ROI lens • Advising on data, security, and compliance for regulated or revenue-critical systems • Supporting founders through technical due diligence and investor conversations I’ve served as CTO or senior advisor across startups and growth-stage companies in fintech, marketplaces, media, government services, and operationally complex businesses. My role is often to bring clarity where teams are stuck, reduce risk in major technical decisions, and build systems that scale without unnecessary complexity. If you’re looking for a senior technical partner who understands AI, finance, and real-world operations, I’m happy to start with an audit or advisory engagement.

  • TypeScript
  • Node.js
  • Docker
  • Python
  • PostgreSQL
  • AWS Lambda
  • DevOps
  • Solidity
  • Blockchain
  • Serverless Computing
  • Infrastructure as Code
Aqib J.

Islamabad, Pakistan

$19/hr
5.0
41 jobs

🏆 TOP RATED Freelancer | Senior PHP & Laravel Developer | SaaS Development Expert ✅ **50+ successful web applications delivered** including SaaS platforms, CRM systems, ERP solutions, client portals, marketplaces, and custom business applications. 🚀 **15+ MVPs successfully launched**, helping startups transform ideas into scalable, production-ready SaaS products. 💠 **Top Rated Freelancer** with consistent 5-star feedback and long-term client relationships. 🎁 FREE FREE FREE Project Architecture Review I'll review your existing application, requirements, or idea and provide practical recommendations, identify bottlenecks, and suggest the best technical approach—completely free. 🎁 Free UI Mockup or Dashboard Preview For new SaaS products or web applications, I'll create a sample page, dashboard layout, or interface concept so you can evaluate my approach before making a hiring decision. 🎁 Free 30-Minute Technical Consultation Let's discuss your project over a call or chat. I'll answer your technical questions, suggest the best architecture, estimate development phases, and help you avoid costly mistakes—even if we don't end up working together. Hello! I'm a **Senior PHP & Laravel Developer** with over **9 years of experience** building custom web applications and SaaS products for startups, agencies, and growing businesses. My primary expertise is **PHP and Laravel**, where I've developed everything from MVPs and CRM systems to enterprise-level SaaS platforms. I focus on writing clean, maintainable, and scalable code while ensuring every application is secure, fast, and built for long-term growth. Alongside Laravel, I work with WordPress, JavaScript, React, Next.js, MySQL, PostgreSQL, and modern cloud platforms to deliver complete web solutions. # MY CORE EXPERTISE ## 1️⃣ PHP & Laravel Development Building secure and scalable web applications using modern Laravel best practices. • Custom Laravel Applications • Enterprise PHP Solutions • RESTful API Development • Authentication & Authorization • Role & Permission Systems • Admin Dashboards • Queue & Background Jobs • Multi-Tenant SaaS Architecture • Third-Party API Integrations • Database Design & Optimization --- ## 2️⃣ SaaS Development I specialize in designing and developing SaaS products that are scalable, secure, and easy to maintain. • Multi-Tenant SaaS Platforms • CRM & ERP Systems • Client Portals • Membership Platforms • Subscription Platforms • Business Automation Systems • Internal Management Systems • Analytics Dashboards --- ## 3️⃣ WordPress Development When a project requires content management or marketing websites, I build custom WordPress solutions. • Custom Theme Development • Plugin Development • WooCommerce • Elementor • ACF • Custom CMS Solutions • API Integrations • Performance Optimization --- ## 4️⃣ Frontend Development Creating responsive, user-friendly interfaces. • JavaScript • React.js • Next.js • HTML5 • CSS3 • Tailwind CSS • Bootstrap --- ## 5️⃣ API & Payment Integrations Integrating third-party services into custom applications. • Stripe • PayPal • REST APIs • OAuth Authentication • Webhooks • Shipping APIs • Email Services • CRM Integrations --- ## 6️⃣ Database & Infrastructure Building reliable backend systems. • MySQL • PostgreSQL • Redis • Firebase • AWS • DigitalOcean • Linux Servers • Git & CI/CD --- # WHY CLIENTS HIRE ME ✔ Top Rated Freelancer ✔ 9+ Years of PHP & Laravel Experience ✔ Strong SaaS Architecture Knowledge ✔ Clean, Maintainable Code ✔ Secure & Scalable Solutions ✔ Excellent Communication ✔ Long-Term Technical Support ✔ On-Time Delivery --- ## Technologies **PHP • Laravel • WordPress • MySQL • PostgreSQL • JavaScript • React • Next.js • HTML5 • CSS3 • Tailwind CSS • Bootstrap • REST APIs • Stripe • PayPal • Redis • Git • AWS • DigitalOcean • SaaS Development • CRM • ERP • Client Portal • Multi-Tenant Applications • API Integration**

  • Laravel
  • PHP
  • MySQL
  • React
  • Vue.js
  • JavaScript
  • TypeScript
  • Web Development
  • HTML5
  • CSS 3
  • Next.js
  • API Integration
  • Node.js
  • SaaS Development
  • REST API
  • Custom PHP
  • Tailwind CSS
  • AI Development
  • Claude
  • Front-End Development
Abhinav K.

New York, New York

$75/hr
4.9
67 jobs

I build MVPs that are production-ready, and ship faster than traditional dev cycles. As a Lovable.dev, Replit Base44 Top-Rated Freelancer on Upwork with 100% Job Success, I help founders go from AI-driven prototypes to revenue-ready apps with Lovable + Supabase, Replit, Bolt Base44 or Cursor. As an AI Engineer and Full Stack Developer with 13+ years of experience transforming complex ideas into market-ready products. I specialize in 0-to-1 launches, having built scalable backend systems for SaaS, payments, fintech, and consumer applications. - Expert in AI integration and modern development with Lovable, Replit, Bolt and Cursor - Full-stack mastery: ReactJS, NodeJS, TypeScript, Java, HTML/CSS3, Supabase, Postgres, Mongo, NoSql - Proven track record launching MVPs that scale from startup to enterprise - End-to-end project ownership with transparent communication I build what’s lovable to clients: • Lovable SaaS MVPs (not Figma mocks that never ship) • Lovable AI tools with GPT + multi-model reasoning • Lovable CRMs that auto-nurture leads • Lovable internal systems (no more dev tickets, just results) My stack? Pure lovable synergy: Lovable.dev (UI & rapid SaaS scaffolding) Supabase (real-time DB, auth, edge functions) Make (automation + integrations) Relevance.ai (AI agents & workflows) Framer (UX polish & storytelling) Hire me if you want: → Systems that feel production ready to users and scale silently → AI that works today (not "someday") → Zero micro-management. Just delivering results, fast. I’m ideal for AI product owners/CEOs, SaaS founders, agencies & AI teams who demand high level execution - not just code. Let’s make your vision lovable. Skills & Expertise Lovable Website Development User Experience Design Responsive SaaS Design UI/UX Wireframing & Prototyping Typography, Color Theory, Layout, Grid Systems Mobile-First & Cross-Browser Compatible Design Animation, Microinteractions, Parallax & Scroll Effects Branding, Visual Identity, Illustrations, Custom Icons A/B Testing, Conversion Optimization, SEO Basics Frontend Development Next.js / React (via Lovable exports) TailwindCSS for scalable design systems Supabase Auth + DB + Edge Functions API integrations (Stripe, Twilio, OpenAI, Resend) AI-Enhanced Workflows AI Copywriting & Prompt Engineering (OpenAI, Claude) Conversational UI (AI chat/assistants) Data Visualization & Analytics Dashboards Automated pipelines (Make, Supabase events) Design Thinking, Persona Creation, User Flows, Storyboards Keywords: Lovable, Lovable.dev, Lovable developer, Lovable expert, Lovable MVP, Lovable app builder, Lovable bug fix, Replit, Replit developer, Replit agent, Bolt, Bolt.new, Bolt.new developer, Base44, Base44 developer, v0, v0.dev, Cursor, Cursor AI, vibe coding, vibe coder, AI MVP builder, AI app developer, AI-powered web apps, Supabase, Supabase integration, Supabase auth, full-stack AI apps, SaaS development, startup MVP, MVP development, no-code to production, rapid prototyping, AI prototyping, Stripe integration, API integration, React, Next.js, TypeScript, Tailwind CSS, responsive design, UI/UX design, web app development, mobile-first design, dashboard development, admin panel, user authentication, real-time database, edge functions, serverless, Vercel deployment, production-ready apps, scalable web apps, OpenAI integration, Claude integration, AI automation, workflow automation, custom web applications, client portals, SaaS platforms, fintech apps, healthcare apps, e-commerce apps, landing pages, conversion optimization, cross-browser compatibility, Figma to code, design to development, full-stack developer, AI engineer, prompt engineering

  • MongoDB
  • Minimum Viable Product
  • AI Development
  • AI Platform
  • SaaS Development
  • Supabase
  • PostgreSQL
  • TypeScript
  • AI Marketplace
  • React
  • Full-Stack Development
  • JavaScript
  • NodeJS Framework
Tanmay V.

Jaipur, India

$6/hr
4.8
80 jobs

I am a dedicated Lead Generation Specialist with a strong background in identifying and engaging high-quality prospects. With a Bachelor's degree from the University of Rajasthan, Jaipur, and extensive experience across multiple industries, I bring a comprehensive skill set and a data-driven approach to help businesses expand their client base. Expertise & Tools: I specialize in using tools like LinkedIn Sales Navigator, Apollo, RocketReach, SignalHire, Zoominfo, Lusha, and others to identify key decision-makers and connect with them effectively. My deep understanding of these platforms ensures that I can deliver accurate and relevant leads tailored to your business needs. Skills & Services: Lead Generation: I excel in finding and qualifying leads that match your target audience, ensuring you connect with the right prospects. Data Research: My methodical approach allows me to gather and verify crucial contact information, providing you with reliable data. Prospect Engagement: I effectively engage prospects through personalized outreach strategies, maximizing the chances of conversion. Problem Solving: With a solid background in customer service, I bring strong problem-solving skills to resolve any challenges that arise during the lead generation process. Professional Experience: Teleperformance: As a Customer Care Executive, I developed exceptional communication and problem-solving skills while handling customer inquiries and issues. Amazon: I played a critical role in maintaining customer satisfaction by providing timely and effective support, which honed my ability to manage client relationships. Astegic Infosoft Pvt Ltd: As a Senior Data Researcher, I conducted targeted research to identify relevant individuals and validated contact details, ensuring the delivery of precise and actionable data. Marktine Technology Solutions Pvt Ltd: In my role as a Business Development Executive, I was responsible for identifying target companies, finding decision-makers, retrieving and fabricating contact information, and engaging with prospects through LinkedIn and email campaigns. My efforts led to successful lead generation and client acquisition. Why Work With Me? I am passionate about helping businesses grow by providing top-notch lead generation services. My approach is detailed and thorough, ensuring that every lead I deliver is a potential opportunity for your business. With my combination of skills, experience, and dedication, I am confident in my ability to contribute to your success. Let's connect and explore how I can help you achieve your business goals through effective lead generation.

  • Lead Generation
  • LinkedIn Lead Generation
  • Apollo.io
  • Data Analysis
  • Email Campaign
  • Sendinblue
  • Prospect Research
  • Prospect List
  • B2B Lead Generation
  • Email Automation
  • Customer Support
  • Customer Care
  • Chatbot Integration
Jason M.

San Diego, California

$95/hr
4.9
48 jobs

🚀 🥇 Expert-Vetted | Hands-On AI/ML Engineer | I Build LLM Apps, RAG Systems & AI Agents (MCP, LangGraph) | Python, AWS, GCP, Azure | Healthcare & FinTech 👁‍🗨 Overview I build and ship production AI systems myself, end to end. No handoffs, no delegation: I design the architecture, write the code, and stay on it until it is deployed, monitored, and generating ROI. I bring 15+ years of hands-on AI/ML engineering, a PhD in Machine Learning from Iowa State University, and a Master's in Computational Neuroscience from UC San Diego. ✅ What I Build: • LLM Applications: RAG pipelines, chatbots and copilots, document AI, semantic search, structured data extraction • AI Agents: Multi-agent systems, MCP (Model Context Protocol) tool integrations, LangGraph orchestration, function/tool calling, agentic workflow automation • Model Customization: Fine-tuning (LoRA/QLoRA, RLHF/DPO), prompt optimization, evals and guardrails, open-weight model serving (vLLM) • Healthcare AI: Clinical trial automation, medical document generation, HIPAA-compliant systems • Full-Stack AI Products: Python/FastAPI backends, React frontends, Kubernetes, CI/CD across AWS, GCP, Azure 🎯 Recent Hands-On Builds: • Engineered a clinical trial intelligence system for enterprise pharma: ingested, embedded, and indexed 100K+ trials with multi-index, multi-LLM RAG and advanced PDF parsing, powering Q&A, chat, and benchmarking • Built a GenAI product that drafts 100+ page regulatory clinical trial protocols (95% of the full M11 document), with multi-agent validation, consistency, and styling checks • Coded and deployed an ICD-10 billing code prediction model on GCP and an EHR-integrated physician sidebar on AWS EKS • Rescued a failing third-party ML platform, refactored it, and took it to production on AWS at ResMed (NYSE: RMD), enabling their first commercial AI healthcare product • Built ML-powered ad targeting and recommendation systems generating $100K+/month, plus AI products earning $1M+ revenue in year one 💼 Industry Expertise: • Healthcare/Pharma: Clinical trials, EHR API integration, medical AI, FDA-regulated software • FinTech: Real-time fraud detection, card-linked platforms, transactional APIs (MasterCard and Visa partnerships) • Enterprise SaaS and Retail/E-commerce: Multi-tenant APIs, recommendation engines, customer analytics 🔧 Technical Stack: AI/ML: GPT-5, Claude, Gemini, Llama, DeepSeek, Qwen; fine-tuning (LoRA/QLoRA, PEFT, RLHF/DPO); RAG and GraphRAG, hybrid search, rerankers, embeddings Agents: MCP, LangGraph, LangChain, LlamaIndex, CrewAI, OpenAI Agents SDK, structured outputs, tool calling Languages: Python, TypeScript/JavaScript, SQL, Java, Go Frameworks: PyTorch, Hugging Face, FastAPI, React, TensorFlow, Scikit-learn Serving & MLOps: vLLM, Ollama, AWS (SageMaker, Lambda, ECS/EKS), GCP (Vertex AI), Azure AI Foundry, Kubernetes, Docker, MLflow, Weights & Biases Evals & Observability: LangSmith, Langfuse, RAGAS, guardrails, LLM cost optimization Databases: PostgreSQL/pgvector, Pinecone, Qdrant, Weaviate, ChromaDB, Elasticsearch, MongoDB, Redis 📊 Quantifiable Impact: • 100K+ clinical trials processed, indexed, and made queryable for enterprise users • 100+ page medical documents generated with regulatory compliance • 94% accuracy in crisis detection and 73% engagement increase for a nonprofit youth chatbot • 10X subscriber growth driven by models I built and deployed • $100K+/month revenue from ML-powered ad targeting 🎓 Credentials: • PhD, Machine Learning (Iowa State University); M.Sci., Computational Neuroscience (UC San Diego) • IBM Certified: RAG and Agentic AI; Deep Learning Specialization (Coursera) • Published AI/ML researcher (Psychological Science, ICSE); 4 provisional patents in AI/computer vision 🌟 What Sets Me Apart: I am senior, and I still write the code. On every engagement you get one engineer doing the actual work: architecting, coding, testing, deploying, documenting. Because I have built AI in regulated healthcare and fintech environments, compliance, evals, and monitoring are baked in from day one rather than bolted on. My neuroscience background shapes how I build AI systems that genuinely understand human behavior and needs. 🤝 Working With Me: You work directly with me, and I personally do the work. Expect working code early (usually in the first week), frequent demos, clear async communication, and clean documentation at handover. US-based in San Diego (Pacific time), available for both short sprints and long-term builds. Have an AI feature or product that needs to get built? Send me the details and I will reply with exactly how I would build it.

  • Artificial Intelligence
  • Machine Learning
  • Data Extraction
  • ETL Pipeline
  • Data Analysis
  • Large Language Model
  • AI Agent Development
  • AI Bot
  • Microsoft Azure
  • Data Science
  • Computational Neuroscience
  • Python
  • MLOps
  • Generative AI
  • Prompt Engineering

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