Hire the Best B4X Developers

More than 3,000 reviews on G2
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Tim N.

Hanoi, Vietnam

$50/hr
5.0
56 jobs

Top Rated AI Marketing Systems Specialist with 7+ years building data, marketing, and AI systems If you shoot me an invitation or message I'll send you exactly how I'd approach your problem before you decide whether to hire me. ๐–๐ก๐š๐ญ ๐ˆ ๐œ๐š๐ง ๐ก๐ž๐ฅ๐ฉ ๐ฒ๐จ๐ฎ ๐ฐ๐ข๐ญ๐ก: ๐Ÿ. Cold Outbound + GTM Lead Generation Automation: Build your B2B lead gen + CRM + AI-powered outbound system: Clay + Instantly + Attio + Apollo + n8n + LinkedIn (Aimfox / Sales Navigator) + cold-email infrastructure. Currently Fractional GTM Engineer for a European-based seed-stage B2B SaaS founder. ๐Ÿ. Conversion Tracking & Attribution: GA4 + Google Tag Manager (GTM) + Meta Pixel + Meta Conversion API (CAPI) server-side + Google Enhanced Conversions + UTM hygiene + dynamic remarketing + CRM โ†” ad-platform attribution loops. ๐Ÿ‘. Google Ads + Meta Ads Management + Full-Funnel Operator: fractional growth lead running Google Ads, Meta Ads, social media, newsletter, and CRM as one connected operation. ๐Ÿ’. Marketing Dashboards & Internal Tools: Looker Studio + Google Sheets + Apps Script + Vercel web apps for agencies and consultants running the same workflow across many clients. ๐Ÿ“. AI Content Production: AI video + AI image + UGC + Shorts pipelines (HeyGen + ElevenLabs + CapCut) + bulk SEO article generators (Claude API) + AI graphic design with brand guardrails. ๐Ÿ”. Custom AI Agents + LLM Workflows + MCP Servers: Claude Code + Claude API + OpenAI API + agentic workflows + RAG pipelines + chatbots + voice agents + assistants + custom MCP servers + locally-deployed agents (Mac mini, VPS) for founders who want local-first AI. ๐‚๐š๐ซ๐ž๐ž๐ซ ๐ก๐ข๐ ๐ก๐ฅ๐ข๐ ๐ก๐ญ๐ฌ: ๐ŸŽฏ Analytics Engineer at Bench Accounting (Vancouver fintech, $89M peak revenue, 11,000+ client environments running in parallel) on dbt + SQL + Snowflake ๐ŸŽฏ Business Intelligence Analyst at Noise Digital acquired by Digital Havas Media Group (โ‚ฌ2.74B 2024 revenue, 22,610 people, 100+ markets, global big-six). Agency clients: Toyota, Adidas, J&J, Ferrero, PlayStation, A&W, Sun Life Canada ๐ŸŽฏ Fractional go-to-market (GTM) Engineer for a European-based seed-stage B2B SaaS founder ๐ŸŽฏ Fractional Growth Operator for a Manhattan luxury salon-suite brand on Madison Avenue ๐ŸŽฏ Personal brand grown 0 โ†’ 350,000 followers in 7 months on a 20-min/day n8n + Python workflow ๐ŸŽฏ Top Rated on Upwork with a 100% Job Success Score ยท 5.0โ˜… ๐Œ๐ฒ ๐ญ๐ž๐œ๐ก ๐ฌ๐ญ๐š๐œ๐ค: - Automation: n8n, Zapier, Make, Python, Apps Script, MCP - AI / LLM: Claude (Code + API), OpenAI / GPT, agentic workflows, RAG, MCP servers, Anthropic SDK - CRM: HubSpot, GoHighLevel, Salesforce, Attio, ActiveCampaign - Tracking & Ads: GA4, Google Tag Manager, Meta Pixel, Meta Conversion API (CAPI) server-side, Google Ads, Meta Ads, Enhanced Conversions, UTM hygiene - Data & Dashboards: Looker Studio, Google Sheets, Airtable, Supabase, dbt, Snowflake, BigQuery - Outbound: Instantly, Clay, Apollo, Smartlead, Sales Navigator, Aimfox ๐‚๐ž๐ซ๐ญ๐ข๐Ÿ๐ข๐œ๐š๐ญ๐ข๐จ๐ง๐ฌ: - AWS Certified Solutions Architect Associate - AWS Certified Data Analytics Specialty - Google Ads Search Certification ๐–๐ก๐ฒ ๐ฒ๐จ๐ฎ ๐ฌ๐ก๐จ๐ฎ๐ฅ๐ ๐ฐ๐จ๐ซ๐ค ๐ฐ๐ข๐ญ๐ก ๐ฆ๐ž: ๐Ÿค Quality: When your tracking breaks, I read the logs. When your CAPI loop drops events, I read the docs. Agency "GA4 experts" guess. ๐Ÿค Production-grade, not prototype-grade. I ship reliable, scalable systems built to survive real traffic not demos that fall over week one. ๐Ÿค Strategic operator, not order-taker. Hands-on, autonomous, async-clear comms. I take ownership of the build, no hand-holding required. ๐Ÿค Documented handover, no black box. Playbook+ final handoff Loom. Stop paying me and your system keeps running. Thanks for reading and let's discuss your project! ๐Ÿฅณ

  • API Integration
  • Automation
  • Artificial Intelligence
  • Generative AI
  • Python
  • n8n
  • Google Tag Manager
  • Google Analytics
  • Data Analytics
  • CRM Automation
  • Lead Generation
  • Marketing Automation
  • Zapier
  • All in One SEO
  • Content Strategy
Tayyab A.

Lahore, Pakistan

$38/hr
5.0
19 jobs

๐Ÿ† ๐“๐จ๐ฉ ๐‘๐š๐ญ๐ž๐ | ๐Ÿ’ฏ ๐‰๐จ๐› ๐’๐ฎ๐œ๐œ๐ž๐ฌ๐ฌ | ๐Ÿš€ ๐…๐ฎ๐ฅ๐ฅ ๐’๐ญ๐š๐œ๐ค & ๐€๐ˆ ๐Œ๐จ๐›๐ข๐ฅ๐ž ๐€๐ฉ๐ฉ ๐„๐ง๐ ๐ข๐ง๐ž๐ž๐ซ ๐˜”๐˜ฐ๐˜ด๐˜ต ๐˜ฃ๐˜ถ๐˜ด๐˜ช๐˜ฏ๐˜ฆ๐˜ด๐˜ด๐˜ฆ๐˜ด ๐˜ฅ๐˜ฐ๐˜ฏโ€™๐˜ต ๐˜ฏ๐˜ฆ๐˜ฆ๐˜ฅ โ€œ๐˜‘๐˜ถ๐˜ด๐˜ต ๐˜ˆ ๐˜‹๐˜ฆ๐˜ท๐˜ฆ๐˜ญ๐˜ฐ๐˜ฑ๐˜ฆ๐˜ณ.โ€ ๐˜›๐˜ฉ๐˜ฆ๐˜บ ๐˜ฏ๐˜ฆ๐˜ฆ๐˜ฅ ๐˜ด๐˜ฐ๐˜ฎ๐˜ฆ๐˜ฐ๐˜ฏ๐˜ฆ ๐˜ธ๐˜ฉ๐˜ฐ ๐˜ค๐˜ข๐˜ฏ ๐˜ฃ๐˜ถ๐˜ช๐˜ญ๐˜ฅ ๐˜ด๐˜บ๐˜ด๐˜ต๐˜ฆ๐˜ฎ๐˜ด ๐˜ต๐˜ฉ๐˜ข๐˜ต ๐˜ด๐˜ค๐˜ข๐˜ญ๐˜ฆ, ๐˜ข๐˜ถ๐˜ต๐˜ฐ๐˜ฎ๐˜ข๐˜ต๐˜ฆ ๐˜ธ๐˜ฐ๐˜ณ๐˜ฌ, ๐˜ข๐˜ฏ๐˜ฅ ๐˜ข๐˜ค๐˜ต๐˜ถ๐˜ข๐˜ญ๐˜ญ๐˜บ ๐˜ฅ๐˜ณ๐˜ช๐˜ท๐˜ฆ ๐˜ณ๐˜ฆ๐˜ด๐˜ถ๐˜ญ๐˜ต๐˜ด. Thatโ€™s exactly what I do. I help startups, agencies, and growing businesses build: โœ… ๐’๐š๐š๐’ ๐Œ๐•๐๐ฌ โœ… ๐€๐ˆ ๐€๐ฎ๐ญ๐จ๐ฆ๐š๐ญ๐ข๐จ๐ง ๐’๐ฒ๐ฌ๐ญ๐ž๐ฆ๐ฌ โœ… ๐‚๐‘๐Œ & ๐–๐จ๐ซ๐ค๐Ÿ๐ฅ๐จ๐ฐ ๐€๐ฎ๐ญ๐จ๐ฆ๐š๐ญ๐ข๐จ๐ง โœ… ๐Œ๐จ๐›๐ข๐ฅ๐ž ๐€๐ฉ๐ฉ๐ฌ (๐ข๐Ž๐’ & ๐€๐ง๐๐ซ๐จ๐ข๐) โœ… ๐€๐ˆ ๐€๐ ๐ž๐ง๐ญ๐ฌ & ๐•๐จ๐ข๐œ๐ž ๐€๐ˆ โœ… ๐…๐ฎ๐ฅ๐ฅ ๐’๐ญ๐š๐œ๐ค ๐–๐ž๐› ๐€๐ฉ๐ฉ๐ฅ๐ข๐œ๐š๐ญ๐ข๐จ๐ง๐ฌ โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” โšก ๐–๐‡๐€๐“ ๐ˆ ๐๐”๐ˆ๐‹๐ƒ โœฆ ๐’๐š๐š๐’ & ๐Œ๐•๐ ๐๐ฅ๐š๐ญ๐Ÿ๐จ๐ซ๐ฆ๐ฌ Modern scalable products using Next.js, React.js, TypeScript, Supabase, MongoDB, Firebase, and cloud infrastructure. โœฆ ๐€๐ˆ ๐€๐ฎ๐ญ๐จ๐ฆ๐š๐ญ๐ข๐จ๐ง & ๐€๐ ๐ž๐ง๐ญ๐ฌ Custom AI workflows, autonomous agents, RAG systems, AI assistants, and business automations powered by OpenAI, LangChain, CrewAI, and LangGraph. โœฆ ๐‚๐‘๐Œ & ๐๐ฎ๐ฌ๐ข๐ง๐ž๐ฌ๐ฌ ๐€๐ฎ๐ญ๐จ๐ฆ๐š๐ญ๐ข๐จ๐ง GoHighLevel, HubSpot, Salesforce, Airtable, n8n, Make, Zapier, Twilio, lead routing, follow-ups, pipelines, and operational workflows. โœฆ ๐Œ๐จ๐›๐ข๐ฅ๐ž ๐€๐ฉ๐ฉ ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ Cross-platform mobile apps with React Native & Flutter focused on clean UI/UX, performance, scalability, and real-time functionality. โœฆ ๐๐š๐œ๐ค๐ž๐ง๐ & ๐€๐๐ˆ ๐’๐ฒ๐ฌ๐ญ๐ž๐ฆ๐ฌ REST APIs, FastAPI, Node.js, Django, GraphQL, Webhooks, OAuth2, third-party integrations, and scalable cloud architecture. โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” ๐Ÿ› ๏ธ ๐“๐„๐‚๐‡ ๐’๐“๐€๐‚๐Š ๐…๐ซ๐จ๐ง๐ญ๐ž๐ง๐ Next.js โ€ข React.js โ€ข TypeScript โ€ข Tailwind CSS ๐๐š๐œ๐ค๐ž๐ง๐ Python โ€ข FastAPI โ€ข Node.js โ€ข Django โ€ข REST APIs ๐€๐ˆ & ๐€๐ฎ๐ญ๐จ๐ฆ๐š๐ญ๐ข๐จ๐ง OpenAI โ€ข LangChain โ€ข LangGraph โ€ข CrewAI โ€ข n8n โ€ข Make โ€ข Zapier ๐ƒ๐š๐ญ๐š๐›๐š๐ฌ๐ž๐ฌ MongoDB โ€ข PostgreSQL โ€ข Firebase โ€ข Supabase โ€ข Redis ๐‚๐‘๐Œ & ๐’๐ฒ๐ฌ๐ญ๐ž๐ฆ๐ฌ GoHighLevel โ€ข HubSpot โ€ข Salesforce โ€ข Airtable โ€ข Twilio ๐Œ๐จ๐›๐ข๐ฅ๐ž React Native โ€ข Flutter โ€ข Firebase ๐‚๐ฅ๐จ๐ฎ๐ & ๐ƒ๐ž๐ฉ๐ฅ๐จ๐ฒ๐ฆ๐ž๐ง๐ญ AWS โ€ข Docker โ€ข Railway โ€ข Vercel โ€ข CI/CD โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” ๐Ÿ“ˆ ๐–๐‡๐˜ ๐‚๐‹๐ˆ๐„๐๐“๐’ ๐–๐Ž๐‘๐Š ๐–๐ˆ๐“๐‡ ๐Œ๐„ โœ” Clean & scalable architecture โœ” Fast communication & reliable delivery โœ” Business-focused development approach โœ” Strong understanding of AI & automation โœ” Production-ready systems built for growth โœ” Long-term support & optimization โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” ๐Ÿค ๐€๐ฏ๐š๐ข๐ฅ๐š๐›๐ฅ๐ž ๐…๐จ๐ซ โ€ข SaaS MVP Development โ€ข AI Automation Systems โ€ข CRM & Workflow Automation โ€ข Mobile App Development โ€ข Full Stack Development โ€ข AI Agents & Voice AI โ€ข API Integrations & Backend Systems โ€ข Startup & Business Automation Solutions โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” ๐—”๐˜ƒ๐—ฎ๐—ถ๐—น๐—ฎ๐—ฏ๐—น๐—ฒ ๐—ณ๐—ผ๐—ฟ ๐—–๐—ฎ๐—น๐—น๐˜€ & ๐—Ÿ๐—ผ๐—ป๐—ด-๐—ง๐—ฒ๐—ฟ๐—บ ๐—–๐—ผ๐—น๐—น๐—ฎ๐—ฏ๐—ผ๐—ฟ๐—ฎ๐˜๐—ถ๐—ผ๐—ป๐˜€ ๐—›๐—ฎ๐—ฝ๐—ฝ๐˜† ๐˜๐—ผ ๐—ฆ๐—ถ๐—ด๐—ป ๐—ก๐——๐—” & ๐—ก๐—ผ๐—ป-๐—–๐—ผ๐—บ๐—ฝ๐—ฒ๐˜๐—ฒ ๐—”๐—ด๐—ฟ๐—ฒ๐—ฒ๐—บ๐—ฒ๐—ป๐˜๐˜€ ๐‹๐ž๐ญโ€™๐ฌ ๐›๐ฎ๐ข๐ฅ๐ ๐ฌ๐จ๐ฆ๐ž๐ญ๐ก๐ข๐ง๐  ๐ฌ๐œ๐š๐ฅ๐š๐›๐ฅ๐ž, ๐ฌ๐ฆ๐š๐ซ๐ญ, ๐š๐ง๐ ๐ก๐ข๐ ๐ก-๐ฉ๐ž๐ซ๐Ÿ๐จ๐ซ๐ฆ๐ข๐ง๐ . ๐๐ž๐ฌ๐ญ ๐ซ๐ž๐ ๐š๐ซ๐๐ฌ, Tayyab.

  • Full-Stack Development
  • AI Development
  • Mobile App Development
  • Automated Workflow
  • n8n
  • HighLevel
  • SaaS Development
  • Minimum Viable Product
  • React Native
  • Next.js
  • React
  • Python
  • Node.js
  • Local SEO
  • CRM Development
  • HubSpot
  • Salesforce
  • Sales Funnel Builder
  • UI/UX Prototyping
  • Marketing Automation
Patrick G.

Ashland City, Tennessee

$50/hr
5.0
49 jobs

I build and improve practical software systems for businesses, including full-stack web apps, automations, AI tools, integrations, dashboards, customer-intake flows, and operational workflows. My strength is taking a business problem, understanding the moving pieces, and turning it into a working technical system. That may mean building from scratch, fixing an inherited project, connecting APIs, improving a website, automating a workflow, cleaning up a database, or integrating tools across a companyโ€™s existing stack. I work across modern web, automation, AI, CRM, payment, communication, and data tools. Recent work has involved platforms, codebases, and tools such as React, Python, JavaScript/TypeScript, Supabase, Stripe, Twilio, Retell, Make .com, n8n, APIs, webhooks, and LLMs. Iโ€™m also comfortable adapting across broader stacks and business platforms, including Django, HubSpot, GoHighLevel, WordPress, CRMs, internal tools, and similar systems. Clients hire me because I diagnose before I build, communicate clearly, explain tradeoffs honestly, and focus on systems that are reliable, maintainable, and useful in the real world. What I can help with: โ€ข Full-stack web apps, dashboards, portals, and business tools โ€ข Workflow automations, APIs, webhooks, and backend integrations โ€ข AI voice agents, chatbots, intake systems, and LLM-powered tools โ€ข CRM, payment, phone/SMS, calendar, email, and operational workflows โ€ข Data pipelines, reporting workflows, and internal business systems โ€ข Website improvements, launch-readiness fixes, and inherited-project cleanup โ€ข Security, OAuth, deployment, documentation, and handoff improvements Credentials and proof: โ€ข 100% Job Success Score on Upwork โ€ข University of Maryland certification โ€ข Anthropic Academy certifications listed in my profile โ€ข Make .com Advanced Certified โ€ข Camunda BPMN Certified โ€ข Strong client feedback for communication, reliability, problem-solving, and delivery quality If you need a practical technical builder who can understand the problem, choose the right approach, and deliver a working system, send me the details. Iโ€™ll tell you what I recommend, what it will take, and whether Iโ€™m the right fit.

  • Automation
  • AI Agent Development
  • AI App Development
  • AI Consulting
  • AI Content Creation
  • AI Development
  • AI Speech-to-Text
  • Web Development
  • Chatbot Development
  • Website Customization
  • Website Optimization
  • Web Design
  • Web Application Development
  • LLM Prompt Engineering
  • Retrieval Augmented Generation
  • API
Shubham S.

Hamirpur, India

$25/hr
4.5
13 jobs

I build AI agents, N8N automations, and RAG systems that save businesses 20+ hours/week and reduce operational costs by 40%. Recent wins: โ†’ N8N workflow saving client 20+ hours/week โ†’ RAG chatbot trained on 10,000+ documents for enterprise SaaS โ†’ Voice AI assistant handling 500+ inbound calls/day โ†’ Multi-agent AI system cutting manual work by 60% ๐Ÿš€ AI Automation Engineer | Founder & CTO @ NeuroML I help startups, agencies, and businesses build AI-powered products, N8N automation systems, and scalable SaaS platforms that reduce operational costs, automate repetitive work, and accelerate growth. I lead development of enterprise-grade AI agent solutions, autonomous multi-agent systems, N8N workflow automation, RAG knowledge platforms, and cloud-native applications for clients across USA, Australia, Spain, and Europe. ๐Ÿ’ก ๐‚๐จ๐ซ๐ž ๐„๐ฑ๐ฉ๐ž๐ซ๐ญ๐ข๐ฌ๐ž: โœ… AI Agents & Multi-Agent Systems (LangGraph, CrewAI, AutoGen) โœ… N8N & Make Automation Workflows โœ… RAG-Based Chatbots & Knowledge Base Platforms โœ… OpenAI, Claude, Gemini & Open-Source LLMs โœ… Voice AI Systems (Retell AI, Vapi, ElevenLabs, Deepgram) โœ… GoHighLevel (GHL) AI Integration & CRM Automation โœ… LangChain & LangGraph Pipelines โœ… Replit & Vibe Coding โ€” Rapid AI Prototyping โœ… Full-Stack Development (React, Next.js, Python, FastAPI, Django) โœ… Web Scraping & Data Extraction (Scrapy, Selenium, Playwright) โœ… Vector Databases (Pinecone, Weaviate, ChromaDB) โœ… AWS, Docker, Linux & Cloud Infrastructure โœ… PostgreSQL, MySQL, MongoDB & Redis ๐ŸŽฏ ๐’๐จ๐ฅ๐ฎ๐ญ๐ข๐จ๐ง๐ฌ ๐ˆ ๐๐ฎ๐ข๐ฅ๐: - AI Agents & Agentic Workflow Systems - N8N & Make Business Automation - Custom AI Chatbots & Assistants - Voice AI Calling Solutions (Inbound + Outbound) - RAG & Enterprise Knowledge Base Platforms - GoHighLevel AI Integration & CRM Automation - AI-Powered SaaS Products & MVPs - Rapid Prototyping with Replit & Vibe Coding - Lead Generation & AI Outreach Systems - Data Extraction & Monitoring Platforms - API Development & Third-Party Integrations ๐Ÿ“ˆ ๐‘๐ž๐œ๐ž๐ง๐ญ ๐๐ซ๐จ๐ฃ๐ž๐œ๐ญ๐ฌ: โ†’ N8N automation workflow saving client 20+ hours/week โ†’ RAG chatbot trained on 10,000+ documents for enterprise SaaS โ†’ Voice AI assistant handling 500+ inbound calls/day โ†’ Multi-agent AI system for business workflow automation โ†’ GoHighLevel AI integration for real estate agency โ†’ Full-stack AI SaaS platform with OpenAI + Stripe integration โ†’ Rapid MVP prototyping using Replit & AI-assisted development โญ ๐–๐ก๐ฒ ๐‚๐ฅ๐ข๐ž๐ง๐ญ๐ฌ ๐–๐จ๐ซ๐ค ๐–๐ข๐ญ๐ก ๐Œ๐ž: โœ” Business-focused solutions โ€” not just code โœ” Clean, scalable, production-ready architecture โœ” Fast communication & regular progress updates โœ” Strong focus on performance, reliability & security โœ” Long-term partnership mindset ๐Ÿ“ฉ Message me โ€” let's discuss how AI and automation can grow your business! Shubham Sharma Founder & CTO @ NeuroML AI Agent Developer | N8N Expert | LangChain | RAG | OpenAI

  • AI Agent Development
  • OpenAI API
  • n8n
  • Python
  • Django
  • LangChain
  • Automated Workflow
  • Full-Stack Development
  • AWS Amplify
  • DevOps
  • FastAPI
  • React
  • NLP Tokenization
  • AI Bot
  • AI App Development
  • AI Product Management
  • Make.com
  • Pinecone
  • ElevenLabs
Ayoub S.

Fes, Morocco

$60/hr
4.9
46 jobs

I build SaaS and AI MVPs end to end. You bring the idea โ€” I ship the product. Most founders waste months bouncing between developers who overpromise and underdeliver. I don't work that way. With a 100% Job Success Score across 30+ projects, I build things that go live, get users, and scale. Dual degree in Software Engineering and Data Science. Experience shipping real systems at Orange and General Electric. Now I do the same for startups โ€” faster and leaner. What I build: SaaS MVPs โ€” Multi-tenant architecture, auth, subscriptions, dashboards. The full product, not just a prototype. AI-Powered Apps โ€” LLM integrations, RAG pipelines, AI copilots and chatbots embedded into products that actually work in production. Automation Workflows โ€” n8n, Make, Zapier and custom API logic that eliminate the manual work killing your team's productivity. Full-Stack from scratch โ€” React / Next.js frontend, Node/NestJS or Spring Boot backend, deployed on AWS with Docker and CI/CD. Stack: Next.js, React, Node.js, NestJS, Spring Boot, Python, LangChain, OpenAI API, n8n, Make, AWS, Docker, Kubernetes. Got an idea, a half-built product, or a process you need automated? Let's ship it.

  • MERN Stack
  • JavaScript
  • React
  • Angular
  • NestJS
  • Spring Boot
  • Java
  • Python
  • Web Development
  • Front-End Development
  • Back-End Development
  • HTML
  • CSS
  • AI Platform
  • Web Application
  • API Integration
Metin I.

Sofia, Bulgaria

$34/hr
5.0
72 jobs

โœ”๏ธ Top-Rated Full Stack Developer on Upwork - $350K+ earned, 100% Job Success Score โœ”๏ธ 25,000+ hours delivered across long-term contracts since 2014 โœ”๏ธ 15+ years freelancing, mostly on Upwork - based in Bulgaria โœ”๏ธ Multiple 5+ year client relationships, because clients keep me when the work delivers โœ”๏ธ University graduate in IT and Automation ๐Ÿš€ What I Do I'm a Senior Full Stack Developer who builds AI-powered web applications and connects systems that need to talk to each other. Most of my work falls into one of three buckets: building new platforms from scratch, integrating AI into products that already exist, or stepping in as a long-term technical partner for teams that need someone reliable. I'm not a "yes man." If I see a better way to do something, I'll tell you. If I see risks in your current approach, I'll tell you that too. Some clients love this, some don't. If you want someone to just nod and code, I'm probably not your best fit. ๐Ÿค– AI Integration & Automation - AI API Integration with OpenAI, Anthropic, and Google AI - Chatbots, document processing, and content generation pipelines - Automation workflows using n8n, MCP, and custom tooling - Adding AI features to existing platforms without breaking them ๐Ÿ› ๏ธ Full Stack Development - Backend & APIs: Go, PHP/Laravel, Python/FastAPI, Node.js, REST, GraphQL - Frontend: React, Next.js, JavaScript, TypeScript, HTMX - Integrations: Shopify API, Apache Kafka, RabbitMQ - Data: MySQL, PostgreSQL, ELK - Infrastructure: Docker, Kubernetes, Linux, Prometheus, Grafana ๐Ÿ’ผ Recent Work I'm Proud Of - Open Banking infrastructure: 2 years on the backend team building UK Open Banking standard infrastructure. Conducted API conformity tests for a major US bank that played a crucial role in their CMA approval to operate in the UK market. - Logistics platform optimization: Replaced a complex Zapier-based workflow with a standalone server. Cut operational headcount from 10 managers to 1, saves a few thousand USD per month, and dramatically reduced human error. The producers, packagers, warehouse, drivers, operators, and owner are all happy with the new system. - Custom Go authentication systems, Grafana dashboards for fintech monitoring, and a number of long-term technical specialist roles where clients kept me on for 5+ years. ๐Ÿ’ฌ What Clients Say "A fantastic developer, total integrity and very reliable." - Golang full stack client (1,500+ hours) "One of the best guys we worked with." - Long-term hosting and infrastructure client "This professional is very capable. He showed proper commitment and deserves special recognition for his seriousness and correctness." - Recurring enterprise client ๐ŸŽฏ How I Work: The 3Cs - Confidentiality: I treat your data and business with the same care as my own - Continuous Improvement: I stay curious, current, and always learning what matters - Commitment: I approach every project as if it were my own business ๐Ÿ“ฉ Let's Talk If you need a senior developer who's honest about what works and what doesn't, owns the outcome, and stays for the long term, I'd be glad to chat. I usually respond within a few hours during business days.

  • Full-Stack Development
  • AI Development
  • AI Agent Development
  • AI Chatbot
  • LLM Prompt Engineering
  • OpenAI API
  • Golang
  • JavaScript
  • React
  • Next.js
  • Node.js
  • TypeScript
  • PHP
  • Laravel
  • Python
  • Automation
  • API Integration
  • n8n
  • PostgreSQL
  • MySQL

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