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Bulgaria
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$60/hr
100%
Job Success
$200K+ earned
Available now
Offers consultations
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End of list.
AI SaaS architect, senior full-stack developer, AI developer, and automation expert. I build LLM/RAG systems, AI agents, agentic workflows, ChatGPT and OpenAI integrations, and production SaaS platforms that ship in 2–4 weeks. No prototypes. No disappearing after handoff.
Founders and CTOs don't call me first. They call after the offshore agency delivered a half-working prototype. After the generalist ran out of depth. When the stakes are too high to get it wrong again — that's when they call me.
I work like a technical co-founder: I understand your business problem as clearly as the technical one. No account-manager layer, no junior handoff. You work directly with senior engineering across architecture, implementation, deployment, and the post-launch fixes that real systems always need.
Over 70% of clients come back for another engagement — because trust is easier to earn through delivery than through proposals.
📈 PRODUCTION RESULTS
✅ n8n + GPT-4 replaced a 12-person workflow — 10,000+ records/day at 99.2% accuracy, saving $380K/year. Shipped in 3 weeks.
✅ Flutter + Node.js fintech SaaS processing $2M+/month — 3 years ongoing, same client.
✅ React + LangChain legal AI tool — cut attorney document review time by 73%.
✅ Next.js + Supabase multi-tenant SaaS with Stripe — zero to $45K MRR in 5 months.
✅ Cross-platform Flutter app — 50,000+ active users across iOS, Android, and desktop.
✅ OCR + GPT-4 + LangChain document pipeline for logistics — 8x throughput, same headcount.
✅ HIPAA-compliant clinical RAG system — delivered in 5 weeks.
✅ Loan-decision latency cut from 4.2s to 280ms for a Series-A lender.
✅ Author of ngx-mask — 2M+ monthly npm downloads, used in fintech, healthcare, and enterprise SaaS worldwide.
🛠️ WHAT I BUILD
→ LLM/RAG features — OpenAI, Claude, Gemini, ChatGPT, RAG pipelines, AI agents, multi-agent systems, agentic workflows, semantic search, vector databases, embeddings. Evals, latency, observability, fallback paths included.
→ AI SaaS platforms, MVPs & PoCs — multi-tenant architecture, Stripe billing, RBAC, onboarding, analytics, CI/CD. From validated PoC to production-grade platform without rebuilding from scratch.
→ AI workflow automation — n8n + LLM pipelines replacing manual ops, copy-paste, spreadsheet cleanup, CRM updates. Human-in-the-loop review flows. 10,000+ records/day at 99%+ accuracy.
→ Cross-platform apps — Flutter developer, React Native developer, Expo. iOS, Android, web, and desktop from one codebase. Real backends, auth, payments, analytics. 50K+ users delivered.
→ Production backends — Node.js developer, NestJS, FastAPI, Next.js API routes, Supabase, PostgreSQL, event-driven architecture. Fintech, legal tech, healthtech, logistics — compliance-ready from day one.
→ Codebase rescue & audit — stalled builds, prototype rewrites, architecture reviews. Salvaged a $200K stalled build in 3 weeks.
🏭 INDUSTRIES
→ FinTech AI — underwriting automation, payment flows, real-time risk scoring, compliance-ready backends.
→ HealthTech AI — HIPAA-compliant RAG, clinical document processing, patient-facing AI workflows.
→ Legal AI — contract review, document intelligence, LLM-powered research tools.
→ Logistics & E-commerce — OCR pipelines, routing automation, AI-powered search, inventory automation.
→ RevOps & Enterprise SaaS — AI lead scoring, CRM automation, multi-tenant platforms, developer tooling.
⚙️ TECH STACK
🤖 AI/LLM: OpenAI API · ChatGPT · Claude API · Gemini · GPT-4 · LangChain · LangGraph · LlamaIndex · Pinecone · pgvector · RAG · Prompt Engineering · Vector Search · Embeddings · AI Agents
🖥️ Frontend: React developer · Next.js developer · TypeScript developer · Angular · Tailwind CSS · Flutter developer · React Native developer · Expo
🔧 Backend: Node.js developer · NestJS · Python developer · FastAPI
🗄️ Databases: PostgreSQL · Redis · MongoDB · Supabase · Firebase
☁️ Cloud: AWS · Docker · Kubernetes · GitHub Actions · Vercel · CI/CD
⚡ Automation: n8n · Make · Zapier
🚀 WAYS TO START
→ AI SaaS PoC in 72 hours — validate before committing full budget. Fixed scope, fixed price.
→ MVP in 2–4 weeks — production-grade from day one. Not a prototype.
→ LLM/RAG system in 2–4 weeks — production-ready, not a demo.
→ SaaS web app — Next.js developer + Supabase + Vercel, Stripe, auth, RBAC, CI/CD.
→ AI automation pipeline — n8n + LLM replacing manual ops. Shipped and running.
→ Codebase rescue — stalled build, architecture audit, prototype rewrite.
→ Architecture consultation — 60-min deep-dive into your AI strategy or SaaS system design.
🚫 NOT THE RIGHT FIT IF YOU need execution without architectural thinking, are optimizing for the lowest rate over ROI, or want someone who disappears at handoff.
📩 READY TO BUILD? Send me what you're building, where you're stuck, and what done looks like. I'll respond with the right questions, a proposed architecture, and clear next steps — usually within a few hours.
Igor N.
has worked
.
Associated with
JSDaddy - AI Integration & Full Stack Development Company
$100K+
earned
Bulgaria
$25/hr
100%
Job Success
$30K+ earned
Start of list.
End of list.
I have over 10 years of experience in developing web applications. My expertise includes PHP, JS, Wordpress, Bootstrap, HTML and CSS. I always strive to bring the most value to any project by being professional, passionate about my work, and the quality I deliver.
Angel M.
has worked
.
$49/hr
100%
Job Success
$1K+ earned
Start of list.
End of list.
🚀 Custom web solutions - built to work.
I help businesses turn ideas and messy processes into clear, reliable systems — delivered on time and built to scale.
No freelancers to manage.
No unclear scope.
I handle everything from planning to delivery, so you know exactly what you’re getting and when.
Why Work with Me:
✅Clear timelines (1-2 weeks average delivery time)
✅Maintainable systems
After development, I provide a clear video walkthrough so you can manage and update the system without relying on me.
✅A - Z package
From planning and structure to design, development, testing, and final handover - everything needed to deliver a complete, working system.
My Typical Projects:
- Business management systems
- Admin panels & internal tools
- Dashboards & custom workflows
My Working Process
1 - Onboarding Questionnaire
You fill out a short onboarding questionnaire that helps me understand your business, goals, and requirements.
2 - Wireframe
I outline how everything will work together and show you the structure of the solution before development starts.
3 - Development
I develop the solution based on the approved plan and turn it into a fully working system.
4 - Testing
I test the system in real-world scenarios and refine details before final delivery.
5 - Handover & Guidance
I provide a short video walkthrough so you can easily manage and update the solution without relying on me.
📩 Send me your idea or current system, and I will record a FREE personalized VIDEO audit with suggestions on how to improve it or where to start.
Lyudmil K.
has worked
.
$35/hr
100%
Job Success
$7K+ earned
Available now
Start of list.
End of list.
I build automation systems that turn manual operations into reliable pipelines for B2B operators, marketing teams, and consultancies.
My focus is the intersection of n8n, GoHighLevel, and AI: lead generation workflows, CRM automation, AI agents (Claude, GPT, Vapi.ai voice agents), and the API plumbing that holds modern marketing operations together.
What I deliver:
🔹 n8n workflow architecture for lead routing, data enrichment, and multi-platform sync
🔹 GoHighLevel CRM setup, custom automations, sub-account configurations
🔹 AI-powered workflows with Claude API and OpenAI integrations: document classification, content generation pipelines
🔹 Voice agents on Vapi.ai connected to GoHighLevel, HubSpot, and custom CRMs
🔹 Webhook and REST API integrations between marketing tools, ad platforms, and operational systems
🔹 WordPress and WooCommerce custom development when automation crosses into web
Recent results:
✅ Real estate agency: automated multilingual listing pipeline through Google Sheets, DeepL translation, broadcast channels, and watermarked images. Replaced 2 to 3 hours of manual posting per listing.
✅ Consulting firm: Vapi.ai voice agent integrated with client CRM for inbound lead qualification and auto-tagging.
✅ Lead qualification system processing contacts in 10 seconds instead of 2 to 3 hours of manual review.
✅ WooCommerce automation handling 2,000+ SKUs through WP All Import and custom CSV transformations.
✅ Email classification and document processing pipeline with OpenRouter AI fallback for cost optimization.
Stack: n8n (self-hosted, 2+ years), GoHighLevel, Claude Code, OpenAI and Anthropic APIs, Vapi.ai, Supabase, JavaScript, Node.js, React, TypeScript, WordPress, Docker, Linux. Comfortable with REST APIs, webhooks, and integrating tools that don't have native connectors.
Why my background matters: 8+ years building web applications and 2 years running Google, Meta, and TikTok ad campaigns as a media buyer. I understand both the marketing funnel and the technical plumbing, which is a rare combination. I see automation gaps that pure devs miss and build solutions that pure marketers can't.
Availability: selective. Currently taking 1 to 2 additional contracts at 10 to 20 hours per week. I prefer retainer or longer engagements over one-off fixes.
How to work with me:
1. Send a message describing what you need to automate.
2. I respond within 4 hours with clarifying questions and rough scope.
3. We agree on scope, timeline, and deliverables before any work starts.
4. I build, document, and hand off with clean operational notes.
If you're looking for a $5 quick fix or template installation, I'm not the right fit. If you want production-grade automation that actually works at scale, let's talk.
Alexander C.
has worked
.
$40/hr
100%
Job Success
$3K+ earned
Offers consultations
Start of list.
End of list.
I help businesses build, fix, and scale web systems across three high-value areas:
💻 1. Full-Stack SaaS & Web Applications
React, TypeScript, Python, FastAPI, Supabase, PostgreSQL, dashboards, internal tools, MVPs, API integrations, and custom business platforms.
🛒 2. WordPress & WooCommerce Development
WooCommerce stores, Elementor Pro websites, checkout optimization, B2B product catalogs, SEO improvements, speed optimization, database cleanup, and custom WordPress/PHP functionality.
🤖 3. AI-Assisted Development & Automation
AI workflows, OpenAI, Claude, Gemini, LLM-assisted workflows, automation pipelines, data processing, technical architecture, and QA-focused implementation.
🎯 My focus is not just writing code.
I help clients turn unclear technical problems into working, stable, business-ready systems.
🏆 Recent work includes:
✅ Full WooCommerce redesign with checkout improvements, SEO optimization, dynamic product specifications, database cleanup, and performance improvements.
✅ SaaS trading analytics platform built with React, Python/FastAPI, Supabase, PostgreSQL, authentication, dashboards, and risk-management logic.
✅ Technical troubleshooting, API integrations, frontend fixes, performance improvements, and system cleanup for existing projects.
🧩 What I can help you with:
✅ Build or improve a SaaS MVP
✅ Fix broken or slow WordPress/WooCommerce websites
✅ Improve checkout, SEO, and site speed
✅ Build dashboards, admin panels, and internal tools
✅ Connect APIs and automate manual workflows
✅ Review messy codebases and create a clear technical execution plan
🛠️ Tech stack:
React, TypeScript, JavaScript, Python, FastAPI, Supabase, PostgreSQL, WordPress, WooCommerce, Elementor Pro, PHP, REST APIs, AI tools, and automation workflows.
If you need a developer who can think through the business goal, plan the technical structure, and execute cleanly, send me a message with the project details.
$33/hr
100%
Job Success
$10K+ earned
Start of list.
End of list.
I build websites on a modern stack (Astro + Sanity) — fast, easy to manage, and structured so both people and AI crawlers can find them in search and understand what they're about. I build from scratch and migrate existing sites from Webflow, WordPress, and Framer.
More details
My stack is Astro + Sanity + Tailwind, deployed on Cloudflare Pages. I work in two directions: building sites from scratch, and migrating existing ones onto this stack.
Most of my work is content-driven sites — where the content itself is the core of the project and needs to be easy to manage and grow. All text, meta tags, and Open Graph live in Sanity, so the owner can edit everything without touching code. I migrate from Webflow, WordPress, and Framer when a project starts hitting the limits of those platforms — performance, accessibility, or how far you can push the content structure. The design stays the same; the site just gets faster, cheaper to run, and easier to extend.
Performance is my main focus — that's why I chose Astro. The sites I build score 90+ on mobile in Lighthouse, often reaching 100. I use static generation by default and add server-side rendering only where it's actually needed, like filtered catalog pages, so the client isn't overloaded.
On SEO, I set up the basics from the start: semantic HTML, clean heading hierarchy, valid structured data (Schema markup), sitemap, canonical URLs. Search is shifting, though — AI crawlers and assistants prefer fast, well-structured sites, and semantics and accessibility now matter not just for people but because they make content easier for machines to read. So alongside classic technical SEO, I work on AEO/GEO and structure the content and data so both Google and AI understand the context without guessing.
On scope: I'm not a designer, SEO strategist, or copywriter — I don't do keyword research or write content. But I work closely with designers, and I'll build the content model, set up relationships between collections, and structure the site so the right pages are reachable in a couple of clicks.
When a project genuinely needs a no-code builder or Shopify for a store, I'm comfortable with those too. I pick the tool based on what the project actually needs.
Bulgaria
$70/hr
$200K+ earned
Start of list.
End of list.
Full-Stack Web Developer
Hi, I'm Elvis. I'm a Full-Stack Web Developer with 9 years of experience building all kinds of Web, Mobile, and Desktop applications. I've worked with clients from many different industries, helping them turn their ideas into real, functional products.
Most of my work is around modern web technologies — HTML, CSS/SCSS, JavaScript/TypeScript, Python, and .NET C#. I enjoy building clean, user-friendly frontends and solid, reliable backends. Along the way, I've integrated lots of third-party services like PayPal, Stripe, WhatsApp, Telegram, Google APIs, and more.
I'm comfortable working with databases such as SQL, MySQL, PostgreSQL, and MongoDB.
I've also deployed projects to AWS, GCP, Vercel, Hostinger, and other hosting platforms.
Beyond traditional development, I work on AI code evaluation — creating rigorous coding tasks, writing test suites, reviewing AI-generated code for correctness, and performing detailed QA analysis. This involves deep code review across multiple languages, writing technical specifications, and verifying everything through Docker testing pipelines.
If you already have UI/UX designs, I can bring them to life using React/Redux, Angular, Material-UI, Nebular, Bootstrap, and similar tools.
Other tools and skills I use regularly:
Git (advanced workflows — patches, diffs, rebasing, multi-repo work)
Docker for testing and deployment
Technical writing — specs, QA reports, task descriptions
A few things about how I work:
I follow modern standards and good development practices
I like writing clean, organized, readable code
I'm persistent and always learning
I'm honest about my hours and prefer long-term collaborations
Feel free to check out my portfolio and reviews. If you think I might be a good fit for your project, I'd be happy to talk.
Elvis A.
has worked
.
$45/hr
100%
Job Success
$30K+ earned
Available now
Offers consultations
Start of list.
End of list.
I build AI automation and full-stack apps that turn weeks of manual work into minutes. Shipped production for Fortune 500 pharma, a European telecom, and a global HR platform used by millions. Node.js, Next.js, OpenAI, n8n, Supabase, TypeScript.
For the last 5+ years I've worked on the hard end of web engineering: enterprise backends, multi-agent AI pipelines, and internal tools that replace full manual workflows. Not demos. Production systems that run daily, get audited, and actually save teams hours of repetitive work.
SELECTED PROJECTS (anonymized where under NDA):
- AI tender intelligence platform for a Fortune 500 pharma client. A multi-agent n8n pipeline where scraper agents pull daily tender postings from country-specific sites, LLM agents classify and score them against the client's product portfolio, irrelevant results get filtered out, and only qualifying opportunities reach the human review dashboard. Replaced hours of daily manual review across a team of analysts.
- AI document-to-learning-materials platform for a Fortune 500 pharma client. Ingests regulated medical documents, breaks them into semantic sections, and agents generate quizzes, exams, Q&A, presentations, and multilingual study content that exports ready-to-use.
- End-to-end AI video generation platform. Agents produce scripts and scene breakdowns, then generate full videos from them. A browser-based editor lets users trim, reorder, add transitions, and keep character references consistent across scenes. Output that would take a video team weeks to months ships in minutes.
- SaaS job board platform on Next.js 16, Supabase, Stripe, and Claude API. Led the technical side: full security hardening, Server Component architecture, early-access email flows, staging environment on Vercel, performance work.
- AI skills-matrix platform for enterprise staffing. Semantic search across a people database by role, skills, certifications, and years of experience. AI suggests complete teams for incoming client projects, leads approve with one click, and branded CVs auto-generate for client pitches.
- Campaign messaging platform for a European telecom carrier. Firebase infrastructure, WhatsApp Business API, Meta and Bird integrations, multi-tenant role-based access, audit logging. Used daily by operators to run customer campaigns at scale.
- HR platform infrastructure work on AWS. Multi-country deployment serving millions of users. Hands-on with the core AWS stack: Lambda, S3, RDS, EC2, CloudFront, IAM.
WHAT I BUILD FOR CLIENTS:
- AI agent workflows and n8n automations built on real business logic, not demo flows
- OpenAI, Claude, LangChain, RAG, vector search, semantic search, chatbots
- Web scraping combined with AI classification and scoring pipelines
- Full-stack SaaS and internal tools in Next.js with Supabase or Firebase
- Node.js backends, REST and GraphQL APIs, microservices, webhooks, Stripe, authentication, role-based access
- Third-party integrations across messaging, payments, auth, and data providers
- Production debugging and performance work on existing systems
HOW I WORK:
I read the business problem before I touch the IDE. If something in the brief is underspecified or risky, I flag it before we sign, not after the budget is spent. I write boring, reliable code that holds up in production, add proper logging and error handling so things do not fail silently, and I ship work that can actually be handed over.
TECH I WORK WITH:
Node.js, Next.js, React, TypeScript, JavaScript, Express, Fastify, NestJS, Supabase, PostgreSQL, Firebase, Redis, n8n, OpenAI API, Anthropic Claude API, LangChain, vector databases, pgvector, AWS, Vercel, Docker, Stripe, REST and GraphQL APIs, WebSockets, Playwright, Puppeteer, Remotion, Tailwind CSS, and others depending on what the project needs.
IF YOU ARE BUILDING:
An AI agent system, a workflow automation, an LLM-powered product, a scraping and intelligence pipeline, a Next.js or Supabase SaaS, a Node.js backend with REST or GraphQL APIs, microservices, third-party integrations, or a full-stack web app from scratch, send me a short description of the problem and the outcome you want. I'll reply with a concrete plan, risks, and next steps, not a generic sales pitch.
Ivelin I.
has worked
.
$40/hr
100%
Job Success
$5K+ earned
Offers consultations
Start of list.
End of list.
Hi, I’m Alek 👋
I help brands build and scale high-performing e-commerce websites that don’t just look good — they convert and grow revenue. I work across Shopify, Framer, WordPress, and Webflow, combining strong design with smart structure, clear UX, and growth-focused execution.
Over the past 4+ years, I’ve worked with 250+ brands globally, helping clients reach results through better websites, cleaner funnels, and more effective marketing systems.
I focus on long-term value, not quick fixes.
⸻
🔑 What I Do Best
Shopify Development & Customization
(themes, custom sections, Liquid, performance & checkout optimization, CRO)
Framer, WordPress & Webflow Builds
(modern, fast, responsive websites built to show-off your business )
AI Automations & Integrations
(chatbots, workflows, internal tools, process automation)
Conversion Rate Optimization (CRO)
(turning traffic into customers)
Social Media Marketing & Growth
(Instagram & TikTok strategy, content, campaigns)
Paid Ads & Funnels
(Meta & Google Ads focused on ROI, not vanity metrics)
SEO & Analytics
(clean structure, tracking, and data-driven decisions)
⸻
🌍 Why Clients Work With Me
4+ years of hands-on experience in e-commerce & digital growth
Strong business and finance background, not just design
Clear communication and fast execution
Trilingual: English, Bulgarian, Italian
Focused on scalable results, not one-off projects
💡 If you want a website that supports real growth — not just a “nice design” or a person who will help you scale your business long-term and help you reach unimaginable results — let’s talk.
Check out my portfolio below or message me, and I’ll show you how I’d approach your brand.
Alek Markov
Alek M.
has worked
.
$50/hr
100%
Job Success
$300K+ earned
Start of list.
End of list.
I have an extensive background and a 14+ years of experience in senior level graphic/web/mobile design, UI architecture, User Experience design and CSS/HTML coding.
I have the ability to work on multiple design tasks delivering the results in a business relevant context. I am well versed in the complete technology life cycle from design to implementation.
My main focus of work is Ecommerce UI design, UX/UI architecture of mobile and web app design, 10-foot UX design, second-screen app design.
Anna N.
has worked
.