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Hi there! My name is Nikolay Panev and I'm a full-stack web developer with 10+ years of experience. I specialize in building custom web applications from ground up. I've had the opportunity to work on diverse projects, ranging from innovative laboratory management systems (LIS/LIMS) and healthcare tools to scalable platforms for the real estate and e-commerce sectors. I specialize in leveraging modern JavaScript frameworks, specifically Vue 3 and Nuxt, to build high-performance front-ends paired with scalable LAMP/LEMP and Node.js infrastructures, complex API integrations and Git version control. If you're looking for a skilled and reliable developer to help you bring your vision to life, please don't hesitate to get in touch.

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.

⭐️⭐️⭐️⭐️⭐️ 𝟱-𝘀𝘁𝗮𝗿 Web Developer on Upwork 👨‍💻 I'm a passionate engineer specializing in Vue.js and Laravel. With years of experience, I provide top-tier web solutions and skilled IT personnel to elevate your projects. Whether you need bespoke web applications or additional tech talent, I'm here to deliver excellence. 𝐌𝐲 𝐦𝐚𝐢𝐧 𝐬𝐤𝐢𝐥𝐥𝐬: ・Vue, NuxtJS, GraphQL, Next, React. ・Open AI enthusiast. ・JavaScript (ES6-ES8), Typescript. ・NodeJS, Express. ・MongoDB, PostgreSQL, MySQL. ・Scss, Sass, PostCSS, HTML5, CSS3. ・Building maintainable design systems with Storybook. ・Client-side performance including AMP and PWA apps. ・Accessibility, 508 Compliance support. ・SEO Optimization. ・Cross-browser/cross-platform manual testing. ・Automation QA: Cypress, Puppeteer, Playwright, Jest, Selenium. ・Tooling: Webpack, Git, NPM. I am an accomplished web developer with extensive expertise in full-stack development, specializing in both front-end and back-end technologies. My skill set includes proficiency in HTML5, CSS3, and JavaScript (JS), along with experience working with frameworks and libraries such as Vue (VueJS), Node.js, Express.js, TypeScript, React, Next.js, and Nuxt.js. I excel in creating scalable web applications, leveraging tools like Gatsby and GraphQL to build dynamic, data-rich websites. On the front-end, I utilize frameworks like Bootstrap, Tailwind CSS, and Sass to craft responsive and user-centric interfaces. For back-end development, I have a strong background in integrating and managing databases, including MongoDB, PostgreSQL, MySQL, and DynamoDB. My experience extends to deploying and managing applications on cloud platforms such as AWS, Google Cloud Platform, and Microsoft Azure, ensuring reliable and efficient solutions. I specialize in RESTful API development and integration to facilitate seamless communication between application layers. I am adept at version control and collaborative workflows, utilizing tools like Git, GitHub, and Bitbucket. Additionally, I have experience with Firebase for real-time database solutions and Cypress for comprehensive testing of web applications. My expertise also includes SaaS development, crafting tailored Software-as-a-Service solutions to meet diverse business needs. I am proficient in CMS development across platforms like Shopify, HubSpot, Strapi CMS, and Ghost CMS, delivering highly customizable content management systems. Whether it’s building a Shopify application, a static site, or a bespoke CMS, I ensure top-notch quality in every project. I thrive in agile development environments, leveraging tools like Jira, Trello, and Asana to streamline project workflows and deliver on time. For effective team communication, I rely on platforms like Slack and Google Meet to stay aligned with clients and colleagues throughout the project lifecycle. With my comprehensive experience in full-stack development, front-end design, and web application deployment, I am well-equipped to handle every phase of web development, ensuring innovative and high-quality outcomes for my clients. ⭐ 5/5 "I wholeheartedly recommend Voidweb's services to others. They played a pivotal role in achieving my MVP goals and provided invaluable insights" - Jonas S. / Studyquick ⭐ 5/5 "One of the most impressive aspects of Voidweb was their attention to detail and ability to bring our design vision to life. They accurately captured our brand identity and translated it into a visually stunning website. Their expertise in user experience and responsive design was particularly noteworthy." - Aneliya I. / Cyris ⭐ 5/5 "We are pleased to say that Voidweb met every aspect of our project's demands and delivered on time, even for the most challenging issues. Their responsiveness was both efficient and effective, ensuring that our needs were always addressed promptly. Overall, we are extremely satisfied with their project management and the services provided" - Douglas Insights

I am an enthusiastic, reliable, and hardworking person with a great experience in Software Engineering with a strong Business background. I am excited about developing software applications, applying models and techniques, and finding insights. Along with developing software, I am extremely interested in the Business part of the ICT industry. I graduated from Fontys University of Applied Science with a degree in Software Engineering. As part of my Bachelor's study, I have done an internship at SIEMENS, Onmi, and a minor program in Data Science along with a tons of other projects. I am an experienced and knowledgeable user of tools such as Python, Javascript, PHP, and libraries including Laravel, React, Scikit-learn, Pandas, Numpy, etc. in addition to C#, Java, HTML, and CSS. After that, I've been working for multiple companies and clients on multiple complex projects of all sizes.