I am an AI Agent and Automation Developer with 12+ years in software engineering, the last 5 focused entirely on AI agents, machine learning systems, LLM applications, RAG pipelines, and workflow automation that ships to real users. n8n Automation & AI Agents I build n8n workflows and Make,com or Zapier when they fit better for lead routing, data sync, content pipelines, support triage, and internal reporting. When a workflow needs to think rather than just follow rules, I integrate AI agents powered by GPT-4, Claude, or open-source LLMs so they make decisions autonomously. AI Voice Agents & Conversational AI I build AI voice agents using Vapi and Retell that handle real phone calls, qualify leads, book appointments, and answer customer queries trained on your scripts and connected to your CRM. Beyond voice, I develop conversational AI assistants, multi-agent systems, and agentic workflows where multiple AI agents collaborate to complete complex tasks end to end without human intervention. Machine Learning & Deep Learning I design and deploy machine learning models and deep learning solutions using PyTorch and TensorFlow from data preprocessing and model training to fine-tuning pre-trained models on your custom dataset. Whether you need a classification model, NLP pipeline, recommendation engine, or a neural network built from scratch, I build it production-ready with proper testing and monitoring. Chatbots & Generative AI Apps GPT-4, OpenAI, LLaMA, Claude I use whatever model fits the use case and budget. That covers the full stack: model selection, fine-tuning on your data, building a RAG pipeline with LangChain or LlamaIndex, vector database setup with Pinecone or ChromaDB, and deploying to production. Support bots, sales assistants, internal knowledge agents I have built them all. API Integration & System Connectivity Most AI projects die at the integration step. I make sure yours does not. REST APIs, webhooks, OpenAI and Claude API integration, CRM and database connectivity, Slack, Notion, internal dashboards whatever your stack looks like. A few things worth knowing: → I push for a small prototype before a full build faster, cheaper, and proves the idea works in your real environment → I write production code tests, error handling, logging, retry logic the unglamorous stuff that keeps your project running in six months → I will tell you when AI is not the answer if a Zapier flow beats a custom machine learning model, I will say so Core Stack: Python · n8n · LangChain · LlamaIndex · OpenAI API · Claude API · GPT-4 · LLaMA · Vapi · Retell · Voice AI · RAG Pipelines · Machine Learning · Deep Learning · Neural Networks · PyTorch · TensorFlow · Pinecone · ChromaDB · FAISS · Make,com · Zapier · Docker · AWS · Google Cloud · REST APIs Got a project in mind even half-formed? Send me a message and I will tell you honestly whether I am the right person for it.

Professional Summary Senior Full Stack Engineer with 11+ years of experience leading full-lifecycle development of secure, scalable systems across fintech, retail, and SaaS domains. Built and scaled platforms handling up to 3M+ users, reduced deployment cycles by 70%, and improved API efficiency by over 85%. Adept at aligning cross-functional teams, integrating modern microservices, and leading architecture efforts that improve uptime and performance.

PHP/Laravel/Wordpress/JavaScript/jQuery/Angular/React/Vue/Adonis/Flutter, PSD to HTML, CSS/SCSS/SASS/Bootstrap, HTML developer. About 10 years experience. Looking for long term cooperation with great results.

I specialize in building custom WordPress websites from scratch - writing lean, clean, and well-structured code to convert your design into a user-friendly, lightweight, and high-performing product. I pay close attention to detail and deliver fully responsive and pixel-perfect results. ✅ Figma/PSD/Sketch/InDesign to WordPress conversion ✅ High performance, fully responsive, and pixel-perfect websites ✅ Clean and SEO-friendly coding practices ✅ Intuitive and user-friendly content management through Advanced Custom Fields ✅ Dedication to quality and a keen eye for detail I've been in the business since 2014, building experience at digital marketing agencies before starting as a freelancer in 2018. I have worked for private individuals, small and medium-sized enterprises, startups, and marketing agencies in need of a specialist for their projects. Let's take your website to the next level. Just send me a message and we'll discuss the possibilities. I look forward to hearing from you.

Hands-on senior full-stack engineer and technical lead with 15+ years of experience delivering and leading complex web platforms in public-sector, telecom, and enterprise environments. I specialise in TypeScript-based platforms (React, Node.js, NestJS) with a strong focus on architecture, developer experience, testability, and long-term maintainability. I intentionally remain hands-on in production codebases, combining technical leadership with day-to-day implementation, design, and refactoring work. Over the past five years I have worked as an independent contractor for the Municipality of Amsterdam, where I led platform modernisation initiatives including monorepo adoption (Nx), CI/CD standardisation, cloud migration (Azure), and systematic technical-debt reduction. I also introduced pragmatic AI-assisted development workflows to improve reliability and delivery speed without compromising code quality or review standards. I am currently based in Spain and work fully remote. Where valuable for alignment or key milestones, I am open to occasional travel within the EU (e.g. 1–2 days per month), while remaining remote-first by default.

With more than 20 years of experience in Web Application Development, API Integration, Application Migration, and Support, I’ve had the opportunity to work with leading global organizations including Rabobank, Valspar, Sherwin Williams, TCS, Commonwealth Bank, Walgreens, and Tata Steel Europe. I’ve also partnered with small start-ups and mid-sized companies to help them build and scale their digital solutions. I specialize in automating back-office processes and developing scalable web applications using Laravel and .NET, with front-end expertise in React, Bootstrap, and Tailwind CSS. For eCommerce solutions, I work extensively with Magento and WooCommerce, including building connectors and integrations that link eCommerce platforms with ERP systems and booking systems. My skills also include NetSuite ERP (Workflows and SuiteScripts) and Zoho Creator (Deluge scripts and workflows). Additionally, I have strong experience in deploying and managing applications on Microsoft Azure using CI/CD pipelines, along with application upgrades, cloud migrations, and performance optimization. As an Entrepreneur, IT Consultant, Problem Solver, and Digital Partner, I bring a wealth of experience to empower companies of all sizes. Services We Provide: - Backend Development Service using .Net, Laravel & PHP - Adobe Magento 2 Development Services - ERP Integration using Custom Connectors - Third Party Integrations with API Connections - Application Migration Service to Microsoft Azure - Frontend Development Service using ReactJS, Angular JS, JQuery, HTML 5, CSS 3, Bootstrap - Full Stack Development Service - Application Development & Support Service - API Development Service & API Integration Service - E-Commerce & Web Shops Service using Magento 2.0, Woo-Commerce & PrestaShop Technology Stack: - E-Commerce - Magento 2, Woo-Commerce & PrestaShop - Backend: C#.NET, .Net Core, Web APIs, MVC, Razor, Laravel, CodeIgniter & PHP - ERP - Oracle NetSuite & Zoho Creator - React JS and Angular JS - Microsoft Flow - Power Automate - CI/CD pipeline - Azure DevOps, TeamCity, Classic & YAML Pipelines - Git, GitHub, Bitbucket - HTML 5, Bootstrap, JavaScript, JQuery - MS SQL and MySQL databases

Your WordPress site should win you customers, not load slowly, break on mobile, or look like every other template. I build fast, high-converting WordPress and WooCommerce sites for businesses across the EU and US, and I can go full-stack (React, Laravel, headless) when a project needs more than a page builder. I'm Jari, an EU-based developer in the Netherlands with an engineering degree and 5+ years building and fixing WordPress, WooCommerce, custom themes and plugins, Laravel apps and Magento stores. ✅ 𝗪𝗵𝗮𝘁 𝗜 𝗱𝗼 • Custom WordPress and WooCommerce sites that are fast, clean and easy to manage • Speed and Core Web Vitals optimization (real fixes, not just a caching plugin) • Conversion-focused builds and redesigns that drive leads and sales • Headless WordPress (WP + React/Next.js) and custom PHP/Laravel when you need it • Bug fixes, rescue jobs, migrations and ongoing maintenance/care plans ✅ 𝗪𝗵𝘆 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝗵𝗶𝗿𝗲 𝗺𝗲 • I find the real problem first. I don't bolt on 15 plugins to fix what one clean solution handles. • EU-based, so you get full timezone overlap with European clients, afternoon overlap with the US, and your data stays under EU/GDPR jurisdiction by default. • Native Dutch, fluent English, conversational French and German, so communication is clear and fast with no language friction. • Engineering background, verified ID and military-veteran reliability. I scope clearly, deliver on time, and stick around for support. ✅ 𝗥𝗲𝗰𝗲𝗻𝘁 𝗽𝗿𝗼𝗼𝗳 "Jari worked fast and reliably to fix a critical issue I had with my WordPress contact form. He knew exactly where to look and checked everything. Within less than 24 hours the form worked like a charm. Would definitely work with him again!" (Ronnie L.) "Excellent service from Jari at Rengelmedia. He updated the portfolio on my website exactly according to my wishes. Communication was clear, he made sure we were on the same page, and he was transparent about the time needed and the final price. Very happy with the quality of the work. Highly recommended!" (Ricardo V.) "Outstanding experience every single time. Consistently above and beyond my expectations, delivering high-quality work with great attention to detail. Communication is smooth, deadlines are always met (often even earlier), and the results truly speak for themselves. I highly recommend to anyone looking for reliable and top-tier service!" (Patrice E.) ✅ 𝗧𝗲𝗰𝗵 𝗜 𝘄𝗼𝗿𝗸 𝘄𝗶𝘁𝗵 WordPress, WooCommerce, Elementor, custom themes and plugins, PHP, Laravel, React, Next.js, Vue, Node.js, Tailwind, MySQL/PostgreSQL, Git, Docker. Core Web Vitals, page-speed and on-page SEO baked in. If you need a WordPress site that's fast, reliable and actually converts, or a developer to rescue one that isn't, send me a message with your goals and I'll tell you honestly how I'd approach it.

I build AI workflows that replace 10+ hours of manual work per week. Security-hardened by default. Your team is wasting hours on manual work that AI can handle in seconds. I build the automations that fix that. Using n8n, AI (Claude/GPT), and custom API integrations, I create workflows that process emails, qualify leads, sync CRMs, and run chatbots without anyone touching a button. What I build: - n8n workflow automations that replace 10+ hours of manual work per week - AI chatbots trained on your business data (RAG / retrieval-augmented generation) - API integrations connecting your CRM, email, ERP, and internal tools - React dashboards and web apps with Supabase backend Unlike most automation freelancers, I come from 8 years in cybersecurity (military + OSCP-certified ethical hacker). Every workflow I build handles credentials, API keys, and sensitive data securely from day one. No leaked keys, no exposed endpoints, no shortcuts. Fast delivery. Clear communication. Systems that actually work in production. Let's talk about what's slowing your team down.

Hi, I'm Vasislav 👋 I've saved clients over $100K/yr for 7-and-8-figure businesses with automation. Some big names: Intersport (€14B/yr rev), Sportcity (€100M+/yr rev), both of which I helped with automating processes. Looking forward to meeting you! Key Results: - Built automation software saving $80K/year and 250 hours/month while improving accuracy - Created platform MVP saving $50K for founder - Consulted for $500K+/month business on automation strategy - Developed cold outreach system generating $48K in sales - Built IG automation system that generated 1,000+ qualified leads - Created cold outreach system generating $7K in revenue - Built customer support agent and data transformation systems for enterprise clients - Compressed multi-day business process to 5 minutes with custom automation I've also worked with Intersport (14 Billion in Revenue for 2023) where I've automated internal processes. The longer, sit-down version (if you've got a minute): Pleasure to meet you! I'm Vasislav 👋. I've built and scaled automation systems for 7-and-8-figure businesses, including Intersport (14 Billion in Revenue for 2023), using cutting-edge tools like GPT-5, n8n, Make, Zapier, and Node.js. I've created dozens of systems - many of them responsible for hundreds of thousands in revenue and/or savings. My favorites include: Automatic lead gen & outreach systems (to magically source leads, qualify them, and reach out to them using email/SMS/social media with customized, AI-generated icebreakers), Business process automation systems (to compress multi-day workflows into minutes, automate data transformations, streamline operations, and eliminate manual work that costs thousands in labor hours), Customer support & engagement systems (to automatically handle customer inquiries, manage onboarding workflows, schedule social media content, and integrate with CRMs for seamless client management). I also have experience with more or less every major automation and CRM platform (think n8n, Make, Zapier, Airtable, Monday, ClickUp, HubSpot, Go High Level GHL, etc) and have built dozens of custom API integrations for added functionality. If you're looking for someone passionate about process automation, and who loves devising meticulous systems that last, I'm your guy. Whether you work with me for a day, a week, or a year, you'll get high-quality builds and fantastic communication the whole way through. Looking forward to meeting you!

If your team is copying data between tools, chasing information across apps, or spending hours on work that should take minutes - you're not alone. I help growing teams eliminate the manual work that's blocking their growth. I build automation systems using Make.com, n8n, and custom integrations that connect your tools and eliminate repetitive work. Whether it's CRM chaos, manual onboarding processes, or reporting nightmares, I design systems that just work. 🚀 RECENT PROJECTS: 🔹 CRM Automation for Nonprofit - Built Google Sheets + SendGrid system managing 11-agent workflow, eliminating manual email tracking and data entry. Enabled real-time visibility and automated follow-ups. 🔹 WordPress Form Processing - Automated form submission handling, validation, and data routing across multiple systems. Removed hours of weekly manual data entry and eliminated copying errors. 🔹 Data Extraction System - Created automated system processing 45,000+ exam records with complex validation rules. Transformed weeks of manual work into hours of automated processing. 🎯 COMMON PROBLEMS I SOLVE: 🔹 Sales & CRM Chaos - Your lead data lives in 5 different places. Sales reps manually copy information between tools. Deals fall through cracks because follow-ups are forgotten. I build automated lead capture and routing, unified CRM sync, automated follow-up sequences, and deal stage tracking with notifications. 🔹 Customer Onboarding Bottlenecks - New customers wait days for setup while your team manually creates accounts, sends emails, and provisions access. Each onboarding follows a different process. I build automated customer provisioning, welcome sequence triggers, account setup workflows, and progress tracking dashboards. 🔹 Reporting Time Sink - Your team spends 10+ hours monthly compiling reports by manually copying data from multiple tools into spreadsheets. By the time reports are done, they're outdated. I build automated data collection, real-time dashboards, scheduled report generation, and customized views for different stakeholders. 🔹 Integration Gaps - Your tools don't talk to each other. Customer support tickets live separately from your CRM. Invoicing requires manually copying data from 3 sources. I build two-way API integrations, automated data synchronization, centralized data workflows, and custom middleware when needed. 🔹 Manual Quality Control Issues - Human errors in repetitive processes damage customer relationships. Data entry mistakes create downstream problems. Inconsistent processes mean different team members handle things differently. I build validation systems, error checking workflows, standardized process automation, and audit trails for compliance. 💡 WHY COMPANIES WORK WITH ME: 🔹 I Redesign, Not Just Automate - Most consultants take your existing process and speed it up 2x. I look for opportunities to redesign workflows from scratch, often finding 10x improvements. Sometimes the answer isn't automation at all, it's changing how you approach the problem. 🔹 I Speak Both Technical and Business - With 15 years of software engineering experience at startups and enterprises, I can build custom solutions when your needs outgrow simple tools. But I excel at explaining technical concepts in business terms and focusing on ROI, not just technical elegance. 🔹 I Can Go Custom When Needed - Most projects work great with Make.com or n8n. But when you hit edge cases - complex data transformations, custom API endpoints, legacy system integration - I can write actual code. This flexibility means you're not boxed in by tool limitations. 🛠️ WHAT I BUILD WITH: 🔹 Primary Tools: Make.com, n8n, Zapier 🔹 Integration Specialties: CRMs (HubSpot, Salesforce, Pipedrive, Close), Marketing (SendGrid, Mailchimp, ActiveCampaign), Databases (Google Sheets, Airtable, PostgreSQL, MySQL), Forms (WordPress, Typeform, Google Forms), Communication (Slack, Teams, SMS via Twilio), Custom APIs and webhooks 🔹 Technical Capabilities: RESTful API integration and authentication (OAuth, API keys), data transformation and validation logic, error handling and notification systems, database design for scalable workflows, custom code when automation tools hit limits (JavaScript, Python, Ruby) 👥 WHO I WORK BEST WITH: 🔹 Growing companies (10-100 employees) hitting process scaling walls 🔹 Teams spending 10+ hours/week on repetitive manual work 🔹 Businesses with data scattered across 3+ tools 🔹 Companies ready to invest in operational efficiency Message me with your biggest manual work headache. I offer a free 15-minute consultation where I'll tell you honestly whether automation can solve your specific problem, what approach would work best, rough timeline and investment needed, and if I'm not the right fit, I'll tell you that too. No obligation. Just clear answers.