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I'm a backend PHP developer with over 17 years of experience in the industry (PHP Zend certified engineer). I've worked with the Symfony and Laravel frameworks for more than 10 years, completing various projects such as online applications systems, call centers, career sites, and eCommerce platforms. I have extensive experience in building API endpoints and clients. Have big experience with Symfony API Platform. In addition to Symfony and Laravel, I have experience with Twig/Blade, Doctrine/Eloquent, RabbitMQ, Redis, Docker, and REST/GraphQL. I deliver clean, high-quality code and can work in an agile, scrum environment if needed. I'm also familiar with TDD/BDD testing. My skills include object-oriented programming, design patterns, and OOP principles such as SOLID, DRY, and YAGNI. I'm enthusiastic about writing clean code and have experience with PHPUnit/functional testing, Git, SVN, and Mercurial. I have database design and optimization expertise, specifically with Postgresql, Mysql/Mariadb, and Oracle. I'm also familiar with Debian, Ubuntu, and Centos Linux distributions. As an API expert, I've worked with various 3rd-party APIs, including: - email marketing platforms like Aweber, GetResponse, Mailchimp, Sendgrid, ActiveCampaign, ConvertKit, SendinBlue, Maileon, Brevo. - shipping carriers such as DPD, DHL, UPS, and PostNL - payment systems like PayPal, Stripe, PromisePay, FatZebra, Authorize.net, Cybersource, Emerchantpay, Adyen and many other - hosting and DNS providers like Linode, DigitalOcean, and GoDaddy - social media platforms such as Dropbox, Facebook, LinkedIn, Twitter, and Instagram - other APIs like Jetcom, TaxJar, and Telegram Bot API

I can't say for sure but I have the impression that very few people (if any) in the IT field have read the "Message to Garcia" by Elbert Hubbard. I have read it and I dare to consider myself one of the people, who are able to "bring the message". There always will be someone who is more creative, knows more or works faster than me. I am aware of that and I accept it. Still, I am quite confident of being a better prepared professional than the average IT guy. I have 20 years of experience in programming, database modelling, system design and architecture, business processes analyses and automation, basic managerial accounting, Linux and network administration, Asterisk (FreePBX) configuration. I have successfully solved various business-related software and hardware challenges. Being able to combine both low-level and high-level allows me to work on wide range of tasks. I have reverse engineered and fully decompiled about a dozen Delphi components and desktop applications. Assembler was my 2nd language (after BASIC) and my first significant application was a player for tracker music entirely written in Assembler - with bass/treble digital filters. I like digging deeper and understanding the root cause. I am quite good at debugging and troubleshooting - and this is not an empty claim. Some of my achievements: - developed 2 full-blown ERPs (for Walltopia and Composite-X) - developed 2 accounting / warehousing applications with OLAP reporting and hierarchical multi-dimensional accounts - developed Windows service daemon for logging Skype chats to a REST API in real-time - ported one large desktop application (Interactive Delphi Reconstructor) from Borland CBuilder to Delphi - implemented a company-wide real-time backup solution using Yadis or Bvckup, Samba and NappIT on OpenIndiana - developed Linux daemon for controlling large LED strips based on WS2811 (and organized into X/Y matrix) through TCP/UDP socket - developed combined CDR reporting, matching information from the local Asterisk PBX with billing information from the VoIP providers - implemented Linux daemon for reading SMDR/CDR data from Panasonic PBX TDA-200 and storing in MySQL with reporting capabilities - developed custom reporting module for a 3rd party security access control system and integrated it with the in-house ERP system I choose my clients as carefully as you choose your freelancers. I value honesty, respect, good communication, good sense of humor, intelligence, modesty, kindness, generosity. I prefer to develop from scratch custom business solutions automating the workflow of small businesses. My previous experience with the 2 ERP systems I already developed (and which are used 24/7 by customers and employees) is of enormous benefit. I feel truly happy when I am able to help a client by removing the burden and simplifying the workflow. What can you expect from me: - educating and explaining the things which are too technical and unfamiliar to you - asking good questions - providing meaningful advises and recommendations - not trying to suck additional money by finding extra work of low business value - understanding your real business needs and goals - keeping you from making worthless or unwise expenses - excellent responsiveness - taking precautions against damaging your data - really listening to you and your problems/pain points - acknowledging my faults - enjoying good jokes - not quietly disappearing after faced with some tough challenge - honestly admitting when I do not know something or not being qualified enough - not over-complicating the solution - being available for support and further assistance after the final deployment - solving difficult problems - positive skepticism - breadth of knowledge - ability to “finish” - introspective, self-motivated to constantly improve - perseverance, scrappy in the face of setbacks, doesn’t “get blocked” - systems design ability - empathy for users - taking pains to write readable and maintainable code - methodical and analytical: can diagnose the most mysterious bugs or find the source of performance bottlenecks

Building products end to end — architecture, backend, frontend, deployment — and staying involved long enough to make sure they actually work in production. Most of my recent work has been with early-stage and growth-stage companies where I was the person making the technical decisions, not just executing them. That includes a tournament platform that reached thousands of users within weeks of launch, a live locker booking system with real-time availability and payment integration, and an AI-powered trading assistant built on the Claude API with structured market analysis and Telegram notifications. I work across the full stack: Backend: Laravel, Django, Python Frontend: SvelteKit, React, React Native Databases: PostgreSQL, MySQL, MSSQL Infrastructure: Docker, CI/CD pipelines, AWS, Azure AI: Claude API integrations, multi-agent workflows, agentic automation Portfolio: dev.metchev.net Beyond development, I help teams with architecture planning, codebase audits, Git workflows, and technical hiring. PMI-ACP certified — useful when delivery structure matters alongside the technical work. I have worked with enough non-technical founders to know that the technical explanation is rarely what they actually need. What matters is whether the product does what it should, on time, without surprises. If that sounds like the kind of person you are looking for — reach out.

Python full stack developer. I am an expert full-stack developer with 21 years of experience. Expert in building complex full-stack applications. I have built complex systems for different clients ranging from a telecom company to a real estate agency. The skills I can serve are as follows: Frontend: React, Jquery, Html5, JavaScript, bootstrap, and different chart libraries. Backend: Django, Celery. Databases: Postgres, SQL, and MongoDB. Version Control : Git API: WebAPI like REST, SOAP, JSON Testing tool: Pytest 4 Reasons You Should Hire Me 1. You will receive QUALITY work. I only bid on projects I know I can excel in. I aim to meet and even exceed client expectations. 2. You will receive deliverables ON TIME. My experience in the industry has taught me the importance of meeting deadlines. 3. You will work with an excellent communicator. I will update you on my progress, and won't be afraid to ask you questions when instructions are unclear. 4. I am FLEXIBLE. I am not afraid to learn and try new things. I am capable of researching and working on a variety of projects, and frameworks. I can get the job done--and get the job done well.

I am a Senior Full-Stack Developer with 7+ years of experience building scalable web applications, high-performance mobile apps, and AI-powered systems used in production. I specialize in end-to-end product development with a strong focus on mobile-first architecture and AI-driven features. My expertise spans full-stack web development, cross-platform mobile app development, AI integration, and UI/UX implementation. I help startups and businesses build MVPs, SaaS platforms, dashboards, and customer-facing applications that are reliable, secure, and easy to scale. Web and Mobile Development Full-stack web development (React, Next.js, JavaScript, TypeScript) Mobile app development (Flutter, React Native, iOS, Android) Responsive design, mobile-first UI, cross-browser compatibility API-driven architecture, REST APIs, third-party integrations SaaS applications, MVP development, dashboards, admin panels AI Development and Integration AI chatbots, AI assistants, LLM integrations OpenAI, GPT-based systems, embeddings, prompt engineering AI automation, intelligent workflows, AI-powered search Recommendations, data-driven features, AI-enhanced UX Backend and Cloud Backend development, server-side logic, API design Authentication, authorization, database integration Cloud deployment, scalable services, performance optimization Secure, maintainable, production-ready code UI/UX and Frontend Modern UI development, component-based architecture Figma to code, design systems, reusable components Performance optimization, accessibility, clean UX How I Work Senior-level ownership, architecture, and technical leadership Clean code, scalable systems, and long-term maintainability Clear communication, transparent estimates, reliable delivery Agile development, iterative delivery, product-focused mindset If you’re looking for a senior full-stack developer with deep expertise in web development, mobile app development, and AI integration, I can help you design, build, and scale your product from idea to production.