I’m a Web & API Integration Developer specializing in building scalable backend systems, connecting third-party services, and integrating AI into real-world applications.
I’m a Web & API Integration Developer specializing in building scalable backend systems, connecting third-party services, and integrating AI into real-world applications.
I help businesses turn complex workflows into clean, automated, API-driven platforms. Whether it’s building a custom REST API, integrating Stripe payments, synchronizing CRM systems, connecting Google services, or implementing webhook-based automation — I design systems that are secure, reliable, and built for scale.
Beyond traditional web development, I also integrate AI solutions into production systems. I work with OpenAI APIs and LLM-based workflows to build AI-powered features such as intelligent chatbots, automated content generation, data processing tools, and AI-enhanced SaaS platforms. My focus is always on structured outputs, deterministic logic, and backend validation — not just “AI demos,” but real usable systems.
🔧 Core Expertise:
Custom REST API development
Third-party API integrations (Stripe, Google APIs, CRM, messaging services)
OAuth2, JWT authentication, secure API architecture
Webhooks, background jobs, and real-time data synchronization
AI API integration (OpenAI, LLM workflows)
Backend development (Node.js, Python – FastAPI/Django)
Database design (PostgreSQL, MySQL)
Cloud deployment (AWS, Docker)
Automation & SaaS architecture
I work remotely with international clients and manage projects end-to-end — from system architecture and development to deployment and long-term optimization. I prioritize clean code, performance, scalability, and clear communication throughout every phase.
If you need someone who can:
• Connect multiple systems into one reliable platform
• Automate business workflows
• Build AI-powered backend features
• Or develop secure, production-ready APIs
— I’d be happy to help.
This project is an AI-powered web platform called TechWave, designed to allow users to generate images and interact with an intelligent chatbot through a clean, modern interface. I built the core UI, integrated key AI features, and structured the platform so it feels smooth, intuitive, and ready for real-world users.
The platform includes user tools, navigation menus, token-based limits, AI model actions, and a polished dark-themed design.
This project is a finance and client analytics dashboard designed to help businesses track key metrics such as total clients, loan amounts, interest rates, and monthly performance. I developed the entire UI, focusing on clarity, clean structure, and an intuitive user experience.
The dashboard includes dynamic charts, data tables, real-time insights, and a sidebar navigation system — all styled with a modern, professional design.
Designed and implemented secure, scalable API integrations for SaaS and enterprise platforms. Built RESTful and webhook-based integrations using Node.js, FastAPI, and PostgreSQL, connecting systems such as Stripe, OpenAI, Google APIs, Twilio, and CRM platforms. Developed authentication flows (OAuth2, JWT) and handled rate limiting, retries, and error handling for production reliability. Reduced manual operations by 50% through automation between third-party services. Delivered fully documented APIs with Swagger/OpenAPI for easy client adoption.
Engineered dynamic web applications using PHP (Laravel), MySQL, and Vue.js for European clients. Designed modular backend architecture and implemented RESTful APIs. Migrated legacy systems to modern frameworks, increasing maintainability and scalability. Collaborated with UI/UX designers to deliver responsive and SEO-optimized web platforms. Provided post-launch support and performance optimization.
Studied core computer science principles including data structures, algorithms, database systems, software engineering, and system architecture. Gained strong foundations in object-oriented programming, backend development, and distributed systems. Completed academic projects involving web application development, API design, and database optimization. Developed analytical thinking and problem-solving skills that I now apply to real-world SaaS and automation systems.
Experienced in designing and implementing scalable web applications, REST APIs, and third-party integrations across payment systems, CRMs, messaging platforms, and cloud services. Strong background in backend architecture, authentication protocols (OAuth2, JWT), webhook automation, and secure API design. Skilled in integrating AI APIs (OpenAI/LLM-based systems) into production environments, building structured output pipelines, and implementing backend validation for AI-powered features. Experienced in SaaS architecture, database optimization, and cloud deployment using Docker and AWS. Committed to clean code, scalable architecture, and reliable automation systems.
Post a job and invite Milos, or contact them directly. No hidden commission.
