Nikolay Pavlov
Verified Expert in Engineering
Full-stack AI Engineer and Developer
Sofia, Bulgaria
Toptal member since April 15, 2026
Nikolay is a CTO and full-stack AI engineer with 10+ years of experience building AI systems from scratch. His first AI platform, Ispolink, is an AI match-making app that automatically connects companies and job seekers. His second AI platform, Giant AI, is an AI agent powered by DeepSeek R1, demonstrating market analysis expertise that interacts autonomously on social networks like X and Blockchain. Nikolay is an expert at integrating AI into existing systems with RAG pipelines and live data.
Portfolio
Experience
- Python - 10 years
- .NET - 10 years
- Full-stack - 10 years
- React - 10 years
- Node.js - 10 years
- Next.js - 8 years
- Docker - 5 years
- Large Language Models (LLMs) - 3 years
Preferred Environment
Linux, GitHub, GitLab, Data Engineering, AI Agent Orchestration, Machine Learning, Tailwind CSS, Supabase Auth, Lovable, Resend, AWS DevOps, Azure DevOps, Platform Engineering, Reliability Engineering, Incident Response, RAG Architecture, RAG Systems, Data Processing, Scalability, Vector Databases, Neo4j, Ruby, Fully Homomorphic Encryption (FHE), Zero Trust, Stripe, Vercel, Platforms, Concurrency, Role-based Access Control (RBAC), Optical Character Recognition (OCR), State Machines, Enterprise Resource Planning (ERP), Multi-tenant SaaS, Shopify Plus, Operations Management Systems (OMS), Shopify API, Third-party Logistics, Warehouse Management System (WMS), NPM, Server-side Rendering (SSR), Multi-tenant Architecture, Monorepos, Turborepo, OpenID Connect (OIDC), NestJS, ASP.NET Core, SAP, Database Design, Financial APIs, SOC 2, Mortgages, Geolocation, Maps, Web Security, Web Applications, GIS, SaaS, Scalable Architecture, Acumatica, Conversational AI, Cloud Native, Front-end Architecture, Software Design, Stripe API, Financial Services, Apple Pay, Amazon CloudWatch, GitLab CI/CD, Mapbox API, AI Tools, Apify SDK, FaunaDB, Web Scraping, claw code, React Native, Payment Gateways, Application State Management, Responsive UI, Zustand, n8n, Liquid, Liquid Template, Shopify Liquid, DuckDB, Dagster
The most amazing...
...products I've built are two scalable enterprise-grade AI projects: Ispolink and the Giant AI agent platform.
Work Experience
Chief Technology Officer | Senior Software Developer
Ispolink
- Architected and guided the development of an AI-powered recruitment platform enabling large-scale job-candidate matching.
- Created modular back-end components using Python, Node.js, and .NET to support scalability and resilience.
- Planned real-time APIs handling asynchronous processing and high-throughput workloads.
- Enhanced front-end applications using React, improving usability and engagement.
- Directed AWS cloud infrastructure alongside Kubernetes orchestration for containerized services.
- Refined database performance through indexing, caching, and query optimization across MongoDB and PostgreSQL.
- Incorporated blockchain functionality using Solidity to ensure secure and transparent operations.
- Executed CI/CD pipelines with automated testing to ensure consistent delivery.
- Managed collaboration across engineering, AI, and DevOps teams, aligning technical direction.
Software Developer
SAP
- Engineered backend services for enterprise monitoring systems processing large-scale infrastructure data.
- Formulated APIs for real-time ingestion and analytics of logs, metrics, and alerts.
- Applied observability techniques, including logging, tracing, and monitoring across allocated services.
- Upgraded CI/CD workflows to improve delivery consistency and reliability.
- Maintained containerized environments using Docker and Kubernetes.
- Collaborated with global teams on architecture and system connectivity.
- Diagnosed production issues through debugging and root-cause investigation.
Software Developer
Industria
- Constructed back-end systems using Django, Node.js, and Laravel for enterprise content workflows.
- Arranged REST APIs supporting user management and business logic operations.
- •Produced administrative dashboards and internal tools for operational visibility.
- Enforced secure authentication with role-based access control mechanisms.
- Optimized database efficiency through indexing and query tuning.
- Streamlined deployment processes using CI/CD automation.
Software Developer
Devision
- Built workflow automation tools using PHP, JavaScript, and SQL to streamline operations.
- Generated reporting dashboards and CRUD-based applications for internal use.
- Structured back-end services and merged relational database components.
- Refined UI responsiveness and usability through front-end enhancements.
- Performed testing, debugging, and performance tuning to ensure stability.
Back-end Developer
Net React
- Handled the development of a retail web application.
- Developed, monitored, and deployed changes to the retail website.
- Participated in meetings with product owners to discuss the development process.
Experience
Ispolink
https://www.ispolink.com/The state-of-the-art features include an end-to-end solution with streamlined hiring flows, GitHub, Google, Microsoft, and Zoom integration, cryptocurrency reward mechanisms, referral-based systems, engaging leaderboards, and gaming integrations.
Giant AI
https://giantai.ispolink.com/Ispoverse
https://www.ispolink.com/the-ispoverseSkills
Libraries/APIs
React, Node.js, REST APIs, API Development, Vue, Vue 3, Vue 2, Entity Framework, OpenAI API, Back-end APIs, Stripe, Shopify API, Stripe API, Mapbox API, Liquid, Claude API, SOAP APIs, Inertia, FFmpeg, Chai
Tools
GitHub, Terraform, GitLab, Jira, Claude Code, Tableau, Git, Azure Kubernetes Service (AKS), Auth0, Azure OpenAI Service, BigQuery, Shopify Plus, NPM, Amazon CloudWatch, GitLab CI/CD, n8n, Claude, Vitest, Apache Airflow, Codex, GIS, Acumatica, Pytest, uWSGI, NGINX, Webpack
Languages
Python, JavaScript, TypeScript, Solidity, PHP, HTML, CSS, Python 3, GraphQL, SQL, C#, HTML5, Rust, Liquid Template, Shopify Liquid, Go, Bash, Java, Ruby
Frameworks
.NET, Angular, Express.js, Jest, Next.js, Laravel, Material UI, Blazor, .NET Core, ASP.NET, Tailwind CSS, .NET 8, OAuth 2, Redux, NestJS, ASP.NET Core, Django, AdonisJS, LangGraph, React Native, Codeception
Paradigms
Microservices, Automation, Agile, DevOps, Automated Testing, Unit Testing, App Development, Functional Programming, Azure DevOps, Back-end Architecture, Marketplace Platforms, Role-based Access Control (RBAC), Database Design, Model Context Protocol (MCP), UI Design, Testing, E2E Testing
Platforms
Linux, Blockchain, Amazon Web Services (AWS), Google Cloud Platform (GCP), AWS Lambda, Shopify, Azure, Kubernetes, Azure Functions, Vercel, Docker, Netlify, Amazon EC2, JVM, Apache Kafka, WordPress, Cloud Native, OpenShift
Storage
PostgreSQL, MySQL, SQLite, JSON, Google Cloud, Data Pipelines, Database Management, Databases, MongoDB, Microsoft SQL Server, Azure SQL, Neo4j, Redis, Amazon S3 (AWS S3)
Other
Large Language Models (LLMs), Web3, CI/CD Pipelines, APIs, Full-stack, API Integration, Artificial Intelligence (AI), Back-end, Payment APIs, Payments, eCommerce, Front-end, Dashboards, Data Visualization, Agentic AI, Supabase, AI Automation, Web Development, Generative Artificial Intelligence (GenAI), FastAPI, Front-end Development, Full-stack Development, Software Architecture, Web Application Design, API Design, Communication, RESTful Web Services, Admin Panels, Dashboard Development, Payment Processing, GitFlow, Architecture, AI Agents, Workflows, Minimum Viable Product (MVP), Anthropic, User Experience (UX), Authentication, Cloud Storage, IT Support, Integration, Integrations, Product Management, Microsoft Azure, OAuth, Distributed Systems, Distributed Software, Azure AI Document Intelligence, OpenAI, Supabase Auth, Resend, Fintech, AI-assisted Development, Software Engineering, API Management, Cloud Architecture, Cloud Engineering, Cloud Platforms, Product Ownership, Site Reliability Engineering (SRE), AWS DevOps, DevOps Automation, Infrastructure Automation, DevOps Engineer, Regulated Industries, Platform Engineering, Reliability Engineering, Incident Response, Debugging, Workflow Automation & System Integration, Infrastructure, Cryptography, Fully Homomorphic Encryption (FHE), Zero Trust, Figma to React, Marketplaces, Back-end Development, Webhooks, Workflow, Firebase Cloud Functions, Technical Architecture, Platforms, Optical Character Recognition (OCR), Operations Management Systems (OMS), Third-party Logistics, Warehouse Management System (WMS), Server-side Rendering (SSR), Multi-tenant Architecture, Monorepos, Turborepo, OpenID Connect (OIDC), SAP, Financial APIs, SOC 2, Mortgages, Geolocation, Maps, Web Security, Web Applications, SaaS, Scalable Architecture, Front-end Architecture, Software Design, Financial Services, Apple Pay, FaunaDB, Web Scraping, claw code, Payment Gateways, Application State Management, Responsive UI, Zustand, DuckDB, Dagster, CTO, AI Integration, Cloud Infrastructure, User Interface (UI), Chatbots, AI Model Training, Gemini, LangChain, Cloud, Airtable, Workflow Automation, System Architecture, Cursor AI, Retrieval-augmented Generation (RAG), Data Structures, Audio, Game Development, Vite, ChatGPT API, Devin, Agentic Coding, Analytics, Metabase, Performance Optimization, Prompt Engineering, RAG Pipelines, Agentic RAG Systems, Data Engineering, AI Agent Orchestration, Machine Learning, LLM Integration, Lovable, AI-based Content SEO, Technical SEO, AI-enabled Search, Answer Engine Optimization (AEO), Agentic AI Systems, AI-generated Code, LLM Agents, RAG Architecture, RAG Systems, Data Processing, Scalability, Vector Databases, Pinecone, Concurrency, State Machines, Enterprise Resource Planning (ERP), Multi-tenant SaaS, Conversational AI, AI Tools, Apify SDK
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