๐ ๐๐๐ / ๐๐๐ / ๐ ๐จ๐ฎ๐ง๐๐๐ซ ๐ฐ๐ข๐ญ๐ก ๐๐+ ๐ฒ๐๐๐ซ๐ฌ ๐ข๐ง ๐ญ๐๐๐ก | ๐ฐ ๐๐ฏ๐๐ซ $๐๐๐ ๐ข๐ง ๐๐ข๐ง๐๐ง๐๐ข๐๐ฅ ๐๐ข๐ฌ๐๐ซ๐๐ฉ๐๐ง๐๐ข๐๐ฌ ๐๐จ๐ฎ๐ง๐ | โก ๐๐ฑ ๐๐๐ฌ๐ญ๐๐ซ ๐๐๐ฅ๐ข๐ฏ๐๐ซ๐ฒ | ๐ ๐๐% ๐๐๐ฐ๐๐ซ ๐ซ๐๐ฅ๐๐๐ฌ๐ ๐ข๐ง๐๐ข๐๐๐ง๐ญ๐ฌ
๐ฌ ๐๐๐ฌ๐ฌ๐๐ ๐ ๐ฆ๐ โ๐๐๐๐๐โ ๐๐ง๐ ๐ ๐๐ญ ๐ ๐ ๐๐๐ ๐๐-๐ฆ๐ข๐ง๐ฎ๐ญ๐ ๐ฉ๐ซ๐จ๐๐ฎ๐๐ญ ๐ฌ๐ญ๐ซ๐๐ญ๐๐ ๐ฒ ๐๐๐ฅ๐ฅ - Iโll help you clarify the problem, identify the fastest realistic solution, and map out how to validate, build, launch, automate, or scale your product.
๐ ๐๐ซ๐ข๐ง๐ ๐๐จ๐ฆ๐ฉ๐ฅ๐๐ฑ ๐ข๐๐๐๐ฌ ๐ญ๐จ ๐ฅ๐ข๐๐ ๐ฐ๐ก๐๐ซ๐ ๐จ๐ญ๐ก๐๐ซ ๐ญ๐๐๐ฆ๐ฌ ๐ก๐ข๐ญ ๐ ๐ฐ๐๐ฅ๐ฅ.
My experience as a CEO, CTO, Founder, Lead Architect, Tech Lead, Team Lead, and Lead Data Analyst allows me to see the whole product - not only the code. In one real case, a single four-hour consultation helped a founder avoid approximately ๐ $๐๐ ๐ฆ๐ข๐ฌ๐ญ๐๐ค๐ before committing resources to the wrong solution.
I work best with ambitious founders and companies building ๐๐ ๐ฉ๐ซ๐จ๐๐ฎ๐๐ญ๐ฌ, ๐๐๐๐ ๐ฉ๐ฅ๐๐ญ๐๐จ๐ซ๐ฆ๐ฌ, ๐๐๐๐ฌ, ๐ ๐ข๐ง๐๐๐๐ก, ๐๐๐๐๐๐ก, and complex data-heavy systems.
๐น ๐๐-๐๐จ๐ฐ๐๐ซ๐๐ ๐๐ฉ๐ฉ๐ฅ๐ข๐๐๐ญ๐ข๐จ๐ง๐ฌ
I develop practical AI features for SaaS products and internal platforms: AI assistants, copilots, chatbots, semantic search, knowledge-base systems, document assistants, RAG and GraphRAG applications, local LLM integrations, LLM workflows, tool calling, and model fine-tuning when it creates real business value.
๐น ๐๐ ๐๐ฎ๐ญ๐จ๐ฆ๐๐ญ๐ข๐จ๐ง & ๐๐ ๐๐ง๐ญ ๐๐จ๐ซ๐ค๐๐ฅ๐จ๐ฐ๐ฌ
I design AI agents, multi-step automations, internal bots, API orchestration systems, document workflows, CRM automations, operations tooling, and human-in-the-loop pipelines using n8n, Zapier, Make, LangGraph, LangChain, CrewAI, MCP, webhooks, queues, and business APIs.
๐น ๐ ๐ฎ๐ฅ๐ฅ๐ฌ๐ญ๐๐๐ค ๐๐๐๐ & ๐๐๐ ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐ฆ๐๐ง๐ญ
From startup idea to production-ready platform: SaaS MVPs, admin panels, dashboards, customer portals, internal tools, marketplaces, subscription products, billing systems, booking platforms, CRM systems, APIs, scalable backends, and data-intensive applications.
๐ ๐๐๐ฅ๐๐๐ญ๐๐ ๐ซ๐๐ฌ๐ฎ๐ฅ๐ญ๐ฌ:
โ ๐๐ซ๐๐๐ญ๐ข๐๐ฎ๐ฆ - redesigned the educational content development process, achieving ๐๐ฑ ๐๐๐ฌ๐ญ๐๐ซ ๐๐๐ฅ๐ข๐ฏ๐๐ซ๐ฒ, a ๐๐% ๐๐จ๐ฌ๐ญ ๐ซ๐๐๐ฎ๐๐ญ๐ข๐จ๐ง, and a ๐๐% ๐ข๐ฆ๐ฉ๐ซ๐จ๐ฏ๐๐ฆ๐๐ง๐ญ in the student learning experience.
โ ๐๐ฅ๐๐ฒ๐ซ๐ข๐ฑ - refactored the game release delivery process, reducing incidents by ๐๐% within the first two months and replacing three-month release cycles with ๐ฐ๐๐๐ค๐ฅ๐ฒ ๐ซ๐๐ฅ๐๐๐ฌ๐๐ฌ.
โ ๐๐๐ ๐ ๐ข๐ง๐๐๐๐ก ๐๐ซ๐จ๐ฃ๐๐๐ญ - analyzed historical contract and transaction data from ๐๐๐+ ๐ฆ๐๐ซ๐๐ก๐๐ง๐ญ๐ฌ in two weeks, completed a six-month implementation plan in ๐ฃ๐ฎ๐ฌ๐ญ ๐จ๐ง๐ ๐ฆ๐จ๐ง๐ญ๐ก, and identified more than $๐๐๐ ๐ข๐ง ๐ซ๐๐ญ๐ ๐๐ข๐ฌ๐๐ซ๐๐ฉ๐๐ง๐๐ข๐๐ฌ.
๐ ๐๐จ๐ซ๐ ๐ญ๐๐๐ก๐ง๐จ๐ฅ๐จ๐ ๐ข๐๐ฌ:
Python, TypeScript, JavaScript, Rust, Go, React, Next.js, Vue, Nuxt, Svelte, Node.js, NestJS, FastAPI, Django, Flask, PostgreSQL, MySQL, MongoDB, Redis, Kafka, RabbitMQ, REST, GraphQL, WebSockets, Docker, Kubernetes, Terraform, AWS, GCP, Vercel, Cloudflare, Stripe, OpenAI, Claude, Gemini, Llama, Mistral, Qwen, Ollama, LangChain, LangGraph, LlamaIndex, Pinecone, Weaviate, Qdrant, ChromaDB, and pgvector.
๐๐ ๐ ๐ญ๐๐ฅ๐ฅ ๐ฒ๐จ๐ฎ ๐ญ๐ก๐๐ญ ๐ฒ๐จ๐ฎ๐ซ ๐ฉ๐ซ๐จ๐๐ฎ๐๐ญ ๐๐๐ง ๐๐ ๐๐ฎ๐ข๐ฅ๐ญ, ๐๐จ๐ง๐ฌ๐ข๐๐๐ซ ๐ข๐ญ ๐๐จ๐ง๐.
Send me โ๐๐๐๐๐โ and tell me what you are trying to build, fix, automate, or scale.
AI Agent Development
AI Development
AI Implementation
OpenAI API
Automation
n8n
Make.com
API Integration
Python
Software Architecture & Design
Natural Language Processing
Machine Learning
Full-Stack Development
SaaS Development
TypeScript
Node.js
React
RESTful API
PostgreSQL
JavaScript
Andrei P.
Belgrade, Serbia
$56/hr
5.0
21 jobs
I design and implement reliable, high-performance platforms โ from SaaS solutions to complex backend and AI-driven architectures.
๐ข Backend Engineering โ High-performance systems built with Java and Spring Boot. Production-grade experience designing modular monoliths and microservices, with robust data layers and event-driven architectures.
๐ข SaaS Development โ Multi-tenant systems with subscription management, admin dashboards, and built-in BI analytics.
๐ข Frontend Development โ Responsive, modern UIs built with React and TypeScript.
๐ข Desktop Applications โ Cross-platform desktop apps built with JavaFX, often integrated with complex backends and real-time data flows.
๐ข AI/ML Integration โ Backend support for AI/ML/LLM-powered features.
๐ข Scraping Solutions โ Reliable and scalable web scraping pipelines for structured and unstructured data extraction.
๐ข Cloud Infrastructure โ Scalable solutions on AWS or GCP, complete with CI/CD pipelines, robust architecture and full monitoring.
๐งฉ I'm hands-on throughout the entire process โ from understanding requirements and choosing the right tech, to designing the architecture, building the core, testing, and launching the solution.
๐ฌ I stay in regular, open communication with the client to make sure we're always on the same page. That way, I deliver work I'm proud of โ and they're happy with.
Java
Python
TypeScript
Web Development
Web Scraping
Data Scraping
RESTful API
PostgreSQL
NoSQL Database
Desktop Application
Software Architecture & Design
Dragan B.
Belgrade, Serbia
$50/hr
5.0
16 jobs
I am a software developer with over 15 years of professional experience. I bring deep expertise in building and delivering complex systems, ranging from back-office applications to real-time processing of high-volume data.
I have built and maintained complex distributed systems across various domains, like fintech, iGaming, data privacy, IoT and large online marketplaces.
I use AI coding tools (mostly Codex and Claude Code so far) all the time and find them very effective for accelerating development. Furthermore, I worked on integrating LLMs into a custom open-source coding assistant, which gave me practical familiarity not only with using AI-powered development tools, but also with how these tools work internally (context selection, code changes, tools integration, MCP, etc).
I look forward to the possibility of discussing how my background fits your current needs.
Tell us what you need. Create your own job post or generate one with AI then filter talent matches.
Hire top talent fast
Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.
Collaborate easily
Use Upwork to chat or video call, share files, and track project progress right from the app.
Payment simplified
Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.
Don't just take our word for it
โUpwork provides an umbrella-level of security. I can see a talentโs work history and ratings. I can hold payments in escrow. I can communicate through Upwork Messages instead of working through my email address.โ
KD
Kim Darling
Emerald Tiger
โUpwork is the best platform to hire skilled professionals when we're not looking for a full-time employee. All the companies in our portfolio use Upwork to find talent across a wide range of fields.โ
DM
David Merry
Kinetic Investments
โOur very specific requirements can be a challengeโWith Upwork, weโre able to access a bigger community to ensure the success of our projects.โ
KK
Katja Krohn
Summa Linguae
How do I hire a Neo4j Developer near Belgrade, on Upwork?
You can hire a Neo4j Developer near Belgrade, on Upwork in four simple steps:
Create a job post tailored to your Neo4j Developer project scope. Weโll walk you through the process step by step.
Browse top Neo4j Developer talent on Upwork and invite them to your project.
Once the proposals start flowing in, create a shortlist of top Neo4j Developer profiles and interview.
Hire the right Neo4j Developer for your project from Upwork, the worldโs largest work marketplace.
At Upwork, we believe talent staffing should be easy.
How much does it cost to hire a Neo4j Developer?
Rates charged by Neo4j Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.
Why hire a Neo4j Developer near Belgrade, on Upwork?
As the worldโs work marketplace, we connect highly-skilled freelance Neo4j Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Neo4j Developer team you need to succeed.
Can I hire a Neo4j Developer near Belgrade, within 24 hours on Upwork?
Depending on availability and the quality of your job post, itโs entirely possible to sign up for Upwork and receive Neo4j Developer proposals within 24 hours of posting a job description.