Hire the Best JSON Developers in Zagreb, HR

More than 3,000 reviews on G2

4.5/5

of Upwork by G2 peer reviewers

Hire freelancers

Viktor V.

Zagreb, Croatia

$20/hr

5.0

17 jobs

I help individuals and businesses automate tasks and build reliable backend systems. Delivered 20+ projects over 3 years. Zero unhappy clients, zero broken systems. ✅ WHAT I DELIVER - Workflow automation, task automation - Backend APIs, REST API development - Web apps, dashboards, internal tools - Telegram bots, Discord bots, WhatsApp bots - Automated emails, SMS automation - Data pipelines, real-time data processing - Web scraping, web crawling - PDF parsing, PDF generation, OCR - AI chatbots, LLM integrations, AI agents - Google Workspace automation - Third-party API integrations 🛠️ TECH STACK - Languages: Python, JavaScript, SQL - Backend: Django, FastAPI, Flask - Frontend: React, Bootstrap, Streamlit - Databases: PostgreSQL, MySQL, MongoDB - Background tasks: Celery, Redis, RabbitMQ - ORM & migrations: SQLAlchemy, Alembic - Scraping: BeautifulSoup, Scrapy, Playwright - Data analysis: Pandas, NumPy, Matplotlib - AI & LLMs: OpenAI API, Claude API, RAG - Automation platforms: n8n, Zapier, Make - API Integrations: Stripe, Airtable, Twilio - Cloud Services: AWS, Supabase, DigitalOcean - Deployment: Docker, Linux, Git Hi there, let's have a chat. I respond within 15 minutes :)

Automation
Django
FastAPI
PostgreSQL
Amazon Web Services
Back-End Development
Python
SQL
Data Scraping
Data Extraction
Data Mining
Web Scraping
API
API Integration
RESTful API
Database
Database Design
Chatbot Development
Bot Development
Artificial Intelligence

How it works

Post a job for freePost a job

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

“Upwork provides an umbrella-level of security. I can see a talent’s work history and ratings. I can hold payments in escrow. I can communicate through Upwork Messages instead of working through my email address.”
Kim Darling
Emerald Tiger
“Upwork 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.”
David Merry
Kinetic Investments
“Our very specific requirements can be a challenge—With Upwork, we’re able to access a bigger community to ensure the success of our projects.”
Katja Krohn
Summa Linguae

How do I hire a JSON Developer near Zagreb, on Upwork?

You can hire a JSON Developer near Zagreb, on Upwork in four simple steps:

Create a job post tailored to your JSON Developer project scope. We’ll walk you through the process step by step.
Browse top JSON Developer talent on Upwork and invite them to your project.
Once the proposals start flowing in, create a shortlist of top JSON Developer profiles and interview.
Hire the right JSON Developer for your project from Upwork, the world’s largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a JSON Developer?

Rates charged by JSON 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 JSON Developer near Zagreb, on Upwork?

As the world’s work marketplace, we connect highly-skilled freelance JSON Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream JSON Developer team you need to succeed.

Can I hire a JSON Developer near Zagreb, within 24 hours on Upwork?

Depending on availability and the quality of your job post, it’s entirely possible to sign up for Upwork and receive JSON Developer proposals within 24 hours of posting a job description.