Hire the best API Developers in Croatia

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$40 hourly
Zeljko K.
- 5.0/5
- (31 jobs)
Senior Developer with 20+ years of experience ✅ Blockchain development ✅ Solidity ✅ Rust ✅ Smart contracts ✅ Solana ✅ Ethereum ✅ Web3 ✅ NFT ✅ Crypto ✅ ERC-20 ✅ ERC-721 ✅ React.js ✅ Backend development ✅ API integrations ✅ Web development ✅ PHP ✅ Plugin development ✅ Payment Gateway Integrations ✅ API development ✅ Web applications ✅ Javascript ✅ Mysql ✅ Linux As a Senior Developer with over 20 years of experience and a Master of Information Technology, I bring a wealth of knowledge and passion to every project. My commitment to writing clean, efficient code and doing things the right way ensures top-quality results. I am fully dedicated to each project, striving for 100% customer satisfaction. My self-organization, quick learning, and motivation drive me to seek out and conquer new challenges. Let’s connect and discuss how we can make your next project a success! #bockchain #solidity #crypto #smartcontracts #backend #linux

API Development
Payment Gateway Integration
Web Application
API Integration
API
Laravel
Crypto Wallet
Python
JavaScript
Smart Contract Development
Smart Contract
Solidity
Ethereum
Blockchain Development
Blockchain
$40 hourly
Matej P.
- 4.7/5
- (7 jobs)
I help companies make smarter decisions while saving time and money through specialized finance technology solutions. ⭐️ Over 6 years of experience in leading consulting firms (including 𝗲𝘅 𝗣𝘄𝗖 𝗔𝗱𝘃𝗶𝘀𝗼𝗿 𝗮𝗻𝗱 𝗜𝗻𝘃𝗲𝘀𝘁𝗺𝗲𝗻𝘁 𝗕𝗮𝗻𝗸𝗲𝗿) and 𝗻𝘂𝗺𝗲𝗿𝗼𝘂𝘀 𝗳𝗿𝗲𝗲𝗹𝗮𝗻𝗰𝗲 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 in the finance-tech sector. ⭐️ Strong digital skills, including 𝗣𝘆𝘁𝗵𝗼𝗻, 𝗛𝗧𝗠𝗟, 𝗖𝗦𝗦, 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁, 𝗦𝗤𝗟, Google Studio, and other dashboard creation platforms, focused on finance-related solutions. ⭐️ Ensuring data security is my top priority. I maintain 𝘂𝗽-𝘁𝗼-𝗱𝗮𝘁𝗲 𝗹𝗶𝗰𝗲𝗻𝘀𝗲𝘀, 𝘀𝗲𝗰𝘂𝗿𝗲 𝘀𝘆𝘀𝘁𝗲𝗺𝘀, 𝗮𝗻𝗱 𝗶𝗻𝗱𝘂𝘀𝘁𝗿𝘆 𝗯𝗲𝘀𝘁 𝗽𝗿𝗮𝗰𝘁𝗶𝗰𝗲𝘀 to guarantee the safety and confidentiality of client information. ⭐️ 𝗠𝗮𝘀𝘁𝗲𝗿'𝘀 𝗱𝗲𝗴𝗿𝗲𝗲 𝗶𝗻 𝗙𝗶𝗻𝗮𝗻𝗰𝗲, with a focus on financial modeling, analytics, and business strategy, complemented by certifications in Python and data analysis. I’m excited to discuss your projects - 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 𝗺𝗲 𝗮𝗻𝗱 𝗹𝗲𝘁’𝘀 𝗰𝗼𝗻𝗻𝗲𝗰𝘁 𝘁𝗵𝗶𝘀 𝘄𝗲𝗲𝗸. Cheers!

API Development
JavaScript
IT Consultation
Quality Control
Data Annotation
Data Extraction
Automation
Web Development
Web Scraping
ChatGPT
Python
Investment Research
Financial Reporting
Financial Analysis
Financial Audit
$50 hourly
Andrija G.
- 3.5/5
- (7 jobs)
Welcome! I am a developer with over 8 years of professional experience and a passion for coding that extends beyond work. My areas of expertise include: • Building custom web solutions and maintaining existing ones • Refactoring legacy systems • Providing consultation services • Covering complex projects with automated testing suites I understand that as a client, you are looking for a partner who can deliver tangible results. With my expertise and experience, I am confident that I can help you: • Increase your revenue through the development of effective web solutions • Streamline your operations by refactoring legacy systems • Gain valuable insights through consultation services • Ensure the quality of your projects through automated testing suites Whether you need a team player or a lone architect, I am comfortable working in both environments. I hold a Computer Science Masters degree and specialize in following tech stacks: • PHP frameworks like Laravel, Lumen, Laravel Nova, Statamic, and Symfony • PHP/Laravel security audit and secure oriented coding - pentesting audit. Tooling familiarity - Burp Suite, NMAP, Nikto, Amass, Whatweb, SQLmap + secret tooling I built myself • CMS platforms like Magento 1 & 2, WordPress, and MicroService architecture • CI/CD, TDD, DDD, Docker, Mongo, Postgres, MySQL • JavaScript frameworks like VUE.js, Alpine.js, and NODE.js • DAPP development using Blockchain, Web3, Solidity, Truffle, and Drizzle with VUE.js I am available immediately and prioritize clear communication throughout the project lifecycle. As a battle-hardened developer, I pride myself on never abandoning a project or client and always going the extra mile to ensure their success. If you are looking for a reliable and experienced developer to help you achieve your goals, please do not hesitate to contact me. I would be happy to discuss your project and provide you with a customized solution that meets your needs. Thank you for considering me for your project. I look forward to working with you!

API Development
Web Scraping
Software Architecture & Design
Browser Automation
Solidity
Full-Stack Development
DevOps
Node.js
JavaScript
PHP
SaaS
Microservice
Laravel
Vue.js
SQL
$30 hourly
Anton K.
- 5.0/5
- (26 jobs)
I am a Structural Engineer with experience in Software Development and working as a Research Assistant with a mission of developing more economical structures. Bringing the best of modern technology and enhancing the design of structures with the application of Generative Design, AI and Automation through custom-made tools (Standalone Apps, Revit API, Dynamo, RSA API, Abaqus Script..).

API Development
Software Development
Building Information Modeling
C#
ETABS
Autodesk Robot Structural Analysis
Algorithm Development
Abaqus
Finite Element Analysis
Windows Presentation Foundation
Structural Analysis
Steel Structure
Structural Engineering
.NET Framework
Autodesk Revit
$50 hourly
Marinko C.
- 0.0/5
- (0 jobs)
Strongly motivated individual and excellent problem solver. Extensive experience in Frontend Development using React.js, Node.js, Webpack, JavaScript, TypeScript and MongoDB.

API Development
MongoDB
GraphQL
RESTful API
Tailwind CSS
Front-End Development
jQuery
JavaScript
HTML5
Node.js
React
Responsive Design
CSS 3
TypeScript
webpack
$55 hourly
Jozo P.
- 0.0/5
- (0 jobs)
I am a seasoned Senior Java Developer known for my enthusiasm, proactive approach, and strong business acumen. With a track record of successfully delivering complex projects, I specialize in Java development, Spring Boot, Quarkus, and Microservices architecture. My expertise extends to containerization using Docker and proficient database management. My career has been driven by a relentless pursuit of excellence, and I am dedicated to staying at the forefront of technology trends and best practices. I thrive on solving intricate technical challenges and collaborating with cross-functional teams to bring innovative solutions to life. Beyond my technical proficiency, I am equally passionate about entrepreneurship. My journey in managing my own business has taught me invaluable lessons in leadership, strategy, and adaptability. I am always eager to explore new avenues for driving success and fostering growth, whether in my own ventures or by contributing to forward-thinking organizations. Let's connect and explore how my skills and experience can add value to your network or project. I look forward to engaging in meaningful conversations and forging valuable connections.

API Development
Docker
Front-End Development
CI/CD
Chatbot Development
RESTful API
API
Amazon Web Services
Java
$50 hourly
Josip B.
- 0.0/5
- (3 jobs)
I'm a full stack senior developer with experience in data science, modern web technologies and embedded systems.

API Development
Firebase
Web Application
Node.js
React
Python
MongoDB
JavaScript
C#
Flask
$30 hourly
Dino V.
- 0.0/5
- (1 job)
I’m an experienced IT professional with a passion for solving complex challenges and delivering innovative solutions. My expertise spans SAP development, full-stack application design, and IT infrastructure management, allowing me to adapt to diverse industries and project needs. What I Do Best SAP Development & Integration: I specialize in SAP BTP administration, CPI workflows, and UI5 development. From building custom monitoring tools to optimizing logistics interfaces, I streamline operations and improve efficiency. Full-Stack Development: With skills in Python, Django, Java, JavaScript, C#, PHP, Angular, Node.js... I handle end-to-end development—backend, database design, and frontend implementation. Cloud & Automation: I use Azure administration and CI/CD pipelines to optimize deployments and have built no-code solutions using Mendix, AppGyver and Bubble. IT Infrastructure: I’ve managed servers, networks, and specialized systems, ensuring secure and efficient IT environments. I thrive on collaborating with teams, learning new technologies, and creating solutions that make a difference. Whether it’s developing applications, optimizing systems, or managing infrastructure, I’m always focused on delivering value.

API Development
Docker
Django
Node.js
C#
JavaScript
Java
Python
Microsoft Azure Administration
Azure DevOps
Windows Administration
Linux System Administration
Low-Code Development
No-Code Development
Database
$55 hourly
Hrvoje T.
- 0.0/5
- (0 jobs)
.NET Backend Developer with 5 years of experience in C#, .NET, REST APIs, Entity Framework, SQL, and Azure. I specialize in building scalable, high-performance backend solutions and integrating secure APIs.

API Development
Microsoft Azure
SQL
Entity Framework
REST API
C#
Web Development
.NET Stack
$20 hourly
Dario Z.
- 0.0/5
- (0 jobs)
Hello 👋🏻! I’m Dario, a seasoned full-stack engineer, with knowledge in many areas of development. My expertise includes 5+ years experience in: - HTML & CSS - TypeScript & JavaScript - SvelteKit & Angular - CMS & Flutter - Firebase & GCP - Data Analytics & Visualizations Throughout my career, I've played pivotal roles in numerous projects, contributing significantly to their success. Here's a snapshot of my journey: 1. 💳 Fintech - Pay with Four: Engineered an Angular website and Ionic app for Four, streamlining the 'buy now, pay later' process with user-friendly interfaces and seamless integrations. This project’s success led to Four's acquisition by PROG Holdings for $23m within just 18 months of its launch. 2. 🏋️‍♀️ Training Studio - AirLocker: - Developed a Flutter Mobile App delivering simulated high-altitude group workouts, equipped with features for schedule tracking, training management, and performance enhancement. 3. 🔗 Referral App - Tepe: Created the TePe Referral mobile application, enhancing access to TePe oral health care products for dental professionals and their patients. The app facilitated easy product selection, personalized notes, and seamless referral emails, contributing to tangible earnings for dental professionals upon patient redemptions. 4. 🏥 Healthcare - EDS: Led the development of an Angular-based CMS and a Flutter mobile application, optimizing medication distribution in emergencies. This project elevated patient care and operational efficiency through innovative design and execution. The project I'm most proud of: 5. 📊 Data Analytics - Analyzee: As a lead developer, alongside with the team I crafted an advanced analytical platform boasting extensive functionalities like custom dashboards, diverse data source integration, session recordings, advanced filtering, and a fully customizable live chat feature. My focus on cost-effectiveness made this platform both powerful and accessible for free use. Effective communication and task clarity are very important to me for optimal efficiency. While I may be reserved, my passion for coding and problem-solving is on the next level. I’m excited to bring this combination of technical expertise and quiet determination to your next project, ensuring we achieve remarkable results together!

API Development
Data Analytics & Visualization Software
Mathematics
Back-End Development
Cloud Database
Flutter
CMS Development
Ionic Framework
Svelte
Firebase
Software Development
Full-Stack Development
Google Chrome Extension
Angular
Firebase Realtime Database
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