Hire the best API Developers in Budapest, HU

Check out API Developers in Budapest, HU with the skills you need for your next job.
  • $60 hourly
    More than 10 years of experience in programming and software design I'm looking for challenging web development task that require strong professional attitude and wide knowledge of different technologies. I'm offering my services as an all round web developer, consultant, tech lead, specialized to MEAN stack and *AMP stack. Hire me for full project development from scratch, for emergency fixes, technical maintenance, consultation or project planning. I also love pioneering! Skills and experience: Full stack development:: on MEAN stack: - NodeJS, ExpressJS, MongoDB, Angular 2 (6), TypeScript on xAMP stack: - PHP, MySQL, Ajax, JavaScript, jQuery, HTML5, CSS3 - Front end development - API development - Payment gateway integration (authorize.net, PayPal, Google, rentpayment etc.) - WordPress plugins, performance improvements, architecture review - SOAP, WSDL integration (web services, SaaS) - Social media integration - Citrix, GoToWebinar, GoToMeeting, AWeber, Clickatell, Cybertill API integration - Ultracart, GetDrip, GA, GTM, Infusionsoft, ActiveCampaign, MailChimp integration New! I offer consulting services for non professionals, business owners, students, or to anybody who needs a professional advice regarding web development or operations. PM me to book an appointment!
    vsuc_fltilesrefresh_TrophyIcon API Development
    Project Analysis
    Web Application
    CodeIgniter
    Angular
    WordPress Plugin
    Custom PHP
    WordPress
    API
    MySQL Programming
    Node.js
    TypeScript
    jQuery
    PHP
    JavaScript
  • $40 hourly
    Are you struggling to utilize AI solutions like ChatGPT, DALL-E, or Large Language Models for your business? You know that AI adaptation is key, but not sure how to get the most out of it? I help my clients to take advantage of the best Data Science tools in their projects to grow. I help early-stage startups adopt AI solutions without spending hundreds of thousands of dollars on complex systems. Here are some of the results my clients are getting: 🏅 “I strongly recommend Bence to anyone looking for "applied" expertise in OpenAI.” Designed 8 potential Machine Learning systems for their business. 🏅” Amazing job - we’ve never monetized our marketing data until now” – Analyzed survey data to get insights from their users' behaviors to make their marketing plan data-driven I’ve helped my clients by building Python scripts and RESTful API back-end systems that improve their workflows by using the latest AI solutions. We may be a great fit if you are thinking of: 🔑 “Want to utilize AI solutions but not sure if it is feasible” 🔑 “I'm NOT a Machine Learning expert, and I don't have time to mess around with the latest industry trends!” 🔑” need someone to take this AI project, and get it done at a high level, following the latest software developer principles like clean code" I have 4 years of professional experience as a full-time Python developer when I have designed, developed, and delivered 17 high-quality, production-ready, end-to-end Python and Machine Learning projects at BlackRock and Morgan Stanley. I'm also confident particularly comfortable working with clients in finance including the stock market, marketing agencies, and SaaS (B2B, B2C). Here is my tech stack: ✅ Python ✅ OpenAI (leverage the latest Large Language Models - LLM models) ✅ Keras (building unique Deep Learning solutions) ✅ Sklearn (utilizing Machine Learning algorithms) ✅ SQL (query database) ✅ Pandas / Numpy (for data analysis) ✅ Django / Flask (building RESTful API back-end) ✅ GitHub Actions (building CI/CD pipelines to deploy production code) ✅ Jupyter Notebook (for data visualization and data exploratory) ✅ Flutter/Dart (for mobile app development) SOUND LIKE A FIT? NEXT STEPS: Click the green ‘Invite to Job’ button in the top right-hand corner, send me a message, and let’s organize a call!
    vsuc_fltilesrefresh_TrophyIcon API Development
    Django
    RESTful API
    Python Script
    Large Language Model
    Data Analysis
    Azure OpenAI Service
    MLOps
    SQL
    Flask
    Classification
    Natural Language Processing
    Deep Learning
    Machine Learning
    Python
  • $45 hourly
    .NET (Standard / Core) - C# - ASP.NET MVC/WebAPI/Core - SQL - Entity Framework - Azure - Javascript, React I have 10 years professional experience in software development. I worked on projects in several domain so I am able to solve almost all your software related problems. I am a Full-stack Software engineer. I'm capable of working on both the client or server side. I can understand your requirements fast and work out the best solution for your business needs. I'm endeavoring to maintain a good long-term relationship with my clients. Both by honest communication of my progress and also by giving constructive inputs helping you in the final decision. I'm a senior software engineer. I have experience in leading software projects by taking higher responsibility in the initial planning of the architecture/feature set. I'm also good at in ramping up or mentoring new team members or juniors. I've been always a supporter of Software Craftsmanship. It's important for me to write a maintainable and robust codebase which is optimised for easy modification helping the addition of new features fast and safe. To achieve this I always write Unit-tests (and other higher level ones), use the SOLID principles and always keep my knowledge up-to-date about the latest technologies, methods. Backend skills: - .NET (C#) - ASP.NET Core, MVC, WebAPI, - Databases: SQL, Entity Framework, - LINQ, - Azure, - Google and other APIs. Frontend skills: - Javascript, React, - Typescript, - jQuery, - CSS3, - Bootstrap. Other tech skills: - Docker, Kubernetes - GIT, SVN, - Linux (admin and scripting). I have additional experience and interest in making softwares for industrial and scientific purposes. This includes data acquisition/visualisation, analysis, control systems. The most important projects I participated in: Service oriented e-commerce platform for multinational company, Online maintenance tool for industrial purposes, Fleet management software, Measurement data analysis and reporting tool.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Google APIs
    Microsoft Azure
    JavaScript
    .NET Framework
    Entity Framework
    ASP.NET Core
    ASP.NET MVC
    SQL
    C#
  • $15 hourly
    [EN]: I am a Software Engineer with more than 8 years of work experience. I currently work mainly with C#, ASP Core, Java, Spring Boot, as well as with Python. I have worked in many companies and startups with many roles and team leadership expertise, I have a strong academic background and I love finding new problems to solve or better solutions to a known problem. In my free time, I enjoy blogging, reading about new technologies and achievements in AI and Self-Driving Cars as well as NLP. [German]: Ich bin ein Software-Ingenieur mit mehr als 5 Jahren Berufserfahrung. Derzeit arbeite ich hauptsächlich mit C#, ASP Core, Java, Spring Boot sowie mit Python. Ich habe in vielen Unternehmen und Startups mit vielen Rollen und Teamführungserfahrung gearbeitet, Ich habe einen starken akademischen Hintergrund und liebe es, neue Probleme oder bessere Lösungen für ein bekanntes Problem zu finden. In meiner Freizeit blogge ich gerne, lese über neue Technologien und Errungenschaften in den Bereichen KI und selbstfahrende Autos sowie NLP.
    vsuc_fltilesrefresh_TrophyIcon API Development
    API
    Spring MVC
    C#
    Artificial Intelligence
    Agile Project Management
    Web Application
    Spring Social
    Spring Boot
    RESTful API
    .NET Framework
    MySQL
    Python
    Java
  • $15 hourly
    Enthusiastic UI/UX Designer, Fullstack web developer, Business Intelligence Specialist and Data Analyst/Scientist thirsty for working with you and help you grow your business. I can help during the whole process from designing, building and launching the final product/service that you desire.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Adobe Lightroom
    Data Analysis
    System Analysis
    Asynchronous I/O
    Database Security
    Machine Learning
    RESTful API
    Vue.js
    JavaScript
    Web Application
    Laravel
    AJAX
  • $20 hourly
    I am engaged in software development since 1995 for different operating systems and devices. For the last 3 years I've been programming for iOS, interested in writing programs for all types of Apple's ecosystem devices. Actively interested in backend development in Go. I have experience with MVC/MVP/MVVM/VIP architectures, as well as knowledge of some clean code patterns and SOLID principles. Have several apps published on the App Store with more than 25K downloads and 4,6 average rating worldwide.
    vsuc_fltilesrefresh_TrophyIcon API Development
    SwiftUI
    Docker
    Rockwell Automation Arena
    Golang
    SCADA
    PLC Programming
    Adobe Creative Suite
    RESTful API
    App Store
    Delphi
    Apple Xcode
    iOS Development
    Swift
    Objective-C
  • $15 hourly
    Web Development, Software Development, Mobile App Development, .NET Core, MERN | MEAN, I’m a Full-Stack Developer with over 8 years of experience crafting digital solutions across various platforms. I take pride in having successfully completed projects for clients from the United States, Canada, Europe, the Middle East, and Australia. What sets me apart is my ability to analyze clients’ requirements meticulously and propose solutions that align with their budget and timeline constraints. My commitment extends beyond just project delivery; I offer comprehensive post-development support and maintenance to become your reliable, long-term IT partner. 🌐 Web Development: Expert in HTML, CSS, JavaScript, and frameworks like React JS and Angular, I deliver responsive and interactive websites. 💻 Software Development: With proficiency in .NET Core and the MERN stack, I offer robust software solutions catering to diverse business needs. 📱 Mobile App Development: From React Native to Swift, I develop seamless and high-performing mobile applications for both Android and iOS platforms. 🛠 .NET Core: Specializing in creating scalable and secure web applications with .NET Core, ensuring high performance and reliability. 🧩 MERN Stack: Leveraging MongoDB, Express.js, React, and Node.js, I build full-stack web applications that are efficient and user-friendly. 📣 Ready to bring your vision to life with top-tier development services? Let’s connect and discuss your project today!
    vsuc_fltilesrefresh_TrophyIcon API Development
    iOS Development
    Hybrid App Development
    Database
    Mobile UI Design
    MongoDB
    Node.js
    Back-End Development
    Front-End Development
    Flutter
    Firebase
    JavaScript
    Mobile App Development
    Android App Development
    React Native
  • $7 hourly
    ABOUT ME I am a first-year master's student in CS who has a strong interest in this field. I have continuously educated myself to pursue a career in computer science and IT. I am a highly motivated and dedicated student with a passion for learning and a strong academic record. Currently, I am looking for an internship program or junior level job opportunities to gain more experience in the field.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Java
    Python
    SQL
    PostgreSQL
    ExpressJS
    Node.js
    HTML
    React
    JavaScript
    C
    Bootstrap
    Docker
    CSS 3
    Web Development
  • $85 hourly
    More than 20 years spent in all phases of the software development life cycle, both in solo and in teams, always eager to learn more. Not the everyday IT guy, looking here only for challenging tasks or roles.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Management Skills
    Project Delivery
    Software Integration
    Data Analysis
    Solution Architecture
    Problem Solving
  • Want to browse more freelancers?
    Sign up

How hiring on Upwork works

1. Post a job (it’s free)

Tell us what you need. Provide as many details as possible, but don’t worry about getting it perfect.

2. Talent comes to you

Get qualified proposals within 24 hours, and meet the candidates you’re excited about. Hire as soon as you’re ready.

3. Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

4. Payment simplified

Receive invoices and make payments through Upwork. Only pay for work you authorize.

Trusted by

How do I hire a API Developer near Budapest, on Upwork?

You can hire a API Developer near Budapest, on Upwork in four simple steps:

  • Create a job post tailored to your API Developer project scope. We’ll walk you through the process step by step.
  • Browse top API Developer talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top API Developer profiles and interview.
  • Hire the right API 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 API Developer?

Rates charged by API 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 API Developer near Budapest, on Upwork?

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

Can I hire a API Developer near Budapest, 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 API Developer proposals within 24 hours of posting a job description.

API Developer Hiring Resources
Learn about cost factors Hire talent