Hire the best API developers

Check out API developers with the skills you need for your next job.
Clients rate API developers
Rating is 4.7 out of 5.
4.7/5
based on 3,301 client reviews
  • $25 hourly
    I am Stanislav Pyshevskyi. I have more than six years of experience in backend development, CRM and ERP integrations, and managings Linux servers. For the last few years, I have got more involved in communicating with clients, supporting them, and helping them resolve their requests. I would be happy to work with you, hone my skills, be involved in your team, raise the quality and efficiency of your products and services, and get more achievements with you. I am interested in getting more involved in DevOps, Linux management, and complex integration systems. I discover new technologies and develop my soft skills. Passing courses, learning languages.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Data Processing
    Automation
    Data Integration
    Pipedrive
    Data Entry
    API
    HubSpot
    Database
    CRM Software
    Salesforce
    PHP
    Laravel
    Node.js
    JavaScript
  • $50 hourly
    My name is Saul Hidalgo, a Computer Engineer with a passion for developing Java and .Net software. I have been fortunate to work with exceptional teams and have had the opportunity to contribute to various sectors, including National Security/Defense in the United Kingdom, Oil companies, and Universities such as Harvard Business Publishing. The software I have created is currently being successfully utilized by these organizations. I thrive on new challenges and continuously seek opportunities to expand my skills. You can explore my public contributions on my GitHub account: saulhidalgoaular. Currently, I reside in Turkey and possess fluency in both English and Spanish. Below are my areas of expertise and skills: 1. Code Translation and Conversion: - Proficient in translating code across various languages, with expertise in Python, Java, Delphi, C++, and C#. 2. Document Management System (DMS) - OpenKM: - Extensive experience in developing workflows, automations, cron tasks, and integrations using the Java/PHP API. - Configuration of daily backups. - Skilled in utilizing OpenKM as a DMS. 3. Algorithms and Programming: - Strong command over algorithms and programming skills, particularly in C/C++ and Java. - In-depth knowledge of data structures, strings, sorting, arithmetic and algebra, combinatorics, number theory, backtracking, graph traversal, algorithms for graphs, dynamic programming, and computational geometry. 4. Accounting: - Well-versed in managing material movement between stores and shops. - Proficient in handling retail-related accounting tasks. 5. Point of Sale (POS) Area: - Experience in integrating POS software with label printers, fiscal printers, barcode readers, fingerprint scanners, and keyboards.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Core Java
    Microsoft Excel
    Document Management System
    API
    Algorithm Development
    Data Structures
    Hibernate
    Object-Oriented Programming
    Java
    .NET Framework
    MySQL
    Desktop Application
    C++
  • $25 hourly
    As a web developer, providing a qualitative web-application with a flexible architecture, structured JSON/XML with a flawless API connectivity interface, well-constructed code following the OOPs concept and a seamless development cycle are my standards. Developing applications in PHP using the Laravel framework and my expertise in the developer tools like PhpStorm and skills in MySQL, PostgreSQL etc has brought me this far and has allowed me to get involved in complete application development from scratch. Complex bug fixes, corner case handling and architecture builds are the major areas that I am good at and like to play with. My Services include APIs, optimizations, cache, queuing, monitoring, and you'll get all the expected with professionalism. Frontend development with the help of HTML, CSS, Javascript is also the area I worked at. My key skills include: Php, Laravel Framework (Advanced level) FrontEnd (HTML, CSS, Javascript, Bootstrap)(Advanced level) Databases (MySQL, PostgreSQL, Redis)(Advanced level) Hosting (AWS, Digital Ocean) Amazon services (ELB, RDS, S3, EC2, SNS and etc.) Version Control tools (git, GitHub, bitbucket, etc.) Project management tools (Trello, Skype, asana, slack, Discard, Pivotal Tracker, Jira, team viewer, zoom, etc.) Solution Architecture, Web-application Architecture (code, database, choosing best solution) Server configuration API Tools (Apiary, Postman, etc.)
    vsuc_fltilesrefresh_TrophyIcon API Development
    Version Control
    Web Hosting
    Server
    Front-End Development
    Solution Architecture
    Database
    API
    Laravel
    Amazon Web Services
    PHP
  • $50 hourly
    Have been working as web developer since early 2000s Have made more than 500 websites ( and counting). Freelancing since 2007. Drupal Top 5 developer on Elance.com ( before it was bought by Odesk and became Upwork ) CiviCRM developer since 2017. * Huge experience in troubleshooting and problem-solving. * CiviCRM extensions and custom reports using CiviCRM API (php, json, javascript). CiviCRM integration with anything. * On demand devops skills (AWS (EC2, SES, SNS), Linode, WHM, CPanel, Apache/Nginx, MySQL/MariaDB). * Front-end development: Drupal and WordPress themes creation and customization, including an extended knowledge of popular frameworks and tools, like Bootstrap, ZURB, npm scripts, Gulp/Grunt, CSS/CSS3, SASS/LESS, jQuery. * Back-end programming - Drupal, CiviCRM and WordPress custom modules and extensions. * Overall site-building and management (Drupal , Wordpress) * Security and performance issues at server configuration level (Apache, Nginx, MySQL/MariaDB, Redis) * Some DevOps proficiency, able to manage Linux hosting environments ( AWS, Linode, CPanel/WHM on shared, VPS) * Drupal commerce (using both Ubercart and Commerce modules), Woocommerce # Toolbox: Drupal, PHP, CiviCRM, CSS3, SASS, Less, jQuery, WordPress, CiviCRM, PHP, MySQL, Apache, Nginx, AWS (E2,SES, SNS), Composer, Docker, Leaflet, dataTable, Invision Forum, Mailchimp, Twilio, PayPal, CentOS, Fedora, Ubuntu, Cpanel, WHM, Jira, Trello, BitBucket.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Customer Relationship Management
    CiviCRM
    API
    PHP
    Theme Customization
    Drupal
    Data Migration
    Web Development
    WordPress
    CSS
  • $60 hourly
    Specialized Java and certified SnapLogic developer, practicing java for more than 4 years and Data Integration (SnapLogic) almost 3 years. You can see/verify my certification in certification section bellow. Also for my self I could say that I'm Salesforce enthusiast, every spare free time I used for learning Salesforce platform. Highly motivated and hardworking, willing to learn new skills also eager to absorb as much knowledge and insight as possible ability to maintain high level of confidentiality. I have good work ethic, capable to work with a team, always on time(fulfill deadlines).
    vsuc_fltilesrefresh_TrophyIcon API Development
    Apache Kafka
    XML
    API Integration
    JSON
    Apache Maven
    Spring Integration
    Salesforce
    Gradle
    SnapLogic
    Spring Boot
    API
    CSS
    SQL
    JavaScript
    HTML
    Java
  • $38 hourly
    Implementing your idea into a product that can be accessed in every browser. Intuitive, easy to use, and responsive, optimized for every device. A web application is what I can build for you to increase your business. What can I do for you? - Convert your idea into a Product that can increase your business - Create and deliver web applications from scratch - Fix bugs and optimize your existing project to make it run faster - Add new features on application you already have My top skills: - Angular - JavaScript / ES6 / TypeScript - RxJS, NgRx, NgBootstrap, Angular Material - RESTful API - NodeJS - ExpressJS - PostgreSQL - HTML5 / CSS3 / SCSS / SASS - GitHub, BitBucket, GitLab I'm looking for clients that seeks quality over quick-and-dirty solutions. Feel free to contact me! Best regards!
    vsuc_fltilesrefresh_TrophyIcon API Development
    API
    RESTful API
    Web Development
    SQL
    CSS 3
    HTML5
    Node.js
    JavaScript
    TypeScript
    MongoDB
    Angular
  • $155 hourly
    20 Years Experience with FileMaker Pro, AppleScript, and QuickBooks development. Expert in FileMaker to QuickBooks integrations. Expert in FileMaker to Apple Apps integrations. Expert in Mobile Apps development. Expert In API and SDK integrations Certified FileMaker Pro Developer. If you are sick and tired of redundant and repetitive tasks contact me as soon as possible. I can save you time, I guarantee it!
    vsuc_fltilesrefresh_TrophyIcon API Development
    Web Design
    Google APIs
    Intuit QuickBooks
    FileMaker WebDirect
    HTML
    PHP
    JavaScript
    API
    QuickBooks Online
    Database Programming
    AppleScript
    Database Design
    Claris FileMaker
  • $17 hourly
    I am a very motivated web developer with four years of experience in the development of web projects, I master Angular and I am able to work independently in a dynamic and demanding environment. IT has always been a passion for this I have a strong motivation and analytical skills, method and rigor will help me forge my future in order to become a super developer.
    vsuc_fltilesrefresh_TrophyIcon API Development
    ERP Software
    API
    UX & UI
    Tailwind CSS
    NestJS
    CSS
    AngularJS
    Ecommerce Website
    HTML
    PostgreSQL
    Angular
    Bootstrap
    Responsive Design
  • $75 hourly
    As a highly dedicated FullStack & FileMaker developer with exceptional UX/UI design abilities, I bring years of experience to the table and am ready to leverage it to take your business to new heights. I deliver a hands-on approach to the entire creative process, ensuring that each project is curated with the utmost attention from inception to final delivery. Following industry-leading guidelines, I successfully identify business drawbacks and provide prime solutions for all of them, utilizing a wide range of cutting-edge technologies. This includes my expertise in the entire Claris Pro Suite, encompassing Connect, Pro, and Studio, as well as FileMaker, HTML, CSS, Javascript, TypeScript, PHP, Swift, Angular, React, APIs, Google Cloud Platform, and Amazon Web Services. My goal is centered around a single idea: bringing simplicity into complexity. With my vast knowledge and hands-on approach, I ensure that every project is meticulously crafted to provide exceptional results that exceed expectations. Choose me as your development partner, and I will work tirelessly to take your business to the next level.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Web Application
    Angular
    Database Maintenance
    API
    API Integration
    Database Design
    CSS
    HTML
    PHP
    JavaScript
    Claris FileMaker
    Apple Xcode
    FileMaker WebDirect
    Business with 100-999 Employees
    Adobe XD
  • $50 hourly
    I'm an Oracle-certified Java expert with much experience in backend technologies, including but not limited to Spring Framework, JPA, MongoDB, etc. I'm also an AWS-certified and Kubernetes-certified DevOps engineer; hence, I can help if you need additional infrastructure resources. With 15,000+ hours of work on Upwork alone, I believe I can make a meaningful contribution to your project. As a side note, if you do a Google search with the keywords "spring bean", "spring boot interview questions", or "maven integration testing", you'll find my writing at the top spots.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Terraform
    Docker
    Web Service
    Hibernate
    RESTful API
    MySQL
    API
    Kubernetes
    Amazon Web Services
    Spring Framework
    Spring Boot
    Java
  • $80 hourly
    Bubble.io Agency co-founder (nocode.gdn) and highly skilled and experienced Bubble.io developer with a proven track record of success. I have a strong understanding of the Bubble.io platform and its capabilities, the latest AI technologies, and project management.
    vsuc_fltilesrefresh_TrophyIcon API Development
    FlutterFlow
    LangChain
    Web Application
    Chatbot Development
    Artificial Intelligence
    No-Code Development
    Stripe API
    ChatGPT API Integration
    Web Development
    GPT-4
    Bubble.io
    API
    Project Management
    Dashboard
    Automation
  • $25 hourly
    Professional Summary Self-motivated having demonstrated history of working experience as a software developer in a servicebased industry and product-based industry. Skilled in Python, Django, SQL, Power BI. Knowledgeable on AWS concepts, DevOps concepts
    vsuc_fltilesrefresh_TrophyIcon API Development
    ASP.NET Web API
    JavaScript
    CSS 3
    AngularJS
    Agile Project Management
    Angular Material
    Flask
    .NET Framework
    Amazon Web Services
    API
    Django
    C#
    Python
  • $70 hourly
    Full Stack Python/PHP developer with over 15 years of freelance experience. Python: - data collection (web scraping/crawling, API clients) - data extraction/conversion - data analysis/visualisation (Pandas, NumPy, Matplotlib, JupyterLab) - web development (Flask, Django) PHP: Laravel, Symfony Databases: PostgreSQL, MySQL, SQLite, MSSQL Git Javascript: Vue, vanilla, jQuery CSS: SCSS, Bootstrap, Foundation APIs: AWS, Stripe, QuickBooks, Google Maps, Wikipedia, Spotify, MusicBrainz
    vsuc_fltilesrefresh_TrophyIcon API Development
    API
    Data Science
    Automation
    MySQL Programming
    Vue.js
    Intuit QuickBooks
    Front-End Development
    Laravel
    JavaScript
    ETL
    Data Scraping
    PHP
    pandas
    Python
  • $75 hourly
    "Weverson took the time to understand my business, and delivered everything we asked on time." (Ben B.) Hey there! I've got 2,845+ hours as a full-time Bubble Developer, 13 years in Web Development, and a Graphic Design degree. If you're looking to integrate Bubble.io with AI and other tools, my experience covers APIs like OpenAI (ChatGPT/GPT-4), QuickBooks, Binance, Stripe, PayPal, SignNow, and more. I've worked on diverse projects including marketplaces, cryptocurrency platforms, city guides, dashboards, sports management, finances, and more. One client, Cameron, described me as a "very talented Bubble developer who communicates well, is reliable, and thinks entrepreneurially which means he'll present ideas and offer suggestions on how to improve existing ideas". Another client, Jeff, highlighted my "top-notch UI/UX skills". I use AI assistance daily with Bubble to speed up my workflow and get things done quicker. Let's chat. I'm excited to understand your business and see how I can help. Cheers, Weverson
    vsuc_fltilesrefresh_TrophyIcon API Development
    Mobile App Design
    No-Code Development
    Bubble.io
    Web Application
    API
    App Design
    API Integration
    Web UI
    Web Design
  • $65 hourly
    FullStack developer with nearly a decade of hands-on experience. I have developed and implemented several solutions for clients ranging from Rest APIs in Node to full scale web development in React and Vue. I am proficient in responsive design for landing pages, websites, and product sites as well as performant backend applications. My process: 1. Briefing/Discussion 2. Research 3. Design Concept/Prototyping 4. Design Development/Application Construction 5. Revisions 6. Delivery I strive to meet my clients' expectations and deadlines with professional results. I look forward to discussing your project together. Highlighted Skills: React.js, Next.js, Vue, Node, Git, GitHub, HTML, CSS, Tailwindcss, Bootstrap, Javascript, TypeScript, Firebase, NoSQL
    vsuc_fltilesrefresh_TrophyIcon API Development
    Tailwind CSS
    RESTful API
    MySQL
    JavaScript
    HTML
    React
    CSS
    Node.js
    TypeScript
    MongoDB
    Vue.js
    API
  • $15 hourly
    Backend web application and Api development with procedural and high speed optimized(with LLVM) languages ,android and iOS Mobile Developer, Desktop application development
    vsuc_fltilesrefresh_TrophyIcon API Development
    Flutter
    API
    RESTful API
    Java
    Python
    SQL
    Flask
    HTTP
    Golang
    Dart
    PostgreSQL
    MongoDB
  • $40 hourly
    Award winning Software and Database expert, delivered 200+ different projects include desktop applications, web applications / business websites and large Databases in various sectors. My professional career has been running on three separate but often closely related tracks: Desktop, Web & Mobile Application Development, Database Programming (Design & Development, stored procedures, functions, complex queries, SQL Jobs, Disaster management, optimization....) In the last couple of years my work has been focused on the first two fields. I have excellent troubleshooting and debugging skills developed over the years of engineering work. I am a patient, thorough person with high attention to detail. I can provide consultation, software development, Database Design & Development, testing/debugging and other related services ranging from short one-hour job to full-time every day work, to long-term cooperation and support. I do not have any issue to work as a team member with other freelancers you hired. Thank you for visiting my profile and I look forward to hearing from you!
    vsuc_fltilesrefresh_TrophyIcon API Development
    Enterprise Resource Planning
    Business with 1-9 Employees
    jQuery
    API Integration
    PHP
    HTML
    ASP.NET MVC
    Database Design
    Web Application
    JavaScript
    API
    Web Development
    C#
    SQL
  • $42 hourly
    If you are looking for an independent and proactive web developer with a wide range of skills, you have come to the right place. I am an information retrieval and ranking specialist, well versed at helping clients index and search their data swiftly and efficiently. I am at my most efficient working with Python frameworks like Flask or Django, Elasticsearch and SQL databases. Beyond that I can help you build full-fledged web applications, websites, APIs or other custom software. I can join your teams to get a new feature up and running quickly. I do site migrations, Linux system administration, maintenance. I am well versed in ETL operations. I can help you with raspberry pi projects, 3D modeling and specialized research tools. I have 5 years of experience with professional freelance web development, 10 editing and creating media & a good track record of working with designers. We've won awards together. Most notably, The Grand Prix at the 5th Brumen Biennal. Since web technologies are in constant motion, I stay familiar with a wide range of tools/frameworks: python (flask, django, fastapi), elasticsearch, sql (postgresql, mysql, sqlite), js/jquery, html/css/scss, vue.js, angular.js, babylon.js, docker, aws, openrefine, processing, wordpress, prestashop, typesense And while technologies come and go and stacks change, the tasks a developer faces remain the same: assess requirements, choose the appropriate design pattern, write clean reusable and debuggable code, write tests, solve problems efficiently, design storage optimally, understand the end-user, communicate patiently and concisely, identify/remove bottlenecks, take ethical/political challenges seriously etc. I can help you with all of those and more. I am generally curious but particularly interested in working on projects which look to address social, organizational, political or artistic issues. Move fast. Don't break things. Open source them. My educational background is in journalism and media studies. I wrote an MA dissertation on the history of dashboards and live data visualization (Goldsmiths College) and a PhD on the political aspects of valuation via metrics (Coventry University).
    vsuc_fltilesrefresh_TrophyIcon API Development
    Django
    SQL
    Flask
    Data Cleaning
    PHP
    JavaScript
    Vue.js
    Linux System Administration
    Elasticsearch
    IT Consultation
    API
    Python
  • $30 hourly
    Mastery of software architecture and software development cycles. In-depth knowledge of the Java / JEE platform and the development of web applications. Mastery of JEE, Java, SOAP & REST web services, JPA, Angular,AngularJS, HTML5, Javascript, CSS 3, Bootstrap, Angular, Spring Boot,SpringBatch. Mastery of Docker , Docker Swarm , Microsevice architecture. Mastery of Java play framework. Mastery of framework Spring. Good knowledge of continuous integration implementation (Gradle,Maven, Svn, Git, Jenkins, Gitlab-CI). Good knowledge of TOMCAT, JBOSS. Good knowledge of database management systems: MySQL, ORACLE, POSTGRESQL. Quick learning ability of new languages and APIs. Experience in agile methodology. Ability to work independently and in a team.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Oracle PLSQL
    Jakarta EE
    Microservice
    Angular
    API
    Apache Maven
    Continuous Integration
    Spring Boot
    Git
    Jenkins
    Java
    JetBrains IntelliJ IDEA
    Docker
    Linux
    PostgreSQL
  • $75 hourly
    Full-Stack developer specializing in WordPress with 10+ years of experience, great feedback and high quality work! I can develop and customize a professional & modern website or app tailored for your business that attracts customers and gets your core message across. My specialty is in WordPress theme & plugin development. I can modify an existing template to fit your design needs and develop or modify custom plugins/apps to improve your website functionality. Aside from WordPress, I can also develop custom apps in React, PHP, Laravel and Javascript and many more frameworks/libraries! If you are looking for reliable, high quality work w/ great communication, I'm your guy.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Laravel
    Game Development
    React Native
    Mobile App Development
    API
    WordPress Development
    CSS
    HTML
    Node.js
    Sass
    HTML5
    JavaScript
    React
    PHP
    WordPress
  • $50 hourly
    Hi, I am Anastasiia, a Salesforce full-stack developer. I have over 3 years of experience related to Salesforce functionality on more than 10 projects. My high skills are: ◼️ Salesforce administrative work: work with objects, record types, page layouts, permissions, profiles, reports, and dashboards; ◼️ Salesforce Automation: flows, process builders, workflow rules; ◼️ Salesforce development: APEX Triggers, Batches, Scripts, Custom actions for flows; ◼️ LWC, VisualForce pages; ◼️ Salesforce Community administration; ◼️ Data import/Data export; ◼️ Packaging, deployment experience. I am open to any opportunities and will work with effort and dedication. Contact me for further information. Thanks!
    vsuc_fltilesrefresh_TrophyIcon API Development
    Salesforce CRM
    Salesforce Lightning
    Visualforce
    Salesforce
    Apex
    SOQL
    JSON
    Salesforce App Development
    API
    SQL
  • $50 hourly
    𝗜 𝗵𝗲𝗹𝗽 𝗲𝗻𝘁𝗿𝗲𝗽𝗿𝗲𝗻𝗲𝘂𝗿𝘀 𝗱𝗲𝘃𝗲𝗹𝗼𝗽 𝗜𝗻𝗻𝗼𝘃𝗮𝘁𝗶𝘃𝗲 𝗪𝗲𝗯 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀! 𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗲𝗱 𝗶𝗻 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁, 𝗜 𝗼𝗳𝗳𝗲𝗿 𝘁𝗼𝗽-𝗻𝗼𝘁𝗰𝗵 𝘄𝗲𝗯 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗶𝗻𝗰𝗹𝘂𝗱𝗶𝗻𝗴 𝗖𝗥𝗠 / 𝗖𝗠𝗦 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁, 𝗔𝗜 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀, 𝗖𝗵𝗮𝘁𝗯𝗼𝘁 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁, 𝗮𝗻𝗱 𝗮𝗱𝘃𝗮𝗻𝗰𝗲𝗱 𝗗𝗮𝘁𝗮 𝗔𝗻𝗮𝗹𝘆𝘁𝗶𝗰𝘀 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀. Please explore my portfolio to get a sense of the quality of my work 🎯 📞 Invite me to your job on Upwork to schedule a complimentary consultation call to discuss how we can create a solution for your business ⭐️⭐️⭐️⭐️⭐️ ❝𝘈𝘷𝘪𝘯𝘢𝘴𝘩 𝘪𝘴 𝘢 𝘵𝘳𝘶𝘦 𝘵𝘢𝘭𝘦𝘯𝘵. 𝘛𝘩𝘢𝘯𝘬𝘧𝘶𝘭𝘭𝘺 𝘸𝘦 𝘧𝘰𝘶𝘯𝘥 𝘩𝘪𝘮 𝘢𝘯𝘥 𝘩𝘦 𝘶𝘯𝘥𝘦𝘳𝘴𝘵𝘢𝘯𝘥𝘴 𝘸𝘩𝘢𝘵 𝘸𝘦 𝘢𝘳𝘦 𝘵𝘳𝘺𝘪𝘯𝘨 𝘵𝘰 𝘢𝘤𝘩𝘪𝘦𝘷𝘦 𝘢𝘯𝘥 𝘩𝘦 𝘮𝘢𝘬𝘦𝘴 𝘪𝘵 𝘸𝘰𝘳𝘬 𝘧𝘰𝘳 𝘶𝘴. 𝘕𝘰𝘵𝘩𝘪𝘯𝘨 𝘪𝘴 𝘵𝘰 𝘮𝘶𝘤𝘩 𝘵𝘳𝘰𝘶𝘣𝘭𝘦 𝘢𝘯𝘥 𝘩𝘦 𝘪𝘴 𝘱𝘢𝘵𝘪𝘦𝘯𝘵 𝘸𝘪𝘵𝘩 𝘰𝘶𝘳 𝘭𝘢𝘤𝘬 𝘰𝘧 𝘴𝘬𝘪𝘭𝘭𝘴❞ - 𝘋𝘦𝘣𝘰𝘳𝘢𝘩 𝘗𝘳𝘪𝘰𝘳, 𝘋𝘪𝘳𝘦𝘤𝘵𝘰𝘳, 𝘘𝘶𝘦𝘦𝘯𝘴𝘭𝘢𝘯𝘥 𝘚𝘱𝘪𝘵 𝘙𝘰𝘢𝘴𝘵 𝘊𝘢𝘵𝘦𝘳𝘪𝘯𝘨 𝗔𝗿𝗲𝗮 𝗼𝗳 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: 💼 CRM Development 📈 Data Analytics Platforms 🧠 AI Solutions 🤖 Chatbot Development 📚 CMS Development 𝗠𝘆 𝗯𝗮𝗰𝗸𝗴𝗿𝗼𝘂𝗻𝗱 𝗶𝗻 𝗡𝘂𝗺𝗯𝗲𝗿𝘀: 🔸 8+ years experience in Full-Stack Development 🔸 Certified Ethical Hacker 🔸 Ranked #719 on HackTheBox 🔸 Certified Prompt Engineer 🔸 100% Job Success Score 🔸 Top Rated Plus (Top 3%) on Upwork 𝗜 𝗮𝗺 𝗮 𝗴𝗿𝗲𝗮𝘁 𝗳𝗶𝘁 𝗳𝗼𝗿 𝘆𝗼𝘂 𝗶𝗳 𝘆𝗼𝘂: ✅ Need a stable, scalable and secure project which handles complexities like a breeze. ✅ Need fully custom-made web app which is crafted to your needs. ✅ Hate micromanaging developers, testers & designers. ✅ Need someone take this project, and get it done RIGHT - the first time! 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: ✅ PHP ✅ Python ✅ Laravel ✅ Django ✅ VueJs ✅ InertiaJs ✅ Livewire ✅ Tailwind ✅ Web Security ✅ Servers and Firewalls ✅ OpenAI / ChatGPT / Chatbot Development You've got yourself a cross-discipline Full-Stack Development Expert who will own handle your project from design to development. Too often, the main message gets lost in the shuffle when working with a team or agency. But rest assured, that won't happen with me. I'm your go-to guy, dedicated to nailing every detail I hope you become one of my many happy clients. Reach out by inviting me to your project. I look forward to it! ⭐️⭐️⭐️⭐️⭐️ ❝𝘈𝘷𝘪𝘯𝘢𝘴𝘩 𝘪𝘴 𝘴𝘵𝘪𝘭𝘭 𝘵𝘰 𝘥𝘢𝘵𝘦 𝘵𝘩𝘦 𝘣𝘦𝘴𝘵 𝘥𝘦𝘷𝘦𝘭𝘰𝘱𝘦𝘳 𝘐 𝘩𝘢𝘷𝘦 𝘸𝘰𝘳𝘬𝘦𝘥 𝘸𝘪𝘵𝘩. 𝘕𝘰𝘵 𝘰𝘯𝘭𝘺 𝘥𝘰𝘦𝘴 𝘩𝘦 𝘦𝘹𝘦𝘤𝘶𝘵𝘦 𝘸𝘪𝘵𝘩 𝘤𝘭𝘦𝘢𝘯 𝘤𝘰𝘥𝘦, 𝘢𝘯𝘥 𝘲𝘶𝘪𝘤𝘬𝘭𝘺, 𝘣𝘶𝘵 𝘩𝘦 𝘢𝘭𝘴𝘰 𝘱𝘳𝘰𝘷𝘪𝘥𝘦𝘴 𝘪𝘯𝘱𝘶𝘵 𝘸𝘩𝘦𝘯 𝘩𝘦 𝘣𝘦𝘭𝘪𝘦𝘷𝘦𝘴 𝘴𝘰𝘮𝘦𝘵𝘩𝘪𝘯𝘨 𝘴𝘩𝘰𝘶𝘭𝘥 𝘣𝘦 𝘥𝘰𝘯𝘦 𝘢 𝘥𝘪𝘧𝘧𝘦𝘳𝘦𝘯𝘵 𝘸𝘢𝘺 𝘵𝘰 𝘪𝘮𝘱𝘳𝘰𝘷𝘦 𝘶𝘴𝘦𝘳 𝘦𝘹𝘱𝘦𝘳𝘪𝘦𝘯𝘤𝘦 𝘢𝘯𝘥 𝘮𝘰𝘳𝘦.❞ - 𝘑𝘢𝘤𝘰𝘣 𝘔𝘰𝘳𝘢𝘯, 𝘊𝘌𝘖, 𝘛𝘩𝘦 𝘓𝘭𝘢𝘮𝘢 𝘎𝘳𝘰𝘶𝘱𝘴
    vsuc_fltilesrefresh_TrophyIcon API Development
    Laravel
    Front-End Development
    API Integration
    Vue.js
    PHP
    HTML
    Chatbot
    ChatGPT
    GPT-4
    Web Application
    Minimum Viable Product
    CRM Development
    Web Development
    Full-Stack Development
    Web Design
  • $50 hourly
    I'm a Fullstack developer with a strong focus on Frontend development, particularly in the realm of React and its associated ecosystem. I'm also well-versed in Typescript, which I find quite fascinating. My skills are grounded in practical experience, and I'm comfortable working with the following frameworks: ✅ React ✅ Next JS ✅ Typescript ✅ Tailwind CSS ✅ Storybook When it comes to databases, I prefer working with Postgresql. Additionally, I have proficiency in backend development, positioning me as a well-rounded developer with a primary emphasis on the frontend. My toolkit includes: ✅ NestJS ✅ AWS ✅ Express I approach every project with a serious and dedicated mindset, ensuring that your projects are in capable hands. If you have any questions or would like to discuss potential collaborations, feel free to get in touch. I'm always open to your messages! 📞
    vsuc_fltilesrefresh_TrophyIcon API Development
    API
    AWS Lambda
    Tailwind CSS
    Next.js
    TypeScript
    ExpressJS
    JavaScript
    Node.js
    React
  • $70 hourly
    Software architect and developer passionate about the following: (and more)... - Communication (Great English Speaking Communication Skills for All Levels of Business) - Web Developer (.Net, Javascript, Angular, Typescript, NodeJS etc.) - Database Administrator / Developer (MS SQL, SQL Server, Azure SQL) - Azure Dev Ops Architect and Trainer (Azure DevOps Engineering) - Scripting Genius (Powershell, Command Line, C#, C++) - Process Improvement and Training (Git Integrations and Workflow) - Desktop App Developer (Windows Forms and Shell Integrations) - Project and Program Management (Scrum, Agile, Process Improvement and Risk Management)
    vsuc_fltilesrefresh_TrophyIcon API Development
    Database Design
    .NET Core
    Angular
    ASP.NET
    Android
    C#
    API
    Web Hosting
    Microsoft SQL Server
    Database Programming
    ASP.NET MVC
    Web Development
    SQL
    GitHub
  • $20 hourly
    Creative and versatile full-stack web developer with a bachelor's degree holder in Computer Studies and 8 years experience in web development. If you're looking for a developer who can do all-around work in managing your website not just in development but also in bringing on the internet/production, I'm happy to help! ^_^ DevOps Services: • Linux Servers • Nginx • Apache • Digital Ocean Droplets • AWS • Cpanel • Web Hosting • SSL Certification Development Services • Database Designing • Project Planning • Laravel / Codeigniter • PHP • Laravel Nova • Elastic Search • Rest API Integrations • OAuth2 Integrations • MySQL Database • PostgreSQL Database • NodeJS • Vuejs • Bootstrap • Vuetify/BootstrapVue • HTML/JS/CSS • Github • Google Script Third-Party Integration Services • Stripe Integration • Active Campaign My rate still depends after we discussed the project/work to be delivered. If you wanted to know more, feel free to leave a message and we'll discuss your project.
    vsuc_fltilesrefresh_TrophyIcon API Development
    API Integration
    API
    Laravel
    WordPress
    Vue.js
    Web Application
    CodeIgniter
    OpenCart
    Bootstrap
    jQuery
    MySQL
    JavaScript
    PHP
    CSS
    HTML
  • $330 hourly
    𝐑𝐚𝐩𝐢𝐝 𝐑𝐞𝐬𝐮𝐥𝐭𝐬, 𝐋𝐨𝐰 𝐓𝐨𝐭𝐚𝐥 𝐂𝐨𝐬𝐭⚡ | My focus on efficiency means not just faster delivery but a budget-friendly approach. Let's accelerate your success without breaking the bank. Ready for 𝐜𝐨𝐬𝐭-𝐞𝐟𝐟𝐞𝐜𝐭𝐢𝐯𝐞 excellence? 𝐒𝐞𝐧𝐝 𝐦𝐞 𝐚 𝐦𝐞𝐬𝐬𝐚𝐠𝐞! ⭐⭐⭐⭐⭐ rating ✅ ﹥150 projects completed ✅ 20 years of professional experience ✅ 15 years of Python ✅ Startup / SMB clients only I solve problems. When writing software I happen to use Python, which I know on expert level, achieving senior developer skills over a decade ago and then building on top of it... but ideally I would solve the problem without writing any code. Code, you see, has a cost. It has to be written, tested, documented, supported, maintained, updated, debugged, hosted and handed over. The most elegant solutions alter the shape of the project in such a way that the amount of code required to run it is reduced as much as possible. What you really need, is a solution and I guarantee that a more junior developer will try to use your money to solve your problem with code... but is that really what your startup needs, a lot of code written by an intermediate developer who won't be around to maintain it when it starts cracking under pressure in a year or two? There is one notable thing more expensive than code, you see - it's writing the same code two or three times. Most of my clients end up hiring a cheap developer to write a prototype and then when their business takes off that codebase and developer can no longer cut it. When it takes off, you need a professional to follow the best practices, you need someone who has been getting up at 3:26AM 3 times a week to fix a server in 2006, so now he learned how to build software the doesn't break (or self-heals if something happens). Lets write it once and do it well. 𝐒𝐨𝐦𝐞 𝐨𝐟 𝐦𝐲 𝐫𝐞𝐜𝐞𝐧𝐭 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬📜: - subscription-based SaaS educational platform for poker players - financial data warehouse which aggregates over 30000 time series into a few hundred charts for a fintech company from London - real estate data harvesting/scraping project tracking >100 mln objects - multi-tenant hospitality management system for large properties in the US - graph data search/visualization system for auditors from the Netherlands - custom FUSE filesystem for a cloud-based PoS cryptocurrency farm - super scalable WAF optimized for extremely low running costs for a client from Chicago, IL - highly scalable mobile game backend for poker players - non-greedy multisource cloud object synthesizer library for a storage provider from San Mateo, CA - report generator/inventory tracker for an e-commerce/healthcare company from Canada - k8s-based revenue optimizer for large private GPU compute clusters in North America - large-scale information display system for a big US retailer - cost-efficient continuous recorder of thousands of camera feeds for a client from Florida - hydrant certification report generator for Australian plumbers - paper product level tracker for toilet cleaners from Canada 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲🔒: - 2FA enabled everywhere - customer data always kept on an encrypted partition - backups and disaster recovery since the first day of the project 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧📞: - customer's environment (Slack & Zoom) - professional issue tracker (I provide Jira integrated with the time tracker)
    vsuc_fltilesrefresh_TrophyIcon API Development
    Flask
    Python
    Business with 1-9 Employees
    Software Debugging
    API
    Performance Optimization
    Django
    Web Application
    API Integration
    SQL
    Database Design
    Python-Requests
    PostgreSQL Programming
  • $35 hourly
    8+ years of experience in Pimcore Development and open technologies. I am a Certified Pimcore Developer with all 4 certificates 🎖️🎖️CERTIFIED PIMCORE DEVELOPER 🎖️🎖️ 💻 CONNECT ME ON SKYPE: rohit.raj.verma ✅ Top Rated ✅ 10+Years Exp ✅ Fortune 500 Companies SPECIALIZED PIMCORE ECOMMERCE | PLUGIN DEVELOPMENT | MAGENTO | SHOPIFY | WOOCOMMERCE INTEGRATION Developed more than 20+ PIM, DAM, CMS etc. Expertise in open source frameworks like Pimcore Symfony, Javascript, Shopify, Ext Js, Vue Js, Docker Hands on cloud platform Amazon Web Services and deployment tool Jenkins. Check my Pimcore Bundles @Github 😎 Username: rohitrajv5 ✅ Fullstack development in Pimcore 5, 6 and X ✅ Experience in application deployment on AWS, GCP, Azure ✅ Worked on Pimcore integration with Magento, Shopify, Google, Facebook, Amazon etc ✅ REST & SOAP API's for Mobile apps and third party integrations ✅ Worked with versioning tools like GIT, SVN, Bit Bucket ✅ E-commerce & Payment gateway inegration with Pimcore, Symfony, Laravel ✅ Actively contribute to communities like GitHub and Stack Overflow ✅ Experienced in Remote work with worldwide clients My key skills and abilities include : ✅ Pimcore, Frameworks with Laravel, Python,Zend ✅ Javascript, CSS3, HTML5, Angular, Ember , React ✅ PHP, MySQL(with Doctrine), NodeJS, ✅ Webservices, AJAX, RESTful, XML ✅ CMSs with Wordpress(woocommerce), Joomla, Drupal I have good communication skills and interacting with customers as well as users and translating their requirements into specifications for the Development Team. I AM LOOKING FOR FULL REMOTE DEVELOPER JOB
    vsuc_fltilesrefresh_TrophyIcon API Development
    Pimcore
    API Integration
    RESTful API
    Symfony
    JavaScript
    API
    PHP
    MySQL
  • Want to browse more freelancers?
    Sign up

How it 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

API Developers Hiring FAQ

What is an API (breaking down the acronym)?

Application: Think of an application like an ATM. When you walk up to an ATM, you expect it will allow you to access your account and complete a transaction like withdrawing cash. Like an ATM, an app provides a function, but it’s not doing this all by itself—it needs to communicate both with the user, and with the “bank” it’s accessing.

An app deals in inputs and outputs, too. A web, mobile, or back-end application is like a machine that solves a specific problem. The software may be a customer-facing app like a travel booking site, or a back-end app like server software that funnels requests to a database.

Programming: APIs allow the ATM to communicate with your bank. The programming is the engineering part of the app’s software that translates input into output. In other words, it translates your request for cash to the bank’s database, verifies there’s enough cash in your account to withdraw the requested amount, the bank grants permission, then the ATM communicates back to the bank how much you withdrew so that the bank can update your balance.

Interface: A user interface (UI) is how we interact with an application. In the case of the ATM, it’s the screen, keypad, and cash slot—where the input and output occurs. We enter our pin number, punch in how much cash we’d like to withdraw, then take the cash that’s spit out. Interfaces are how we communicate with a machine. With APIs, it’s much the same, only we’re replacing users with software.

In a nutshell, that’s an API: an interface that software uses to access whatever currency it needs: data, server software, or other applications. In the case of the ATM, the machine is the end-user of an API, not the customer pressing the buttons. It’s the same in the digital world.

The Components of APIs: What You’re Sharing and Who You’re Sharing It With

  1. All APIs begin with shared assets—they’re the currency of an API. They can be anything a company wants to share—whether that’s internally between teams, or externally with other developers: data points, pieces of code, software, or services that a company owns and sees value in sharing.
  2. Next is the API, which acts as a gateway to the server. It provides a point of entry for your audience—developers who will use those assets to build their own software—but it also acts like a filter for those assets. You never want to open up your entire server and all of its contents to the outside world. APIs only reveal what you want them to reveal.
  3. The immediate audience of an API is rarely an end user of an app; it’s typically developers creating software or an app around those assets. This is where assets take flight, yielding creative, new ways to implement data that previously, may or may not have had any real business value to its owner. It also lets developers use reusable software components so they’re not repeating work that’s already been done.
  4. All of this results in apps that are connected to data and services, allowing these apps to provide richer, more intelligent experiences for users. API-powered apps are also compatible with more devices and operating systems, providing more seamless experiences.
  5. In the end, the beneficiaries of these apps are the end users themselves. The apps enable end users tremendous flexibility to access multiple apps seamlessly between devices, use social profiles to interact with third-party apps, and more.

How do APIs work?

APIs have endless business opportunities. So how can you leverage the functionality explained above? Here are a few ways to think about APIs and how they can work for you.

  • APIs act as a doorway that people with the right key can get through. Want to give specific people—but not everyone—access to your assets? An API acts like a doorway to your server and database that those with an API key (or a paid subscription) can use to access whatever assets you choose to reveal. A key could give a user read access, write access, or both—it’s up to you.
  • APIs let applications (and devices) seamlessly connect and communicate. An API can create a seamless flow of data between apps and devices in real time. This not only lets developers create apps for any format—a mobile app, a wearable, or a website—it allows apps to “talk to” one another. This is the heart of how APIs create rich user experiences in apps.
  • APIs let you build one app off another app. Entire businesses and popular web applications like Hootsuite, Zapier, and IFTT (If This Then That) have been built solely on creative ways to leverage APIs. APIs allow you to write applications that use other applications as part of their core functionality. Not only can developers get access to reusable code and technology, they can leverage other technology for their own apps.
  • APIs act like a “universal plug.” What if all of those people with keys to your door speak different languages? With an API, it doesn’t matter—everyone, no matter what machine, operating system, or mobile device they’re using—gets the same access. Think about those universal outlet plugs that let you use an appliance in any country’s socket. An API is a lot like that; it standardizes access.
  • APIs act as a filter. Security is a big concern with APIs—after all, you’re giving outsiders access to your servers and all they contain—which is why they have to be carefully constructed. APIs should give controlled access to assets, with permissions and other measures that keep too much traffic—or malicious traffic—from bringing down your server. This is a very important API design consideration for industries that are heavily regulated, like healthcare and finance.

Public APIs vs. private APIs: Wwhat’s the difference?

Two Types of APIs with Two Very Different Value Chains

A public API is probably what first comes to mind when you think about APIs: the Twitter API, Facebook API, Google Maps API, and more. But these are only a small portion of the APIs that exist around the web. While you may not hear much about them, private APIs are far more common (and possibly even more beneficial, from a business standpoint). Public APIs are much more restricted in the assets they share, given they’re sharing them publicly with developers around the web. Private APIs are all about productivity, partnerships, and facilitating service-oriented architectures.

Private APIs: The Self-Service Developer & Partner Portal

Private APIs are revolutionizing how things get done within companies. By providing an open architecture, private APIs give developers an easy way to plug right into back-end systems, data, and software, letting engineering teams do their jobs in less time, with fewer resources. It’s like a self-service user experience for internal developers.

A private API can save time and resources, streamline collaboration, and give developers unfettered access to everything they need. More companies see value in “consuming their own APIs.” In fact, of the billions of API calls made, around two-thirds of those calls are companies making calls to their own APIs.

Private APIs can also reduce operating costs, eliminating the need for layers of web services, back-end applications, and server resources. On the partnership front, versions of private API can be customized for partners, enabling faster technical integrations.

Takeaway: Companies primarily use private APIs to improve agility, flexibility, and velocity. This often translates to remaining competitive, higher productivity, and improved efficiencies.

Public APIs: Granting Outside Access to Your Assets

Open APIs are all about letting the outside world in. They provide a set of instructions and standards for accessing the information and services being shared, making it possible for external developers to build an application around those assets. This entire concept (and APIs in general) is somewhat borrowed from the idea of open-source software: create it, open it up to users, then let them run with it.

Some public APIs are even growing faster than original lines of business. Companies like Salesforce are seeing business through their APIs outpacing their original focus, reportedly generating 50 percent of their revenues through APIs.

Speak with top API freelancers by visting our API development services page or if you need someone to help QA your software you can enlist help from our software QA services page.

 

View less
API developer Hiring Resources
Learn about cost factors Hire talent
Schedule a call