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
  • $100 hourly
    Results-driven software engineer with over 20 years of experience designing, developing, and optimizing Java-based SaaS web applications, system architectures, and API-driven integrations. Adept at modernizing legacy systems, upgrading Java JDK versions, managing third-party dependencies, and implementing security and vulnerability mitigations. Proven expertise in troubleshooting and optimizing critical system functions, including JVM memory tuning, heap and thread dump analysis, and database performance tuning. Skilled in building scalable, high-performance applications by leveraging modern cloud infrastructure, CI/CD pipelines, and DevOps best practices. Passionate about solving complex technical challenges, improving system reliability, and enhancing application functionality and performance to drive business success. Technical Expertise: Backend Development: Java, Spring Boot, JPA, Hibernate, Tomcat, REST APIs, Maven Cloud & Infrastructure: AWS (EC2, S3, RDS, SQS, SES, QuickSight, Cognito, CodeDeploy, Lambda, Security Groups) Frontend Development: JavaScript, React, Angular, Material UI/MUI, jQuery, DataTables, HTML, CSS, Bootstrap Database Management: SQL (MySQL, SQL Server, Postgres), JDBC, Liquibase DevOps & Automation: CI/CD Pipelines, AWS CodeDeploy, BitBucket Pipelines, GitHub Actions, Docker, JIRA, Bamboo, Confluence
    Featured Skill API Development
    React
    Docker
    PostgreSQL
    Angular
    Microsoft SQL Server
    Amazon Web Services
    MySQL
    API
    JavaScript
    Java
    HTML
    Spring Framework
    Apache Tomcat
    Spring Boot
    Hibernate
  • $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.
    Featured Skill API Development
    Data Processing
    Automation
    Data Integration
    Pipedrive
    Data Entry
    API
    HubSpot
    Database
    CRM Software
    Salesforce
    PHP
    Laravel
    Node.js
    JavaScript
  • $35 hourly
    🚀 𝑨𝒘𝒂𝒓𝒅-𝒘𝒊𝒏𝒏𝒊𝒏𝒈 𝑺𝒐𝒇𝒕𝒘𝒂𝒓𝒆 & 𝑫𝒂𝒕𝒂𝒃𝒂𝒔𝒆 𝑬𝒙𝒑𝒆𝒓𝒕 With over 200+ projects delivered and 9+ years of experience as a Senior Full Stack Developer, I have developed a strong focus on building scalable and robust systems for businesses. Additionally, with 4-5 years of experience as a Consultant/Project Manager, I excel in leading teams and managing complex projects from conception to completion. 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 𝑬𝒙𝒑𝒆𝒓𝒕𝒊𝒔𝒆: Web & Desktop Application Development (Frontend: HTML, CSS, JavaScript, React | Backend: PHP, Laravel, Node.js, Python) Mobile Application Development (React Native) Database Design & Programming (SQL, MySQL, optimization) 𝑲𝒆𝒚 𝑻𝒆𝒄𝒉𝒏𝒐𝒍𝒐𝒈𝒊𝒆𝒔: Frontend: HTML, CSS, JavaScript, React Backend: PHP, Laravel, Node.js, Python (Django, Flask) Databases: SQL, MySQL, PostgreSQL, NoSQL Mobile: React Native, Flutter Security: Data encryption, secure development 𝑰𝒏𝒅𝒖𝒔𝒕𝒓𝒊𝒆𝒔 & 𝑺𝒆𝒓𝒗𝒊𝒄𝒆𝒔: SaaS Development (Custom platforms, subscription models) API Development & Integrations Data Scraping & Automation Third-Party Integrations (QuickBooks, Stripe, PayPal, Twilio, AI integrations) 𝑺𝒆𝒓𝒗𝒊𝒄𝒆𝒔 𝑶𝒇𝒇𝒆𝒓𝒆𝒅: Full-stack development (Web, Mobile, Desktop) Database Design & Optimization Troubleshooting & Debugging Consulting & Project Management for enterprises With my extensive experience, I ensure that enterprise-level projects are delivered efficiently and meet business goals. I’m known for my attention to detail, problem-solving skills, and collaborative approach. Let’s work together to bring your project to life!
    Featured Skill API Development
    Ecommerce Website
    MERN Stack
    Software Consultation
    SaaS Development
    Software Testing
    Software Development
    React Native
    React
    API Integration
    ASP.NET MVC
    Web Application
    JavaScript
    API
    Web Development
    C#
  • $195 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!
    Featured Skill API Development
    Web Design
    Google APIs
    Intuit QuickBooks
    FileMaker WebDirect
    HTML
    PHP
    JavaScript
    API
    QuickBooks Online
    Database Programming
    AppleScript
    Database Design
    Claris FileMaker
  • $200 hourly
    🥈 Certified Make.com Silver Partner 🥈 Thousands of hours and 1000+ automations built, managed, or optimized using Make.com or n8n across 100+ clients. We specialize in Make.com and n8n.io to build workflow automations and AI systems. Current Pricing🏷️: Initial projects: $3000 minimum With a combined experience of 35+ years working in across roles, including a combined 25+ years as small business owners, we know exactly what it means to work hard for your dollars. We've helped business doing $100k/yr all the way up to enterprise clients and we handle your business in the same way we treat our own by including you as an internal stakeholder. We take you from start to finish with: tech consultation to 1st iterations deployments to v2 improvements and beyond Our goal is to optimize your systems so you can relax knowing full well your operations are running smoothly. What you'll get with us: Help in the "Mastermind" process to create solutions that your employees and customers will find less complex and more enjoyable Automated systems that allow you to focus on the important tasks Integrated tech stacks to create more efficient workflows Automated multi-step and complex workflows Honesty around what should be an AI agent vs automated AI workflow (suprise! most should be an automated workflow) Training for your staff in n8n or Make.com (optional) Well documented processes so you can offboard with us anytime We've built automated systems with numerous platforms including: Bland.ai Keap Gravity Forms Wordpress Google Sheets Airtable Monday Clickup Teamwork PDF.co OpenAI/Anthropic/Azure/Gemini Supabase Metabase JustCall Five9 Private API's
    Featured Skill API Development
    Make.com
    WordPress e-Commerce
    CRM Automation
    Operational Planning
    Automation
    Zapier
    Marketing
    Marketing Operations & Workflow
    Business Operations
    WordPress Website
    WordPress Development
    WordPress
    API
    Gravity Forms
  • $99 hourly
    Hello! My name is Sheng, but I also go by Luigi. I’m a developer with experience in building applications for small and medium sized businesses using the Filemaker Platform. Whether you need an API Integration on Filemaker to another application, layout works, filemaker consolidation of files from fmp5 to fmp12, or anything Filemaker – I can help! • I’m experienced in Filemaker and have worked with many different customers as a consultant and developer. • I’ll fully manage your project from start to finished, giving frequent updates, define the development scope of the project in its entirety. • I have done API Integrations with Filemaker to other applications such as Woocommerce, Google API, SignNow, Badger Maps, Quickbooks, Shopify, JAMF, Oomnitza, etc. • You can expect great quality work on the level of Claris Partners and beyond.
    Featured Skill API Development
    API
    Web Service
    Web UI
    Server Administration
    Database Management System
    Automation
    App Development
    Claris FileMaker
  • $30 hourly
    A full-stack web developer, based out of Kathmandu, Nepal, creating pixel-perfect layouts, REST APIs, Dynamic web app, and more. I have experience with technologies such as HTML, CSS, JavaScript, Typescript, React.js, Next.js, Tailwind CSS, Redux, Express.js, Node.js, Nest.js, AWS, Docker, Firebase, MongoDB, etc. Being an avid problem solver, I love working on problems that challenge my aptitude. I have experience in both front-end and back-end. I am also well versed in API design, state management, database design, writing modular, reusable, and readable code, documentation, etc. I also provide unlimited revisions until the client is satisfied.
    Featured Skill API Development
    NestJS
    Front-End Development
    User Authentication
    React
    MongoDB
    Next.js
    RESTful API
    Firebase
    styled-components
    API
    TypeScript
    Node.js
    JavaScript
  • $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.
    Featured Skill API Development
    Python
    Web Application
    Angular
    Database Maintenance
    API
    API Integration
    Database Design
    CSS
    HTML
    PHP
    JavaScript
    Claris FileMaker
    FileMaker WebDirect
    Business with 100-999 Employees
    Adobe XD
  • $40 hourly
    Full stack web developer with +11 years experience in React, PHP, WordPress, JavaScript & .NET Here is the full list: - ReactJS, Express, NodeJS & MongoDB (MERN). - PHP, Laravel & MySQL. - HTML, CSS & Bootstrap. - Javascript & jQuery. - Wordpress & Elementor. - Electron. - Integration with Stripe & PayPal. - Integration with any API.
    Featured Skill API Development
    Linux
    MERN Stack
    Elementor
    API
    Game Development
    Database
    Web Development
    HTML5
    Laravel
    WordPress
    Node.js
    React
    JavaScript
    C#
    PHP
  • $39 hourly
    I have comprehensive experience developing websites with PHP (Custom | Laravel | Livewire) in the backend, and with Javascript (Vanilla | Vue | Alpine | JQuery) & CSS (Vanilla | Tailwind | Bootstrap) in frontend. I like to work with a Test Driven Development methodology and implement strategies of Continuous Integration/Continuous Deployment in the development and manteinance of quality software. Also, I like to implement flexible and solid patterns and architectures of software that allow for easy scalability and improvement of the application to adapt to the challenges of the business.
    Featured Skill API Development
    React
    Python
    Data Science
    R
    WordPress
    API Integration
    MySQL
    PHP
    JavaScript
    Vue.js
    Node.js
    Laravel
    Nuxt.js
    Web Development
    DevOps
  • $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).
    Featured Skill API Development
    Airtable
    Apache Kafka
    XML
    API Integration
    JSON
    Apache Maven
    Spring Integration
    Salesforce
    SnapLogic
    Spring Boot
    API
    CSS
    SQL
    JavaScript
    Java
  • $50 hourly
    Passionate Drupal developer, particularly interested in developing Drupal/PHP applications for the cloud. Always interested in migration projects, as well as close interaction with the database. I'm experienced in Drupal 6/7/8/9 and specialize in backend development, including migrations, custom module development and high-performance work. Rate negotiable for long term projects.
    Featured Skill API Development
    Amazon EC2
    Database Architecture
    Stripe
    Apache Solr
    MySQL
    API
    API Integration
    Twig
    PHP
    Ecommerce Website Development
    Drupal
    Git
    JavaScript
    HTML5
    Bootstrap
  • $25 hourly
    I’m a full-stack developer. My base goal is prompt development and qualitative product. I was developing: - multi-thread scrapers of Instagram followers - analysis publication activity web products for a major university - scraping bots for Instagram and FUT web app (for FIFA21) - working with own OpenStreetMaps tail server - various API services My base stack technologies: - Node.js / Express - Docker - PostgreSQL / Sequelize - React / Bootstrap - Redis / RSMQ - MongoDB / Mongoose - Puppeteer - OSM maps It is important for me that my customer is satisfied with a reliable, secure, and supported product. I will try to find the best solution for your business!
    Featured Skill API Development
    API
    Sequelize
    Web Crawling
    Automation
    Data Mining
    Data Extraction
    RESTful API
    ExpressJS
    Node.js
    React
    Docker
    MongoDB
    Redis
    PostgreSQL
  • $50 hourly
    With over 15 years of diverse experience spanning ten industries, I have evolved into a seasoned software engineer specializing in React/React Native applications and website development. My expertise extends to various website builders, including a decade of proficiency in Wix (including the Velo editor), coupled with hands-on experience in Squarespace, Wordpress, and several others. Key Skills: React / React Native Shopify Wix Squarespace Wordpress Analytics Installation Typeforms Integration Clickfunnels Implementation Tracking Features Setup My current focus involves elevating client websites through strategic installations of Analytics, Typeforms, Clickfunnels, and advanced tracking features. This ensures optimal performance and enhanced user experiences. Beyond my technical prowess, I bring a unique perspective to design and production value, influenced by my background as a performance-oriented Classical Operatic Baritone. This artistic sensibility adds a distinctive touch to the projects I undertake, ensuring a blend of functionality and aesthetic appeal. I've been an invaluable asset to marketing companies, contributing significantly to their success through expert Pixel and Analytics installation. My data analysis proficiency encompasses GA4, GTM, Google Ads, Linkedin, and TikTok pixels. This extends to performing comprehensive Pixel and Analytics audits, as well as social media marketing audits. Service Offerings: Website Creation and Enhancements Pixel and Analytics Audits Data Analysis Social Media Marketing Audits General tech help I am enthusiastic about collaborating with you to bring your digital visions to life. Let's create something extraordinary together!
    Featured Skill API Development
    RESTful API
    Ruby on Rails
    Pixel Setup & Optimization
    Google Analytics 4
    Search Engine Optimization
    Database
    Git
    Front-End Development
    React
    Squarespace
    Wix
    Landing Page
    CSS
    HTML
    JavaScript
    API
    Website
  • $140 hourly
    ⭐⭐⭐⭐⭐ "Mark did an excellent job on a complex project. I was very impressed with the end result! He was very responsive throughout the process and always went above and beyond. Definitely recommend and will be hiring him again soon!" - Andrew Stukey, Integrate XML payments with Shopify. Greetings! I'm Mark, a seasoned software engineer with a passion for crafting high-performance SAAS applications using Ruby on Rails and its latest surrounding technologies. With over two decades of professional experience in the field, I bring a deep understanding of software architecture, development best practices, and the evolving landscape of web technologies. Skills: Ruby Ruby on rails PostgreSQL API JavaScript CSS HTML Tailwindcss RESTful API Web development Heroku Amazon Web Services Experience: As a software engineer, I have worked with both Start-ups & Marketing companies for over 20 years I have a wide understanding of the whole lifecycle of development with a focus on delivering user friendly solutions. As a CTO I have helped guide a development team in delivering solid solutions. Whether you're seeking a complete SAAS app build, technical consultation, or bug resolution, I'm eager to contribute my expertise to your project. Let's discuss your requirements and create software that drives success. Availability: I'm open to short-term and long-term contracts and project-based work. Contact: mark@therubylab.com
    Featured Skill API Development
    Amazon S3
    API
    Ruby on Rails
    Shopify
    Amazon EC2
    Android App Development
    iOS Development
    AngularJS
    React
    Node.js
    React Native
  • $50 hourly
    🌟 Projects delivered with up to a 70% reduction in operational costs. ⏱️ Refactoring that improved performance by 50%. 🥇 Top 3% of Upwork Talent. 🏆 10+ years of Backend Developer experience. My clients received error-free scalable and highly effective software solutions, boosting their business efficiency and profitability. This not only gives them a competitive edge but also paves their way towards becoming market leaders. 𝐍𝐞𝐞𝐝 𝐞𝐟𝐟𝐞𝐜𝐭𝐢𝐯𝐞, 𝐇𝐢𝐠𝐡-𝐈𝐦𝐩𝐚𝐜𝐭 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬? 𝐇𝐞𝐫𝐞'𝐬 𝐰𝐡𝐚𝐭 𝐈 𝐜𝐚𝐧 𝐨𝐟𝐟𝐞𝐫: ✔️ API development for seamless connection and usage across platforms. ✔️ API integration with any third-party solutions. ✔️ Tailor-made systems from the ground up for automating business processes. ✔️ Custom infrastructure based on cutting-edge technologies to transform your ideas into reality and meet your business requirements. ✔️ Highly scalable database structures. ✔️ Real-time log analytics with commercial/custom dashboards. ✔️ CI/CD to automate your workflow from commit, testing, deployment, notification, and more. ✔️ Comprehensive testing across all project domains, encompassing all use cases, edge cases, and complete end-to-end scenarios. 𝐈 𝐜𝐚𝐧𝐧𝐨𝐭 𝐡𝐞𝐥𝐩 𝐞𝐯𝐞𝐫𝐲𝐛𝐨𝐝𝐲, 𝐛𝐮𝐭 𝐰𝐞 𝐦𝐚𝐲 𝐛𝐞 𝐚 𝐠𝐫𝐞𝐚𝐭 𝐟𝐢𝐭 𝐢𝐟 𝐲𝐨𝐮 𝐚𝐫𝐞 𝐭𝐡𝐢𝐧𝐤𝐢𝐧𝐠: ● "I need a solution that I can trust 100% to solve our problems RIGHT.” ● "We have ambitious goals and need a solution architect who can build scalable solutions to match our growth.” ● "I'm not satisfied with out-of-box applications. We need an expert who can build custom applications to meet our requirements.” ● "We're willing to invest in premium solutions that adhere to the highest industry standards. That’s why we need the BEST developers who place a premium on quality.” 𝐖𝐨𝐫𝐤𝐢𝐧𝐠 𝐰𝐢𝐭𝐡 𝐦𝐞, 𝐲𝐨𝐮 𝐰𝐢𝐥𝐥: ✔️ Save your money by getting clean, efficient code that is easy to read, understand, and extend for any future needs your business might have. A well-known fact is that a well-developed and SOLID principals-based application is much cheaper and faster to expand and modify than developing a new one from scratch whenever business requirements change. ✔️ Get support and warranty on all delivered projects. ✔️ Have a reliable and committed partner that guarantees tasks are executed flawlessly, punctually, and in the most effective manner. ✔️ Focus on more important tasks without distractions, as I handle your technical problems and challenges. ✔️ Witness rapid business expansion through advanced technology solutions customized to your company's needs. 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 & 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐊𝐧𝐨𝐰𝐥𝐞𝐝𝐠𝐞: 🔸 Backend Development: NodeJS, NestJS, Express, Fastify 🔸 Frameworks & Testing: Prisma, Jest, Passport, ESLint 🔸 Programming: JavaScript, TypeScript 🔸 Infrastructure as Code: Terraform, CloudFormation 🔸 API Development & Integration: RESTful, GraphQL, Google APIs, Stripe 🔸 SQL Management: PostgreSQL, MySQL, RDS 🔸 NoSQL Management: MongoDB, Redis, DynamoDB 🔸 Compute & Serverless: Lambda, EC2, API Gateway 🔸 Authentication & Authorization: Cognito, Auth0 🔸 Messaging & Notification Services: SES, SQS, SNS, EventBridge, AWS Chatbot 🔸 Storage & Content Delivery: S3, Amazon Location Service, Route 53, CloudFront 🔸 Networking & Security: VPC, IAM, KMS, Parameter Store 🔸 Monitoring & Data Analytics: CloudWatch, X-Ray, Athena, Amazon QuickSight 🟢 𝐑𝐞𝐚𝐝𝐲 𝐭𝐨 𝐓𝐚𝐤𝐞 𝐭𝐡𝐞 𝐍𝐞𝐱𝐭 𝐒𝐭𝐞𝐩? Let's connect! I'm passionate about employing my expertise to drive your project to new heights. Send me a message to explore how we can achieve groundbreaking success together.
    Featured Skill API Development
    Amazon Web Services
    TypeScript
    JavaScript
    API
    Node.js
    RESTful API
    NestJS
    ExpressJS
    Serverless Computing
    Back-End Development
    DevOps
    Solution Architecture
  • $120 hourly
    With an extensive Upwork client history profile and having been Expert-vetted by Upwork as being in the top 1% of freelancers, I look forward to working with you soon! I am an integrations expert and am able to use tools such as Zapier, Microsoft Power Automate (formerly called Flow), and Make (formerly called Integromat), to create API integrations between many different applications. I have a keen understanding of backend data and how to easily get relevant information from one system to another. Integrating systems on the backend helps business workflow to be simplistic, efficient, and fast. I have been working on integrations since 2016, and have linked together numerous CRMs, accounting systems, marketing systems, spreadsheets, etc in a variety of ways, some simple and some extremely complex. Given API documentation, I am able to build custom connections, triggers, and actions in Zapier for many cloud based applications that do not yet have Zapier integration. Some of my other skills include Javascript, Airtable, Google Sheets, Google Forms, Fillable PDFs, Softr, JotForm, Typeform, Fillout Forms, X2CRM, Excel, Canvas, Planning Center, TeamUnify, Amateur Radio Operator, French language. As the owner of Glaive Consulting, I understand the needs of the small business owner to automate as much of the business as possible to allow focus on client work. Task tracking, time tracking and invoicing and customer followup are among some workflows that I have optimized for my business. Let me help you do the same!
    Featured Skill API Development
    Automation
    Customer Relationship Management
    Microsoft Power Automate
    Airtable
    Make.com
    Report Writing
    Automated Workflow
    Relational Database
    API
    API Integration
    HubSpot
    Jotform
    Zapier
    JSON
    SQL
  • $75 hourly
    am an experienced project manager and expert developer specializing in AI-powered automation, custom web applications, databases, and low-code solutions. My focus is on delivering innovative, tailored solutions that empower businesses to work smarter, not harder. Over the past decade, I’ve partnered with organizations of all sizes to design tools and integrations that go beyond cookie-cutter software, driving efficiency and unlocking new capabilities. This profile predates Automaton Solutions, my company linked below, where we focus on cutting-edge AI technologies to transform workflows and automate complex operations. At Automaton Solutions, we are leaders in building AI-driven solutions tailored to your business needs. As certified partners of Make.com, Knack.com, Kintone.com, PDF.co, and other leading platforms, we specialize in crafting systems that integrate seamlessly with your operations. From AI automations and workflow optimization to advanced integrations, we ensure that every solution we deliver saves time, reduces costs, and adds value. Why Work With Us? AI-Focused Expertise: We specialize in AI-powered workflows and automations that revolutionize the way you work. Tailored Solutions: We design custom applications and integrations that adapt to your business needs. Proven Track Record: With thousands of successful integrations and automations, our work drives results. Industry Partnerships: As certified partners with leading SaaS platforms, we deliver cutting-edge tools and insights. Responsive Service: Our team is highly responsive, with most issues resolved within 1-2 hours. We’ve earned a 100% job success rate and glowing reviews over nearly a decade on Upwork, and we continue to build lasting partnerships with our clients. I’m always happy to explore how we can bring your vision to life. Let’s have a conversation about your goals and how we can help achieve them.
    Featured Skill API Development
    Make.com
    AI Implementation
    Xero
    Formstack
    Zapier
    API
    Knack
    Smarty
    jQuery
    JSON
    JavaScript
    PHP
  • $40 hourly
    I'm an experienced web developer with 8+ years’ experience in developing several Software As Service products. A deep understanding in User Experience (UX). My financial background allows me to understand more quickly the needs for the Fintech industry. AWS Certified Cloud Practitioner
    Featured Skill API Development
    Angular
    React
    PostgreSQL
    Django
    API
    CSS 3
    Flask
    SQL
    Docker Compose
    Python
    Amazon Web Services
  • $30 hourly
    I am a Web Developer and mainly focused on back-end work. My technical knowledge includes proficiency in PHP (Laravel framework), JavaScript (NodeJS, Vue.JS etc.), SQL and NoSQL databases (MySQL, DynamoDB, MongoDB etc) developing and constructing web sites from scratch to final product for client, elaborating terms of reference and working within the given ones to closely meet the deadlines. Besides I am easy to read and understand other people's code. Personal characteristics - Accurate and structured way of coding - Motivated, creative and energetic person - Fresh ideas, thinking along with the company - Communicative and a true collaborator
    Featured Skill API Development
    Vue.js
    Node.js
    MySQL Programming
    Laravel
    MySQL
    API
    PHP
    CSS 3
    JavaScript
    HTML5
  • $15 hourly
    Responsible, reliable software developer, focused on providing fast and efficient solutions, mainly using C # .NetCore, EntityFramework, Abp.IO, Mysql, Postgre, Sql Server, Angular, TypeScript
    Featured Skill API Development
    API
    Bootstrap
    Angular
    .NET Core
    SQL
    PostgreSQL
    .NET Framework
    MySQL
    Microsoft SQL Server
    C#
  • $25 hourly
    Senior Laravel developer | PHP | Laravel | MySQL | PostgreSQL | Bootstrap | AWS | API development | API integrations (Stripe, PayPal, Razorpay) | Git | Server configuration | Web architecture | Advanced database Design | HTML5 | CSS3 | JavaScript (ES6, jQuery) | Bootstrap 5 | Vue.js | Inertia | AWS (EC2, S3, RDS, ELB) | Cloud architecture | Docker | Tailwind CSS | CI/CD Pipelines | Server optimization | Nginx | Apache | Redis Caching | Redis Queuing | Performance Tuning | Agile & Scrum Methodologies As a Senior Laravel Developer with a deep understanding of the Laravel framework and over 9 years of experience, I build robust, scalable web applications. My expertise spans backend development, API integrations, complex bug fixes, and performance optimization, ensuring that every project I work on is secure, efficient, and built with clean, maintainable code. I am skilled in database management, API development, and web architecture design, consistently delivering high-quality solutions that meet client needs. A glance at my skills sets: ✅ PhpStorm, Sublime Text, VS Code, Docker for containerization and development environments ✅ PHP, Laravel, JavaScript, HTML5, CSS, Bootstrap 5, Tailwind CSS, SQL, front end frameworks like Vue.js. ✅ Eloquent ORM with advanced query building, query scopes, eager loading, lazy loading ✅ SQL query optimization for performance tuning (MySQL, PostgreSQL) Expertise in Redis, Memcached, and Laravel caching mechanisms for performance improvement, Laravel Queues and workers with Redis, advanced task scheduling and background processing for asynchronous operations ✅ Git, experience with CI/CD pipelines using Jenkins ✅ Composer for PHP package management, Integration of external libraries and custom package development ✅ Proficient in Laravel Octane, query profiling, database indexing, and route caching, experience with Horizon for job queue management and Redis optimization ✅ Knowledge of database migrations, schema design, and normalization, expertise in designing multi-tenant systems with database and schema segregation, AWS (S3, EC2, Lambda), Google Cloud, Twilio, proficient in integrating external APIs for services like maps, messaging, and email ✅ Expertise in building RESTful APIs, proficient in API authentication via Laravel Passport, Laravel Sanctum and JWT ✅ Expertise in securing applications with CSRF protection, SQL injection prevention, and XSS mitigation, hands-on experience with OAuth, SSO, and 2FA for user authentication ✅ Expertise in MVC, Service, Repository Pattern, Dependency Injection, experience with Domain-Driven Design (DDD) and event-driven architecture ✅ Proficient in PHPUnit, Laravel Dusk, and PestPHP for unit, feature, and browser testing, debugging with Xdebug and Laravel Telescope for deep insights into application behavior ✅ Stripe, PayPal, Razorpay, experience in secure payment handling and PCI compliance ✅ Expertise with Nginx, Apache, and server management ✅ Deployment experience using AWS, DigitalOcean. ✅ Extensive experience in performance monitoring and error handling using tools like NewRelic, Datadog, Sentry and Bugsnag" for real-time insights, logging, and troubleshooting.
    Featured Skill API Development
    Version Control
    Web Hosting
    Server
    Front-End Development
    Solution Architecture
    Database
    API
    Laravel
    Amazon Web Services
    PHP
  • $30 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.
    Featured Skill API Development
    ERP Software
    API
    UX & UI
    Tailwind CSS
    NestJS
    CSS
    AngularJS
    Ecommerce Website
    HTML
    PostgreSQL
    Angular
    Bootstrap
    Responsive Design
  • $50 hourly
    I am a Computer Science graduate with five years of experience in software development based on multinational and start-up companies. I am an expert WordPress plugin developer having five years of experience. I have developed 50+ free and premium WordPress plugins. I can give you a global vision of the project thanks to my extensive experience and offer you the best solution in terms of scope, cost, and time. Currently, I am highly motivated looking for new challenges as a professional freelance on this platform. - Orientation to objectives and results - Extensive know-how in business process analysis - Strong experience and verifiable successful results in software development - Projects Leadership I am an expert in developing applications with WordPress API. LearnDash, LifterLMS, BadgeOS, WooCommerce, EDD & Elementor plugins are my niche. Some of my professional technical skills are: Php, WordPress, WP Plugins, WP Themes, Laravel, Code ignitor, Sql Server, Azure, Git, TypeScript, MariaDB, JavaScript, JQuery, Bootstrap, Material Desing, Typescript, AJAX, HTML, XML, JSON, Visual Studio Code, Web API Core, WebForm, MySQL, ChatGPT, ChatBots, Automated Unit testing
    Featured Skill API Development
    Custom PHP
    WordPress Multisite
    AJAX
    Beaver Builder
    Plugin Development
    WPLMS
    WordPress Plugin
    WooCommerce
    API Integration
    API
    Elementor
    WordPress Theme
    LearnDash
  • $30 hourly
    I have been working in web development industry about 1 year. Since I started with Zend Framework version 2 back in 2019, I've had a chance to work with the following PHP frameworks: ✅ symfony (2.x; 3.x; 4.x; 5.0) ✅ Laravel (4.x; 5.x; 6.0) ✅ microframeworks like Slim, Lumen I'm using the following standards/recommendations/technologies in my daily work: ✅ SOLID principles ✅ PSR recommendations ✅ TDD/BDD - always trying to reach 100% coverage of my code ✅ RESTful, GraphQL APIs I'm used to working in agile environment, combining Kanban and SCRUM aspects in the development process.Recently I realised a good developer has to focus on the client's business goals and better communication skills. These skills are much harder to master than learning a new framework. As for the tech stack, here are some of the technologies I've mastered so far: ✅ AWS (EC2 with autoscaling, RDS, S3, SES, SQS, SNS, Route53, CloudFront, Lambda etc) ✅ PHP 5.x, 7.x ✅ RFC 2616, knowing HTTP protocol inside-out ✅ composer Here is the tools I'm using in my local setup: ✅ Ubuntu LTS ✅ PHPStorm ✅ git ✅ slаck and Skypе for communication ✅ docker, docker-compose I've been working on long term projects and would like to continue doing so. Let's have a skypе call discussing your project and me completing a free test task to show my skills!
    Featured Skill API Development
    CodeIgniter
    Laravel
    CakePHP
    HTML
    API
    JavaScript
    PHP
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  • $35 hourly
    Primary expertise includes: — Ruby on Rails development — Frontend: VueJs — jQuery/Javascript, CoffeeScript — HAML, CSS3 — Git — Search Libraries: Elastic Search, Sphinx — DB: Postgres, MYSQL, MongoDB — API development: RESTful APIs — Testing: RSpec & Capybara and have done TDD (Test Driven Development)/BDD (Behaviour Driven Development) on several projects. — Cloud hosting: Comfortable handling server setups & deployments and have experience working with dedicated servers, Amazon EC2, Heroku. — Methodology: Agile & Scrum/Kanban methodologies and great communication skills. I would love to help you build a state of the art web application just as much as I would enjoy working on existing or legacy projects (developing new features, updating technologies, or bringing best practices and testing into unstable or poorly structured code). If you have a project where you feel I can help out, please don't hesitate to get in touch!
    Featured Skill API Development
    API
    DigitalOcean
    Amazon ECS
    PostgreSQL Programming
    Docker
    RESTful API
    Git
    Ruby
    MongoDB
    MySQL
    Ruby on Rails
    Vue.js
    JavaScript
    GraphQL
    jQuery
  • $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).
    Featured Skill API Development
    Django
    SQL
    Flask
    Data Cleaning
    PHP
    JavaScript
    Vue.js
    Linux System Administration
    Elasticsearch
    IT Consultation
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    Python
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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.

 

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