18 Best API Developers For Hire In Missouri

Check out API Developers in Missouri with the skills you need for your next job.

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$100 hourly
Darin S.
- 4.9/5
- (212 jobs)
With over four decades of experience in the technology industry, I've honed my skills in overcoming obstacles and streamlining processes. My expertise spans various industries, from accounting and construction to manufacturing and marine transportation. As an adept Backend Developer, I have worked extensively with WordPress, WooCommerce, and Gravity Forms providing me with in-depth knowledge and skill to optimize your business processes and integrate your web presence with other systems. Are you ready to improve your web presence or streamline operations? Let's explore how I can help. Trust me, I've got you.

API Development
Email Marketing
PHP
WordPress
WooCommerce
Ebook
GlobiFlow
Business with 1-9 Employees
PSD to WordPress
Gravity Forms
Twilio API
Podio
$25 hourly
Sohail A.
- 5.0/5
- (27 jobs)
🏆 Top Rated |⭐5 Star Feedback |💯Job Success Rate I am a US-based creative and professional designer and developer. With over 14 years of experience, I specialize in creating visually stunning graphics and high-performing websites that truly resonates. 𝗦𝗘𝗥𝗩𝗜𝗖𝗘𝗦 𝗢𝗙𝗙𝗘𝗥𝗘𝗗: 𝗪𝗢𝗥𝗗𝗣𝗥𝗘𝗦𝗦 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧 ✅ Website staging development ✅ WordPress installation, setup/configuration ✅ Customizing WordPress themes and adding custom functionality. ✅ PSD to WordPress conversion ✅ Website design ✅ Website content management ✅ Plugin installation & configuration ✅ WordPress, theme & plugin update ✅ WordPress website speed optimization ✅ WordPress integrations ✅ Testing browser compatibility and monitoring bugs ✅ Deployment upon approval of the staging site ✅ Maintaining optimal performance and availability while overseeing all CMS technical aspects 𝗪𝗘𝗕𝗦𝗜𝗧𝗘 𝗠𝗜𝗚𝗥𝗔𝗧𝗜𝗢𝗡 / 𝗗𝗢𝗠𝗔𝗜𝗡 𝗠𝗜𝗚𝗥𝗔𝗧𝗜𝗢𝗡 ✅ Transfer site to WordPress ✅ WIX to WordPress ✅ Squarespace to WordPress ✅ Joomla to WordPress ✅ Magento to WooCommerce ✅ Shopify to WooCommerce ✅ Domain and Nameserver admin ✅ Domain transfers, new domain setup ✅ Website backup ✅ Website cloning 𝗪𝗼𝗿𝗱𝗣𝗿𝗲𝘀𝘀 𝗧𝗵𝗲𝗺𝗲𝘀 ✅ Astra, Divi, Hello, Genesis, Avada, Enfold, Valenti, Bridge, Salient, Thrive Themes 𝗪𝗼𝗿𝗱𝗣𝗿𝗲𝘀𝘀 𝗣𝗮𝗴𝗲 𝗕𝘂𝗶𝗹𝗱𝗲𝗿𝘀 ✅Elementor Pro, Beaver Builder, Divi, Thrive, VC - Visual Composer/WPBakery 𝗕𝗔𝗦𝗜𝗖 𝗦𝗘𝗢 ✅ Optimize website for SEO using Yoast SEO or All-in-One SEO ✅ Google Analytics, AdRoll, Conversion tracking, Tag manager ✅ Setup Google Search Console ✅ Google Tag Manager 𝗪𝗘𝗕𝗦𝗜𝗧𝗘 𝗦𝗘𝗖𝗨𝗥𝗜𝗧𝗬 ✅ Repair WordPress issues ✅ Lost credentials/passwords ✅ Hacked/Malware removal ✅ Backups/Restores ✅ Setup SSL Certificate ✅ Advance Security Setup Firewall 𝗣𝗼𝗽𝘂𝗹𝗮𝗿 𝗣𝗹𝘂𝗴𝗶𝗻𝘀 𝘁𝗵𝗮𝘁 𝗜 𝗵𝗮𝘃𝗲 𝘂𝘀𝗲𝗱 𝗼𝗻 𝗽𝗿𝗲𝘃𝗶𝗼𝘂𝘀 𝗮𝗻𝗱 𝗰𝘂𝗿𝗿𝗲𝗻𝘁 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 ✅ ACF - Advanced Custom Fields Pro, Slider Revolution, Woocommerce, Contact Form 7, MailChimp for WordPress, Gravity Form, and Others ✅ W3 Total Cache, LiteSpeed, WP Super Cache, WP Fastest Cache, WP Rocket ✅ Gravity Forms, Ninja Forms ✅ Yoast, RankMath, All in One SEO, AMP ✅ WooCommerce, Stripe ✅ WP Show Posts ✅ All-in-One WP Migration ✅ Mailchimp, WP Mail SMTP, ✅ Redirection, Advanced Custom Fields, ✅ Sucuri, Limit Login Attempts 𝗘𝗫𝗣𝗘𝗥𝗧𝗜𝗦𝗘 ✔ E-commerce Design & Development ✔ WordPress ✔ WooCommerce ✔ Shopify ✔ WIX ✔ HTML5 ✔ CSS3 ✔ JavaScript ✔ PHP & Laravel Proficiency ✔ MySQL Database ✔ Photoshop ✔ Illustrator ✔ Figma ✔ CorelDRAW Websites should be easy to use, safe, and most importantly, they should help company owners expand their enterprises. My entire work is focused on creating and/or managing websites that will maximize the expansion of my client's businesses. To ensure that your website looks amazing and functions incredibly well, Lets connect immediately for a solution that combines speed, security, and incredible design.

API Development
CSS
Figma
UX & UI
Website Optimization
UI/UX Prototyping
Landing Page Design
Web Page
HTML5
Elementor
Shopify
WooCommerce
WordPress Plugin
WordPress Theme
WordPress
$80 hourly
Kevin H.
- 4.5/5
- (12 jobs)
I am a web and software developer with over 10 years of experience working in multiple programming languages and frameworks. I specialize in responsive and reactive applications that are both functional and appeasing to the eye. I focus on futureproofing your app by planning for scalability both in size of the customer-base and infrastructure changes needed in the future.

API Development
Network Engineering
Web Application
Information Security
Network Security
Web Server
Web Design
Website Redesign
SQL
PHP
JavaScript
Python
Web Service
API
$60 hourly
Aiden E.
- 5.0/5
- (21 jobs)
I’m an experienced Cloud Engineer specializing in Google Cloud and backend Go development. My focus is on designing and implementing secure, scalable, cost-effective cloud architectures and solutions that fit your business and technical requirements. Maintaining my two Google Cloud certifications, Professional Cloud Architect and Professional Cloud Developer, and engaging in the broader developer community keeps me up to date on Google Cloud product announcements and best practices. My clients benefit from my experience handling the full application lifecycle, including day two operations such as Backup and Disaster Recovery. I am comfortable with the Google Cloud Operations Suite (Logging, Tracing, Metrics, Error Reporting) and handling observability of currently running applications. I strive to make meaningful, actionable insights easy to access and understand for my clients. When I write application code I use Go and typically develop horizontally scalable, stateless apps that are deployed to managed compute platforms meant for running containers, like Cloud Run and GKE. I have experience with a wide range of API technologies, including REST, GraphQL, gRPC, OAuth, JWTs, and modern bot/abuse protection. I implement efficient webhook handlers and API integrations so that you don't have to worry about data deduplication or mishandled events. Tech Stack: - Infrastructure: GCP, Firebase, GitHub, Terraform Cloud, MongoDB Atlas - Databases: MongoDB, Firestore, Cloud Spanner, BadgerDB (k/v), SQLite - Compute: Cloud Run, Cloud Run Functions, GKE - Networking: Cloud Load Balancing, Cloud Armor, Cloud DNS, Cloud CDN - Other GCP Services: Pub/Sub, Operations Suite - Application Lifecycle: Cloud Build, Cloud Deploy - Authentication: Auth0, Firebase Auth - Messaging: Twilio, Vonage - Payments: Stripe, Circle Other Specialty Areas: - Site Reliability Engineering (SRE) - Cloud Native Applications - Event Driven Architecture - Webhook Integration - SaaS and Multi-Tenant Applications - Application Lifecycle and CI/CD - API Development (REST + gRPC) I take on projects of all sizes, at many different levels of involvement. I look forward to working with you!

API Development
Back-End Development
SaaS Development
Cloud Implementation
Kubernetes
Terraform
CI/CD
DevOps
Solution Architecture
Google Cloud Platform Administration
Cloud Development
Cloud Engineering
Cloud Architecture
Google Cloud Platform
Golang
$130 hourly
Joe K.
- 4.7/5
- (132 jobs)
Full stack web developer, integrity is one of my core values. If you are looking for someone you can trust who has been building custom web solutions successfully for a long time, look no further. From one of my favorite reviews I've received here on Upwork - "I've never met such a skilled developer. I mean, we are talking world-class ladies and gentlemen! You are not going to discover a better developer anywhere else." -- I build custom web apps and am especially strong in custom online payment systems and API integrations. Some recent examples; - Built a sales management system for an auto insurance dealer ( so his sales people could login, enter a sale, and commissions could also be tracked ). - Built a social network type app with courses and badges, a bit like linked in but focused on fast moving and fast shifting careers. - Built a platform for folks to promote their favorite business' and earn commissions. - Built a custom web application billing system for a contractor / sub - contractor service provider company that has dashboards for clients and vendors with billing and split payments so contractor earns platform fee. That's just a few of the recent builds ( 2023 ). I mention them here to give you some idea of what I do. On a technical note, I build with the TALL stack ( Tailwind, Alpine, Livewire, Laravel ) -- - "Joseph was kind, responsive, quick, direct, and receptive to feedback. If you have worked with other developers, you know how rare this is, and how important it is to find someone who truly cares about the quality of work they provide. He couldn't have been better to work with." "Joe is incredibly talented and an absolute pleasure to work with. He is our go-to guy for a variety of challenges and we have full confidence" "I really enjoyed working with Joseph. He was honest and direct with his communication. He didn't try to oversell his services. It was all about just getting the job done, doing it well, and communicating with me about what was going on throughout the whole process." - --- Ultimately, good web dev service consists of not only coding, but also translating your needs into solutions, communicating effectively, training you how to use the software, and giving you confidence along the way. I'm here for my clients to find their way through web dev projects. If there is anything I can't do, I'm happy to handle bringing in help on that specialty. I will be honest with you. My skills include but are not limited to; - Web App development - Laravel development - WordPress plugin development - Stripe integrations - Payment gateways - E-commerce - API integrations I'm able to help with system design and database design, user experience, and optimization. I offer functionality consulting and can help prepare detailed requirements documents for larger projects. I do my best to provide ideas to solutions - when there is no clear path, a bit of research and some creativity can go a long way. Contact me to discuss your needs!

API Development
OAuth
API
Plugin Development
Payment Gateway Integration
Web Development
API Integration
Laravel
WordPress
WordPress Plugin
PHP
jQuery
Stripe
Custom PHP
$135 hourly
Derek G.
- 5.0/5
- (7 jobs)
I build front and back end solutions to YOUR business's problems. I value transparent communication and collaboration and will work with you continuously to ensure satisfaction. My clients find I am very easy to work with, am often available to discuss things, am forward thinking, and inventive to handle business problems. Services include hosting, servers, websites, databases, APIs, web scraping, reporting, analytics, landing pages, accessibility, and more! I look forward to working with you! Platforms: Web, Android, & iOS Languages: Typescript, JavaScript, Golang, Dart, Ruby Frameworks: React, Angular, React Native, Flutter, Rails, Node Database: PostgreSQL, MySQL, MongoDB, Firebase

API Development
Flutter
PostgreSQL
HTML
MySQL
Golang
Ruby on Rails
Node.js
MongoDB
JavaScript
CSS
React
Dart
PHP
$25 hourly
Abdur R.
- 5.0/5
- (6 jobs)
Over the last 6 years I have developed a wide range of websites from simple HTML websites to Full dynamic websites and web applications from frontend to fully backend website/application. My main skills and expertise includes PHP with Laravel, Codeigniter, Wordpress, Joomla, Javascript, jQuery, ReactJS, MySQL, HTML, CSS and Bootstrap. I have a good knowledge of Servers including shared hosting, dedicated servers and AWS. What I love most is to help small businesses and get them up and running. My other side of skills includes SEO and Social Media Marketing through which I can give a touches to the website/application during the development to make sure its SEO friendly. I love doing all aspects of building websites from front-end to backend. I have very good skills in website designing which meets industry best practices and fully responsive on all devices.

API Development
CSS
HTML
Laravel
Bootstrap
CodeIgniter
React
Shopify
Web Development
Web Design
WooCommerce
PHP
JavaScript
MySQL Programming
WordPress
$15 hourly
Charity E.
- 4.7/5
- (6 jobs)
What I Offer: AI Automations: Custom Automation Solutions: Leveraging cutting edge tools to build bespoke automation systems that save you time and reduce costs. Workflow Optimization: Identifying bottlenecks and implementing automated workflows to improve productivity. Data Integration: Seamlessly connecting various platforms and applications to ensure smooth data flow and operations. Social Media Content Creation: Content Strategy: Developing and automating strategic content plans that align with your brand’s voice and goals. Engaging Posts: Crafting visually appealing and engaging posts to boost your social media presence. Analytics and Optimization: Using data-driven insights to refine and optimize content for maximum reach and engagement. Why Choose Me? Expertise: With extensive experience in AI automation and social media content creation, I bring a unique blend of technical and creative skills. Efficiency: My solutions are designed to streamline your operations and maximize your return on investment. Adaptability: Whether you need a quick fix or a comprehensive solution, I tailor my services to meet your specific needs. Commitment: I am dedicated to delivering high-quality work on time, ensuring your satisfaction and success. Let’s Connect! Ready to take your business to the next level with AI automation and standout social media content? Contact me today, and let's discuss how I can help you achieve your goals. Skills: AI Automations No-Code Tools Workflow Optimization Data Integration Social Media Strategy Content Creation Visual Design Analytics and Optimization

API Development
Data Scraping
AI Content Creation
Content Creation
Social Media Content Creation
Automation
ChatGPT
API
Data Visualization
Data Analytics & Visualization Software
Data Analytics
Data Analysis
Generative AI Prompt Engineering
Prompt Engineering
$30 hourly
Jean-Marcel G.
- 5.0/5
- (2 jobs)
Hello! I'm a full-stack developer who thrives on creating engaging web applications. With expertise in JavaScript, Python, React.js, and hands-on experience in developing API endpoints using Node.js and Python, I have the skills to bring your vision to life. Whether it's crafting a captivating online portfolio, creating a unique e-commerce site, or designing an innovative web application, there's no limit to what we can achieve together. I'm ready to bring your vision to life, let's create something amazing! • Skilled in JavaScript, Python, HTML5/CSS3, ReactJS, NodeJS, MongoDB, and SQL.

API Development
User Authentication
Front-End Development
Technical Documentation Management
MongoDB
JavaScript
SQL
HTML5
Node.js
React
Python
CSS
Bootstrap
Adobe Photoshop
$75 hourly
David H.
- 0.0/5
- (0 jobs)
I'm a full stack developer experienced in building iOS/Android mobile apps, web sites, windows apps, server side apps. Outside of iOS/Android, my experience has mostly been focused around Microsoft ecosystem: SQL Server, C#, Asp.net, but have had some experience in others: MySQL, C++

API Development
Windows App Development
Android App Development
iOS Development
Objective-C
Database Design
SQL Programming
Web Development
.NET Framework
Visual Basic
C++
Java
HTML
JavaScript
C#
$75 hourly
Khoa L.
- 0.0/5
- (0 jobs)
I'm a developer experience in building websites and stand-up API applications. In my current role at Caire Health Inc., I've led pivotal projects such as developing dynamic UI components and implementing an asynchronous messaging system, significantly enhancing operational efficiency and patient-care communication. My tenure at Thirty Madison Inc. saw me spearheading the development of key features and supporting a highly scalable architecture, servicing over 300,000 patients. At Cerner Corporation, my contributions ranged from enhancing patient-encounter registration systems to implementing efficient database management solutions. My toolkit is extensive, including proficiency in Java, Python, Ruby on Rails, Rust, and more, complemented by deep knowledge in cloud computing, distributed systems, and microservices architecture. I thrive on the challenges of cloud platforms like AWS, database management, and optimizing software delivery with CI/CD pipelines. Eager to learn and quick to adapt, I’m not just looking for the next job—I'm on the lookout for the next challenge, the next problem that requires an elegant solution. My goal is to bring my depth of experience and adaptability to your projects, ensuring that together, we not only meet but exceed our technological aspirations.

API Development
Database
Software
Product Development
Software Development
$75 hourly
Steven F.
- 0.0/5
- (1 job)
PROFILE A Senior Full-Stack Developer and Cybersecurity Specialist with over 17 years of professional experience delivering scalable, secure, and innovative solutions for businesses of all sizes. My expertise spans web development, cybersecurity, cloud infrastructure, and game development, ensuring that your project is completed with precision, efficiency, and security. What I Offer: Full-Stack Web Development: From responsive front-end designs to robust back-end systems, I create custom web applications using modern technologies like React, Angular, Node.js, .NET Core, and more. Cybersecurity Expertise: Certified in CompTIA Security+ and ISACA CSX Fundamentals, I prioritize secure coding practices, vulnerability assessments, and data protection. Game Development: With experience in Unreal Engine 5 and C++, I bring immersive and engaging game ideas to life, from concept to implementation. Cloud Infrastructure Management: Proficient in Azure infrastructure setup, scaling, and optimization to ensure your solutions grow with your business. Why Work With Me? Proven Expertise: Over a decade of experience delivering high-performing websites, applications, and game prototypes. Client-Focused Approach: I believe in transparent communication and collaboration to bring your vision to life. Secure Solutions: Your data and application security are my top priorities. Quick Adaptation: I stay up-to-date with modern technologies and can quickly learn new tools to suit your project needs. Let’s collaborate to create something exceptional! Whether you’re looking to build a secure web application, enhance an existing system, or develop a cutting-edge game, I’m here to deliver results that exceed expectations. Contact me today to discuss your project and let’s get started!

API Development
Unreal Engine
Microsoft Azure
Penetration Testing
PostgreSQL
SQL
JavaScript
Blazor
ASP.NET
Bootstrap
CSS
HTML5
C#
Game Design
Web Development
$50 hourly
Nimishha P.
- 0.0/5
- (0 jobs)
I'm a developer specializing in building modern, high-performance websites for businesses of all sizes. Whether you need a sleek landing page, a full-scale e-commerce store, or a custom web application, I can bring your vision to life with clean, efficient code and a user-friendly design. Tech Stack: * Frontend: HTML, CSS (Tailwind, Bootstrap), JavaScript (React, Vue.js) * Backend: Node.js (Express), Python (Django/Flask), PHP (Laravel) * Databases: MySQL, PostgreSQL, MongoDB * CMS: WordPress, Shopify, Webflow * API Development & Integration (REST, GraphQL, Stripe, Firebase, etc.) * Version Control: Git (GitHub, GitLab, Bitbucket) What I Offer: * Customer-built, fully responsive, and SEO-optimized websites * Performance & security enhancements * Full project lifecycle from planning to deployment * Ongoing support and maintenance I believe in clear communication and meeting deadlines while delivering high-quality work. Let's discuss how I can help with your next project!

API Development
PHP
JavaScript
HTML
API Integration
CMS Framework
Database Management
Front-End Development
Back-End Development
Performance Optimization
Software Design
Web Development
Desktop Application
Software Development
Web Application
$55 hourly
Rommel V.
- 0.0/5
- (0 jobs)
Software Engineer and instructor with over 25 years of experience in software development. Proven track record in building and deploying sophisticated web and mobile applications utilizing the latest technologies in the cloud. Expert in modern web architecture, with extensive knowledge in Database, Machine Learning and API design.

API Development
Database Management
Database
HTML
Mobile App Development
Cloud Application
JavaScript
Tutoring
Machine Learning
React Native
React
Web Development
$30 hourly
Danny M.
- 0.0/5
- (0 jobs)
I have lots of experience with .NET Framework/Core REST APIs and microservices. My web application expertise is in Angular. I've used Azure DevOps extensively for managing pipelines and am comfortable using several flavors of git (Github, Gitlab, etc.).

API Development
.NET Core
Grafana
Angular
Prometheus
GitHub
GitLab
SQL
.NET Framework
Git
C#
Azure DevOps
RESTful API
$23 hourly
Aruna T.
- 0.0/5
- (0 jobs)
With 5 years of experience in application development, I am a seasoned professional with a proven track record of delivering high quality solutions. I have a strong technical background in .NET MVC, .NET Core, React, Next.js and Microsoft SQL and have been involved in the entire software development lifecycle, from requirement gathering to deployment. I have a passion for staying up to date with the latest technologies and take pride in being a continuous learner. I thrive in a fast-paced, collaborative work environment and am committed to delivering exceptional results.

API Development
Agile Software Development
C#
Web Development
Next.js
SQL
Bootstrap
jQuery
JavaScript
CSS
HTML
React
WordPress
ASP.NET MVC
ASP.NET Core
$40 hourly
Dorian M.
- 0.0/5
- (0 jobs)
Business intelligence analyst with technical expertise in Power BI, Python and SQL. I help people understand and draw insights from the data they produce to make better informed decisions.

API Development
OpenAI API
TensorFlow
RESTful API
Ecommerce Website Development
Ruby on Rails
Python
SQL
Microsoft Power BI
$30 hourly
Savya B.
- 0.0/5
- (0 jobs)
👋 Hey, I’m Savya Bhattarai! I’m a full-stack developer with a passion for building functional and user-friendly applications. With expertise in C#, .NET, JavaScript, React, Node.js, and SQL, I enjoy tackling complex problems and bringing ideas to life through clean, efficient code. Over the years, I’ve worked on projects ranging from web apps and database management to dynamic UI development. Whether it’s optimizing backend performance or designing intuitive front-end experiences, I love creating software that makes an impact. Beyond coding, I stay up-to-date with industry trends, continuously improving my skills to keep up with the ever-evolving tech world. When I’m not deep in development, you can probably find me cooking, hitting the gym, or exploring new technologies. Let’s build something awesome together! 🚀

API Development
GitHub
Full-Stack Development
Database Design
REST API
React
ASP.NET MVC
Node.js
Blazor
.NET Framework
JavaScript
C#
Docker
MongoDB
SQL
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