Hire the best API Developers in Seattle, WA

Check out API Developers in Seattle, WA with the skills you need for your next job.
  • $85 hourly
    Hi! I'm a professional full stack software engineer with ample experience in various tech companies. During my tenure in tech, I have-- Helped ultra small companies get products off the ground Worked with start-ups to scale products with demand Been an engineer in the world's largest cloud service provider--AWS. Web applications are my speciality. While working at Amazon, I helped create a brand new product which launched with the ability to scale to millions of users. I use TypeScript every day to create cloud based software, both user interfaces and scalable infrastructure. I'm comfortable across the stack, but especially enjoy building a user experience focused frontend. That being said, not every project needs to be gargantuan. I also have a passion for automation and efficiency and I love helping small businesses grow into custom software solutions. If you're just getting started and need some technical expertise, or if your business has outgrown the off-the-shelf tools that have gotten you this far, let's chat!
    Featured Skill API Development
    Sequelize
    Serverless Computing
    PostgreSQL Programming
    Web Application
    GraphQL
    Amazon Web Services
    TypeScript
    Git
    CSS 3
    React
    Node.js
    JavaScript
    HTML5
  • $35 hourly
    Hello! I am a web developer leveraging a background in music production to exercise critical thinking, creativity and anticipation of user needs. My knowledge and experience in web development ensures both a smooth user experience and clean, concise code. Working on projects asynchronously with diverse teams has strengthened my skills in communication and collaboration. Using these strengths, I strive to build accessible, intuitive, and responsive web apps for a far-reaching audience.
    Featured Skill API Development
    RESTful API
    GitHub
    NoSQL Database
    Web Development
    HTML5
    CSS
    Node.js
    JavaScript
    Responsive Design
    MySQL
    MongoDB
    React
    Bootstrap
    jQuery
  • $45 hourly
    Featured Skill API Development
    JavaScript
    FastAPI
    Flask
    pytest
    Docker
    Ansible
    MongoDB
    PostgreSQL
    Django
    Python
  • $80 hourly
    I have 20+ years of overall 🌐 Web Development experience, including 16+ years with ⚙️ Custom PHP, 14+ years with 📝 WordPress and 🛠️ API Integration, and 10+ years with 🛍️ eCommerce, along with other related technologies. Located in Washington State, I have no problem working 30-40+ hours during American time. I am self-controlled, self-organized, flexible and learnable, I can adapt to whatever your project requires. I have completed over 200 projects, ranging from simple one-page websites to complex custom solutions requiring API integration and large volume data processing. ================================ 🛠️ API INTEGRATION I offer custom API integration for a wide range of services using the most common REST, SOAP and GraphQL protocols. There is a strong focus on authentication, error handling and personal data security. I have extensive experience working with 1,200,000+ records at a time with regular automatic updates down to the minute. 🛠️ API integration development 🛠️ Data transformation and processing 🛠️ Analytics, reporting and visualization 🛠️ Custom API/feeds development Some API integrations I have experience with: Amazon PA API, Amazon S3 API, BigCommerce API, BlueBanc API, Bright Data API, ChatGPT API, Detroit Trading API, Dukascopy API, Dynadot API, eBay Product API, Envato API, First Data API, Fiserv API, GoDaddy API, Google Places API, Lead Prosper API, MaxMind API, Meta Marketing API, Modern Dropship API, NameSilo API, OpenAI API, PayPal API, Plaid API, Seamless Chex API, SendGrid API, Shopify API, Square API, Stripe API, Thumbtack API, Trulia API, Twilio API, VideoHive API, WhatsApp Cloud API, WooCommerce API, WordPress API, Zillow API, etc... ================================ 🧠 DATA PROCESSING I offer ETL (Extract, Transform, Load) data processing services that include cleaning, transforming, and analyzing data to extract valuable insights. This can involve working with external APIs, large datasets, cloud or database storage. I have extensive experience with tools like PHP, databases and cloud services for efficient processing. 🧠 Data cleaning and transformation 🧠 Real-time data analysis and reporting 🧠 Data files creating and processing 🧠 Artificial intelligence enhancing ================================ ⚙️ MICROSERVICES I offer development of microservices for external project management or communication between different projects. This includes receiving data via API, converting it to the required format, storing it in a database or sending it via API to another service. I have experience working with Amazon, Google, Meta as well as smaller private services. ⚙️ Inbound and outbound API integration ⚙️ Converting one type of API to another type ⚙️ Splitting large queries into multiple queries ⚙️ Automatic processing of requests on schedule ================================ 🛍️ ECOMMERCE I offer product import/export and inventory management for eCommerce stores. This includes working with popular WordPress, Shopify, WooCommerce and BigCommerce as well as external marketplaces such as Amazon, eBay, Google Shopping, etc. I have extensive experience working with 100,000+ inventory processing and synchronization. 🛍️ Inventory management solutions 🛍️ Sales and performance analytics 🛍️ Fraud detection and prevention 🛍️ Marketplaces synchronization ================================ One last thing... there's a reason I have a 100% success score on Upwork. That's because I get it right the first time, or I will work for free until you're happy. Thank you for taking the time to review my profile. Looking forward to connecting with you!
    Featured Skill API Development
    Inventory Management
    BigCommerce
    WooCommerce
    Shopify
    WordPress
    Data Processing
    Data Cleaning
    ETL
    GraphQL
    SOAP API
    JSON API
    REST API
    API Integration
    Custom PHP
  • $60 hourly
    🚀 AI & Machine Learning Expert | Driving Scalable ML Solutions for Business Impact 💡 Need a machine learning engineer who not only builds models but delivers real business results? I specialize in AI, deep learning, and MLOps, crafting scalable solutions that drive efficiency and innovation. With a track record of leading high-impact ML projects, I’ve worked directly with executive leadership and key stakeholders to deploy AI-driven products that make a difference. Whether it’s developing computer vision models that reduce errors by 90%, building forecasting systems, or streamlining ML pipelines, I bring both technical expertise and strategic insight to the table. 🔹 AI & ML Solutions – From concept to production, I develop robust models tailored to business needs. 🔹 MLOps & Scalability – Ensuring models are monitored, maintained, and seamlessly integrated. 🔹 Executive Collaboration – Bridging the gap between data science and business strategy. 🔹 Full-Stack AI Deployment – Cloud-based solutions using AWS, GCP, Azure, and Snowflake. 🔹 Technologies I Use 👨‍💻 Programming & Frameworks - Languages: Python, SQL - Deep Learning: TensorFlow, PyTorch - ML Libraries: Scikit-learn, XGBoost, LightGBM - Web APIs & Deployment: FastAPI, Flask 📊 Data Engineering & MLOps - Cloud Platforms: AWS, GCP, Azure - Data Warehousing: Snowflake, BigQuery, Redshift - Pipeline Orchestration: Apache Airflow, Prefect - Version Control & CI/CD: Git, Docker, DVC 🛠️ AI/ML Infrastructure - Feature Stores & Data Tools: Feature Store, dbt, Airbyte - Monitoring & Model Lifecycle: MLflow, Kubeflow, Weights & Biases - Containerization & Deployment: Kubernetes, Docker 🔹 Services I Offer ✅ Comprehensive End-to-End Model Development – From data collection to model deployment. ✅ AI Product Planning, Strategy, and Management – Helping businesses define and execute AI initiatives. ✅ MLOps & Model Deployment – Automating ML pipelines, monitoring, and versioning. ✅ Evaluation and Recommendations for ML Tools – Helping teams choose the best ML stack. ✅ Database Setup & Reporting – Designing efficient databases for AI applications. ✅ Expertise in Data Collection & Organization – Structuring high-quality datasets for machine learning. ✅ AI & Machine Learning Auditing – Evaluating existing AI/ML models for performance and bias. ✅ Investor Advising for AI Startups – Providing technical guidance to investors evaluating AI ventures. ✅ Forecasting & Predictive Analytics – Time-series forecasting and demand prediction. ✅ AI Strategy & Consulting – Helping businesses integrate AI into their workflows. ✅ AI Cloud Solutions – Deploying AI models on AWS, GCP, or Azure. ✅ Technical Leadership & Advisory – Guiding teams on best practices in AI/ML development. 💼 Let’s turn your data into actionable insights! Contact me to discuss how AI can drive your business forward.
    Featured Skill API Development
    Data Engineering
    PyTorch
    Snowflake
    AWS Lambda
    Amazon Web Services
    Quantitative Analysis
    Data Scraping
    Machine Learning
    Data Science Consultation
    Deep Learning
    TensorFlow
    Computer Vision
    Python
  • $70 hourly
    Are you in search of a skilled and imaginative freelance web application developer who can turn your digital dreams into reality? Look no further! I specialize in designing and building custom web applications that are not only visually stunning but also highly functional, using a powerful trio of tools: Webflow, Xano, and Wized. With a passion for creating seamless online experiences, I bring a unique blend of creativity and technical expertise to every project. My proficiency in Webflow allows me to craft captivating and responsive designs that adapt flawlessly to various devices and screen sizes. From eye-catching landing pages to complex interactive interfaces, I ensure that your web application engages users and keeps them coming back for more. But the magic doesn't stop there. Leveraging the capabilities of Xano, I seamlessly integrate dynamic backend functionalities that drive your web application's performance and responsiveness. Whether it's managing databases, handling user authentication, or facilitating real-time data updates, I ensure that your web application operates smoothly and securely, providing an exceptional user experience. And let's talk about Wized – a powerhouse for automating workflows and streamlining processes. By harnessing the power of Wized, I optimize the efficiency of your web application, making it not only visually appealing and functional but also incredibly user-friendly. From intuitive navigation to intelligent form submissions, I make sure that your web application is a joy to use, both for your users and your team. What sets me apart? It's not just my technical proficiency, but my commitment to understanding your unique vision and translating it into a digital masterpiece. I collaborate closely with you throughout the development process, ensuring that your input is valued and incorporated at every stage. I take pride in delivering results that exceed expectations, on time and within budget. Whether you're a startup looking to establish a strong online presence or an established business aiming to enhance customer engagement, my expertise in Webflow, Xano, and Wized can elevate your web application to new heights. Let's embark on a journey together to create a web application that resonates with your audience and leaves a lasting impression. Contact me today to discuss your project, and let's transform your ideas into a dynamic and captivating web application that stands out in the digital landscape. Your vision, my expertise – a winning combination for success.
    Featured Skill API Development
    SaaS Development
    UX & UI
    Automation
    Back-End Development
    Front-End Development
    User Experience
    User Authentication
    Database Management
    Interactive Design
    User Interface Design
    Responsive Design
    Webflow
    JavaScript
    API Integration
  • $60 hourly
    20+ years of SAP technical experience. Professional and customer focused, dedicated to deliver high standard well-engineered adaptable solutions using latest SAP technologies reducing TCO costs. Extensive background in performance profiling and program tuning directly reducing operation costs. Very proficient in trouble-shooting and analysis of production issues. Good functional knowledge of the various integration points between the SAP modules within the order-to-cash and procure-to-pay business processes. Experience in industries ranging from public sector, medical device manufacturing to retail.
    Featured Skill API Development
    SAP Programming
    Integration Testing
    JSON
    SAP Implementation
    RESTful API
    Tech & IT
    SAP ERP
    Object-Oriented Programming
    ABAP
  • $63 hourly
    I'm a full-stack software engineer based in Seattle with over 2 years of experience in the software industry. Most recently, I've built software in React/Node.js/Typescript for a real estate tech startup, helping to quadruple its valuation.
    Featured Skill API Development
    Web Application
    Web Development
    Web UI
    Node.js
    React
    React Native
    TypeScript
  • $30 hourly
    Before taking time off to raise a family, I spent 10+ years developing device drivers for MS Windows Operating Systems. I have retrained as a Web Developer. Most of my experience is as a backend web developer, but I am also happy to work on full-stack projects. As a software engineer and a mom, I have developed many skills, including tutoring, editing, copywriting, and project management. I'm also a great problem solver. I look forward to discussing your project with you!
    Featured Skill API Development
    Back-End Development
    Operating Systems Development
    C
    SQL
    C++
    Python
    Golang
  • $150 hourly
    Caleb is a software engineer at Microsoft with a strong background in backend architecture, performance optimization, and multi-language systems. Gabriel is a full-stack developer with startup and e-commerce experience, focused on building performant, user-friendly products. What we build best - MVPs delivered in 4–6 weeks - Custom dashboards, internal tools, CRMs, schedulers, and admin panels - Web applications using React, TypeScript, PostgreSQL, and modern best practices We value clear communication, async collaboration, and fast iteration. Whether you’re validating an idea or scaling an existing tool, we’re here to help you build with confidence.
    Featured Skill API Development
    Software Maintenance
    Software Integration
    Software Architecture & Design
    AI App Development
    Web Application
    App Development
    Analytics Dashboard
    Software
    SaaS Development
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