Hire the best API Developers in Los Angeles, CA

Check out API Developers in Los Angeles, CA with the skills you need for your next job.
  • $150 hourly
    I am a professional cloud architect, data engineer, and software developer with 18 years of solid work experience. I deliver solutions using a variety of technologies, selected based on the best fit for the task. I have experience aiding startups, offering consulting services to small and medium-sized businesses, as well as experience working on large enterprise initiatives. I am an Amazon Web Services (AWS) Certified Solutions Architect. I have expertise in data engineering and data warehouse architecture as well. I am well versed in cloud-native ETL schemes/scenarios from various source systems (SQL, NoSQL, files, streams, and web scraping). I use Infrastructure as Code tools (IaC) and am well versed in writing continuous integration/delivery (CICD) processes. Equally important are my communication skills and ability to interface with business executives, end users, and technical personnel. I strive to deliver elegant, performant solutions that provide value to my stakeholders in a "sane," supportable way. I have bachelor's degrees in Information Systems and Economics as well as a Master of Science degree in Information Management. I recently helped a client architect, develop, and grow a cloud-based advertising attribution system into a multi-million $ profit center for their company. The engagement lasted two years, in which I designed the platform from inception, conceived/deployed new capabilities, led client onboardings, and a team to run the product. The project started from loosely defined requirements, and I transformed it into a critical component of my client's business.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Data Management
    Business Intelligence
    Amazon Redshift
    Amazon Web Services
    MongoDB
    Data Warehousing
    ETL
    Node.js
    Docker
    Apache Spark
    AWS Glue
    Apache Airflow
    SQL
    Python
  • $70 hourly
    I have over 15 years of experience in Software Development (Salesforce, NetSuite, HubSpot, Shopify) Web Design (Websites, WordPress), Integrations (APIs, Salesforce, Zoominfo, HubSpot, Shopify, Payment Processing and more) and PHP, Python, Angular, React. My FOCUS is solely on the client's needs. I work hand-in-hand with my clients and walk through every step of the process to deliver exactly what the client needs I do what the client requests and go beyond their expectations; this entails • Clearly understanding the client's business • Clearly understanding the client's need and request • Design exactly what the client's request using Wireframes, Specifications, etc. • Keep client constantly informed of the progress of the project by using tools to monitor the work; Jira, Trello Boards, Slack, etc. Experience: • Software Development o Salesforce; Lightning, Apex, Triggers, Declarative (Flows, Reports, Dashboards), Community Portals and more o NetSuite; SuiteScript, Integrations, Workflows, Reports o Websites; WordPress, Django, Heroku o PHP, Python, JavaScript, Angular, React • Integrations o Salesforce Integrations; Websites, Forms, Zoominfo, HubSpot, Shopify o Payment Processing Integrations ; Stripe, Authorie.net, QuickBooks PayPal and more o Created many custom REST API • Platforms o Salesforce; Sales Cloud, Sales Engagement, CPQ, Salesforce for Nonprofit (NPSP), Pardot, Marketing cloud o NetSuite o AWS EC2 o WordPress o Heroku • Database (SQL Server, MySQL) o SQL Server o MySQL o Mongo • Architecture o Extensive knowledge of Salesforce, NetSuite, websites o Ecommerce/Shopping Carts • Magento • Wordpress/WooCommerce • Shopify Sample Projects • Built a new Salesforce Instance ("Quick Start Implementation"); the requirement called for converting the client's management case website to Salesforce. This project consisted of creating Lightning components to match client's case management system and automatically create Leads based on business rules • Implement API integrations for client's website so Leads are created in Salesforce automatically. In addition, based on fields entered on the website by prospect, Leads assigned to designated sales teams • Ecommerce; worked with most Payment Processing Gateways (Authorize.net, Stripe, PayPal, etc.) • Create Reports and Dashboards for eCommerce and Wealth Management companies for analytical and research. • Integrated Salesforce Computer Telephony Integration (CTI) with client's phone system; in addition integrating phone system with Salesforce, the application also auto populates data based on incoming number and "click-to-call" functionality • Create integration between QuickBooks and Salesforce so users can see the status of pending and paid invoices within Salesforce. • Ecommerce Salesforce Integration: Integrated an Ecommerce solution for a Leading National Warranty Company which the site now provides ability to purchase contracts from the company's website utilizing custom Salesforce REST services The following are steps I take with my clients which has proven time and time again the finished products meets the client's goals: Step 1 - Design: Understand exactly what the client needs. This involves collaborating closely with the client and then provide client written design specifications Step 2 - Implement: Implement exactly what the client requested Step 3 - Test: Thoroughly test all components of the request and we don't finish testing until client approves the work Step 4 - Deliver!
    vsuc_fltilesrefresh_TrophyIcon API Development
    Pardot Development
    Shopify
    SuiteScript
    NetSuite Development
    Payment Processing
    Salesforce Lightning
    PHP
    Ecommerce Website Development
    Apex
    Web Development
    Salesforce App Development
    HubSpot
    Web Design
    Salesforce CRM
  • $55 hourly
    Experienced full-stack software developer Language and Frameworks: Java, Spring Boot, Groovy and Grails, PHP, Python, Javascript, Solidity Jquery, React.js, Node.js, Express.js, HTML5, CSS3 Skills: Data analysis using R Restful API Development MySQL, Postgres, Elasticsearch Web Scraping, Python scripting, Bot Development NFT, Smart Contract Development, Web3.js integration
    vsuc_fltilesrefresh_TrophyIcon API Development
    MySQL Programming
    RESTful Architecture
    Grails
    Spring Boot
    JavaScript
    PHP
    HTML5
    React
    Node.js
    jQuery
    Python
  • $60 hourly
    Full stack developer with experience building world class mobile, web and desktop apps. Will consult, architect, design, program, and deliver on your project requirements from start to finish. With 15+ years as a Senior Software Architect and Developer, I can deliver the most efficient solution to your business needs in a cost efficient and timely manner. In addition to delivery world class apps, I am also a specialist in building and releasing apps. I have designed and built world leading tools to automate the build and release processes for mobile apps. I have contributed these tools to the Flutter community for free in order to advance the Flutter platform. FYI: you can explore these tools on GitHub or see them in my portfolio. I communicate well and am available for conversation about your project and how it is progressing. I am currently available and can start immediately. Additional: A sample of my skillset includes: Languages ➤ Java, Javascript, SQL, Scala, Dart (and many others) Frameworks ➤ Flutter, Spring, Hibernate, J2EE (EJB3, JTA, JMS, JPA), gRPC Cloud ➤ AWS, Google Cloud, Micro Services, Kubernetes, Docker, Ansible, DevOps. Methodology/Practices ➤ SOA, SOAD, OOAD, UML, OOP, AOP, EAI, MVC, MVVM, Agile, Scrum, Algorithms, Machine Learning, Big Data, Reactive Programming, Functional Programming, Enterprise Integration Patterns, GoF Design Patterns, Data Modeling, CI/CD. GUI/WEB ➤ HTML5, CSS, jQuery, Tapestry, Spring MVC, Angular Databases ➤ Firebase, Oracle, mySQL, Postgres, NoSQL, MongoDB
    vsuc_fltilesrefresh_TrophyIcon API Development
    Kotlin
    JavaScript
    iOS
    Android
    CI/CD
    User Identity Management
    Apache Kafka
    NoSQL Database
    Spring Framework
    Flutter
    Software Architecture & Design
    SQL
    Java
    Apache Spark
  • $65 hourly
    I am a software engineer who focuses on building applications that sharpen tool and platform architecture, improve operational scope and influence, and enhance infrastructure with scalability. I have extensive knowledge in full-stack development and advanced lifecycle methodologies. Languages: Ruby, JavaScript, Python, Shell/Bash, SQL, C++/C#, Java Frameworks/Libraries: Rails, Redis, GraphQL, React, Google API, Slack API, Redux Cloud Technologies: Google Cloud Platform (GCP), Amazon Web Services (AWS) CI/CD Tooling: GitHub, Jenkins, Spinnaker, Artifactory, Terraform Containerization: Docker, Kubernetes, Amazon ECS Config/Pkg Mgmt.: Helm, Puppet Build Tools: Node/NPM, Yarn, Homebrew, Gem Monitoring & Logging: Grafana, DataDog, NewRelic, CloudWatch Databases: Redis, Amazon Aurora, RDS, DynamoDB, ElastiCache Product Integrations: ServiceNow, Jira, Rundeck, Okta, PagerDuty, Vault, Solarwinds
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    Homebrew
    Terraform
    Google APIs
    Rundeck
    Slack
    YARN
    Python
    GraphQL
    Docker
    React
    Kubernetes
    Redis
    Ruby on Rails
    Amazon Web Services
  • $55 hourly
    Greetings! I'm Paul Luna, a highly motivated and detail-oriented software engineer with a passion for creating robust and efficient solutions. With a solid foundation, a degree in computer science, and over 7+ of hands-on experience in the software development industry, I bring a unique blend of technical expertise and creative problem-solving skills to the table.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Automation
    Front-End Development
    Database
    Automated Testing
    API
    Software Testing
    DevOps
    Django
  • $50 hourly
    🤖 Why Automation? 🤖 If you run a service-based business (or any business for that matter), you're always in action. Too many tasks, too little time. Automating your tasks -- ESPECIALLY the revenue-generating activities (e.g. sales and marketing) -- is the magic ingredient to impact your bottom line. Let me help you win back your time and cut back on overhead costs with task and marketing automation that works. 🤔 Why Me? 🤔 Businesses in need of a competitive edge look out for automation specialists like me to help them run their ventures more efficiently. It doesn't hurt to have someone suggest and build automations for your most important tasks. And yeah, in case you haven't noticed, there are only so many automation geeks with proven experience out there. Run your business like a well-oiled machine. Don't leave anything to chance. 💻 Software Platforms I've Used for Client Automations 💻 ALL Google Apps (including Google Apps Script, Sheet, Docs, Drive, Slides, and more) **Automation Platforms** - Zapier - Integromat **CRMs & Email Marketing Platforms** - ActiveCampaign - ConvertKit - Drip - Mailchimp - GoHighLevel - Hubspot - Intercom - Pipedrive - Salesforce Project/Process Management Platforms: - Asana - ClickUp - Monday.com - Notion.so - Process.st - Trello Meeting Schedulers: - Acuity Scheduling - Calendly Forms & Surveys: - JotForm - Paperform -Typeform Whether you need that Calendly appointment to register on your CRM, that website visit to trigger an email drip campaign, or that Asana task to trigger a Slack message once it's completed, I can help. 👉 Curious to Know More? The fastest way to see whether we're a good fit is to schedule a 15-min meeting -- so you can walk me over your needs and goals. If I can handle it on time and within budget, I'd outline the steps to get started. We'll be automation partners for as long as you need me. Worst case scenario? You receive question that help you articulate your goals more clearly and tips to improve your automation -- for free. Your business needs less overhead. 📧 Reach out using one of the buttons on this page, and I'll get back to you within 24 hours. Let's chat automation -- and how it can help you win back your time.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Make.com
    Pipedrive
    Airtable
    Automation
    Customer Relationship Management
    API Integration
    API
    Drip
    Zapier
    Email Marketing
    Marketing Automation
  • $120 hourly
    Looking to start a crypto mining operation for passive income or a new business venture? Look no further. I specialize in helping businesses and individuals with their crypto mining strategies. Crypto mining passive income is a dynamic field with many factors to consider before making an investment. From electrical power requirements to hardware selection, sourcing and costs, custom charges, pool fees, asset selling prices, and exchange charges, there is a lot to cover. But don't worry, I can guide you through every step of the process from initial setup to final operation. Need help with selecting the right cryptocurrency for mining, equipment sourcing and selection, financial business models, profitability strategies, and more? I've got you covered. I can also assist with electrical power solutions, software selection, miner and rig configurations, and rig/miner troubleshooting. The key to a successful mining operation is professional business models and revenue forecasting. That's why I specialize in designing dynamic financial models that reduce your risk and maximize your profits. These models include Bitcoin mining basic assumptions, capital requirements for investment, income assumptions, profit and loss in terms of Bitcoin and USD, balance sheets, cash flow, return of investment, and more. Let's discuss your project details in a zoom meeting. Message me or invite me to your project, and I'll do my best to provide you with exceptional service. If my skills match your hiring criteria, I'm ready to get started now. 🌟 WHY CHOOSE ME OVER OTHER FREELANCERS? 🌟 ✅ Client Reviews: I focus on providing VALUE to all of my clients and earning their TRUST. The client Reviews and Feedback on my profile are immensely important to me and the value that I provide. ✅ Over-Delivering: This is core to my work as a Freelancer. My focus is on GIVING more than what I expect to RECEIVE. I take pride in leaving all of my clients saying "WOW" ✅ Responsiveness: Being extremely responsive and keeping all lines of communication readily open with my clients. ✅ Resilience: I will not give up on difficult issues or shy away from challenges. Any issue that my clients face, I attack them and find a SOLUTION. ✅ Kindness: One of the biggest aspects of my life that I implement in every facet of my life. Treating everyone with respect, understanding all situations, and genuinely wanting to IMPROVE my client's situations.
    vsuc_fltilesrefresh_TrophyIcon API Development
    DeFi
    Solana
    Solidity
    Rust
    Smart Contract
    Blockchain, NFT & Cryptocurrency
    DApps
    Finance & Accounting
    Ethereum
    Agriculture & Mining
    Mining
    Bitcoin
    Cryptocurrency
    Cryptocurrency Mining
  • $70 hourly
    I am a professional Full Stack Web developer with over 7 years of experience who has rich experience with PHP, React, Next, Node, MERN, MySQL, CI/CD, TS/JS, HTML, CSS, SCSS and Bootstrap, TailwindCSS. I always make reusable clean code and have great eye for UI/UX. My best skill is Bootstrap with latest version and Tailwind CSS. I have built casino/betting websites. Here are my previous work. I have enough ability to finish your project. I can start work immediately and work full time. Looking forward to hearing from you. Best Regards.
    vsuc_fltilesrefresh_TrophyIcon API Development
    .NET Framework
    Web Application
    API
    Netting
    Web API
    ASP
    Angular
    ASP.NET
    Microsoft Project
    ASP.NET Web API
    Business Management
    Management Skills
    Project Management
  • $250 hourly
    Chris distills complex situations into clear foundational drivers, replacing ambiguity with confident, focused momentum. As a trusted executive, he balances corporate strategy, technical architecture, org design, market needs, and financial constraints to solve problems collaboratively. He's a natural innovator with a track record of predictably delivering high-impact projects, and his leadership style is based on curiosity and a shared pursuit of growth and knowledge. Equally at home B2B or B2C, he has notable experience in applied machine learning and complex process automation.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Vendor Management
    Due Diligence
    Code Review
    Risk Management
    UX Research
    Partnership Development
    Hiring Strategy
    Product Strategy
    Pitch Deck
    Ruby on Rails
    Automation
    Machine Learning
    Software Architecture
  • $100 hourly
    Hi there! I'm an ambitious growth-minded digital marketer and web developer with a "can-do" attitude. I have well-rounded expertise, and I'm a jack of all trades, so don't hesitate to challenge me with any and every kind of work. Let my figure-it-out, aggressive spirit contribute to your business goals! Digital Marketing | Project Management | Web Development | Growth & Acquisition
    vsuc_fltilesrefresh_TrophyIcon API Development
    Conversion Rate Optimization
    PHP
    HTML
    JavaScript
    CSS
    Amazon EC2
    Digital Marketing
    A/B Testing
    API Integration
    jQuery
    Facebook Ads Manager
    Google Ads
    Facebook Advertising
  • $25 hourly
    Experienced software engineer in both front-end and back-end roles. With years of experience with small teams and enterprise-level development. Can create scalable and clean APIs for various web applications or DB management. Strong eye for design principles and user-centered design when developing front-end UI. Code: (Proficient) Python, C++, Java, React JS, C#, SQL, Scala Platforms: Spark, Postman, Data Studio, TOAD, Figma, Balsamic, Esri, Adobe XD
    vsuc_fltilesrefresh_TrophyIcon API Development
    React
    Data Structures
    Figma
    C++
    Java
    C#
    SQL
    API
    Postman
    Adobe XD
    IBM Db2
    XML
    Python
  • $28 hourly
    I'm an experienced backend developer with a focus on Django. My specialization lies in building reliable and scalable web applications using the Django framework. I'm ready to assist you in implementing various projects, including websites, APIs, administrative panels, and more. My expertise includes: Developing RESTful APIs using Django REST Framework. Creating user interfaces using Django templates or utilizing modern frontend technologies in conjunction with Django backend. Integrating third-party services and APIs. Ensuring data security and user authentication. Optimizing performance and scalability of applications. Automating processes using task management and task scheduling with Celery. Whether you need to create a new website, extend an existing application, or optimize your infrastructure, I'm ready to take on the task. Get in touch, and together we'll create a web application that meets your needs and expectations.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Redis
    HTML
    CSS
    FastAPI
    Docker
    Celery
    Django Stack
    Python
    Back-End Development
    RESTful API
  • $50 hourly
    Versatile Software lead and creative solutions architect. Recognized for high contributions with integrating AI to optimize app performance and revenue growth and delivering robust software for high-volume businesses in the financial, healthcare, media, and IoT industries with thorough hands-on experience in all levels from design to testing. Known for enthusiasm, positive attitude, and ability to quickly learn, document, and implement optimal solutions in complex systems. Outside of engineering, very passionate about traveling and exploring new cultures and adventures. Feel free to drop me a message, I look forward to hearing from you!
    vsuc_fltilesrefresh_TrophyIcon API Development
    Automation
    CI/CD
    API
    Software
    Cloud Development
    Cloud Architecture
    Software Development
    Software Architecture & Design
    Machine Learning
    Data Science
    App Development
    Artificial Intelligence
  • $30 hourly
    I am US-based professional freelance developer with extensive experience in building high quality sites. My experiences range from building responsive mobile sites that work well cross-browser to building scalable sites for the Ecommere services industry. I like working on projects with a team that cares about creating beautiful and usable interfaces. It's important to me to build long term relationships with clients, so I'm primarily looking for long term projects. I'm flexible with my work timings and am happy to work closely with any existing freelancers you work with. I look forward to hearing from you!
    vsuc_fltilesrefresh_TrophyIcon API Development
    HTTP
    Bootstrap
    Automation
    Zoho CRM
    YAML
    PHP
    WordPress
    Shopify Plus
    PrestaShop
    Symfony
    WordPress e-Commerce
    Liquid
    Zapier
  • $45 hourly
    Professional Summary: • Seven years of SDLC experience, specializing in manual and automated testing. • Proficient in SQL, Python, Java, and testing tools (Selenium, Cypress, Cucumber, Postman). • Expertise in ETL, data pipeline testing, and reporting (SSRS, Power BI). • Experienced in Snowflake, utilizing SQL queries for data integrity validation, backend testing, and efficient ETL processes. • Experienced in Agile methodologies, utilizing Jira for effective bug tracking, • Strong analytical and problem-solving skills with a focus on software quality. • Effective communicator, proficient at translating technical concepts for diverse teams. • Proficient in designing and executing API tests using tools like Postman and Rest Assured. • Experienced in using Azure DevOps for enhanced bug and ticket tracking. • Worked closely with the development team to ensure that the application was bug-free and that all features were working as expected. • Effectively handled multiple projects and met deadlines by synergizing business knowledge with technical expertise. • Collaborated closely with development teams to ensure bug-free applications and feature functionality. • Proficient in clear communication, promoting collaboration among team members for successful project outcomes. • Experience working with XML in testing scenarios, ensuring precise data exchange and suitability across software components. • Worked on a variety of projects, ranging from web applications to mobile applications. • Ability to successfully manage multiple deadlines and multiple projects effectively through a combination of business and technical skills.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Microsoft Power BI
    Automation
    Agile Software Development
    Testing
    Database
    SQL
    Specifications
    Cucumber
    Software QA
    Data Structures
    API
    Agile Project Management
    Test Development
    Product Development
  • $20 hourly
    Proficient in the theory and application of web development in current technologies including the MERN stack. * Browser based technologies HTML/CSS, JavaScript, React.JS, Bootstrap , web API, jQuery, responsive design, PWA's. * Databases - MongoDB and MySQL * Server side development using Express.js, Node.js, various template engines, user authentication. * API design technologies such as Rest, JSON, AJAX (Fetch API), HTTP request methods, and GraphQL * Deployment and delivery, continuous integration, Git, GitHub, Herorku, shell scripting and unit testing * Computer Science theory, algorithms, performance, time complexity, Big O notation, data structures.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Continuous Integration
    CSS
    MongoDB
    Git
    MySQL
    HTML
    ExpressJS
    Bootstrap
    AJAX
    jQuery
    React
    GraphQL
    JavaScript
    Node.js
  • $20 hourly
    Software QA Manual Engineer with 2+ years of experience in testing web, mobile, and API software applications. Professional Summary * Proficient experience in testing across multiple browsers, platforms, and devices, including smartphones and tablets. * Experience in creating detailed test plans and test cases documentations. * Solid understanding of Software Development Life Cycle and Software Testing Life Cycle with Agile methodology. * Skilled in developing and executing Test Scenarios, Test Cases for Smoke, Functional and Regression testing according to the requirements. * Strong knowledge of the Big Life Cycle by logging, retesting, and closing defects in Jira. * Ability to review HTML responsive emails, display banners, and websites in order to ensure they work perfectly across multiple devices/browsers/client's emails.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Report Writing
    Banner
    Software QA
    Bug Reports
    Testing
    Agile Project Management
    Agile Software Development
    Software Testing
    API
    User Acceptance Testing
    Test Results & Analysis
    Beta Testing
    Alpha Testing
    Static Testing
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