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API & Integrations

$40/hr Starting at $250

Connect your applications and automate business processes with professional API & Integration services designed for startups, enterprises, and growing businesses. From custom API development and third-party integrations to workflow automation and cloud connectivity, every solution is built for security, scalability, and seamless performance.


Whether you need REST APIs, GraphQL services, payment gateway integrations, CRM connectivity, or enterprise automation, every project is tailored to streamline operations and improve system efficiency.


Our API & Integration Services Include:


  • Custom API development

  • REST API development

  • GraphQL API development

  • SOAP API integration

  • Third-party API integration

  • Payment gateway integration

  • CRM integration

  • ERP integration

  • SaaS integrations

  • Cloud API integration

  • Webhook implementation

  • Event-driven architecture

  • OAuth & JWT authentication

  • API security

  • Microservices development

  • Serverless integration

  • AI & machine learning APIs

  • IoT integrations

  • Workflow automation

  • Ongoing API maintenance & support


Our Process


Every project begins by understanding your business workflows, integration requirements, existing systems, and technical objectives.


We design secure and scalable APIs, integrate third-party platforms and business applications, implement authentication and automation, and thoroughly test every endpoint for performance and reliability.


Our approach combines modern API architecture, secure development practices, cloud-native technologies, automation, and performance optimization to create reliable integrations that simplify operations and support business growth.


Every API is tested for functionality, security, scalability, compatibility, and documentation before deployment.

Final deliverables may include custom APIs, third-party integrations, webhook implementations, authentication systems, cloud deployments, technical documentation, API testing, workflow automation, optimization, and ongoing technical support.


Whether you need custom API development, system integrations, cloud connectivity, payment gateway integration, CRM automation, or enterprise API solutions, every project is delivered with professionalism, technical expertise, and a commitment to building secure, scalable, and future-ready integrations.

About

$40/hr Ongoing

Download Resume

Connect your applications and automate business processes with professional API & Integration services designed for startups, enterprises, and growing businesses. From custom API development and third-party integrations to workflow automation and cloud connectivity, every solution is built for security, scalability, and seamless performance.


Whether you need REST APIs, GraphQL services, payment gateway integrations, CRM connectivity, or enterprise automation, every project is tailored to streamline operations and improve system efficiency.


Our API & Integration Services Include:


  • Custom API development

  • REST API development

  • GraphQL API development

  • SOAP API integration

  • Third-party API integration

  • Payment gateway integration

  • CRM integration

  • ERP integration

  • SaaS integrations

  • Cloud API integration

  • Webhook implementation

  • Event-driven architecture

  • OAuth & JWT authentication

  • API security

  • Microservices development

  • Serverless integration

  • AI & machine learning APIs

  • IoT integrations

  • Workflow automation

  • Ongoing API maintenance & support


Our Process


Every project begins by understanding your business workflows, integration requirements, existing systems, and technical objectives.


We design secure and scalable APIs, integrate third-party platforms and business applications, implement authentication and automation, and thoroughly test every endpoint for performance and reliability.


Our approach combines modern API architecture, secure development practices, cloud-native technologies, automation, and performance optimization to create reliable integrations that simplify operations and support business growth.


Every API is tested for functionality, security, scalability, compatibility, and documentation before deployment.

Final deliverables may include custom APIs, third-party integrations, webhook implementations, authentication systems, cloud deployments, technical documentation, API testing, workflow automation, optimization, and ongoing technical support.


Whether you need custom API development, system integrations, cloud connectivity, payment gateway integration, CRM automation, or enterprise API solutions, every project is delivered with professionalism, technical expertise, and a commitment to building secure, scalable, and future-ready integrations.

Skills & Expertise

APIAPI DevelopmentApp DevelopmentCGICloud ApiCRM IntegrationData ExtractionDesignMicroservicesOpen SourcePayment Gateway IntegrationSoftware DevelopmentSoftware Testing

195 Reviews

  • Preet 48 says,

    Ken is highly reliable, professional, and consistently maintains a high standard of quality in everything he does. His dedication and integrity made the entire process seamless.

    for Social Media Marketing/Sales Specialist on Jun 26, 2026

  • Robert_Krantz says,

    Ken was great to work with. On time. Great execution of what I needed and fast. You will be happy working with him.

    for FILWS Data Scraping on Jun 23, 2026

  • Robert_Krantz says,

    Ken is great! Detail oriented. Fast. Great results. Highly recommend him.

    for FILWS Data Scraping on Jun 18, 2026

  • ScienceTeacher says,

    Ken and his associates were hired to create an Microsoft Access Database for us to manage visitors to our museum. He is accessible by phone and e-mail and has excellent communication skills. The database he created manages payments, invoices, schedules it on our calendar with one click, e-mails confirmations, and produces reports in one easy to use design. There were some edits that needed to happen to work out the kinks but he stuck with the project until it worked 100% and fulfilled the requirements as we described in our project description. When hiring on GURU, having a clear project description and supporting examples of any kind, with clear needs and outcomes on GURU is important.

    for MS Access Field Trip Booking and Invoice on May 06, 2026

  • robert 1123 says,

    we keep coming back very easy to work with and budget friendly.

    for sending and receiving payments on Mar 31, 2026

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