Benefits of adopting an API-driven approach

Improve business agility 

Reduce operational costs

Maximize value from your enterprise IT assets

Make everything accessible & reusable via APIs

Increase productivity and your ability to innovate

Increase speed in meeting line-of-business user demands

Future-proofing with the ability to develop on top of an existing feature

Modularise the database to serve various frontend applications and websites

Our API development services

API Consulting

APIs are often treated as an afterthought to the applications they connect. With unclear requirements, the APIs lack essential capabilities and find it difficult to adapt when your applications change. QED42’s API specialists guide our clients through the business and technical aspects of API development to develop a verified set of APIs required to drive the future of your application. Our measured and pragmatic approach to API strategy, design and development ensure that the APIs align with your business and technology goals.

API Design

We believe that ease of use for developers is vital for the adoption of the API. We design APIs that make it quick for developers to deliver, learn, easy to use and specifically aimed at their use cases. Our thoughtfully designed APIs appeal to the developers and are easy to understand and implement. Our modern APIs represent a package of capabilities that are both attractive and independent of any back-end software. 

Custom API Development

Our JavaScript experts leverage the optimal tools to develop powerful and secure custom API solutions for your business. QED42 designs, secures, deploys, integrates and manages API development for desktop, mobile & cloud applications for a seamless end-to-end user experience. Our team carefully reviews your requirements to create bespoke APIs that meet your business needs. Our custom API solutions simplify and accelerate shared workflows and create personalized customer and partner experiences.

Cloud API Development

We help businesses to build, analyze, operate, and scale APIs in secure environments. Our cloud API development services enhance the cloud experience and enable cross-cloud compatibility. Cloud APIs unlock the ability for software to request and receive data from services through direct, indirect, vendor-specific, or cross-platform interfaces. Our API developers integrate applications and other workloads to the cloud, using APIs to ensure access across different platforms and devices. Our cloud APIs offer a robust interface for developing remote solutions across business applications and storage systems.

Third-party API Integrations

Our custom third-party API integrations help our clients connect their applications and websites with existing software, enabling them to add features and functionalities that drive favourable business results. We improve your productivity and efficiency by integrating third-party APIs to harness data and features in your applications. Our API developers use REST, JSON, SOAP and other relevant technologies to ensure seamless interaction between your APIs. We also provide complete support, post-implementation and ensure optimal performance and security of the connections between services. 

API as a Service (APIaaS)

API as a service enables you to enhance your existing applications and processes through API-first products. An APIaaS platform will provide you with the ability to connect with third-party APIs, generate API documentation, and will allow you to construct, test, and deploy your company’s very own API services. QED42 uses HTTP/HTTPS, XML, JSON, REST, SOAP for executing API-based micro-services with API as a service.  development services to deliver an APIaaS platform that’s robust, secure, and will solve your business needs.

API Testing

API’s form a crucial link in today’s interconnected world of programs, apps, websites, and servers. We offer API testing services that ensure all data accessed is being properly processed by the API, ensuring better security and compliance. We align our API testing with your business needs, saving time, money and avoiding tedious manual regression testing. Our developers are experts in the CI/CD process and automated testing, including unit testing, functional testing, penetration testing, UI testing, and load testing to check APIs’ performance.

Technologies and frameworks

We offer custom API integration services to






Real Estate






Startup MVPs


Legal Tech

Related services

Web API Development

Web App Development

Web design, development, and optimization at scale.

Mobile API Development

Mobile App Development

Turning your ideas into engaging applications and experiences.

Progressive Web Apps

JavaScript Development

Scale your business with robust, and high-performing applications.

Transform your ideas into delightful, feature-rich mobile apps with us.


What are APIs?

What are custom APIs? Why do I need them?

What is third-party API integration?

What are the types of APIs?