Job brief
We are seeking a detail-oriented API Developer to join our engineering department and lead the evolution of our platform's integration layer. You will architect and scale the high-traffic endpoints that power our core service infrastructure, ensuring our internal and external systems communicate with maximum efficiency. This role offers the opportunity to influence our architectural direction while working with modern cloud-native technologies in a collaborative, code-centric environment. If you are passionate about building performant systems and simplifying complex data exchanges, we invite you to help us build the next generation of our API ecosystem.
Key highlights
- Architect and maintain highly scalable RESTful and GraphQL APIs that support seamless integration between internal microservices and third-party partner systems.
- Implement stringent security protocols including OAuth2, OpenID Connect, and API rate limiting to protect sensitive data and prevent unauthorized system access.
- Optimize service performance and database query efficiency by utilizing caching strategies such as Redis or Memcached to ensure sub-100ms response times.
- Collaborate with DevOps teams to manage containerized API deployments on Kubernetes clusters, focusing on auto-scaling and high availability in cloud environments.
What is a API Developer?
An API Developer is a specialized software engineer tasked with designing, implementing, and maintaining the communication interfaces that allow disparate systems to exchange data seamlessly. By mastering technologies such as Node.js, Java Spring Boot, or Python FastAPI, an API Developer ensures that services are secure, performant, and highly scalable. This role is fundamental to modern digital architecture, as an effective API Developer bridges the gap between complex backend logic and various client-side applications, microservices, or external third-party integrations.
What does a API Developer do?
In this role, an API Developer spends their day writing high-performance server-side code, defining clear API contracts using Swagger or OpenAPI, and implementing robust authentication mechanisms like OAuth2 or JWT. They frequently collaborate with frontend engineers to resolve data integration challenges, optimize database queries to reduce response latency, and manage the deployment lifecycle of services through automated CI/CD pipelines. An API Developer also creates comprehensive technical documentation and monitors logs via tools like ELK Stack or Datadog to proactively resolve bottlenecks and ensure high availability for all integrated platforms.
Key responsibilities
- Architect and maintain highly scalable RESTful and GraphQL APIs that support seamless integration between internal microservices and third-party partner systems.
- Implement stringent security protocols including OAuth2, OpenID Connect, and API rate limiting to protect sensitive data and prevent unauthorized system access.
- Optimize service performance and database query efficiency by utilizing caching strategies such as Redis or Memcached to ensure sub-100ms response times.
- Develop and manage automated integration and unit testing suites using Jest, Mocha, or JUnit to ensure code quality and system reliability across environments.
- Collaborate with DevOps teams to manage containerized API deployments on Kubernetes clusters, focusing on auto-scaling and high availability in cloud environments.
- Document technical requirements and API endpoints using Swagger/OpenAPI specifications to facilitate clear communication between engineering teams and external developers.
- Analyze application telemetry and logs from monitoring tools like Datadog or New Relic to identify, debug, and resolve performance bottlenecks in production.
- Participate in full-stack code reviews and sprint planning sessions to maintain architectural consistency and support overall software development lifecycle (SDLC) goals.
Requirements and skills
- 3+ years of professional experience in building and deploying high-traffic, production-grade RESTful or GraphQL APIs using Node.js, Java, Python, or Go.
- Proficiency in data modeling and query optimization for relational databases like PostgreSQL or MySQL and NoSQL solutions like MongoDB or DynamoDB.
- Expertise in containerization technologies including Docker and orchestration platforms like Kubernetes for managing microservice-based application infrastructure.
- Strong understanding of cloud architecture concepts and experience deploying services within AWS, Azure, or GCP cloud environments.
- Bachelor’s degree in Computer Science, Software Engineering, or a related technical field from an accredited institution.
- Relevant professional certifications such as AWS Certified Developer, Microsoft Certified: Azure Developer, or Google Professional Cloud Developer are highly preferred.
- Demonstrated ability to convey complex technical architecture and API design decisions to product managers and non-technical stakeholders clearly.
- Extensive experience with Git version control, CI/CD pipeline configuration, and automated testing frameworks in a fast-paced development environment.
FAQs
What does an API Developer do on a daily basis?
An API Developer focuses on the connectivity layer of software systems. Daily, they design and refine API endpoints, write server-side code to process data requests, and ensure that different microservices can communicate effectively. They also perform debugging, write unit tests, and review performance metrics to ensure the system handles concurrent traffic without latency issues.
What skills are required for an API Developer?
Key skills include proficiency in backend languages like Java, Python, or Node.js, and a deep understanding of API protocols like REST, GraphQL, and gRPC. Essential technical skills also include working with JSON/XML data formats, mastering database systems, and implementing security frameworks like OAuth. Soft skills, particularly the ability to document technical processes for other developers, are also critical.
Who does an API Developer work with in an organization?
An API Developer sits at the intersection of several teams, working closely with Frontend Developers who consume their APIs, DevOps Engineers who manage the deployment infrastructure, and Product Managers who define the integration requirements. They often act as a bridge between internal systems and external stakeholders or partner engineering teams during integration projects.
Why is an API Developer important for digital businesses?
As businesses move toward modular, microservices-based architectures, the API Developer becomes vital for ensuring all components function as a unified system. They are responsible for the speed, reliability, and security of data exchange, which directly impacts the user experience of web and mobile applications. Without a skilled API Developer, businesses struggle to scale their software or integrate third-party tools effectively.