API Developer

AgentropyX; Bengaluru; On-site; INR 1,200,000 - 2,400,000; Full time

Job summary

AgentropyX is seeking an experienced API Developer to design, develop, and maintain scalable RESTful and SOAP APIs in an agile setting. The role emphasizes back-end systems, integration with databases and external services, and collaboration with cross-functional teams.

The ideal candidate will have strong experience in .NET Core, Azure API services, and comprehensive API documentation. A focus on security, performance, and reliability is essential for this onsite role in Bengaluru, India.

Qualifications

• Proficient in one or more programming languages including Node.js, Python, Java, Go or C#.
• Solid experience designing REST/SOAP APIs and API-first approaches.
• Knowledge of API security and authentication (OAuth2, JWT, API keys).
• Experience with testing frameworks and API validation tooling.

Responsibilities

• Design, develop, and maintain RESTful and SOAP APIs with scalability and security.
• Integrate APIs with databases, third-party services, and internal apps.
• Collaborate with frontend teams to ensure seamless UI/API interaction.
• Implement caching, rate-limiting, and high-availability measures.
• Write automated tests and maintain API documentation (Swagger/OpenAPI).
• Enforce security controls and keep systems patched and compliant.
• Document usage metrics and report issues to stakeholders.

Skills

API Development Platforms

REST

SOAP

GraphQL

WebSockets

Node.js

Python

Java

Go

C#

Azure

.NET Core

Swagger/OpenAPI

Postman

Apiary

OAuth2

JWT

API Keys

SSL/TLS

Git

MySQL

PostgreSQL

MongoDB

Jest

Mocha

JUnit

OOP

Multithreading

Concurrency

Tools

Swagger/OpenAPI

Postman

Apiary

Job description

• Location: Nagavara, Bangalore
• Experience Level: 7–8 Years
• Employment Type: Full-Time – On Site

Job Summary:

We are looking for an experienced API Developer who thrives in an agile, collaborative environment. The ideal candidate will have strong expertise in designing, developing, and maintaining scalable and secure APIs while working closely with cross-functional teams. The role demands a sound understanding of both front-end and back-end concerns, with a specialization in back-end systems and integration.

Key Responsibilities:

API Design & Development:

• Design, develop, and maintain RESTful and SOAP APIs using industry best practices.
• Develop APIs using .NET Core and Azure API services.
• Produce comprehensive API documentation (Swagger/OpenAPI).
• Ensure reusability, scalability, and structure of all APIs.

Integration:

• Integrate APIs with databases, third-party services, and internal applications.
• Collaborate with front-end teams to ensure seamless UI/API interaction.
• Implement secure authentication methods (OAuth, JWT, etc.).

Performance Optimization:

• Monitor API performance, identify and resolve bottlenecks.
• Implement caching and rate-limiting strategies.
• Optimize for high-availability and high-throughput environments.

API Testing & Quality Assurance:

• Write and execute automated tests (unit, integration, load).
• Debug and troubleshoot API issues and ensure reliability.
• Continuously improve API quality, maintainability, and compliance.

Security:

• Enforce security protocols against threats (e.g., SQL Injection, CSRF, XSS).
• Apply encryption, tokenization, and access control mechanisms.
• Ensure security compliance through patching and regular updates.

Collaboration:

• Work with software engineers, QA, DevOps, and product managers.
• Gather and implement feedback from developers and stakeholders.
• Align API development with broader system architecture and business goals.

Documentation & Reporting:

• Maintain clear and up-to-date API documentation for internal and external use.
• Report API usage metrics, performance data, and issues to stakeholders.

Required Skills & Qualifications:

• Programming: Proficient in one or more – Node.js, Python, Java, Go, or C#.
• API Protocols: Strong in REST, SOAP, GraphQL, WebSockets.
• Tools: Experience with Swagger/OpenAPI, Postman, Apiary.
• Security: Hands-on with OAuth2, JWT, API Keys, SSL/TLS.
• Version Control: Proficient in Git.
• Databases: Experience with both SQL (MySQL, PostgreSQL) and NoSQL (MongoDB).
• Testing: Familiar with Jest, Mocha, JUnit, Postman test suites.
• Development Concepts: Solid grounding in object-oriented programming, multi-threading, and concurrency.

Preferred Qualifications:

• Experience with Azure API Management and .NET Core-based API development.
• Exposure to DevOps pipelines and CI/CD integration.
• Familiarity with containerization (Docker, Kubernetes).
• Understanding of software architecture patterns like microservices or modular monoliths.