Celara

API Engineer – Platform Integrations (AVM-AE-20250714)
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Remote

Celara /

Contract /

Remote

[Apply for this job](https://jobs.lever.co/celaralabs/877f1653-f130-46a1-9a3e-60d602f24c12/apply)

We are looking for an experienced API Engineer to design and build a high-performance unified API platform that connects our applications to multiple external and internal services. 

  

This is a hands-on engineering role where you will architect, implement, and optimize secure, reliable APIs that serve as the foundation of our next-generation product capabilities.

### Key Responsibilities:

*   Design and Develop: Build a robust API layer that integrates with a variety of third-party and internal services.
*   Routing and Orchestration: Implement request routing, fallback strategies, and dynamic service selection logic.
*   Authentication & Security: Develop secure authentication and authorization mechanisms (API keys, OAuth, RBAC).
*   Rate Limiting and Quotas: Enforce per-client rate limits and usage quotas to control access and protect resources.
*   Observability: Implement logging, tracing, and monitoring of requests and responses for analytics and debugging.
*   Performance Optimization: Ensure low-latency, high-availability API endpoints, including caching strategies and load balancing.
*   Collaboration: Work closely with product and engineering teams to integrate the API platform into the broader infrastructure.
*   Documentation: Create clear API documentation, developer guides, and internal tooling for easier adoption.

### About You:

*   **Experience:**
*   3–6+ years developing production-grade APIs in Python (FastAPI), [Node.js](http://Node.js) (Express), or Go.
*   Hands-on experience designing and maintaining scalable API services.
*   Experience working with enterprise API Gateway solutions (Kong, Mongo, MuleSoft, APISIX
*   Familiarity with cloud-native architecture (AWS, GCP, or Azure)

  

*   **Technical Skills:**
*   Proficiency in RESTful API design principles.
*   Strong understanding of authentication standards (OAuth 2.0, JWT).
*   Experience with rate limiting, caching (Redis), and monitoring tools.
*   Comfort integrating external APIs and designing clean abstraction layers.

  

*   **Mindset:**
*   You value clean code, clear documentation, and thoughtful testing.
*   You’re comfortable working in early-stage environments and iterating quickly.
*   You have strong communication skills and a collaborative approach.

  

### Nice to Have:

*   Experience working on multi-tenant platforms or large-scale API gateways.
*   Familiarity with prompt management or workflow orchestration (not required).
*   Exposure to observability stacks (OpenTelemetry, Datadog, Prometheus)

[Apply for this job](https://jobs.lever.co/celaralabs/877f1653-f130-46a1-9a3e-60d602f24c12/apply)

Security software

Python

Node.js

Express.js

MongoDB

Amazon

System security

Azure

Redis

Testing

Project documentation

Data analytics

Team collaboration

Infrastructure

Communication Skills

Fastapi

Golang

Kong

MuleSoft

Google Cloud Platform

RESTful API

OAuth 2.0

Datadog

Prometheus

API Engineer – Platform Integrations (AVM-AE-20250714)