Backend Python & API Engineer for Scalable, Secure APIs

Kyndryl Inc.; Hoofddorp; Hybrid; EUR 70,000 - 100,000; Full time

Job summary

Kyndryl Inc. is hiring a Python & API Developer in the Netherlands. You will design, build, and maintain scalable backend services and REST APIs using Python frameworks like FastAPI or Flask.

You will implement secure authentication, integrate with databases and cloud services, and ensure robust testing with pytest. The role emphasizes hands-on development, code reviews, and CI/CD support in a hybrid, collaborative environment.

Qualifications

• 4–8 years of software/backend development experience.
• Strong hands-on experience with Python and API development.
• Experience building scalable, secure backend services and REST APIs.

Responsibilities

• Design, develop, and maintain RESTful APIs and backend services using Python.
• Build scalable APIs using FastAPI, Flask, or similar frameworks.
• Develop request/response models and validation using Pydantic.

Skills

Python

FastAPI

REST APIs

Pydantic

SQL

pytest

Git

API authentication/authorization

asynchronous programming

Tools

Azure

Docker

Kubernetes/AKS

Azure DevOps

CI/CD

SQLAlchemy

PostgreSQL

Kafka/Event Hubs

OpenTelemetry

Job description

Kyndryl Inc. is hiring a Python & API Developer in the Netherlands. You will design, build, and maintain scalable backend services and REST APIs using Python frameworks like FastAPI or Flask.

You will implement secure authentication, integrate with databases and cloud services, and ensure robust testing with pytest. The role emphasizes hands-on development, code reviews, and CI/CD support in a hybrid, collaborative environment.