Remote Backend Python Engineer — Scale & Migrate (Freelance, 10m)

Darwin Recruitment; Amsterdam; Remote; EUR 83,000 - 124,000; Full time

Job summary

Darwin Recruitment seeks a Backend Python Engineer for an Amsterdam-based HR tech platform. This freelance contract runs 10 months with potential extension, and offers 100% remote work with occasional office visits a couple of times a month.

You will own the backend REST API, drive scaling improvements, introduce async processing, map customer configurations to the new system, and integrate with third-party HR tools.

Qualifications

• 5+ years of commercial Python on large, complex codebases.
• Hands-on REST API development with FastAPI, Django or Flask.
• Strong AWS experience, including Kubernetes (EKS) and PostgreSQL (RDS).
• Solid relational database skills, including SQL query optimisation.
• Building and maintaining CI/CD pipelines (GitHub Actions, CircleCI or GitLab CI).
• A strong testing habit with pytest or similar.
• Ownership from design through to delivery, including architectural decisions.
• Enough React to pick up light frontend work.
• Fluent English and confidence working directly with non-technical teams such as finance and customer success.

Responsibilities

• Own backend REST API and drive scaling of critical services.
• Introduce async processing and optimize performance.
• Map existing configurations to the new system to enable migration automation.
• Integrate with third-party HR systems and extend the platform.
• Collaborate with frontend and product teams to deliver end-to-end features.

Skills

Python

REST API development

AWS

Kubernetes (EKS)

PostgreSQL

SQL optimization

CI/CD pipelines

Testing with pytest

Frontend basics (React)

Fluent English

CET time zone EU

Fintech / payments knowledge

Tools

FastAPI/Django/Flask

GitHub Actions

CircleCI

GitLab CI

Celery

SQS

RabbitMQ

React (light frontend)

Job description

Darwin Recruitment seeks a Backend Python Engineer for an Amsterdam-based HR tech platform. This freelance contract runs 10 months with potential extension, and offers 100% remote work with occasional office visits a couple of times a month.

You will own the backend REST API, drive scaling improvements, introduce async processing, map customer configurations to the new system, and integrate with third-party HR tools.