Python Engineer (DRWN)

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

Benefits offered by this job

Remote work

Occasional office visits

Job summary

Darwin Engineering is seeking a Backend Python Engineer to join a small platform team. You will own the backend REST API, fix scaling bottlenecks and introduce async processing, and map customer configurations for migration automation.

You will work with Python (FastAPI/Django/Flask), AWS, Kubernetes (EKS), PostgreSQL, and CI/CD pipelines, with light React for frontend tasks. This 10-month freelance role is remote (Amsterdam) with occasional office visits and a CET-friendly schedule.

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 development and scale the platform during migration.
• Identify and fix scaling bottlenecks and introduce async processing where missing.
• Map customer configurations to the new system for migration automation.
• Extend and maintain the backend for a self-service portal and integrate with third-party HR systems.
• Collaborate with frontend and non-technical teams across the project.

Skills

Python

REST API development

AWS

Kubernetes (EKS)

PostgreSQL

CI/CD

Testing with pytest

React basics

English fluency

European CET timezone ready

Tools

FastAPI

Django

Flask

GitHub Actions

CircleCI

GitLab CI

Celery

SQS/RabbitMQ

React

Job description

Client Location - Amsterdam, Netherlands

Remote work offering - 100% (optional office visits a couple of times a month)

Client Industry - Employee Benefits / HR Tech

Contract Length - 10 months (extendable)

Contract type - Freelance

Project focus

Backend Python Engineer (DRWN)

Job title - Backend Python Engineer

Client Location - Amsterdam, Netherlands

Remote work offering - 100% (optional office visits a couple of times a month)

Client Industry - Employee Benefits / HR Tech

Contract Length - 10 months (extendable)

Contract type - Freelance

Project focus

An established employee benefits platform needs to scale ahead of a large customer migration. Joining a small, independent platform team working in Python and React, you'll identify and fix scaling bottlenecks, introduce async processing where it's missing, and map existing customer configurations to the new system to drive migration automation. You'll also own the backend REST API for a self-service customer portal, integrate with third-party HR systems and extend the existing transactional platform. The work is roughly 90% backend and 10% frontend.

Key skills and Experience required

• 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
• Based in Europe within CET ±2 hours and available to start by 1 December
• Desirable: fintech, payments or ledger experience, data migrations, async queues (Celery, SQS, RabbitMQ), third-party HR API integrations, Dutch