Senior Backend Engineer - TS & AWS (Amsterdam Hybrid)

Foxtek; Amsterdam; Hybrid; EUR 96,000 - 179,000; Full time

Benefits offered by this job

Hybrid working

Competitive freelance rates

Job summary

Foxtek in Amsterdam is seeking an experienced freelance Senior Backend Engineer to own design and development of scalable, cloud-native backend systems. The role is ~90% backend, ~10% frontend, with a hybrid arrangement (1 day onsite per week) and a 12-month contract.

You will design and implement backend services in TypeScript/Node.js, build serverless AWS solutions, and work with DynamoDB and REST APIs. Collaboration with engineers and stakeholders is essential.

Qualifications

• Strong commercial experience with TypeScript and Node.js.
• Hands-on production AWS Serverless experience (Lambda).
• Experience with SNS, SQS and EventBridge.
• Knowledge of DynamoDB including single-table design.
• Experience designing REST APIs and event-driven systems.
• Understanding of system design, async processing, caching, and distributed architectures.
• Ability to explain technical decisions and trade-offs.

Responsibilities

• Design, develop and maintain scalable backend services using TypeScript/Node.js.
• Build serverless, event-driven apps on AWS.
• Design APIs, integrations and complex workflows.
• Model DynamoDB data and access patterns.
• Make architectural decisions for scalability and reliability.
• Own solutions from design to production and collaborate with stakeholders.

Skills

TypeScript

Node.js

AWS Serverless

REST APIs

System design

Distributed architectures

Asynchronous processing

Caching

Decision explanations

Tools

SNS

SQS

EventBridge

DynamoDB

Terraform

AWS CDK

React

Python

Job description

Foxtek in Amsterdam is seeking an experienced freelance Senior Backend Engineer to own design and development of scalable, cloud-native backend systems. The role is ~90% backend, ~10% frontend, with a hybrid arrangement (1 day onsite per week) and a 12-month contract.

You will design and implement backend services in TypeScript/Node.js, build serverless AWS solutions, and work with DynamoDB and REST APIs. Collaboration with engineers and stakeholders is essential.