Senior Full Stack Developer (TypeScript)

Gazelle Global; Amsterdam; On-site; EUR 90,000 - 140,000; Full time

Job summary

Gazelle Global is seeking a Senior Full Stack Developer (TypeScript) to help build and evolve the payment infrastructure behind a banking-grade fintech app used by millions. You will work across frontend and backend, focusing on scalable cloud-native solutions on AWS, with emphasis on architecture, design, and deployment.

You will lead with best practices, mentor engineers, and collaborate with product and security teams.

Qualifications

• Senior-level experience in large-scale digital products or platforms.
• Payments domain experience: processing, transaction flows, PSD2, acquiring, gateways and/or wallets.
• Deep experience designing microservices architectures in production.
• Strong AWS hands-on: CloudFormation, ECS, Lambda, DynamoDB, SNS, SQS.
• Proficiency in TypeScript, Node.js, React, Java/Spring Boot, AWS CDK.
• Experience with Agentic Engineering or AI-native development practices.
• Day-to-day use of GitHub Copilot or comparable AI coding tools in a professional team.
• GitHub Actions and AI-assisted delivery workflows as part of your standard process.
• Background in banking and/or fintech.

Responsibilities

• End-to-end design from architecture to deployment and optimization.
• Influence technical direction and raise engineering quality.
• Work across frontend and backend with cloud-native scalability in a regulated payments environment.

Skills

Payments domain knowledge

Microservices design

Cloud-native engineering

AI-native development practices

GitHub Copilot usage

Tools

TypeScript

Node.js

React

Java/Spring Boot

AWS CDK

CloudFormation

ECS

Lambda

DynamoDB

SNS

SQS

GitHub Actions

GitHub Copilot

Job description

Senior Full Stack Developer (TypeScript)

As a preferred supplier to one of our biggest Financial Client, I am seeking for a Senior Full Stack Developer (TypeScript) for a position in Amsterdam, Netherlands. The successful candidate will help build and evolve the payment infrastructure behind one of the Netherlands' most-used apps with 11M+ users, real transactions, zero margin for error.

As a senior engineer, you design end-to-end: from architecture and solution design to deployment and continuous optimization. You influence technical direction, raise the bar on engineering quality, and help fellow engineers grow. The work spans frontend and backend, with a strong focus on cloud-native resilience and scalability in a regulated payments environment.

We build on AWS. We ship on GitHub. We use AI-assisted development not as an experiment but as standard practice.

Requirement

• Senior-level experience in large-scale digital products or platforms
• Payments domain experience: processing, transaction flows, PSD2, acquiring, gateways and/or wallets
• Deep experience designing microservices architectures in production
• Strong AWS hands-on: CloudFormation, ECS, Lambda, DynamoDB, SNS, SQS
• Proficiency in TypeScript, Node.js, React, Java/Spring Boot, AWS CDK
• Experience with Agentic Engineering or AI-native development practices
• Day-to-day use of GitHub Copilot or comparable AI coding tools in a professional team
• GitHub Actions and AI-assisted delivery workflows as part of your standard process
• Background in banking and/or fintech

Contract: 3+ month

Rates: Excellent

Location: Amsterdam

Interview: 2 stages