Full-stack developer (Mid-Senior)

AiR; Johannesburg; On-site; ZAR 900,000 - 1,300,000; Full time

Job summary

AiR in Johannesburg is seeking a mid-senior full-stack developer to help build scalable FinTech solutions for global transactions. You’ll tackle complex backend challenges with Node.js and TypeScript, focusing on secure cloud integrations and reliable data processing.

You’ll design integrations with third-party systems, implement CI/CD, and collaborate with stakeholders to translate business needs into technical outcomes.

Qualifications

• 5+ years in backend development with Node.js and TypeScript.
• Experience with BDD/TDD and testing frameworks (Jest, Mocha).
• 3+ years integrating and transforming data from third-party APIs.
• Proficient with SQL/NoSQL databases and AWS services.

Responsibilities

• Design and build robust integrations with diverse third-party systems.
• Collaborate with stakeholders to translate business needs into technical solutions.
• Implement and maintain secure, scalable cloud infrastructure.

Skills

Node.js

TypeScript

BDD/TDD

Testing frameworks

Jest

Mocha

SQL/NoSQL

AWS

DevOps

Microservices

API integrations

Tools

AWS Lambda

SQS

EventBridge

CI/CD

Job description

About the job Full-stack developer (Mid-Senior)

Role Overview

Help us revolutionize e-invoicing by building scalable, secure FinTech solutions that process global business transactions. You'll tackle complex technical challenges using cutting-edge cloud technologies.

What We're Looking For

• 5+ years in backend development with Node.js and TypeScript
• Experience with BDD/TDD and testing frameworks (Jest, Mocha)
• 3+ years integrating and transforming data from third-party APIs
• Proficient with SQL/NoSQL databases and AWS (Lambda, SQS, EventBridge)
• Solid understanding of DevOps, CI/CD, and microservices architecture
• Experience in regulated industries or FinTech is a plus

What You'll Do

• Design and build robust integrations with diverse third-party systems
• Collaborate with stakeholders to translate business needs into technical solutions
• Implement and maintain secure, scalable cloud infrastructure

Why You'll Love It

• Work on impactful FinTech products used globally
• Exposure to a wide range of modern technologies and AWS services
• Direct reporting to the Development Manager with learning opportunities