Full-stack developer (Mid-Senior)

ATS Client; Johannesburg; On-site; ZAR 900,000 - 1,350,000; Full time

Job summary

ATS Client in Johannesburg is seeking a mid-senior Full-stack Developer to revolutionize e-invoicing by building scalable FinTech solutions in the cloud. You will tackle complex backend challenges using Node.js, TypeScript, and AWS, delivering secure, scalable microservices that process high-volume transactions.

You’ll design robust integrations with diverse third-party systems, collaborate with stakeholders to translate business needs into technical solutions, and contribute to a modern,

Qualifications

• 5+ years in backend development using 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 cloud services (Lambda, SQS, EventBridge).
• Solid understanding of DevOps, CI/CD and microservices architecture.

Responsibilities

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

Skills

Backend development

BDD/TDD experience

Data integration from APIs

Regulated industries/FinTech exposure

DevOps, CI/CD, microservices

Tools

Node.js

TypeScript

Jest

Mocha

SQL

NoSQL

AWS

Lambda

SQS

EventBridge

CI/CD tooling

Microservices

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
• Develop high-volume transaction processing microservices
• 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