Senior Full Stack Software Engineer (Python/TypeScript/AWS) (Remote)

DataFin; Johannesburg, Durban; Remote; ZAR 800,000 - 1,100,000; Full time

Job summary

A leading FinTech company in Johannesburg is seeking a highly experienced Senior Full Stack Software Engineer to join its Commerce team. You will build and enhance features for a seamless payment service, requiring 7+ years of Cloud-based Backend Engineering experience with expertise in Python, TypeScript, AWS, MySQL, and MongoDB. This role demands strong problem-solving skills and the ability to work collaboratively in a fully remote team.

Qualifications

• 7+ years of experience in Cloud-based Backend Engineering.
• Strong experience with Python and TypeScript.
• AWS experience (Lambda, API Gateway, Serverless).
• Database experience (MySQL, MongoDB).
• Ability to design elegant, scalable solutions.

Responsibilities

• Build new features and enhance existing Commerce features.
• Design, build, and integrate technical requirements.
• Ensure secure, scalable, and compliant payment processing.
• Troubleshoot and debug Commerce issues.
• Diagnose and propose solutions for incidents.

Skills

Cloud-based Backend Engineering

Python

TypeScript

AWS

MySQL

MongoDB

Problem-Solving

Collaboration

Tools

Jira

Confluence

Git

Postman

Cypress

GitLab Pipelines

Grafana

Sentry

Datadog

Job description

Overview

A highly experienced Senior Full Stack Software Engineer is sought by a cutting-edge FinTech company providing a seamless payment service to join its Commerce team. The team manages the end user experience for a customer to make a payment with the business, including the way in which merchants integrate with the platform and configure their tailored checkout experience. The team’s portfolio consists primarily of products and services relating to enabling checkout in different means, such as via an embedded checkout on the merchant’s website, redirecting to a hosted checkout page on our domain, serving once off customised payment link, or a multi-use page that customers can pay through. This team maintains existing products and services and builds out new products and features to meet merchants’ needs and new business opportunities. You will require 7+ years Cloud-based Backend Engineering experience with proficiency in Python, TypeScript AWS, MySQL & MongoDB.

Duties

• Successfully build new features and enhance existing Commerce features.
• Design, build, and integrate technical requirements alongside the team across the full Commerce product portfolio.
• Ensure secure, scalable, and compliant payment processing to the Backend.
• Effective troubleshooting and debugging of Commerce issues.
• Independently diagnose and propose solutions for issues and incidents, leveraging logs, monitoring, and code analysis.

Requirements

• Technical Expertise -
  • 7+ Years of experience in Cloud-based Backend Engineering.
  • Strong experience with Python and TypeScript.
  • AWS experience (primarily Lambda, API Gateway and Serverless).
  • Database experience (MySQL, MongoDB).
  • Bonus - Experience with Payments.
• Problem-Solving & Ownership -
  • Ability to design elegant, scalable solutions for new features.
  • Able to iteratively maintain and evolve existing features to meet best practices and modern standards.
  • Takes initiative, owns projects end-to-end, and thrives in a fast-paced, high-scale environment.
• Collaboration & Communication -
  • Works well in a fully remote team, with strong written and verbal communication skills in English.
  • Comfortable working cross-functionally with product, operations, and external partners.
• Company Tech Stack -
  • Languages: Python and TypeScript
  • Infrastructure: AWS (primarily Lambda, API Gateway, S3 and Serverless)
  • Databases: MongoDB, MySQL, PostgreSQL
  • Tools: Jira, Confluence, Git, Postman, Cypress
  • CI/CD & Automation: GitLab Pipelines
  • Monitoring: Grafana / Sentry / Datadog