Johannesburg: Senior Full Stack Software Engineer (Python/TypeScript/AWS) (Remote) posted by Datafin

January 6, 2026 Jobs in Central Johannesburg

Job Description

Senior Full Stack Software Engineer (Python/TypeScript/AWS) (Remote)IT – Software Development
Durban – KwaZulu Natal – South Africa, Johannesburg – Gauteng – South Africa, Cape Town – Western Cape – South Africa, Remote

ENVIRONMENT:

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 teams portfolio consists primarily of products and services relating to enabling checkout in different means, such as via an embedded checkout on the merchants 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

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