Senior Backend Blockchain Engineer — Fintech Payments

Placements24; Soweto; On-site; ZAR 900,000 - 1,300,000; Full time

Job summary

Placements24 is seeking a Backend Blockchain Developer in Soweto, Gauteng, ZA. You will build robust backend services and APIs for blockchain applications, optimize and deploy smart contracts, and integrate protocols with existing systems.

The role emphasizes security, scalability, and collaboration with frontend and product teams. The candidate should have 4+ years in backend development, solid blockchain experience, knowledge of Solidity, and proficiency in Node.js, Python, Go or Java.

Qualifications

• Bachelor's degree or equivalent in CS/SE.
• 4+ years backend development experience.
• Proven blockchain development experience.
• Experience with Solidity and smart contracts.
• Proficiency in Node.js, Python, Go or Java.
• DBs such as PostgreSQL or MongoDB.
• Familiarity with cloud platforms (AWS/Azure) and Docker.
• Strong problem-solving and teamwork skills.
• Experience with version control systems like Git.

Responsibilities

• Build and maintain backend services and APIs for blockchain apps.
• Develop and optimize smart contracts for payments and transactions.
• Integrate blockchain protocols with backend and third-party services.
• Ensure security, scalability, and performance of backend systems.
• Write clean, maintainable, well-documented code.
• Collaborate with frontend developers for seamless integration.
• Participate in code reviews, testing and debugging.
• Stay updated on blockchain tech and backend trends.
• Contribute to architectural decisions and strategy.

Skills

Blockchain dev

Backend dev

Smart contracts

Node.js

Python

Go

Java

Distributed ledger

Problem-solving

Teamwork

Education

Bachelor's degree in CS/SE

Tools

PostgreSQL

MongoDB

AWS

Azure

Docker

Git

CI/CD

Job description

Placements24 is seeking a Backend Blockchain Developer in Soweto, Gauteng, ZA. You will build robust backend services and APIs for blockchain applications, optimize and deploy smart contracts, and integrate protocols with existing systems.

The role emphasizes security, scalability, and collaboration with frontend and product teams. The candidate should have 4+ years in backend development, solid blockchain experience, knowledge of Solidity, and proficiency in Node.js, Python, Go or Java.