Senior Backend Developer (Blockchain Focus)

Placements24; Randburg; On-site; ZAR 900,000 - 1,500,000; Full time

Benefits offered by this job

Competitive salary

Health benefits

Retirement plan

Growth opportunities

Office in Randburg

Job summary

Placements24 in Randburg, Gauteng is seeking a Senior Backend Developer to design, build, and maintain scalable server-side systems with a focus on blockchain integrations and robust APIs. You will work with Python, Node.js, Go, or Java, implement RESTful services, and collaborate with frontend, product, and security teams in a fast-paced fintech environment.

This role requires full-time presence at our Randburg office and offers opportunities for growth and involvement in cutting-edge

Qualifications

• Proven experience as a Senior Backend Developer with blockchain focus.
• Strong knowledge of blockchain protocols and smart contracts.
• Experience with SQL and NoSQL databases.
• Excellent problem-solving and collaboration skills.

Responsibilities

• Design, develop, and maintain scalable and high-performance backend systems.
• Integrate blockchain technologies and smart contracts into backend services.
• Develop and manage APIs for seamless integration with frontend applications and third-party services.
• Ensure the security, integrity, and reliability of backend systems and data.
• Optimize application performance, database queries, and network communication.
• Collaborate with frontend developers, product managers, and other stakeholders.
• Implement robust testing strategies, including unit, integration, and end-to-end tests.
• Troubleshoot and resolve complex backend issues and production incidents.
• Stay current with backend development best practices and emerging blockchain technologies.

Skills

Backend development

Blockchain concepts

APIs

Problem solving

Team collaboration

Education

Bachelor's degree in Computer Science, Engineering, or related field

Tools

Python

Node.js

Go

Java

SQL

NoSQL

REST APIs

AWS/Azure/GCP

Git

Job description

About the Role

Our client is a dynamic fintech company expanding its blockchain initiatives and is looking for a Senior Backend Developer with a strong focus on blockchain technologies. This role is based in the bustling hub of Randburg, Gauteng . You will be responsible for designing, developing, and maintaining the server-side logic of our applications, with a specific emphasis on integrating blockchain functionalities, managing decentralized databases, and building robust APIs. The ideal candidate possesses extensive experience in backend development, a solid understanding of blockchain protocols and their application, and a passion for innovation in the digital asset space. This is an opportunity to work on challenging projects in a fast-paced environment and contribute to the future of financial technology. This role requires full-time presence at our Randburg, Gauteng office.

Key Responsibilities

• Design, develop, and maintain scalable and high-performance backend systems.
• Integrate blockchain technologies and smart contracts into backend services.
• Develop and manage APIs for seamless integration with frontend applications and third-party services.
• Ensure the security, integrity, and reliability of backend systems and data.
• Optimize application performance, database queries, and network communication.
• Collaborate with frontend developers, product managers, and other stakeholders.
• Implement robust testing strategies, including unit, integration, and end-to-end tests.
• Troubleshoot and resolve complex backend issues and production incidents.
• Stay current with backend development best practices and emerging blockchain technologies.

Requirements

• Proven experience as a Senior Backend Developer with expertise in languages like Python, Node.js, Go, or Java.
• Strong understanding of blockchain concepts, protocols (e.g., Ethereum, Bitcoin), and smart contract interactions.
• Experience with database technologies (SQL and NoSQL) and data modeling.
• Proficiency in designing and implementing RESTful APIs.
• Familiarity with cloud platforms such as AWS, Azure, or GCP.
• Experience with version control systems (e.g., Git).
• Excellent problem-solving, debugging, and analytical skills.
• Strong communication and collaboration abilities.
• Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent work experience.

Benefits

• Competitive salary and performance-based incentives.
• Comprehensive health and retirement benefits.
• Opportunities for professional growth and skill development.
• Work on innovative projects at the intersection of finance and blockchain.
• Collaborative and results-oriented work environment.
• Proximity to key business districts in Randburg, Gauteng .