Senior Blockchain Engineer (Backend)

Placements24; Willows (CA); On-site; USD 54,000 - 78,000; Full time

Benefits offered by this job

Competitive salary

Stock options

Medical insurance

Relocation assistance

Paid time off

Job summary

Placements24 is seeking a Senior Blockchain Engineer to design, build, and maintain robust backend services for blockchain applications, including smart contracts and dApps, based in Welkom, ZA.

The role emphasizes scalable, secure infrastructure, collaboration with frontend teams, and staying ahead of blockchain innovations. Candidates should have experience with Go/Rust/Node.js/Python and Solidity, plus cloud and containerization skills.

Qualifications

• Proven experience as a backend engineer with blockchain focus.
• Strong programming skills in Go, Rust, Node.js or Python.
• Experience with smart contract development (Solidity).
• Understanding of distributed systems and cryptography.

Responsibilities

• Design, develop, and maintain backend services for blockchain applications.
• Build and integrate smart contracts with backend systems.
• Develop RESTful APIs for dApps and frontend integration.
• Ensure scalability, security, and reliability of infrastructure.
• Collaborate with frontend teams and manage data on-chain/off-chain.

Skills

Go

Rust

Node.js

Python

Education

Bachelor's degree in Computer Science or related field

Tools

Solidity

Docker

Kubernetes

AWS

SQL/NoSQL

Job description

About the Role Our client, a prominent player in the decentralized finance (DeFi) arena, is looking for a talented Senior Blockchain Engineer to enhance their backend systems. This role is integral to building robust, scalable, and secure decentralized applications that power the future of finance. You will be responsible for designing, developing, and maintaining the core blockchain infrastructure and services that support our innovative product offerings. The position is located in **Welkom, Free State, ZA**, offering a unique opportunity to contribute to groundbreaking projects within the crypto and blockchain industry. The ideal candidate possesses a strong foundation in software engineering principles, coupled with specialized knowledge of blockchain technologies and distributed systems. You'll join a dynamic team that values collaboration, technical excellence, and a commitment to pushing the boundaries of what's possible in decentralized technology. This is your chance to make a significant impact on the future of financial services.

Key Responsibilities

• Design, develop, and implement high-performance backend services for blockchain applications.
• Develop and maintain smart contracts and integrate them with backend systems.
• Build and optimize APIs for seamless interaction with decentralized applications (dApps).
• Ensure the scalability, security, and reliability of blockchain infrastructure.
• Work closely with frontend developers to integrate backend services with user interfaces.
• Implement robust data management solutions for on-chain and off-chain data.
• Troubleshoot and resolve complex technical issues across the stack.
• Participate in code reviews, testing, and deployment processes.
• Stay current with emerging blockchain technologies and industry trends.
• Contribute to architectural decisions and technical strategy for backend systems.

Requirements

• Proven experience as a Backend Engineer with a focus on blockchain technologies.
• Strong programming skills in languages such as Go, Rust, Node.js, or Python.
• Experience with smart contract development (Solidity preferred).
• Deep understanding of blockchain principles, consensus mechanisms, and cryptographic concepts.
• Experience with distributed systems and database technologies (SQL/NoSQL).
• Familiarity with cloud platforms (AWS, Azure, GCP) and containerization (Docker, Kubernetes).
• Experience building and consuming RESTful APIs.
• Excellent problem-solving, debugging, and analytical skills.
• Strong understanding of security best practices for backend systems and dApps.
• Bachelor's degree in Computer Science or a related field, or equivalent professional experience.

Benefits

• Competitive salary and attractive bonus structure.
• Comprehensive medical, dental, and vision insurance.
• Generous stock options package.
• Opportunities for career advancement and professional development.
• Exposure to cutting-edge blockchain technology and challenging projects.
• Collaborative and innovative work culture.
• Paid time off and company holidays.
• Relocation assistance for qualified candidates.
• Convenient office location in **Welkom, Free State, ZA**.