About the Role

We are looking for a Senior Software Engineer with a strong combination of backend engineering depth, applied AI experience, and blockchain/digital assets expertise. This role sits at the intersection of enterprise fintech and emerging technology — you will be building and scaling systems that matter, in an environment where your work has real-world financial impact.

If you have spent years writing production-grade Node.js, have crossed into AI-integrated systems, and have hands-on experience with blockchain development and smart contracts — this role was built for you.

What You'll Be Doing

Designing and building scalable, high-availability REST and GraphQL APIs using Node.js and TypeScript
Integrating AI/ML capabilities into backend services and fintech workflows
Developing and deploying smart contracts for digital asset and crypto use cases
Contributing to blockchain architecture decisions, protocols, and digital asset infrastructure
Working within distributed microservices ecosystems — troubleshooting, optimizing, owning
Collaborating across CI/CD pipelines, containerized environments (Docker, Kubernetes), and cloud platforms (AWS/Azure)
Driving security-first development practices including JWT, OAuth, and SSO implementation
Operating in an Agile environment with cross-functional squads

What You Need to Bring

Mandatory:

8+ years of professional software engineering experience
5+ years of hands-on Node.js and JavaScript in production environments
Minimum 1 year in TypeScript
Demonstrable AI/ML integration experience in real production systems — not just familiarity
Blockchain development experience: smart contract development, digital assets, crypto protocols
Solid understanding of Kafka, message queues, and event-driven architecture
Experience with Docker and Kubernetes in production
REST API design and GraphQL proficiency
Banking, fintech, or financial services background strongly preferred

Strong advantage:

Experience with Solidity or other smart contract languages
Exposure to DeFi protocols, tokenisation, or digital asset custody platforms
API gateway experience (3Scale or equivalent)
Familiarity with regulatory and compliance considerations in digital finance

Education

Degree or postgraduate qualification in Computer Science, Engineering, or a related field — or equivalent demonstrated experience.

GSSTech Group

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Senior Software Engineer - Node.js, AI & Blockchain