Senior Software Engineer - Node.js, AI & Blockchain
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Key skills for this role
About the Role
GSSTech Group is looking for a Senior Software Engineer with deep backend engineering in Node.js, applied AI experience, and blockchain expertise. You will design scalable APIs, integrate AI/ML into fintech workflows, and develop smart contracts for digital assets.
Key Skills for This Role
Responsibilities
- Design and build scalable, high availability REST and GraphQL APIs using Node.js and TypeScript
- Integrate AI/ML capabilities into backend services and fintech workflows
- Develop and deploy smart contracts for digital asset and crypto use cases
- Contribute to blockchain architecture decisions, protocols, and digital asset infrastructure
- Work within distributed microservices ecosystems — troubleshooting, optimizing, owning
- Collaborate across CI/CD pipelines, containerized environments (Docker, Kubernetes), and cloud platforms (AWS/Azure)
- Drive security first development practices including JWT, OAuth, and SSO implementation
- Operate in an Agile environment with cross functional squads
Requirements
- 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
- 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
Full Job Posting
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.
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
- 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.
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