DevOps & Infrastructure Engineer —Blockchain (Hyperledger Fabric)

Squad Tech | Creative Digital Agency

Pakistan

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We are seeking an experienced DevOps and Infrastructure Engineer to design, deploy, and secure a comprehensive cloud and Hyperledger Fabric infrastructure. This infrastructure supports three organizations, a Node.js/Go REST API backend, and a React/Vue (TypeScript) frontend. The ideal candidate will have a strong background in blockchain technology, cloud environments, and automation to ensure a robust, scalable, and secure platform.

Key Responsibilities

- Hyperledger Fabric Infrastructure: Architect and provision a 3-organization network including Orderers, one Peer per organization for the MVP, and Channels. Configure Fabric CA and Membership Service Providers (MSPs), optimize CouchDB state databases, and manage the lifecycle of Go/Node.js Chaincode.

- Cloud and Kubernetes Provisioning: Design and implement production environments on AWS or Azure using Terraform and Infrastructure as Code (IaC) principles. Orchestrate Fabric nodes, API gateways, and frontend containers with Docker and Kubernetes, utilizing Helm charts for deployment management.

- CI/CD Automation: Develop and maintain automated pipelines using tools such as GitHub Actions, GitLab CI, or Jenkins. These pipelines should incorporate unit, integration, and end-to-end testing, manage container registries, and support blue-green or rolling deployment strategies.

- Security and GDPR Compliance: Implement end-to-end TLS/mTLS encryption, Role-Based Access Control (RBAC), network firewalls, and Virtual Private Clouds (VPCs). Secure API gateways with JWT/OAuth2 and manage environment secrets through HashiCorp Vault or equivalent cloud-native vault solutions.

- Observability and Disaster Recovery: Deploy monitoring and alerting systems using Prometheus/Grafana or cloud-native tools like CloudWatch and Azure Monitor. Set up ELK stack logging, automate backups for ledgers and CouchDB, and create disaster recovery runbooks and detailed topology documentation.

- Performance and Service Level Agreements (SLAs): Ensure the system supports approximately 5,000 write transactions per day and 500–1,000 verification queries daily. Maintain P95 latency under 3 seconds for reads and 5 seconds for writes, implement caching layers, and guarantee 99% uptime during UK business hours (08:00–20:00).

Required Qualifications

- Minimum of one year of hands-on experience deploying Hyperledger Fabric in production environments.

- Deep expertise with Hyperledger Fabric components including Peers, Orderers, Channels, Chaincode lifecycle, Fabric CA, MSPs, and CouchDB.

- Advanced skills in cloud platforms such as AWS or Azure, container orchestration with Kubernetes, Docker containerization, Linux server hardening, and Terraform/IaC.

- Strong proficiency in building and maintaining CI/CD pipelines, monitoring with Prometheus/Grafana, logging with the ELK stack, TLS/SSL security protocols, and secrets management using Vault.

- Familiarity with Node.js and Go Fabric SDKs, as well as knowledge of healthcare or pharmaceutical workflows and GDPR compliance requirements.

Preferred Qualifications and Benefits

While not explicitly listed, candidates with experience in blockchain-based healthcare or pharmaceutical projects and a strong understanding of regulatory compliance frameworks will be highly valued. The role offers the opportunity to work on cutting-edge distributed ledger technology within a secure, cloud-native environment, contributing to critical infrastructure that supports multiple organizations.

This position demands a proactive engineer capable of managing complex infrastructure with a focus on security, scalability, and reliability, making it ideal for professionals passionate about blockchain technology and cloud engineering.