Senior Principal Node.js Engineer (Remote) at KloudOpp Limited

About the Role

• KloudOpp Limited is seeking an elite Senior Principal Node.js Engineer with deep expertise across the complete Node.js ecosystem — including Node.js 10 → 22, modern JavaScript (ES6 → ES2024), TypeScript, backend frameworks, cloud-native design, and distributed microservices.
• This role is for a senior technical leader who has architected, built, and delivered enterprise-grade systems, cloud-native microservices, secure backend applications, and highly complex business logic–driven platforms across FinTech, HealthTech, Blockchain, and Logistics.
• You must be hands-on, advanced in modern backend engineering, comfortable with live system troubleshooting, and capable of teaching and mentoring at a senior level.
• A security background check, rigorous technical assessment, and GitHub repositories showcasing real work are mandatory.

Key Responsibilities
Architecture & Engineering:

• Architect and build scalable, cloud-native microservices using Node.js and TypeScript.
• Design modern, secure monolithic backend systems where domain cohesion is appropriate.
• Apply Domain-Driven Design (DDD), Clean Architecture, Hexagonal Architecture, CQRS, and Event-Driven patterns.
• Implement high-performance services using async/await, streams, workers, clustering, and event loops.

Backend Frameworks & Services:
Expert-level experience in at least:

• Express.js
• NestJS
• Fastify
• Koa
• Hapi
• Serverless Framework (AWS Lambda, Azure Functions, Cloud Functions)
• GraphQL (Apollo, Yoga, Mercurius)

Cloud, DevOps & Infrastructure:

• Build, deploy, and operate Node.js applications on AWS, Azure, or GCP.
• Design and maintain CI/CD pipelines, Docker-based workflows, and Kubernetes deployments.
• Implement observability: logging, metrics, tracing, distributed monitoring, and incident response.

Database & Storage

• Hands-on work with SQL & NoSQL systems:
• PostgreSQL, MySQL, MongoDB, DynamoDB, Redis, Cassandra, Elasticsearch.
• Build event-driven data flows using Kafka, RabbitMQ, NATS, SQS, Pub/Sub, or similar.
• Design transaction-safe workflows, caching strategies, and scalable data architecture.

Security & Compliance:

• Build secure APIs and enterprise applications following OWASP, PCI-DSS, HIPAA, ISO 27001, or industry equivalents.
• Implement OAuth2, JWT, RBAC, secrets management, encryption, rate limiting, throttling, and zero-trust patterns.
• Participate in — and pass — the required security and background check.

Teaching, Leadership & Collaboration:

• Mentor engineering teams through code reviews, architecture sessions, and live technical workshops.
• Teach internal learners or trainees as needed.
• Work on live client projects, deliver demos, create engineering documentation, and support PoCs.

Required Experience

• 10+ years of backend engineering experience.
• Expertise in Node.js 10 → 22, modern JavaScript (ES6+), and TypeScript.
• Proven delivery of cloud-native microservices and distributed systems at enterprise scale.
• Strong experience delivering solutions in FinTech, HealthTech, Logistics, and Blockchain.
• DevOps experience with AWS/Azure/GCP.
• Strong SQL & NoSQL database experience.
• Ability to teach and mentor at a high level.
• Must pass security background checks.
• Must pass a rigorous technical assessment.

Why Join KloudOpp Limited?

• 100% Remote Work — collaborate globally
• Build mission-critical enterprise systems across major industries
• Work on live client projects with real-world impact
• Opportunity to teach, mentor, and shape engineering culture
• Fast-track to Principal Architect and Distinguished Engineer career paths.