Nothing can limit your
dreams when you are at
Zoft

Work Location : Kochi, Kerala

Job Summary

We are looking for an experienced Senior Backend Engineer to design, develop, and maintain scalable, secure, and high-performance backend applications. The ideal candidate will have strong expertise in modern Node.js technologies, cloud-native architectures, event-driven systems, and API development. Experience in healthcare technology or FHIR-based interoperability is an added advantage. You will work closely with product managers, architects, and cross-functional engineering teams to build enterprise-grade applications that are scalable, resilient, and maintainable.

Key Responsibilities

• Design and develop scalable backend services using TypeScript, Node.js (v20+), and NestJS.
• Build and maintain RESTful and WebSocket APIs for high-performance applications.
• Develop microservices and event-driven architectures using Kafka and AWS services.
• Design and optimize relational and NoSQL databases.
• Build secure authentication and authorization solutions using OAuth2/OIDC.
• Implement caching, messaging, and asynchronous processing using Redis and Kafka.
• Develop cloud-native applications leveraging AWS serverless technologies.
• Write clean, maintainable, and well-tested code following engineering best practices.
• Create comprehensive unit and integration tests using Jest.
• Collaborate with DevOps teams on CI/CD pipelines, containerization, and infrastructure automation.
• Participate in code reviews, technical design discussions, and architecture decisions.
• Troubleshoot production issues and continuously improve system reliability and performance.

Must-Have Technical Skills

Backend Technologies,

TypeScript, Node.js 20+, NestJS, Express, Databases, PostgreSQL, Query builders/ORMs (Kysely or Prisma), MongoDB, Redis,

Messaging & Integration

Kafka, REST APIs, WebSocket APIs

Cloud & Infrastructure

AWS Lambda, Amazon S3 Amazon SES, API Gateway, EventBridge, CloudFormation

Security

OAuth2, OpenID Connect (OIDC), Keycloak or Amazon Cognito

Development Tools

Jest, Docker, Git

Nice-to-Have Skills

• FastifyFHIR and Medblocks
• Healthcare domain experience
• MJML or Handlebars templating
• Firebase Cloud Messaging (FCM)
• Apple Push Notification Service (APNs)
• Turborepo
• pnpm monorepos
• Infrastructure as Code (CloudFormation)
• Multi-tenant SaaS architecture
• Event-driven architecture
• Outbox pattern

Preferred Qualifications

• Bachelor or Master degree in Computer Science, Engineering, or a related field.
• 5+ years of professional backend development experience.
• Strong understanding of distributed systems and microservice architectures.
• Experience building secure, scalable cloud-native applications.
• Familiarity with Agile/Scrum development methodologies.
• Excellent problem-solving and communication skills.

What We Offer

• Opportunity to work on modern cloud-native applications.
• Exposure to scalable enterprise and healthcare technology platforms.
• Collaborative engineering culture with opportunities to influence architecture and technology decisions.
• Continuous learning and professional growth.
• Competitive compensation and benefits.