Mandatory Technical Skills

1. Backend Development
- Strong hands-on experience in
Java
or
Kotlin
- Experience designing and developing backend services and microservices
- Solid understanding of:
- Object-Oriented Programming
- Multithreading
- Collections
- Exception Handling
- Dependency Injection

2. REST API Development

Candidate should have hands-on experience in:
- Designing REST APIs
- REST principles
- HTTP methods
- Status codes
- Authentication mechanisms
- API versioning
- Error handling
- API debugging

3. WebSocket Knowledge

Candidates must understand:
- How WebSocket connections work
- WebSocket lifecycle
- Handshake process
- Persistent connections
- Difference between REST and WebSocket communication
- Connection management
- Message flow
- Reconnection strategies
- Debugging WebSocket connectivity issues

4. Distributed Systems

Good understanding of:
- Distributed architectures
- Service-to-service communication
- Scalability
- High availability
- Event-driven architecture
- Messaging concepts
- Fault tolerance

5. AWS (Hands-on)





Experience with AWS services such as:
- ECS/EKS
- EC2
- IAM
- VPC
- CloudWatch
- S3
- Load Balancers
- Auto Scaling
- Secrets Management

Candidate should be comfortable deploying and troubleshooting cloud-based applications.

6. DevOps / CI-CD

Hands-on experience with:
- GitLab CI/CD
- AWS deployment pipelines
- Docker
- Kubernetes
- Infrastructure automation
- Build pipelines
- Deployment pipelines
- Release management

7. Troubleshooting & Debugging

Must be comfortable investigating production issues involving:
- Backend services
- WebSocket communication
- Network connectivity
- Protocol-level issues
- Performance bottlenecks
- Distributed systems

8. Soft Skills
- Ability to work autonomously
- Comfortable making technical decisions
- Strong analytical and problem-solving skills
- Think outside the box
- Able to work in a fast-paced environment
- Good communication skills

Experience Requirement
- s5 to 12 year

📌 Cloud Devops (Pune)
🏢 Worldline Global Services
📍 Pune