Senior Java Technical Lead - RESTful API, Spring Boot

Job Summary

1.APIs (SOAP and REST)

• Understanding of SOAP (WSDL, XML, envelopes, WS-Security) and REST (HTTP methods, status codes, JSON, statelessness).
• Ability to choose between SOAP and REST for a given use case.
• Experience with API testing and debugging tools such as Postman and SoapUI.

2. Caching Concepts

• Knowing what a cache is: a fast, temporary data store that holds frequently used data close to the application.
• Knowing why caching is needed: to avoid repeated expensive calls to databases or downstream services, and to handle high traffic.
• Knowing the value caching adds:
  • Faster response times
  • Lower load on databases and third-party APIs
  • Better scalability and throughput
  • Lower infrastructure cost
  • Better resilience when dependencies are slow or unavailable
• Familiarity with cache patterns (cache-aside, write-through, write-behind), TTL, invalidation and eviction (LRU, LFU), and the trade-off of stale data.

3. Redis

• Core data structures: strings, hashes, lists, sets and sorted sets.
• Expiry and TTL, persistence (RDB and AOF), replication and clustering.
• Using Redis from application code, and troubleshooting memory and performance issues.

4. AWS

• EC2: launching and managing instances, security groups, scaling.
• ECS: container deployment, task definitions, services and clusters.
• S3: buckets, object storage, access policies, lifecycle rules.
• CloudWatch: metrics, logs, alarms and dashboards.

5. Splunk

• Searching and analysing logs with SPL (Splunk Processing Language).
• Creating dashboards, reports and alerts.
• Using Splunk to trace errors and performance issues across services.

6. Database

• Strong SQL knowledge with the ability to perform data analysis, troubleshooting, root cause investigation, and data validation.
• Experience querying relational databases (e.g., Microsoft SQL Server, Oracle, PostgreSQL) to support application issues and release validation.
• Ability to develop SQL queries for data verification, reporting, and production support activities.

Nice to Have

• Experience with Java, Spring or a similar backend stack.
• CI/CD and Docker experience.
• Understanding of API security (OAuth, JWT, TLS).

Key Responsibilities

Key Responsibilities

• Design, develop, consume and troubleshoot SOAP and REST APIs.
• Implement caching strategies to cut latency, reduce backend and database load, and improve scalability and availability.
• Configure, use and tune Redis for caching (key design, TTL and eviction policies, invalidation).
• Deploy and operate applications on AWS (EC2, ECS, S3, CloudWatch).
• Monitor application health, logs and performance. Build searches, dashboards and alerts in Splunk and CloudWatch.
• Diagnose production issues and perform root-cause analysis.

Required Skills & Knowledge

Skill Requirements

Other Requirements