Description
Experience: 3-8 years
Location: [TVM / COK / CHENNAI / BLR]
Role Overview
We are looking for a highly skilled Flink Java Developer with 3–8 years of experience in building real-time streaming applications at scale. The ideal candidate will have strong hands-on expertise in Apache Flink (Java), solid working experience with Kafka, and knowledge of streaming data design patterns. Familiarity with Flink PaaS solutions (e.g., Decodable, Confluent Cloud, Kinesis Data Analytics) is a strong plus.
Key Responsibilities
Design and develop real-time stream processing applications using Apache Flink and Java.
Implement stateful stream processing (keyed state, operator state, checkpointing, savepoints).
Apply event-time semantics, watermarking, and windowing for accurate streaming computations.
Optimize Flink job performance (parallelism, operator chaining, backpressure handling, checkpointing strategy).
Integrate with Kafka (mandatory) for ingestion and delivery pipelines.
Tune serialization/deserialization (Kryo, Avro, Protobuf, POJO) for high throughput and efficiency.




Implement Async I/O patterns in Flink to integrate with external systems (e.g., MongoDB/NoSQL).
Connect pipelines to NoSQL databases (MongoDB preferred) for persistence and lookups.
Deploy and monitor applications in cloud-native environments; exposure to Flink PaaS solutions is advantageous.
Ensure high availability, fault tolerance, and data consistency across distributed systems.
Required Skills & Experience
3–8 years of hands-on Apache Flink experience with Java.
Robust expertise in Kafka (producer, consumer, partitioning, offset management).
Knowledge of Flink state management (operator/keyed state, RocksDB backend).
Experience with event-time processing, watermarks, windowing, and broadcast state.
Solid Java development skills including concurrency, performance tuning, and memory management.
Good to Have
Experience with Flink PaaS solutions (Decodable, Confluent Cloud, Kinesis Analytics, etc.

📌 Flink Developer (India)
🏢 IBS Software
📍 India