Senior Software Engineer

ApTask is a leading global provider of workforce solutions and talent acquisition services. They are seeking a highly skilled Senior Software Engineer with expertise in Apache Flink, Apache Kafka, and Spring Boot to design and implement real-time data processing solutions for their SaaS platform.

Responsibilities:

• Design, develop, and maintain real-time streaming applications using Apache Flink (Java API)
• Build and optimize Kafka-based event-driven architectures for high-throughput, low-latency data pipelines
• Develop microservices and REST APIs using Spring Boot for integration with SaaS components
• Ensure scalability, reliability, and fault tolerance in distributed systems
• Collaborate with product and DevOps teams to deploy and monitor solutions in cloud environments (AWS, GCP, or Azure)
• Implement observability (metrics, logging, tracing) for streaming applications
• Participate in code reviews, architecture discussions, and performance tuning

Requirements:

• Strong proficiency in Java (including functional programming concepts)
• Hands-on experience with Apache Flink (DataStream API, state management, checkpointing)
• Deep understanding of Apache Kafka (topics, partitions, consumer groups, schema registry)
• Experience building Spring Boot microservices and integrating with streaming pipelines
• Proven track record of deploying SaaS solutions in production environments
• Familiarity with CI/CD pipelines, Docker, and Kubernetes
• Knowledge of data serialization formats (Avro, Protobuf, JSON)
• Strong grasp of distributed systems, event-driven architecture, and stream processing concepts
• Experience with cloud-native architectures (AWS/GCP/Azure)
• Hands on Deployed Environment experience with Flink
• Experience with SQL, Kafka Streams, or other stream processing frameworks
• Exposure to monitoring tools (Prometheus, Grafana) and security best practices
• Background in SaaS product development and multi-tenant architectures