What does an AWS Kinesis developer do?
An AWS Kinesis developer builds real-time data streaming applications that ingest and process large volumes of records as they arrive. This role focuses on writing producer code to send data into streams and consumer code to read from shards in parallel. The developer manages the infrastructure configuration for stream capacity and monitors application health through metrics.
- Builds producer applications using the Amazon Web Services SDK or Kinesis Producer Library to write records with specific partition keys. This logic routes incoming data to the correct shards within a stream based on your application requirements. The developer formats payloads and handles retries to guarantee data reaches the stream without loss during high-traffic periods.
- Codes consumer applications with the Kinesis Client Library to read and process records from multiple shards simultaneously. This work involves implementing record processors that transform, aggregate, or filter data as it flows through the system. The developer configures checkpointing state in DynamoDB so the application tracks its progress and recovers automatically after any interruption.
- Configures stream settings such as retention periods and shard counts to match the expected data volume and throughput needs. The developer sets up monitoring dashboards in CloudWatch to track iterator age and throttling errors across the streaming pipeline. This operational oversight ensures the system scales correctly and identifies bottlenecks before they impact downstream data consumers.
How to hire an AWS Kinesis developer on Upwork
Step 1: Post a job
Define your real-time data streaming requirements clearly to attract qualified candidates. Use the Job Post Generator powered by Uma™, Upwork's Mindful AI to draft a precise description. Describe your needs in a few sentences and Uma drafts a job post for the role. You can write a new post, update a saved draft, or reuse an existing post.
- Specify whether you need producer applications that write records using the Kinesis Producer Library or consumer apps that process shards with the Kinesis Client Library.
- List required tools such as the AWS SDK for Java, DynamoDB for checkpointing state, and CloudWatch for monitoring stream metrics.
- Detail expected deliverables like configuration for stream retention modes and record processing logic for transformations or aggregations.
Step 2: Evaluate candidates
Look for portfolios that demonstrate experience building scalable streaming architectures. Uma can run instant video interviews and build shortlists with side-by-side comparisons to help you assess technical fit quickly.
- Verify experience choosing partition keys to route records to specific shards based on application logic.
- Check for examples of managing Kinesis streams and configuring producers with correct stream identifiers.
- Confirm ability to troubleshoot Kinesis applications using metrics and checkpointing state to recover from failures.
Step 3: Interview your top choices
Discuss specific challenges related to shard distribution and record processing latency. Interviews can be scheduled and conducted within Upwork Messages with an immediate transcript and summary after each one.
- Ask how they handle backpressure when consumer throughput lags behind producer input rates.
- Request examples of implementing parallel processing using the Kinesis Client Library across multiple shards.
- Inquire about their strategy for maintaining exactly-once or at-least-once processing semantics in stateful applications.
Step 4: Agree on scope and begin work
Set clear milestones for stream creation, code deployment, and monitoring setup. Use Upwork Messages and the contract workroom for communication and project management, plus identity verification, payment protection, hourly tracking, and project funds for security.
- Define milestones for delivering producer code that writes payloads with specific partition keys.
- Agree on deliverables for consumer applications that read from shards and update checkpoints in DynamoDB.
- Establish criteria for operational setup including CloudWatch alarms for iterator age and throttled requests.
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