Senior Backend Software Engineer (Python / AWS)

New

DarizeBackend software

Workplace type: remote; Locations: Gdańsk, Bernarda Chrzanowskiego 11, Gdańsk, Country code: PLContractSenior

Salary160 - 190 PLN per hour

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Job Details

Languages: Languages: en B2, pl B2; very good spoken and written English
Experience: Minimum 5 years of experience in backend development in Python or Scala; minimum 5 years of practical experience with AWS.
Required Skills: AWSPostgreSQLPythonDynamoDBGitRESTful APIsScalaAWS LambdaCloudFormation

Have at least 5 years of backend development experience in Python or Scala.
Have at least 5 years of practical AWS experience.
Have experience with AWS Lambda, API Gateway, SQS, SNS, EventBridge, EventBridge Pipes, DynamoDB, and S3.
Have practical experience with relational databases, particularly PostgreSQL.
Understand NoSQL databases such as DynamoDB, including data modeling and efficient queries.
Have experience designing and implementing RESTful APIs.
Know software engineering practices including unit and integration testing, code review, and Git.
Have experience with Infrastructure as Code using CloudFormation.
Have very good spoken and written English.
Experience with Scala is an advantage; Kotlin or Java experience is also valued.
Knowledge of observability tools such as CloudWatch or X-Ray is an advantage.
Experience with HL IT products or the container transport industry is an advantage.

Design and develop backend services using serverless and event-driven AWS architecture.
Analyze existing AWS architecture and improve cost, performance, scalability, and resilience.
Apply the AWS Well-Architected Framework when planning and implementing improvements.
Optimize event-stream processing for throughput, latency, ordering, and retry mechanisms.
Design reliable dead-letter queue (DLQ), replay, and idempotent event-processing mechanisms.
Optimize PostgreSQL data models, queries, indexes, partitioning, and resource usage.
Improve observability through metrics, tracing, and alerting.
Define SLOs for critical services.
Maintain code quality through unit, integration, and performance testing.

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