Senior Software Development Engineer (Amazon)

N-iX; Kraków; Remote; PLN 180,000 - 300,000; Full time

Benefits offered by this job

Flexible working format

Salary and compensation package

Education reimbursement

Mentorship program

Tech talks and trainings

Team buildings

Job summary

N-iX is seeking a Software Development Engineer for its EBMS Real-Time Data Platform team in Kraków. You will design, build, and maintain real-time BMS data pipelines ingesting telemetry from thousands of building management systems.

You will own the full lifecycle of stream-processing apps from design to production with emphasis on uptime, observability, and fault tolerance. The role requires strong Java skills, hands-on Flink or equivalent experience, and AWS expertise (Kinesis, DynamoDB, S3,

Qualifications

• Bachelor’s or Master’s degree in Computer Science, Software Engineering, or equivalent field.
• Strong proficiency in Java with production-level experience.
• Hands-on experience with stream-processing frameworks (Flink, Spark Streaming, Kafka Streams).
• Experience with AWS: Kinesis Data Streams, DynamoDB, S3, Athena, CloudWatch, IAM.
• Experience delivering 99%+ uptime and fault-tolerant distributed systems.
• Solid understanding of distributed systems concepts including exactly-once semantics and checkpointing.
• Proficiency with Infrastructure-as-Code (CDK/CloudFormation/Terraform).

Responsibilities

• Design, develop, and optimize Apache Flink stream-processing applications for real-time data ingestion and enrichment.
• Build and maintain Amazon Kinesis Data Streams infrastructure including shard management and auto-scaling policies.
• Implement comprehensive observability with CloudWatch dashboards, tracing, logging, and tiered alerting.
• Troubleshoot and resolve production issues across the ingestion-to-serving stack (Kinesis, Flink, DynamoDB, S3, Athena).
• Develop and maintain Infrastructure-as-Code for pipeline components to ensure repeatable deployments.
• Implement data quality monitoring including schema drift detection and null-rate checks across sites.

Skills

Java

Apache Flink

Amazon Kinesis

Distributed systems

Observability

On-call readiness

Education

Bachelor’s or Master’s in CS/Software Eng

Tools

Apache Flink

Kinesis Data Streams

DynamoDB

S3

Athena

CloudWatch

IAM

CDK/CloudFormation/Terraform

Job description

Job Description

Our EBMS Real-Time Data Platform team is looking for a Software Development Engineer with hands-on experience in Apache Flink, Amazon Kinesis, and Java to build and maintain our real-time BMS data pipeline that ingests telemetry from thousands of global building management systems. The engineer will be responsible for the full lifecycle of stream-processing applications; from design and development through deployment and production operations with a focus on delivering 99% system uptime, comprehensive observability, and fault-tolerant architecture.

Primary Responsibilities

• Design, develop, and optimize Apache Flink stream-processing applications for real-time BMS data ingestion, transformation, and enrichment.
• Build and maintain Amazon Kinesis Data Streams infrastructure including shard management, auto-scaling policies, and dead-letter queues.
• Implement comprehensive observability: CloudWatch/Grafana dashboards, distributed tracing, structured logging, and tiered alerting (P1/P2/P3) across the full pipeline.
• Troubleshoot and resolve production issues across the ingestion-to-serving stack (Kinesis, Flink, DynamoDB, S3, Athena).
• Develop and maintain Infrastructure-as-Code (CDK/CloudFormation) for all pipeline components, ensuring repeatable and auditable deployments.
• Implement data quality monitoring including record count validation, schema drift detection, and null-rate anomaly detection across all sites.

Job Qualifications

The ideal candidate has strong software engineering fundamentals and a passion for building reliable, high-throughput distributed systems. They must be detail-oriented, comfortable operating in an on-call environment, and able to communicate effectively with both technical and non-technical stakeholders.

Required

• Bachelor’s or Master’s degree in Computer Science, Software Engineering, or equivalent technical field.
• Strong proficiency in Java (primary) with production-level experience building and deploying applications.
• Hands-on experience with Apache Flink or equivalent stream-processing framework (Spark Streaming, Kafka Streams).
• Experience with Amazon Kinesis Data Streams or similar distributed messaging/streaming platform.
• Demonstrated experience building and operating systems with 99%+ uptime SLAs.
• Solid understanding of distributed systems concepts: fault tolerance, exactly-once semantics, checkpointing, backpressure management.
• Experience with AWS services: DynamoDB, S3, Athena, CloudWatch, IAM.
• Proficiency with Infrastructure-as-Code (CDK, CloudFormation, or Terraform).

Preferred

• Experience with MQTT, Haystack protocol, or Niagara N4 (building automation / IoT).
• Familiarity with Apache Avro, AWS Glue Schema Registry, or similar schema management tools.
• Experience with Grafana, CloudWatch Logs Insights, or distributed tracing frameworks.
• Knowledge of chaos engineering practices and tools.
• Prior experience with BMS (Building Management System) or IoT data pipelines.
• Python proficiency for scripting, data analysis, and tooling.

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits
• not applicable for freelancers