Remote AWS Data Integration Engineer (Event-Driven)

HeadHR; Kraków; Hybrid; PLN 220,000 - 300,000; Part time

Job summary

HeadHR in Kraków seeks an experienced integration engineer to join a 3-month project focused on modernizing an existing ODS platform. You will design and implement AWS-native, near-real-time, event-driven integrations, migrating from batch-based and Heroku-origin patterns.

You will build APIs and data flows using REST/JSON, and work with EventBridge, SQS, SNS, Lambda, API Gateway, S3 and CloudWatch. The role involves data contracts, transformations, retries, and migration support to AWS across

Qualifications

• 6+ years of experience in software/data integration engineering.
• Strong hands-on experience with AWS.
• Development experience in one of: Node.js, .NET, Java, Python, or similar.
• Strong knowledge of REST APIs, JSON, SQL, and event-driven architecture.

Responsibilities

• Design and develop integration solutions based on AWS and event-driven architecture.
• Build APIs and data flows using REST/JSON.
• Work with EventBridge, SQS, SNS, Lambda, API Gateway, S3 and CloudWatch.
• Implement data contracts, schema validation, versioning, and data transformations.
• Build mechanisms for retry, DLQ, idempotency, error handling, and replay.
• Integrate data from systems such as Oracle, SQL Server, PostgreSQL, Salesforce, and ServiceNow.
• Support migration of existing integrations from ODI, MuleSoft, and Heroku to AWS.
• Develop unit and integration tests and support performance testing.
• Participate in deployments, production cutovers, troubleshooting, and post-production support.
• Collaborate with the Principal Architect and other teams to define reusable enterprise integration patterns.

Skills

6+ years experience

AWS

Node.js

Java

Python

REST APIs

JSON

SQL

EventBridge

SQS/SNS

Lambda

API Gateway

S3

CloudWatch

IAM/KMS

CI/CD

Git

Troubleshooting

Oracle

SQL Server

PostgreSQL

Salesforce

ServiceNow

Job description

HeadHR in Kraków seeks an experienced integration engineer to join a 3-month project focused on modernizing an existing ODS platform. You will design and implement AWS-native, near-real-time, event-driven integrations, migrating from batch-based and Heroku-origin patterns.

You will build APIs and data flows using REST/JSON, and work with EventBridge, SQS, SNS, Lambda, API Gateway, S3 and CloudWatch. The role involves data contracts, transformations, retries, and migration support to AWS across