Strong Middle Java Engineer

Intellias; Poland; On-site; PLN 240,000 - 360,000; Full time

Job summary

Intellias is partnering with a Fortune 100 Midwest-based industrial manufacturer to modernize cloud services and data products powering a global network of dealers, enterprise customers, and internal business units.

You will design, develop, and maintain scalable Java 21, Spring Boot 3.x microservices, and build event-driven data pipelines on AWS, Snowflake, and PostgreSQL. Join a distributed team and own features end-to-end, with testing and CI/CD practices enhancing reliability.

Qualifications

• 5+ years of experience designing, developing, deploying, and maintaining backend services in production using Java 21 and Spring Boot 3.x
• 2+ years of hands-on experience with AWS core services and cloud-native development
• Strong experience with event-driven distributed systems using Kafka, AWS Kinesis, or equivalent
• Strong experience with microservices, MVC, and event-driven architectures
• Strong experience with JPA / Hibernate and database design (PostgreSQL, DynamoDB)
• Solid test automation experience using JUnit and Cucumber
• Hands-on experience with GitHub Actions and CI/CD
• Excellent English communication and ability to work in a distributed team

Responsibilities

• Design, develop, and maintain scalable Spring Boot-based microservices in a distributed architecture
• Build and operate event-driven data processing pipelines for ingestion, transformation, and enrichment of streaming data
• Develop and maintain advanced SQL queries and data workflows to support business requirements
• Collaborate with data engineering, analytics, and stakeholders to solve data challenges
• Contribute to data warehousing and analytics initiatives, including Snowflake-based solutions
• Develop and maintain robust APIs for internal and external consumers
• Work with AWS cloud services to design reliable, scalable backend systems
• Design and optimize PostgreSQL and DynamoDB schemas for performance
• Implement and maintain automated testing strategies (unit and integration)
• Contribute to and maintain GitHub Actions pipelines
• Ensure observability through monitoring and logging
• Take ownership of features end-to-end from design to production support

Skills

Java

Spring Boot

Microservices

Event-driven

SQL

English

Agile

Tools

Docker

AWS

Kafka

JPA/Hibernate

PostgreSQL

DynamoDB

GitHub Actions

JUnit

Cucumber

Job description

Intellias is partnering with a Fortune 100, Midwest-based industrial manufacturer to modernize and expand a suite of cloud-based services and data products used by a global network of dealers, enterprise customers, and internal business units. Our cross-functional teams deliver scalable APIs, event-driven services, and analytics pipelines that power quoting, ordering, asset telemetry, diagnostics, and lifecycle support for heavy equipment in the field.

What you will do

• Design, develop, and maintain scalable Spring Boot-based microservices in a distributed architecture
• Build and operate event-driven data processing pipelines, including ingestion, transformation, and enrichment of streaming data
• Work extensively with complex datasets, focusing on data analysis, transformation, validation, and optimization
• Develop and maintain advanced SQL queries and data workflows to support business and platform requirements
• Collaborate closely with data engineering, analytics, and business stakeholders to understand and solve complex data challenges
• Contribute to data warehousing and analytics initiatives, including Snowflake-based solutions where applicable
• Develop and maintain robust APIs for internal and external consumers
• Work with AWS cloud services to design and support reliable, scalable backend systems
• Design, optimize, and maintain PostgreSQL and DynamoDB schemas, ensuring performance and data integrity
• Implement and maintain automated testing strategies (unit and integration)
• Contribute to and maintain GitHub Actions pipelines
• Ensure system reliability through monitoring, logging, and observability best practices
• Collaborate effectively in a distributed team, communicating progress, risks, and dependencies
• Take ownership of features end-to-end, from design through deployment and production support

What you need for this

Mandatory

• 5+ years of experience designing, developing, deploying, and maintaining backend services and distributed systems in production using Java 21, Spring Boot 3.x, Docker
• 2+ years of hands-on experience with AWS core services and cloud-native application development.
• Strong experience designing and operating event-driven distributed systems using technologies such as Kafka, AWS Kinesis, or equivalent messaging platforms.
• Strong experience with microservices, MVC, and event-driven architectures
• Strong experience with JPA / Hibernate
• Strong database design skills with PostgreSQL (advanced SQL) and DynamoDB, including schema design, optimization, and performance tuning
• Solid test automation experience using JUnit and Cucumber
• Hands-on experience with GitHub Actions and/or similar CI/CD tools
• Strong ownership and self-management in a fast-paced Agile environment, with the ability to independently deliver end-to-end solutions, resolve blockers, and communicate effectively in English
• Ability to provide 6 hours overlap with US Central Time (CT) on business days (till 2 pm CT latest
• On-call support: Willingness to provide off-hours or weekend production support when required

Nice to Have

• Advanced SQL expertise, including designing, writing, optimizing, and troubleshooting complex analytical queries against large and complex datasets.
• Experience processing, enriching, or analyzing event and telemetry data at scale.
• Experience with AWS CloudFormation.
• Experience with jOOQ and Flyway.
• Experience with BigQuery or Databricks.
• Experience with Spring Cloud.
• Experience working with geospatial data (PostGIS).
• Experience supporting large-scale data platforms, reporting systems, or business analytics products.
• Experience working with distributed data processing or data pipeline technologies.

What it's like to work at Intellias

At Intellias, where technology takes center stage, people always come before processes. By creating a comfortable atmosphere in our team, we empower individuals to unlock their true potential and achieve extraordinary results. That's why we offer a range of benefits that support your well-being and charge your professional growth.

We are committed to fostering equity, diversity, and inclusion as an equal opportunity employer.

All applicants will be considered for employment without discrimination based on race, color, religion, age, gender, nationality, disability, sexual orientation, gender identity or expression, veteran status, or any other characteristic protected by applicable law.

We welcome and celebrate the uniqueness of every individual. Join Intellias for a career where your perspectives and contributions are vital to our shared success.