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Java Data Engineer Jobs in Milwaukee, WI (NOW HIRING)

Big Data Engineer, Senior

Milwaukee, WI · On-site

$55 - $72.75/hr

Big Data Engineer, Senior EMPLOYER: Fiserv Solutions, LLC LOCATION: Milwaukee, WI (and various ... Java; 4 years working with data validation and quality assurance practices; 3 years building ...

Java Developer

Waukesha, WI · On-site

$51 - $66/hr

This Senior Java Developer will join the Global Service Technology team and will work on a Scrum ... data between a customer's site and the back office. Qualifications Long term or contract to hire ...

Java Developer

Milwaukee, WI · On-site

$50.25 - $65/hr

Role: Senior Java Programmer Job Type: Contract to Hire (6 months) Location: Menominee Falls ... Responsibilities may also include participation in component and data architecture design ...

Java Developer

Milwaukee, WI · On-site

$50.25 - $65/hr

Role: Senior Java Programmer Job Type: Contract to Hire (6 months) Location: Menominee Falls ... Responsibilities may also include participation in component and data architecture design ...

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Java Data Engineer information

See Milwaukee, WI salary details

$26

$59

$84

How much do java data engineer jobs pay per hour?

As of Jun 25, 2026, the average hourly pay for java data engineer in Milwaukee, WI is $59.53, according to ZipRecruiter salary data. Most workers in this role earn between $49.04 and $67.26 per hour, depending on experience, location, and employer.

What is a Java Data Engineer?

A Java Data Engineer is a technology professional who designs, develops, and maintains data processing systems using Java programming language. They work with large datasets, build data pipelines, and ensure the efficient movement, transformation, and storage of data. Java Data Engineers often collaborate with data scientists, analysts, and other engineers to support data-driven decision-making in organizations. Their expertise typically includes Java, SQL, big data technologies like Hadoop or Spark, and cloud platforms. They play a crucial role in enabling reliable and scalable data infrastructure for businesses.

What is the difference between Java Data Engineer vs Python Data Engineer?

AspectJava Data EngineerPython Data Engineer
Required CredentialsBachelor's in Computer Science, Java certificationsBachelor's in Computer Science, Python certifications
Work EnvironmentBig data platforms, Java-based toolsData analysis, scripting, Python-based tools
Employer & Industry UsageFinancial services, enterprise systemsTech startups, data science projects
Common Search & ComparisonYesYes

Java Data Engineers and Python Data Engineers often share similar roles in data processing and engineering. The main difference lies in the programming languages used: Java is common in large-scale enterprise environments, while Python is favored for data analysis and scripting. Both roles require strong programming skills, but their toolsets and typical applications differ based on industry needs.

What are the most common challenges faced by Java Data Engineers when working with large-scale data pipelines?

Java Data Engineers often encounter challenges with optimizing the performance and scalability of data pipelines, especially as data volumes grow. They must ensure data integrity and consistency while managing distributed systems and integrating with various data sources. Debugging issues in real-time data processing and maintaining efficient, fault-tolerant code are also key hurdles. Collaborating closely with data scientists, database administrators, and DevOps teams is essential to overcome these challenges and deliver reliable data solutions.

What are the key skills and qualifications needed to thrive as a Java Data Engineer, and why are they important?

To thrive as a Java Data Engineer, you need strong programming skills in Java, a solid understanding of data structures, SQL, and experience with big data frameworks, often supported by a degree in computer science or a related field. Familiarity with data processing tools like Apache Spark, Hadoop, Kafka, and experience with cloud data platforms (e.g., AWS, GCP) or relevant certifications are typically required. Analytical thinking, problem-solving ability, and effective communication are crucial soft skills for collaborating with teams and interpreting data requirements. These capabilities are essential for building reliable, scalable data solutions that support business intelligence and analytics needs.
What are popular job titles related to Java Data Engineer jobs in Milwaukee, WI? For Java Data Engineer jobs in Milwaukee, WI, the most frequently searched job titles are:
What job categories do people searching Java Data Engineer jobs in Milwaukee, WI look for? The top searched job categories for Java Data Engineer jobs in Milwaukee, WI are:
Infographic showing various Java Data Engineer job openings in Milwaukee, WI as of June 2026, with employment types broken down into 71% Full Time, and 29% Contract. Highlights an 80% In-person, and 20% Remote job distribution, with an average salary of $123,827 per year, or $59.5 per hour.
Big Data Engineer, Senior

Big Data Engineer, Senior

Fiserv, Inc.

Milwaukee, WI • On-site

$55 - $72.75/hr

Full-time

Posted 24 days ago


Fiserv rating

7.6

Company rating: 7.6 out of 10

Based on 86 frontline employees who took The Breakroom Quiz

106th of 139 rated financial services


Job description

Calling all innovators - find your future at Fiserv.
We're Fiserv, a global leader in Fintech and payments, and we move money and information in a way that moves the world. We connect financial institutions, corporations, merchants and consumers to one another millions of times a day - quickly, reliably, and securely. Any time you swipe your credit card, pay through a mobile app, or withdraw money from the bank, we're involved. If you want to make an impact on a global scale, come make a difference at Fiserv.
Job Title
Big Data Engineer, Senior
TITLE: Big Data Engineer, Senior
EMPLOYER: Fiserv Solutions, LLC
LOCATION: Milwaukee, WI (and various unanticipated locations throughout the US subject to authorization from management)
DUTIES: Design, develop, and implement data products to meet specific client requirements and business objectives. Manage the end-to-end process of data deliveries to ensure timely, accurate, and secure data transfers to clients. Provide support and maintenance for data jobs to ensure their continuous and reliable operations. Conduct rigorous product validation against functional specifications and client expectations to confirm the data product's readiness and suitability for deployment. Perform in-depth data quality analysis, identifying and resolving anomalies, inconsistencies, and errors to maintain data integrity. Work closely with developers, analysts, and client-facing teams to gather requirements, troubleshoot issues, and communicate progress on product development and data delivery status.
REQUIREMENTS: Bachelor's degree in Computer Science, Computer Engineering, Electronic Engineering or a related field and 4 years in any job title involving data analytics and data engineering experience. Prior experience must include: 4 years managing end-to-end data delivery pipelines and production support; 4 years working in SQL and with relational and columnar databases; 4 years programming in Python, Scala or Java; 4 years working with data validation and quality assurance practices; 3 years building repeatable data pipelines using ETL frameworks; 3 years working with orchestration and scheduling tools for job workflows; 3 years working with cloud data platforms and storage including Azure, AWS or GCP; 3 years working with data delivery mechanisms and secure file transfer patterns; 2 years working with version control (GIT) and CI/CD pipelines for deployment and change management; and 2 years of data analysis identifying patterns and trends in large data sets.
TRAVEL: None
TO APPLY: Apply by selecting "Apply" on this page and following prompts to attach resume and submit.
JOB CODE: VD591
#P3M
It is unlawful to discriminate against a prospective employee due to the individual's status as a veteran.
Our commitment to Equal Opportunity:
Fiserv is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, gender, gender identity, sexual orientation, age, disability, protected veteran status, or any other category protected by law.
If you have a disability and require a reasonable accommodation in completing a job application or otherwise participating in the overall hiring process, please contact AskHR.US@fiserv.com. Please note our AskHR representatives do not have visibility to your application status. Current associates who require a workplace accommodation should refer to Fiserv's Disability Accommodation Policy for additional information.
Note to agencies:
Fiserv does not accept resume submissions from agencies outside of existing agreements. Please do not send resumes to Fiserv associates. Fiserv is not responsible for any fees associated with unsolicited resume submissions.
Warning about fake job posts:
Please be aware of fraudulent job postings that are not affiliated with Fiserv. Fraudulent job postings may be used by cyber criminals to target your personally identifiable information and/or to steal money or financial information. Any communications from a Fiserv representative will come from a legitimate Fiserv email address.

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