Backend Data Java Developer

Backend Data Java Developer - Contract - Vienna, VA/Hybrid - $65.00 - $70.47/hr.

The final salary or hourly wage, as applicable, paid to each candidate/applicant for this position is ultimately dependent on a variety of factors, including, but not limited to, the candidate's/applicant's qualifications, skills, and level of experience as well as the geographical location of the position.

Applicants must be legally authorized to work in the United States. Sponsorship not available.

Our client is seeking a Backend Data Java Developer in Vienna, VA/Hybrid.

Role Description

We are looking for a mid to senior Java developer with strong data engineering experience, responsible for developing and maintaining back-end services supporting our mobile banking apps and online banking channels. The ideal candidate will have deep experience working with data pipelines, data-centric services, and cloud-based data processing, in addition to strong Java engineering capabilities. The developer will collaborate closely with analysts, QA testers, and other Back-End and Front-End engineers across multiple infrastructure layers. A commitment to collaborative problem solving, data driven design, and creating high quality, scalable products is essential.

Design, build, and maintain data focused back-end services, APIs, and data workflows
Develop and optimize data pipelines, data ingestion processes, and transformation logic
Ensure the performance, quality, and responsiveness of services and data systems
Collaborate with teams to define, model, and implement new data-driven features
Identify bottlenecks and optimize data throughput and system performance
Troubleshoot complex, distributed data flows across interconnected applications
Maintain code quality, organization, automation, and strong data governance practices

Skills & Requirements

Java & Back-End Engineering
Hands-on experience with Java 17+
Deep understanding of Web Applications, Web Services, RESTful design
Experience with Spring/Spring Boot and microservice architectures
Familiarity with AI-powered development tools (e.g., GitHub Copilot)
Strong understanding of networking fundamentals
Experience with source control (SVN or Git) and typical CI/CD workflows
Experience building cloud applications (Microsoft Azure strongly preferred)
Experience working in Agile environments
Data Engineering Expertise (New Requirement)
Strong professional experience as a Data Engineer or in data heavy Java development
Experience building/maintaining data pipelines, data ingestion, ETL/ELT, or streaming data solutions
Strong proficiency in SQL, data modeling, relational and/or NoSQL databases
Experience connecting services to data platforms and optimizing high volume data flows
Understanding of distributed data systems, data scalability, and performance tuning
Experience with cloud native data services (Azure Data Factory, Azure Databricks, Event Hub, Cosmos DB, Blob Storage, etc.) preferred
Strong troubleshooting skills across data lineage, transformation logic, and service-to-data dependencies
Awareness of sustainable coding practices and energy-efficient system design
Demonstrated ability to learn new technologies quickly
Advanced knowledge of Banking/Financial industry standards and practices
Strong data engineering experience: Building and maintaining data pipelines (ETL/ELT), Data ingestion, transformation, and modeling; Working with SQL, relational & NoSQL databases; Performance tuning for high volume / distributed data systems; Experience with cloud-based data tools (Azure preferred)
Solid Java backend development skills: Java 17+, Building backend services/APIs, Spring / Spring Boot, Microservices architecture experience, CI/CD, debugging, performance optimization
Cloud engineering expertise (Azure strongly preferred): Deploying, maintaining, or integrating with cloud applications; Familiarity with Azure Data Factory, Event Hub, Databricks, Cosmos DB, or similar a plus
Data connected application development: Integrating applications with data platforms, Troubleshooting data flow issues across interconnected systems
General engineering competencies: Familiarity with AI powered dev tools (GitHub Copilot, etc.); Strong understanding of networks and system interactions; Git/SVN version control; Experience working in Agile
Financial services domain knowledge

Benefits/Other Compensation

This position is a contract/temporary role where Hays offers you the opportunity to enroll in full medical benefits, dental benefits, vision benefits, 401K and Life Insurance ($20,000 benefit).

Why Hays?

You will be working with a professional recruiter who has intimate knowledge of the industry and market trends. Your Hays recruiter will lead you through a thorough screening process in order to understand your skills, experience, needs, and drivers. You will also get support on resume writing, interview tips, and career planning, so when there's a position you really want, you're fully prepared to get it.

Nervous about an upcoming interview? Unsure how to write a new resume?

Visit the Hays Career Advice section to learn top tips to help you stand out from the crowd when job hunting.

Hays is committed to building a thriving culture of diversity that embraces people with different backgrounds, perspectives, and experiences. We believe that the more inclusive we are, the better we serve our candidates, clients, and employees. We are an equal employment opportunity employer, and we comply with all applicable laws prohibiting discrimination based on race, color, creed, sex (including pregnancy, sexual orientation, or gender identity), age, national origin or ancestry, physical or mental disability, veteran status, marital status, genetic information, HIV-positive status, as well as any other characteristic protected by federal, state, or local law. One of Hays' guiding principles is 'do the right thing'.
We also believe that actions speak louder than words.
In that regard, we train our staff on ensuring inclusivity throughout the entire recruitment process and counsel our clients on these principles. If you have any questions about Hays or any of our processes, please contact us.

In accordance with applicable federal, state, and local law protecting qualified individuals with known disabilities, Hays will attempt to reasonably accommodate those individuals unless doing so would create an undue hardship on the company. Any qualified applicant or consultant with a disability who requires an accommodation in order to perform the essential functions of the job should call or text .

Drug testing may be required; please contact a recruiter for more information.

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