10x Java Developer/AI Engineer

What You’ll Do

• High-Velocity MVP Delivery: Move rapidly from design concepts to writing production-ready code.
• Ship fully realized, resilient enterprise applications with speed and autonomy.
• AI-Assisted Engineering: Seamlessly embed GenAI assistants into daily workflows to drastically accelerate code writing, refactoring, test generation, and deep debugging.
• LLM & AI Application Building: Design, implement, and deploy application layers that integrate LLMs, retrieval-augmented generation (RAG) pipelines, and intelligent agentic workflows.
• Enterprise Java Engineering: Architect and write clean, maintainable, and high-performance Java code capable of processing concurrent, enterprise-scale workloads.
• CI/CD & Cloud Automation: Build and manage automated pipelines to package, test, and deploy applications continuously to cloud ecosystems.
• Architecture & Database Integration: Model secure, low-latency relational and non-relational database layers optimized for rapid application execution.
• Performance Tuning & Diagnostics: Conduct deep-dive profiling, memory leak detection, and technical troubleshooting on high-throughput backend services.
• Experience you’ll need to have: 8-10+ years in professional software engineering, with a strong focus on core backend Java platforms.
• Execution : A proven track record of shipping actual production-scale products, moving rapidly past localized sandboxes or basic code prototypes.
• Automation & Testing : Expert proficiency in writing automated unit, integration, and performance tests (e.g., JUnit, Mockito, Testcontainers).
• Mindset : An exceptional builder mindset focused on hyper-efficiency, continuous tooling experimentation, and engineering velocity.
• Advanced, hands-on engineering using Java 17+ or Java 21+ features (e.g., Virtual Threads, Pattern Matching).
• Deep expertise with Spring Boot, Quarkus, or Micronaut frameworks for building cloud-native microservices.
• Developer Velocity : Demonstrated mastery using GenAI developer assistants (e.g., GitHub Copilot, Claude Code, etc.) to achieve "10x" development, documentation, and unit test coverage.
• LLM Engineering : Hands-on integration with LLM APIs (OpenAI, Anthropic, or Amazon Bedrock) and vector databases.
• AI Frameworks: Building RAG and agent patterns using orchestration toolkits like Spring AI.
• Data Layers : Practical experience with PostgreSQL, NoSQL stores, and connection optimization.
• Streaming/Messaging : Experience with high-throughput message brokers like Apache Kafka or AWS SQS/SNS.
• Deployment : Familiarity with Docker, Kubernetes, and major cloud environments preferably AWS.
• Bachelor’s degree in Computer Science, Information Technology, Information Systems, or a related field (or equivalent industry experience).
• Experience that would be great to have: Experience in fintech/payments domains.
• Important information about this role: This role is on-site Monday through Friday.
• Fiserv considers in-person collaboration to be an essential part of this role as in-person office experiences help you with your overall onboarding experience and leads to stronger productivity.
• You must currently possess valid and unrestricted U.S. work authorization to be considered for this role.
• Individuals with temporary visas including, but not limited to, F-1 (OPT, CPT, STEM), H-1B, H-2, or TN, or any candidate requiring sponsorship, now or in the future, will not be considered for this role.
• This is a full-time, direct-hire position, and no contract options for unsolicited agency submissions will be considered.
• All offers of employment are contingent on standard background checks.
• Fiserv and certain of its affiliated companies are federal, state, and/or local government contractors.
• Should this position support a Federal Government contract, now or in the future, the successful candidate will be subject to a background check conducted by the U.S.
• Government to determine eligibility and suitability for federal contract employment for public trust or sensitive positions.
• Positions that support state and/or local contracts also may require additional background checks to determine eligibility and suitability. #LI-MK1 Salary Range $110,000.00 - $186,000.00 These pay ranges apply to employees in New Jersey and New York.
• Pay ranges for employees in other states may differ.
• It is unlawful to discriminate against a prospective employee due to the individual's status as a veteran.
• For incentive eligible associates, the successful candidate is eligible for an annual incentive opportunity which may be delivered as a mix of cash bonus and equity awards in the Company’s sole discretion.
• Thank you for considering employment with Fiserv.
• Please: Apply using your legal name Complete the step-by-step profile and attach your resume (either is acceptable, both are preferable).
• 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
• 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.
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• Any communications from a Fiserv representative will come from a legitimate Fiserv email address.