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

About your role:
You will join Fiserv to help advance enterprise AI capabilities that support our clients and regulated product lines. You will design, deploy, and maintain LLM-driven services and supporting infrastructure, partnering with product, data, and risk teams to deliver reliable, compliant AI solutions. The role focuses on lifecycle management, evaluation, and production-grade integration of models and retrieval systems.

What you’ll do:

• Deploy, version, and manage LLMs, adapters, and fine-tuned variants through a centralized model registry and CI/CD pipelines.
• Design and automate pipelines for training, validation, canary releases, rollbacks, and continuous fine-tuning loops.
• Build evaluation frameworks for task accuracy, safety, bias, and hallucination detection; run offline and online evaluations including human-in-the-loop workflows.
• Implement telemetry, drift detection, and performance dashboards for models and embeddings.
• Partner with data engineers to maintain knowledge graph and vector store infrastructure; develop ingestion, ontology update, and embedding refresh pipelines with domain isolation.
• Manage lightweight fine-tuning (LoRA/PEFT), curate/preprocess datasets, and track model performance deltas while maintaining compliance guardrails.
• Collaborate with product managers, compliance, security, and risk teams to define evaluation benchmarks and ensure responsible AI practices.
• Provide technical guidance, SDKs, and documentation for developers integrating LLMs into products.

Experience you’ll need to have:

• 10+ years of experience in Python development and LLM frameworks (Hugging Face, LangChain, LlamaIndex, PEFT/LoRA).
• 8+ years of experience in cloud platforms and container orchestration (Azure, AWS, GCP, Kubernetes/Openshift, Docker).
• 8+ years of experience in model lifecycle management and MLOps tooling (model registries, ML CI/CD, Terraform/Helm integration).
• 6+ years of experience in knowledge graphs and vector search technologies (Neo4j, Amazon Neptune, Weaviate, Pinecone, FAISS).
• 6+ years of experience in database design and data modeling for large-scale AI datasets (PostgreSQL, Snowflake, MongoDB).
• 6+ years of experience in infrastructure-as-code and CI/CD tooling (Terraform, Helm, Gitlab, GitHub Actions, Jenkins).

Experience that would be great to have:

• Prior experience in enterprise AI governance, compliance, safety, and data privacy frameworks.
• Direct with evaluation and observability platforms (LangSmith, Weights & Biases, PromptFoo, TruEra).
• Experience working in regulated industries (finance, insurance, healthcare).
• Background implementing continuous retraining/fine-tuning loops and model performance rollback strategies.
• Exposure to multi-tenant systems design and role-based access controls (RBAC) for model and data isolation.

How you’ll work:

• 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 experience helps you with your overall onboarding experience and leads to stronger productivity.
• This role requires the use of a computer and audio equipment.

Sponsorship:

• 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.

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Salary Range:

These pay ranges apply to employees in Maryland. Pay ranges for employees in other states may differ. Certain Positions are Commissions eligible.

It is unlawful to discriminate against a prospective employee due to the individual's status as a veteran.

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, 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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