Senior MongoDB Database Engineer

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

Senior MongoDB Database Engineer

About your role:

As a Senior MongoDB Database Engineer, you will be responsible for designing, optimizing, and operating high-throughput, low-latency MongoDB platforms supporting mission-critical workloads at enterprise scale. You will bring hands-on experience with multi-terabyte to petabyte-scale clusters and architect resilient, high-performing sharded environments under heavy production load.

What you'll do:

• Lead end-to-end MongoDB performance optimization including query tuning, execution plan analysis, and index design

• Design and implement scalable data models optimized for high read/write throughput and low latency

• Architect and operate large-scale sharded clusters using range-based and hash-based strategies

• Optimize shard key selection, chunk distribution, and balancing to prevent hotspots and improve performance

• Manage cross-shard query efficiency and reduce scatter-gather impact across distributed workloads

• Support large production environments (hundreds of nodes, multi-region deployments) with a focus on availability and resilience

• Implement and maintain high availability, disaster recovery, and failover strategies across regions

• Automate database operations, monitoring, and maintenance tasks using Python or shell scripting

• Partner with application teams on data modeling, query design, and performance best practices

• Participate in 24x7 on call Support

Experience you'll need to have:

• 6+ years of experience as a MongoDB Engineer or DBA in large-scale production environments

• 6 + years of experience in MongoDB sharding, replication internals, and distributed architecture design

• 2+ years of experience with Python, Powershell, RedHat Linux, Mac OS, IIS, and Active Directory

• 2+ years with cloud technologies such as Google Cloud and Azure

• Bachelor’s degree in computer science, or a relevant field, or an equivalent combination of education, work, or military experience

Experience that would be great to have:

• Prior experience in the financial services industry

• Experience with database migration projects

• Prior exposure to microservices architectures, distributed systems, or streaming platforms

• Knowledge of complex technologies, tools, methodologies, the enterprise architecture, and emerging technologies in the industry

• Understanding of the relationship between information technology, business practices, consumer markets and industry and be able to apply that knowledge to support the needs of critical systems and projects

How you’ll work:

• Fiserv emphasizes in-person collaboration to help you grow your career while shaping the future of fintech, this role is on-site Monday through Friday

• This role requires being on-call during non-standard and/or overnight hours on a rotational basis

• This role requires flexibility to work overtime that includes weekends and holidays

• This role requires use of a computer and audio equipment

Travel:

• Approximately 0-5% travel off-site or to other office locations is expected

Salary Range

$128,000.00 - $216,000.00

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, 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 View email address on click.appcast.io . 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.