Sr. Full Stack Engineer

Clover; Berkeley Heights (NJ); On-site; USD 128,000 - 216,000; Full time

Job summary

Fiserv is seeking a Senior Full Stack Engineer to join Clover’s Growth and Merchant Self-Service team. You will architect and ship features on the Clover Dashboard, balancing frontend and backend work while mentoring others and steering technical roadmaps.

You’ll own services end to end, optimize data pipelines, and collaborate across time zones with agile teams to deliver scalable, reliable software for 700k+ merchants globally.

Qualifications

• Degree in Computer Science or Engineering or related field.
• 5+ years of professional software engineering experience building full-stack web apps.
• Strong backend with Java and Spring Boot; frontend with React/TypeScript.
• Relational databases experience and CI/CD pipelines in production.

Responsibilities

• Architect, develop, and maintain responsive web apps with React/TypeScript.
• Build containerized microservices and high-throughput REST APIs with Java/Spring Boot.
• Design messaging pipelines using pub/sub systems for real-time data sync.
• Own services end-to-end from development to deployment and monitoring.
• Mentor engineers and participate in code/architecture reviews.

Skills

React

TypeScript

Java

Spring Boot

CI/CD

MySQL

Kafka

Pub/Sub

Education

Degree in Computer Science or Engineering

Tools

Docker

Kubernetes

Cloud monitoring tools

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

Sr. Full Stack Engineer

What does a successful Senior Fullstack Engineer do at Clover?

In this role, you will be an experienced engineer helping to improve and expand our platform and product. You will accomplish this by maintaining and adding new features, investigating/resolving bugs, creating helpful documentation, and re-architecting our system to achieve better scalability and availability.

As part of the Growth and Merchant Self-Service team, you will be responsible for building applications that define the user experience on the Clover Dashboard. Partnering with Infrastructure, Product, and Design teams, you will be pragmatic in balancing priorities and enjoy working in an iterative model where specifications are constantly evolving. You will own your services from development through deployment, mentor junior talent, and help drive the technical roadmap for products that support over 700k merchants worldwide.

What You Will Do

• Architect, develop, and maintain responsive web applications using React, TypeScript, and modern CSS/HTML.
• Design, build, and maintain containerized microservices and high-throughput REST APIs using Java and Spring Boot.
• Design asynchronous workflows and distributed messaging pipelines using pub/sub messaging systems (Google pub/sub, Kafka etc.) to handle real-time data synchronization, merchant event delivery, and decoupled background processing.
• Evaluate and recommend modern frameworks, technologies, and tools, and execute processes.
• Identify technical requirements in product meetings and assist the business team with realistic project planning and feature development; translate product requirements into functional, maintainable, extensible software that is in-line with company objectives
• Take end-to-end ownership of services through testing, CI/CD deployment, production monitoring, distributed tracing, and regular on-call rotation.
• Partner with Infrastructure teams to design relational schemas (MySQL), optimize data pipelines, and re-architect existing systems for high availability, fault tolerance, and low latency.
• Collaborate with cross-functional, distributed agile teams with the flexibility to work across time zones.
• Conduct code and architecture reviews, champion distributed system best practices, and mentor engineers across the team.
• Coach and mentor engineers to deliver efficient, extensible solutions and improve their technical and leadership skills.
• Advocate engineering best practices with active engagement leveraging agile methods and a CI/CD DevOps mindset.
• Triage bugs and the impact on product or service operations and quality with a focus on customer centricity
• Prioritize and multi-task between projects with the ability to handle changing priorities.
• Excellent team player with strong empathy and critical thinking skills.

What You Will Need To Have

• Degree in Computer Science or Engineering field or related experience
• 5+ years of professional software engineering experience building full-stack web applications.
• Strong backend engineering background with Java and the Spring Boot ecosystem.
• Proven frontend expertise using React, TypeScript, and modern state management.
• Solid experience with relational databases, data modeling, and query optimization (MySQL preferred).
• Hands-on experience owning services in production, including CI/CD pipelines, containerized environments, and cloud monitoring tools.

What Would Be Great To Have

• Experience designing event streams, schema management, and message ordering/deduplication patterns at scale.
• Familiarity with Kotlin and Python
• Previous experience in the payments or fintech industry
• Background in re-architecting systems for high availability and scalability

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.

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 [e-mail]. 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.