Fiserv
Senior Software Engineer - Integrated Payment Experience (IPX)
Sunnyvale, California · Senior
Sponsorship not specified$140k-$210kDetected 1 day ago
JavaKotlinAndroidSpringBackend DevelopmentFull-Stack DevelopmentGitCI/CDGitHub ActionsJenkinsRESTComplianceCommunicationCollaboration
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odds of building a lasting career here
57Sponsors, lottery-bound
Cap-exempt (no lottery)0
Sponsors this role75
Entry-level history0
PERM / green-card track0
Lottery odds (Level IV)94
Fits your clock70
Sponsors, but it's cap-subject — you still face the weighted lottery (~61% per draw at Level IV). Good if you win; have a cap-exempt backup on your list.
Lottery odds assume a STEM candidate.
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About the role
- Fiserv is a global leader in financial technology, and our Clover platform empowers millions of merchants worldwide to accept payments and manage their business operations.
- The Integrated Payment Experience (IPX) team builds and maintains the core software ecosystem powering these transactions-owning a portfolio of 20+ native Android applications, public SDKs, and integration microservices deployed across Clover POS terminals.
- As a Senior Software Engineer, you will work in a hybrid full-stack capacity (predominantly focused (~80%) on native Android development with ~20% backend Java/microservices contribution) to bridge POS hardware, merchant applications, and 3rd-party integrators by building resilient client architectures, defining robust client-to-server API contracts, and enforcing strict payment security standards across our global device fleet.
Responsibilities
- Architect, modularize, and maintain a portfolio of 20+ native Android applications using Kotlin, Jetpack, Coroutines, and Clean Architecture (~80% focus).
- Build, document, and support public-facing Clover SDKs and APIs that empower 3rd-party developers to build seamless payment applications on our platform.
- Design, build, and support lightweight Java backend microservices, gateways, or integration middleware (~20% focus) that connect mobile endpoints to server-side payment infrastructure.
- Develop custom native applications running directly on Clover Android hardware while building resilient semi-integrated (SEMI) solutions to connect external software endpoints.
- Partner closely with server and backend engineering teams to define, optimize, and consume robust RESTful API contracts for end-to-end transaction flows.
- Own end-to-end quality, fleet stability, and release operations for multi-app deployments across a massive network of Clover devices.
- Demonstrated experience developing, maintaining, or modularizing multi-app Android codebases, client-facing SDKs, or developer libraries.
- Hands-on experience building and integrating RESTful APIs and Java backend microservices, with a clear understanding of client-server architecture principles.
Requirements
- Bachelor's degree in Computer Science, Software Engineering, or equivalent professional experience.
- 5+ years of professional software engineering experience, primarily focused on native Android development using Kotlin, alongside hands-on backend development in Java.
- Hands-on experience developing native apps or SEMI integrations for Clover POS hardware using Clover SDKs, Clover Connector, or REST Pay API (or experience with Verifone, Ingenico, Square, PAX).
- Proficiency with Java / Spring Boot for building backend integration microservices or middleware to support mobile APIs.
- Proficiency in Android debugging tools (ADB, Android Studio, memory profiling) and secure Android OS patterns (KeyStore, hardware-backed encryption).
- Experience designing intuitive API contracts, SDK developer documentation, or integration guides for external developers.
- Experience managing CI/CD automation pipelines for application fleets (Fastlane, Bitrise, GitHub Actions, Jenkins).
- Hands-on experience with hardware/peripheral integrations over USB, Serial, or Bluetooth protocols on Android.
Compensation
- $140,000.00 - $210,000.00
- These pay ranges apply to employees in Sunnyvale, California.
- Pay ranges for employees in other states may differ.
- 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.
Benefits
- No-cost mental health support through Employee Assistance Programs
- Medical, dental, vision, life, and disability insurance options available from day one
- Retirement planning and discounted shares with the Employee Stock Purchase Plan
- Tuition assistance and reimbursement program
- Paid parental, caregiver, and military leave
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.
This listing is sourced directly from Fiserv's careers page and normalized into a canonical job model.