{"id":1405725,"url":"https://alion.io/job/fiserv-senior-ios-engineer-payments-hardware-integrations","title":"Senior iOS Engineer – Payments & Hardware Integrations","company":{"id":2459,"name":"Fiserv","domain":"fiserv.com","url":"https://alion.io/company/fiserv","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"A","score":95,"open_postings":92,"ghost_share":0.022,"stale_share":0.043,"repost_share":0.174,"time_to_fill_p50_days":22,"computed_at":"2026-10-15T05:46:00Z"}},"role":"Mobile","role_family":"Mobile","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Sunnyvale, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":140000,"max":210000,"currency":"USD","period":"year","gross":null,"usd_annual":210000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"Matter","optional":false},{"name":"Objective-C","optional":false},{"name":"PCI DSS","optional":false},{"name":"Swift","optional":false},{"name":"C++","optional":true}],"status":"live","first_seen_at":"2026-09-28T17:41:12Z","employer_posted_date":"2026-09-28","last_verified_at":"2026-10-15T03:01:57Z","board_verified":true,"closed_at":null,"days_open":17,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":17},"description":"Calling all innovators - find your future at Fiserv.\nWe'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.\nJob Title\nSenior iOS Engineer - Payments & Hardware IntegrationsAbout your role:\nClover, a Fiserv company, is a global leader in point-of-sale platforms powering millions of small businesses worldwide with integrated hardware, software, and payment solutions. We are seeking a Senior iOS Engineer with deep expertise in mobile payments, payment reader hardware integration, and core transaction flows. Based in Sunnyvale, you will serve as the hands-on technical lead driving hardware certification, reader SDK integrations, and alignment with our Core Payments infrastructure. You will work closely with on-site hardware labs, certification teams, and cross-functional engineering groups to ensure fast, secure, and compliant mobile payment experiences.\nWhat you’ll do:\nDesign, build, and maintain native iOS framework components for Bluetooth Low Energy (BLE) and EMV card readers, including Go3 reader hardware and next-generation terminal integrations.\nLead end-to-end device and software payment certification efforts (e.g., PCI-DSS, PCI-PTS, EMVCo L1/L2/L3) in close collaboration with on-site lab teams.\nInterface directly with Core Payments engineering to integrate transaction processing, tokenization, refunds, and cryptographic protocols on iOS.\nUtilize on-site hardware lab access in Sunnyvale to conduct real-time hardware debugging, reader firmware testing, and performance optimization.\nServe as the US-based Subject Matter Expert (SME) for iOS payments, bridging communication between local infrastructure teams and global development groups.\nResponsibilities listed are not intended to be all-inclusive and may be modified as necessary.\nExperience you’ll need to have:\niOS Expertise: 5+ years of hands-on experience building complex, production-grade native iOS applications using Swift and Objective-C.\nDomain Knowledge (Payments): Proven track record working with payment processors, EMV kernels, ISO 8583 / point-of-sale protocols, or card-present payment architectures.\nHardware/SDK Integration: Hands-on experience integrating external Bluetooth Low Energy (BLE), MFi (Made for iPhone), or USB accessories/readers into iOS apps.\nCertification Standards: Experience navigating payment industry standards (PCI-DSS, PCI-PTS, EMVCo) and executing device certification cycles.\nDebugging & Architecture: Deep understanding of secure key management, cryptographic protocols (DUKPT, AES, RSA), multithreading, and low-level protocol debugging.\nExperience that would be great to have:\nPrior experience with POS (Point of Sale) platforms or reader hardware (e.g., Clover, Square, Ingenico, Verifone).\nExperience writing or maintaining shared native C/C++ libraries wrapped for iOS.\nHow you’ll work:\nThis 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.\nThis role requires use of a computer and audio equipment.\nSponsorship:\nYou 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.\nBenefits at Fiserv:\nFuel Your Life program to support your physical, financial, social, and emotional well-being\nPaid holidays and generous time away policies\nNo-cost mental health support through Employee Assistance Programs\nLiving Proof program to recognize your peers’ extra effort with points redeemable for rewards\nEight Employee Resource Groups to foster a collaborative culture and expand your network\n·Unparalleled professional growth with training, development, and internal mobility opportunities\nMedical, dental, vision, life, and disability insurance options available from day one\nRetirement planning and discounted shares with the Employee Stock Purchase Plan\nTuition assistance and reimbursement program\nPaid parental, caregiver, and military leave\nSalary Range\n$140,000.00 - $210,000.00These pay ranges apply to employees in Sunnyvale, California. Pay ranges for employees in other states may differ.\nIt is unlawful to discriminate against a prospective employee due to the individual's status as a veteran.\nFor 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:\nApply using your legal name\nComplete the step-by-step profile and attach your resume (either is acceptable, both are preferable).\nOur commitment to Equal Opportunity:\nFiserv 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.\nIf you have a disability and require a reasonable accommodation in completing a job application or otherwise participating in the overall hiring process, please contact . 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.\nNote to agencies:\nFiserv does not accept resume submissions from agencies outside of existing agreements. Pleasedo not send resumes to Fiserv associates. Fiserv is not responsible for any fees associated with unsolicited resume submissions.\nWarning about fake job posts:\nPlease 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.","description_format":"text","description_chars":6629,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Retirement plans"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Cards & Card Issuing","Financial Software & Embedded Finance","Payment Processing & Gateways","Smartphones"],"lifecycle":[{"event":"open","at":"2026-09-28T17:41:12Z"}],"visa":[],"liveness":{"score":59,"band":"ok","label":"Likely open","p_open":1,"p_active":0.79,"p_room":0.75,"age_days":16,"expected_fill_days":22,"reasons":["conf:2","velocity","win:late","comp:brand"],"computed_at":"2026-10-15T05:46:00Z"},"pay":{"stated_usd_annual":210000,"is_top_pay":true},"html_url":"https://alion.io/job/fiserv-senior-ios-engineer-payments-hardware-integrations","json_url":"https://alion.io/job/fiserv-senior-ios-engineer-payments-hardware-integrations.json","meta":{"generated_at":"2026-10-15T21:33:57Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":32794,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-16T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":2459},"rest":"https://alion.io/mcp/rest/get_company?id=2459"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ffiserv-senior-ios-engineer-payments-hardware-integrations"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Ffiserv-senior-ios-engineer-payments-hardware-integrations"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Ffiserv-senior-ios-engineer-payments-hardware-integrations"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/fiserv-senior-ios-engineer-payments-hardware-integrations\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ffiserv-senior-ios-engineer-payments-hardware-integrations"}]}