{"id":1239279,"url":"https://alion.io/job/aci-worldwide-senior-platform-engineer","title":"Senior Platform Engineer","company":{"id":20985,"name":"ACI Worldwide","domain":"aciworldwide.com","url":"https://alion.io/company/aci-worldwide","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Oracle","truth_index":{"grade":"A","score":85,"open_postings":13,"ghost_share":0,"stale_share":0.615,"repost_share":0,"time_to_fill_p50_days":54,"computed_at":"2026-09-30T05:45:00Z"}},"role":"DevOps","role_family":"DevOps","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Limerick, Ireland"],"countries":["IE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":72000,"max_usd":144000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":10},"experience_years_min":8,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"FinOps","optional":false},{"name":"Kubernetes","optional":false},{"name":"Linux","optional":false},{"name":"OpenShift","optional":false},{"name":"Platform Engineering","optional":false},{"name":"Service Mesh","optional":false},{"name":"Terraform","optional":false}],"status":"live","first_seen_at":"2026-09-25T14:13:27Z","employer_posted_date":"2026-09-25","last_verified_at":"2026-09-30T03:50:38Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"Powering the world’s payments ecosystem\nACI powers the payments ecosystem - globally, and you power ACI. You’ll innovate, collaborate, and grow - in an energetic technology culture with decades of proven success. ACIers - in all roles and levels - are truly your colleagues and many are your friends. Our size and reach allow you to see the global impact of your work. You are visible, your talents are valued, and you are empowered to shape the future of payments.\nAs a Senior Platform Engineer in Limerick, you will join a diverse, passionate team, dedicated to powering the world’s payments ecosystem!\nThis purpose of this Senior Platform Engineer is:\nACI's Internal Developer Platform is the foundation every product and delivery team builds on - cloud-native infrastructure spanning Kubernetes/OpenShift and multiple cloud providers, CI/CD, observability, and the golden paths that let engineers ship payment software quickly and safely. As Sr Platform Engineer, you'll own a platform domain end-to-end - architecture, reliability, and roadmap - and be the technical authority other engineers turn to within that domain.\nA typical day at ACI for a Senior Platform Engineer is:\nOwn a platform domain end to end (e.g., CI/CD, observability, or cloud infrastructure) - architecture, reliability, and roadmap for that domain\nArchitect resilient, multi-tenant platform services within your domain, balancing portability against deep cloud-provider leverage\nLead the design and implementation of golden-path tooling in your domain, and measure its real impact on developer productivity, not just its existence\nSet reliability targets and error budgets for the services in your domain, and lead incident response and blameless postmortems when things break\nArchitect AI-ready infrastructure within your domain - GPU/inference capacity, model-serving, or vector infrastructure - as a first-class capability\nChampion AI-assisted engineering practices within your domain, building AI-assisted tooling into the golden paths you own\nDesign and enforce security and compliance controls (policy-as-code, tenant isolation) within your domain for a regulated payments environment\nMentor platform engineers and associates, and lead design reviews for your domain\nRepresent your domain's technical perspective to other platform teams and stakeholders, and resolve conflicts through technical reasoning\nDrive systematic reduction of toil and defects in your domain through automation\nPerform other duties as assigned\nUnderstand and adhere to all corporate policies to include but not limited to the ACI Code of Business Conduct and Ethics.\n\nAs a Senior Platform Engineer at ACI, you will work with the below Tech Stack:\nGen AI infrastructure - hands-on experience with model-serving infrastructure and vector databases within your domain\nContainer orchestration - strong, hands-on expertise with Kubernetes/OpenShift, including autoscaling and operator patterns \nInfrastructure as code - strong Terraform (or equivalent) expertise, including module design and policy-as-code enforcement \nCloud platforms - strong expertise in [primary provider]; growing fluency across [secondary providers] \nCI/CD & delivery - hands-on ownership of pipeline architecture and golden-path tooling design within your domain \nObservability - strong instrumentation and observability design within your domain \nService mesh & networking - solid experience with service mesh and platform-level network/security architecture\nGen AI infrastructure - hands-on experience with model-serving infrastructure and vector databases within your domain\n\nKnowledge, Skills and Experience needed to succeed in this role:\nBachelor’s Degree in Computer Systems, Software Engineering or a similar subject. \n8+ years experience in software engineering, DevOps, cloud engineering, or platform engineering roles, including experience owning a platform domain or major technical capability independently\nStrong critical thinking, with the ability to frame decisions clearly and evaluate technical trade-offs under pressure or ambiguity\nStrong systems thinking, with the ability to understand how a platform domain interacts with the wider platform and product ecosystem\nSolid, applied knowledge of SaaS, cloud-native architecture, Linux, networking, and distributed systems fundamentals\nHands-on experience designing and operating resilient, multi-tenant, cloud-native platform services\nStrong hands-on experience with Kubernetes or OpenShift, including production operations, scaling, and workload management\nStrong experience with Infrastructure as Code, such as Terraform or equivalent, including reusable module design and automation\nStrong experience with modern CI/CD practices, pipeline architecture, and developer enablement or golden-path tooling\nExperience designing observability capabilities using logs, metrics, dashboards, alerting, and service-health indicators\nExperience implementing security, governance, or compliance controls within an enterprise or regulated environment\nDemonstrated ability to lead technical design reviews, mentor engineers, and provide technical direction without relying on formal authority\nStrong written and verbal communication skills, with the ability to explain technical decisions to engineers and stakeholders\nExperience leading incident response, problem investigation, or post-incident reviews for production platform services\nPreferred Knowledge, Skills and Experience needed for this role:\nExperience owning the architecture, reliability, and technical roadmap for a platform domain such as CI/CD, observability, cloud infrastructure, or container platforms\nExperience designing internal developer platforms, self-service capabilities, or reusable golden paths that improve developer productivity\nAdvanced experience with Kubernetes or OpenShift features such as autoscaling, operators, admission controls, or multi-tenancy patterns\nExperience with policy-as-code, tenant isolation, DevSecOps tooling, or automated governance controls\nExperience with service mesh technologies and platform-level network or security architecture\nExperience with multiple cloud providers or designing portable cloud-platform capabilities\nExperience with FinOps practices, cloud-cost optimization, or automated consumption governance\nHands-on experience with AI-assisted engineering tools or AI-ready infrastructure such as model serving, GPU or inference capacity, or vector databases\nExperience operating platforms in payments, financial services, or another regulated industry\nExperience mentoring engineers and supporting their development into platform engineering careers\n\nCore Capabilities:\nWe seek colleagues who embody our core capabilities - these shape our culture and enable us to make a meaningful impact together:\nEnsure Accountability: holding self and others accountable to meet commitments.\n\nDrives Results: consistently achieving results, even under tough circumstances.\n\nCustomer Focus: building strong customer relationships and delivering customer-centric solutions.\n\nCultivate Innovation: creating new and better ways for the organization to be successful.\n\nCollaborates: building partnerships and working collaboratively with others.\n\nCourage: stepping up to address difficult issues, saying what needs to be said.\n\nApplicants must be currently authorized to work in Ireland on a full-time basis. This position does not offer sponsorship for employment visa status or work permit now or in the future.\nIn return for your expertise, we offer opportunities for growth, career development, and a competitive compensation and benefits package-all within an innovative and collaborative work environment.\nAre you ready to help us transform the payments ecosystem? To learn more about ACI Worldwide, visit our web site at www.aciworldwide.com Job ID (Requisition #19966)\nACI Worldwide is an AA/EEO employer in the United States, which includes providing equal opportunity for protected veterans and individuals with disabilities, and an EEO employer globally.\nImportant Notice About Recruitment Scams\nJob seekers should be aware of ongoing recruitment scams where individuals or organizations impersonate legitimate companies to offer fake job opportunities. These scams often involve requests for personal information, payments, or interviews through unofficial channels. Please be cautious and verify any communications claiming to be from our company (www.aciworldwide.com / @aciworldwide.com). The ACI Worldwide recruitment team will always follow official channels and will never request payment.","description_format":"text","description_chars":8596,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"Ireland","iso":"IE","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Financial Software & Embedded Finance","Payment Processing & Gateways"],"lifecycle":[{"event":"open","at":"2026-09-25T16:34:27Z"}],"liveness":{"score":63,"band":"ok","label":"Likely open","p_open":1,"p_active":0.632,"p_room":1,"age_days":4,"expected_fill_days":54,"reasons":["conf:1","stale_co","velocity","win:early"],"computed_at":"2026-09-30T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/aci-worldwide-senior-platform-engineer","json_url":"https://alion.io/job/aci-worldwide-senior-platform-engineer.json","meta":{"generated_at":"2026-09-30T06:54:30Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":4999,"day_limit":5000,"remaining_today":1,"minute_limit":60,"resets_at":"2026-10-01T00:00:00Z"}}}