Strong fit for experienced engineers who lead support efforts and integrate AI into cloud-native systems, with a background in payments or fintech and a preference for on-call responsibilities.
Derived from job-description analysis by Serendipath's career intelligence engine.
Original posting from ACI Worldwide
Senior Software Engineer — Support Lead
About the team
The Connetic Account-to-Account organization owns high-value payment processing, instant payment processing and batch payment processing end to end. We move billions of transactions across ACI's network, and this department is directly accountable for the reliability, speed, and quality of that experience. As Senior Software Engineer – Support Lead you will be actively participating in and leading Level 3 Support activities on a cloud-native infrastructure, with AI-assisted engineering practices.
What You'll Own
Deep troubleshooting and root cause analysis for complex issues, such as intermittent failures, performance degradation, data corruption and integration faultsConfirm whether an issue is a defect, a configuration problem or a usage problem. Provide or implement fixes, scripts and data corrections where applicableTriage, fix and backport security vulnerabilities (including third-party dependency upgrades) within agreed remediation SLAsJoin Priority1/2 (P1/P2) triage incidents, drive the technical diagnosis, and help restore serviceProvide clear technical updates to customers, account managers and leadership during incidents, and take part in post-incident reviewsFeed real-world issues back into the roadmap, and push for fixes that reduce ticket volumeManage the issues backlog, team capacity, support schedule and on-call rotationUse AI-assisted engineering tools daily — troubleshooting, code generation, review, test authoring, and incident triageMentor mid-level and junior engineers, and share what you learn through documentation, demos, or informal coachingExplain complex technical trade-offs clearly to engineers and non-technical stakeholders alike, and influence decisions with data and rationale
Our Tech Stack
Deep expertise in this exact stack isn’t a hard requirement – strong engineers from adjacent stacks are welcome to apply.
Java — expert-level proficiency: JVM internals, concurrency, performance tuning, Spring Boot / Spring ecosystem, and modern Java (17+) features Angular — expert-level proficiency: modern Angular (17+) including micro-frontends, performance tuning and secure front-end practices (dependency vulnerability remediation, version upgrades)Gen AI / LLM tooling — hands-on experience with LLM APIs (OpenAI, Anthropic, or equivalent), prompt/workflow design, RAG patterns, and AI coding assistants (Copilot, Cursor, Claude Code, or equivalent) as part of daily developmentLow-latency systems — demonstrated experience designing and optimizing transaction processing, payments, or equivalent high-throughput distributed systems Microservices & APIs — RESTful and event-driven service design; experience with API versioning, backward compatibility, and contract testing Containers & Kubernetes — familiarity with containerizing applications and running them on Kubernetes (AKS, EKS, GKE, or OpenShift) Cloud platforms — Azure; working familiarity AWS a strong plus and/or
What You Bring
You don't need to check every box below to apply — if most of this resonates, we want to hear from you.
5+ years of professional software engineering experience, with a track record of owning complex features or systems from design through productionHands-on experience in production support, ideally at Level 3 — troubleshooting live incidents, performing root cause analysis, delivering code fixes (including security vulnerability remediation), and working under SLA and on-call pressureExperience diagnosing production issues using logs, metrics and tracing tools, and working with ticketing/incident systemsStrong critical thinking — you frame decisions clearly, weigh explicit trade-offs rather than defaulting to the familiar option, and adjust your thinking as new information comes in, especially under pressure or ambiguityStrong systems thinking — you reason about how components interact and where failure or complexity will emerge upstream and downstream, not just within the piece you're touchingSolid grounding in SaaS and cloud-native fundamentals — the underlying principles, not just familiarity with the tools, even where our own infrastructure is still catching up to themGenuine curiosity — you ask why, you're not satisfied with 'it works,' and you bring creative approaches to problems that don't have an obvious answer yetWorking knowledge of secure coding practices, threat modeling, and access-control designComfortable using AI-assisted development tools as a daily practiceSolid grounding in distributed systems, event-driven architecture, and microservices at meaningful scaleStrong technical communication — able to mentor other engineers and influence direction without needing formal authority
Bonus Points
Experience in payments, fintech, banking, or another regulated industryExperience with real-time, low-latency, or high-availability systemsExperience embedding AI/ML models directly into customer-facing product features (prompt/workflow design, RAG, evaluation pipelines)Exposure to internal platform or infrastructure engineering workA track record of technical writing, conference talks, or open-source contributionExperience conducting technical interviews or contributing to hiring
What We Offer
Technically challenging work on a platform processing mission-critical payment transactions for financial institutions worldwideBe part of a truly global product development organization — real centers of engineering excellence spread across multiple regions, organized around product families and technical capabilities rather than geography for its own sake, with engineers everywhere shaping our core products and technical directionA cloud-native, automation-first engineering culture that treats quality, security, and developer experience as competitive advantages, not compliance checkboxesReal career growth — ACI actively develops engineers into senior technical leaders and engineering managers; your trajectory here is yours to defineAn AI-native team that embraces modern tooling and gives engineers real latitude to experiment, improve, and leadCompetitive compensation and benefitsHybrid model — typically 2–3 days in-office across ACI's global hub locationsL3 production support rotation, shared across the team – the escalation path for incidents that couldn’t be resolved by earlier support tiersSome domestic and international travel (5–10%) as needed for customer or cross-team engagements
Equal Opportunity & Compliance
ACI Worldwide is an Equal Opportunity Employer; all qualified applicants are considered without regard to race, color, religion, gender, gender identity, sexual orientation, national origin, genetics, disability, age, or veteran status. This role requires adherence to ACI's Code of Business Conduct and Ethics, and — given access to sensitive payment data — compliance with applicable security and data-protection standards (PCI-DSS, SOC 2, GDPR, CCPA). Comprehensive background screening is required. Responsibilities may evolve with business needs.
Req ID 20139
LI-GI1
LI-Hybrid
Source: ACI Worldwide careers