Sr Software Engineer
ACI Worldwide4 months ago
Bengaluru, IndiaSenior
Responsibilities
- Design, implement, and optimize Java services for real-time payments, authorization, clearing, and settlement workflows.
- Apply JVM concurrency, garbage collection, lock-free data structures, asynchronous I/O, benchmarking, profiling, and latency regression analysis to meet performance budgets.
- Build and operate container-native applications on Kubernetes across AKS, OpenShift, EKS, and GKE, including manifests, packaging, resource controls, health probes, and rolling deployments.
- Contribute to CI/CD pipelines, GitOps workflows, observability, on-call rotations, runbooks, deployment guides, and architecture decision records.
- Develop comprehensive unit, integration, contract, and end-to-end tests and integrate Testkube-orchestrated suites into quality gates.
- Implement secure-by-design code and compliance controls for PCI-DSS, SOC2, audit logging, secrets management, and threat remediation.
- Use AI tools across coding, testing, documentation, defect analysis, and performance diagnostics while validating generated output and protecting sensitive data.
- Read and interpret COBOL programs and translate their business logic into behaviorally equivalent Java services.
- Provide L3 production support, diagnose complex failures using telemetry and thread or heap dumps, and deliver root-cause analyses and preventive fixes.
Requirements
- 8+ years of professional software engineering experience, including substantial production work on high-volume, low-latency systems.
- Expert-level Java proficiency, including JVM internals, concurrency, performance tuning, Spring Boot, the Spring ecosystem, and modern Java 17+ features.
- Demonstrated experience with transaction processing, payments, or equivalent high-throughput distributed systems.
- Experience designing microservices and APIs with versioning, backward compatibility, event-driven services, and contract testing.
- Hands-on experience containerizing Java applications and running them on Kubernetes, including AKS, EKS, GKE, or OpenShift.
- Azure experience is required as the primary cloud platform; AWS or Google Cloud Infrastructure familiarity is a strong plus.
- Experience with Jenkins, Gradle, container image builds, automated quality gates, and pipeline definitions.
- Strong unit, integration, and end-to-end testing practices with JUnit 5, Mockito, Testcontainers, or equivalent tools.
- Knowledge of secure coding, OWASP Top 10, input validation, secrets management, and regulated engineering environments.
- Experience with structured logging, metrics using Micrometer or Prometheus, and distributed tracing using OpenTelemetry or an equivalent.
- Production experience with PostgreSQL or an equivalent relational database, including schema migration, query optimization, and connection pooling.
- Active use of AI coding tools such as Copilot, Claude, or Cursor with disciplined validation practices.
- Preferred qualifications include banking or payments experience, ISO 8583 or ISO 20022 knowledge, Drools or comparable BRMS experience, NATS or equivalent messaging, multi-cloud deployment, COBOL literacy, Carvel tooling, regulated-environment experience, AI/ML feature delivery, and technical mentorship.
Benefits
- Technically challenging work on a mission-critical banking platform serving global financial institutions.
- Cloud-native, automation-first engineering culture focused on quality, security, and developer experience.
- Career growth opportunities toward senior technical leadership and engineering management.
- AI-forward team with latitude to experiment, improve, and lead.
- Competitive compensation and benefits package.
- Hybrid work in Bangalore, with on-site designated days and remote eligibility on other days based on team and business needs.
Tech Stack
Apache KafkaAWSAzureCOBOLGradleHelmJavaJenkinsKubernetesOpenShiftPostgreSQLPrometheusRabbitMQSpring Boot
Categories
About ACI Worldwide
ACI Worldwide builds payment processing and fraud prevention software for banks, merchants, and billers, delivered as on-premise and cloud services. Its portfolio spans real-time payments, card and merchant acquiring, bill payment, and risk management. Founded in 1975 and publicly traded on NASDAQ (ACIW), the company is headquartered in Elkhorn, Nebraska and serves financial institutions and retailers globally.