Sr Software Engineer

ACI Worldwide

5h•Hybrid

About The Position

Powering the world’s payments ecosystem ACI 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. As a Sr Software Engineer in Norcross, GA or Omaha, NE, you will join a diverse, passionate team, dedicated to powering the world’s payments ecosystem! JOB PURPOSE The Senior Software Engineer designs and architects complex software features and systems. This senior technical position leads technical discussions, drives engineering best practices, mentors engineers, and makes critical architectural decisions that impact product quality and team productivity.

Requirements

Bachelor's degree in Computer Science, Software Engineering, or related field; Master's preferred
Equivalent experience (7+ years) may substitute for degree
5-8 years of professional software development experience
Proven track record of leading technical projects and delivering complex systems
Experience mentoring engineers and influencing technical direction
Expert proficiency in multiple programming languages and frameworks
Deep understanding of software architecture patterns and design principles
Experience with distributed systems, microservices, and event-driven architectures
Strong system design and scalability expertise
Knowledge of application runtime environments and underlying infrastructure platforms
Performance optimization and debugging experience at scale
Talented use of AI tools and integration of AI/ML capabilities into applications
Programming Languages: Java, J2EE, and Python
Frameworks & Architecture: Microservices, Spring Boot
API Development: REST API
Testing & Tools: Postman
Databases: Oracle & PostgreSQL
CI/CD Tools: Jenkins, and Azure Pipelines
Containerization & Orchestration: Docker and Kubernetes
Cloud Platforms: AWS (EC2, SR, and Lambda)
Work Management Tools: Azure DevOps, and Confluence
AI Tools: Claude and Microsoft Copilot
Excellent technical communication and presentation skills
Strong leadership and mentorship abilities
Strategic thinking and problem-solving capabilities
Cross-functional collaboration and influence

Nice To Haves

Payments, financial services, or regulated industry experience preferred
Frontend Technologies: Angular
Monitoring & Observability: Prometheus and Grafana
Messaging & Streaming: RabbitMQ
Experience with large-scale distributed systems and high-traffic applications
Conference speaking or technical blog with significant following
Advanced certifications in relevant technologies
Experience with security best practices and secure software development

Responsibilities

Design and architect complex features and systems with scalability in mind
Lead technical discussions and make architectural decisions for team projects
Drive best practices for code quality, testing, and software craftsmanship
Conduct design reviews and provide technical guidance to team members
Champion adoption of AI-powered tools and best practices across the team
Develop high-quality, maintainable code for complex features
Optimize application performance and resolve scalability bottlenecks
Lead incident response and troubleshooting for critical production issues
Implement comprehensive testing strategies including unit, integration, and end-to-end tests
Mentor junior and mid-level engineers on technical skills and best practices
Collaborate with product, design, and engineering teams on product strategy
Conduct technical interviews and participate in hiring decisions
Share knowledge through documentation, tech talks, and code reviews