Principal Software Engineer

ACI Worldwide

. Lead the architecture, design and development of software solutions across backend and frontend components .

Posted 10/27/2026full-timeTimisoara • RomaniaLeadWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Java and Angular development, with a strong focus on software architecture, non-functional requirements, and CI/CD pipeline implementation. Proven ability to lead technical solutions, mentor teams, and ensure system reliability and security in enterprise environments.

Highest-signal resume keywords

Java Backend DevelopmentAngular Frontend DevelopmentCI/CD Pipeline ImplementationCloud Platforms (Microsoft Azure)Software Architecture Design

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

JavaAngularObject-Oriented DesignSoftware Design PatternsRelational Databases (Oracle, MS SQL)Git/GitHubCI/CD Best PracticesInfrastructure as Code (Terraform)Containers (Docker, Kubernetes)Ethical AI Principles

Soft Skills

Technical LeadershipMentoringStakeholder ManagementCommunicationCollaboration

Tools & Technologies

GitDockerKubernetesMicrosoft AzureTerraform

Industry Keywords

Enterprise SystemsAgile/ScrumAI-Assisted DevelopmentData PrivacyFraud Detection

Tech Stack

Tools & technologies

AngularAzureCloudDockerJavaKubernetesOracleSQLTerraform

About the role

Key responsibilities & impact

Lead the architecture, design and development of software solutions across backend and frontend components
Independently design, develop, test, deliver and maintain high-quality software solutions with minimal supervision
Provide technical leadership across Java backend and Angular frontend development
Lead the breakdown and implementation of complex features, coordinating design and task execution across teams
Create, review and maintain architecture and design documents, technical specifications, code and API documentation, installation and operational guides, and best-practice guides
Influence and contribute to technical direction and standards for products and projects
Act as a subject matter expert, providing guidance, mentoring and code reviews
Ensure performance, scalability, security, availability and maintainability requirements are met
Isolate and resolve complex cross-system issues involving code, infrastructure, networking and cloud platforms
Collaborate with DevOps, QA and platform teams to improve build, deployment and operational readiness
Promote automation, CI/CD best practices and operational awareness
Drive continuous improvement and automation-first approaches for provisioning, deployment, testing and operations
Propose solutions that improve system reliability, deployment confidence and time-to-market
Embed security and compliance requirements into pipelines and environments
Stay up to date with emerging technologies
Adhere to corporate policies, including the ACI Code of Business Conduct and Ethics
Perform other duties as assigned
Work on ACI’s PRM fraud detection engine, which uses neural networks and database rules to help banks and financial institutions identify fraudulent transactions

Requirements

What you’ll need

Bachelor’s degree in Computer Science or related field or equivalent professional experience
15+ years of professional software development experience, with a strong focus on enterprise systems
Strong understanding of modern software architecture and non-functional requirements
Strong expertise in Java and modern backend development frameworks
Proven experience with Angular and building user-facing applications
Solid understanding of object-oriented design, clean architecture and software design patterns
Strong experience implementing and validating non-functional requirements
Ability to design and coordinate implementation for complex technical solutions
Experience with Git/GitHub or similar version control systems
Experience with relational databases, such as Oracle or MS SQL
Proven experience designing and operating CI/CD pipelines using Git-based workflows
Experience with cloud platforms, preferably Microsoft Azure
Familiarity with ethical AI principles, data privacy considerations, and responsible use of AI in enterprise systems
Exposure to AI-assisted developer tools and interest in leveraging AI to improve engineering productivity
Knowledge of Agile/Scrum development practices
Ability to break down complex systems and coordinate design and execution across multiple teams
Experience working in multicultural, geographically distributed teams
Strong communication, mentoring and stakeholder-management skills
Hands-on experience with containers and orchestration platforms (Docker, Kubernetes) is nice to have
Experience with Infrastructure as Code (e.g. Terraform) is nice to have
Experience collaborating across engineering, data science and product to translate AI capabilities into production-ready software solutions is nice to have
Experience building or enhancing Java-based applications that leverage AI outputs as part of core business workflows is nice to have
Must be currently authorized to work in Romania on a full-time basis
Position does not offer sponsorship for employment visa status or work permit now or in the future

Benefits

Comp & perks

Opportunities for growth
Career development
Competitive compensation and benefits package
Innovative and collaborative work environment