Principal Software Engineer (Java/AWS)

Business Unit:

Cubic Transportation Systems

Company Details:
When you join Cubic, you become part of a company that creates and delivers technology solutions in transportation to make people’s lives easier by simplifying their daily journeys, and defense capabilities to help promote mission success and safety for those who serve their nation. Led by our talented teams around the world, Cubic is committed to solving global issues through innovation and service to our customers and partners.
We have a top-tier portfolio of businesses, including Cubic Transportation Systems (CTS) and Cubic Defense (CD). Explore more on Cubic.com.

Job Details:

Job Summary: We are seeking a Principal Software Engineer to provide technical leadership and architectural ownership for large-scale, cloud-native Java microservices running on AWS. This role requires deep expertise in Java (11+), Spring Boot, Kubernetes, and infrastructure-as-code, along with a strong focus on reliability, security, performance, and cost efficiency. You will drive system design decisions, mentor engineers, partner cross-functionally, and ensure highly available, production-grade SaaS platforms that meet strict SLA/SLO requirements.

Essential Job Duties and Responsibilities:

• Core stack: Expert-level Java (Java 11+), Spring Boot, microservices, RESTful APIs; strong Bash/Python scripting for tooling and automation.
• Cloud/AWS: Deep experience with EC2/ECS or EKS, Lambda, API Gateway, S3, RDS/DynamoDB, SQS/SNS, CloudWatch/CloudTrail, IAM, VPC networking, and Secrets Manager/Parameter Store.
• Containers & IaC: Docker, Kubernetes, Terraform, or CloudFormation.
• CI/CD: Pipeline design and automation (GitHub Actions/Jenkins/GitLab).
• Observability & Reliability: Metrics, logging, tracing, SLO/SLA definition, performance tuning, cost management.
• Security & Compliance: Secure coding practices, IAM controls, secrets handling, vulnerability scanning, patching workflows.
• Data & Integration: SQL/NoSQL design, messaging (Kafka or SQS/SNS), API design, and versioning.
• Leadership: Service ownership, architecture reviews, mentoring, cross-functional collaboration.
• Operations: Participation in 24×7 on‑call rotation and incident management.
• Nice to have: Experience with real‑time transit/IoT systems,  Caching technologies (Hazelcast, Redis/ElastiCache), multi‑tenant architecture.

Minimum Job Requirements:

• Working US hours, roles with collaboration across distributed engineering teams.
• Bachelor's in CS/EE or another relevant discipline.
• Eight (8)+ years of relevant professional experience.
• Strong ownership, problem-solving, and experience in production SaaS environments.
• Ability to support high‑availability systems and customer‑impacting SLAs.

Worker Type:
Employee