Software Engineer (Java/AWS

Randstad is seeking a Senior Cloud Software Engineer to join our client in Washington, D.C., designing, developing, and operating resilient, high-volume cloud applications in AWS. In this role, you will lead technical designs, build robust REST APIs and event-driven microservices using Java 21+, Spring Boot, and Python, and drive CI/CD automation. You will play a crucial role in architecting multi-region failover strategies, improving MTTR, and maintaining high availability across production systems while mentoring mid-level engineering talent., * Design, build, test, and deploy scalable REST APIs, microservices, and event-driven solutions using Java 21+, Spring Boot, and Python.

• Drive architecture and technical design decisions for mission-critical, high-availability AWS applications.
• Implement CI/CD automation pipelines and infrastructure deployment using GitHub Actions, Jenkins, CodePipeline, and CloudFormation.
• Lead production troubleshooting, conduct root cause analysis, and continuously optimize application MTTR and resiliency.
• Establish multi-AZ and multi-region disaster recovery, failover testing, and business continuity strategies.
• Provide technical leadership, conduct code reviews, and mentor team members on cloud-native best practices.

• Bachelor’s degree in Computer Science, Engineering, or equivalent practical experience.
• 7+ years of hands-on software development experience.
• Strong proficiency with Java 21+, Spring Boot, RESTful services, and Python.
• Deep experience with core AWS services: ECS/Fargate, EventBridge, SQS/SNS, Lambda, S3, CloudWatch, and Aurora PostgreSQL.
• Proven track record designing and maintaining fault-tolerant, distributed systems across multiple AWS Availability Zones and Regions.
• Experience with database performance tuning, data modeling, and writing complex SQL.
• Active AWS Certification (AWS Certified Developer, Solutions Architect Associate, or Cloud Practitioner).
• Solid background in automated unit/integration testing (JUnit, Mockito) and CI/CD tools.

Preferred Qualifications

• Experience with B2B integrations, EDI systems, or high-volume transaction environments (e.g., transportation, logistics, or government tech).
• Practical experience implementing complex disaster recovery and failover frameworks., AWS Lambda, Amazon Simple Storage Service (S3), Amazon Web Services (AWS), Application Programming Interface (API), Automation, Background Investigation, Best Practices, Business Strategy, Business-to-Business (B2B), Cloud Applications, Cloud Computing, Code Reviews, Computer Science, Continuous Deployment/Delivery, Continuous Integration, Data Modeling, Database Technology, Distributed Computing, Electronic Data Interchange (EDI), Failover, GitHub, Government, High Availability, High Availability Software, Identify Issues, Integration Testing, JUnit, Java, Jenkins, Logistics, Mentoring, Microservices, Performance Tuning/Optimization, PostgreSQL, Production Systems, Python Programming/Scripting Language, REST (Representational State Transfer), Record Keeping, Root Cause Analysis, SQL (Structured Query Language), Simple Queue Service (SQS), Software Development, Software Engineering, Technical Leadership, Technical/Engineering Design, Testing, Unit Test