Senior Java Full Stack Engineer with AWS (Backend Focus)

Location: Rockville, MD or McLean, VA — Hybrid Duration: 6+ months, with potential extension Pay Rate: $50/hr-$55/hour on W2 Experience: 7–8+ years of software development experience Interview Process: Technical assessment and onsite interview Eligibility: Candidates must be local to DC, Virginia, or Maryland and available for the assessment and onsite interview.

Role Overview: Client is seeking a hands-on Senior Full Stack Engineer to build a new application from the ground up within a fully serverless AWS architecture. The role primarily focuses on backend development, API and system integrations, and scalable processing of high transaction volumes and large datasets. Front-end expertise is not a priority.

Key Responsibilities: Develop backend services using Java and Spring Boot. Build and integrate serverless components on AWS, including Lambda functions using Python and/or TypeScript. Develop REST APIs and integrate applications and services across the broader enterprise ecosystem. Design and optimize SQL queries and database interactions for large-scale data processing. Implement asynchronous messaging and event-driven workflows. Build scalable, reliable services that support high transaction volumes. Collaborate with technical leads and architects on application design and implementation. Troubleshoot performance issues and improve backend reliability and throughput. Required Qualifications7–8+ years of software development experience with strong hands-on backend expertise. Strong proficiency in Java and Spring Boot. Hands-on experience with AWS infrastructure and serverless architecture. Experience with AWS Lambda and working knowledge of Python and/or TypeScript. Strong SQL and database development skills. Experience developing REST APIs and integrating enterprise applications and services. Experience with messaging systems and asynchronous, event-driven communication. Experience building scalable systems that handle high transaction volumes or large datasets. Strong Java developers who can quickly ramp up on Python and/or TypeScript will be considered. Deep expertise in these languages is not required.