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Java Software Engineer

Company:
hackajob
Location:
Tysons, VA, 22107
Posted:
February 28, 2026
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Description:

hackajob on-demand focuses on matching talented contractors like you with organisations seeking specific skills for their projects. We use our platform to connect you with exciting contract opportunities and discuss projects on behalf of the companies we partner with.

Job Title: Sr. Backend Java Developer

Location: McLean, VA - onsite - 5 days/week

Description:

They’re looking for a Senior Backend Developer to join an Agile team responsible for a mission-critical web platform. You’ll work on stabilizing and enhancing existing systems while driving modernization using Java and AWS. This role suits a pragmatic, hands-on engineer who enjoys owning backend systems end-to-end and shaping technical direction in a regulated environment.

What You’ll Do

Design, build, and maintain backend services using Java and Spring Boot

Develop and evolve microservices and REST APIs

Modernize legacy backend components while ensuring system stability

Design and optimize PostgreSQL schemas and queries. Integrate services with AWS (Lambda, S3, API Gateway, SQS, EventBridge, etc.)

Apply event-driven and cloud-native patterns to improve scalability and resilience

Write unit and integration tests and participate in code reviews

Support production systems, debugging issues, and improving observability

Collaborate closely with Product, Frontend, QA, and DevOps teams in an Agile environment

What We’re Looking For

Strong experience with Java and Spring Boot

Solid understanding of backend architecture, microservices, and design patterns

Hands-on experience with AWS services Strong SQL skills and experience with PostgreSQL

Experience working with legacy systems and incremental modernization

Familiarity with CI/CD pipelines and containerized deployments

Financial Services or Wealth Management experience is a plus

Ownership mindset and strong problem-solving skills

Technology Stack Languages & Frameworks: Java 23, Spring Boot 3.x Architecture: Microservices, REST APIs, event-driven systems Database: PostgreSQL Cloud: AWS DevOps: Git, Gradle, Docker, CI/CD Observability: New Relic, Elasticsearch Productivity: GitHub Copilot

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