Back to search:Lead Java / Newark, Ca

Primary Skills: NestJS (Expert), Java (Expert), Spring Boot (Advanced), MongoDB (Proficient), Microservices Architecture (Expert)

Contract Type: W2 Contract

Duration: 6 Months

Location: Newark, CA (Onsite)

Pay Range: $70.00 - $80.00 per Hour on W2

Job Summary

We are seeking a Lead Backend Software Engineer with expertise in NestJS and Java to spearhead the migration of our current NestJS services to a robust Java-based microservices architecture. The successful candidate will lead the migration process from planning and design through backend development, execution, and final delivery, ensuring minimal disruption and a smooth transition. This role offers the opportunity to have full ownership of the project and architecture in a challenging and dynamic environment.

Key Responsibilities
  • Rewrite and refactor NestJS backend services into Java microservices while ensuring backward compatibility.
  • Define and implement the new Java microservices architecture, setting best practices for communication and data management.
  • Conduct comprehensive testing to validate the migrated codebase and ensure system reliability and performance benchmarks.
  • Create detailed documentation on the new architecture and migration process for future maintenance and enhancements.
  • Troubleshoot and resolve any issues arising during the migration, delivering a stable and efficient final product.
Must-Have Skills
  • 9 years of proven experience in building and deploying NestJS applications and Java (preferably with Spring Boot) microservices.
  • Proficiency in MongoDB change streams and practical experience with Kafka.
  • Strong ability in designing and implementing microservices at scale, with expertise in advanced concurrency patterns and performance tuning.
Industry Experience
  • Automotive or supply chain industry experience is advantageous, particularly with telemetry and vehicle diagnostics.

This role requires a committed and detail-oriented engineer ready to tackle a significant migration project, ensuring a future‑proof and scalable backend architecture.

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