Lead Backend Engineer (Java) - Locals Only

  • Fremont, CA
  • Posted 2 hours ago | Updated 2 hours ago

Overview

On Site
Depends on Experience
Contract - W2
Contract - 12 Month(s)

Skills

Java
Microservices
Spring Boot
Apache Kafka
MongoDB
Artificial Intelligence
Migration
Node.js
Performance Tuning
Multithreading

Job Details

About the Role
We are seeking a highly skilled expert to develop and own the migration of our existing Backend services to a Java-based microservices architecture. In this role, you will lead the entire migration process from planning and design to backend development, execution, and final delivery ensuring a seamless transition and minimal disruption to our services.

Required Qualifications
Java & Microservices
10+ years of professional experience in Java (preferably with Spring Boot), with a strong background in concurrency and multi-threading.
Proven ability to design and implement microservices at scale (REST, messaging, distributed transactions).
Proven ability to diagnose and resolve concurrency issues in distributed systems, ensuring reliability and scalability under heavy load.
Experience with MongoDB change streams
Practical experience with Kafka (topic setup, message schemas, connectors).
Ability to migrate event-driven processes from Node.js to Java seamlessly.
Demonstrated track record of working on complex technical projects, with minimal supervision.
Excellent accountability and ownership attitude.
Strong written and verbal communication skills for stakeholder updates.
Ability to provide clear and concise technical documentation.
Some AI-related experience

Key Responsibilities
Rewrite and refactor NestJS (TypeScript) backend services into Java microservices (e.g., Spring Boot).
Ensure minimal service disruption and maintain backward compatibility.
Independently define and implement the new Java microservices architecture.
Set best practices for microservices communication, data management, and performance optimization.
Write comprehensive tests (unit, integration, performance) to validate the migrated codebase.
Document the new architecture and migration process to enable future maintenance and enhancements.
Provide regular status updates to stakeholders on migration progress, risks, and timelines.
Diagnose and fix issues that arise during the migration, ensuring a stable release.

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