Java Developer

The primary objective of this project is to upgrade Elasticsearch from version 7.17 to 8.x. This transition involves significant changes to the client interface, particularly migrating from the legacy Transport Client to the modern Java REST Client. The work is divided into multiple focused streams including Transport Client migration, refactoring of legacy code, and security configuration updates.

Role and Responsibilities:

Key Responsibilities:

Legacy Application Refactoring (Designer):

• Analyze and understand legacy monolithic Java applications with embedded Elasticsearch usage.
• Replace Transport Client usage with Java High-Level REST Client.
• Translate existing Elasticsearch query builders to JSON-based requests compatible with the REST Client.
• Refactor the ES query execution layer to decouple from embedded server-based APIs.
• Design and implement a custom client wrapper to simulate the existing Transport Client interface.

Security Configuration Updates:

• Update deployment procedures to transition from 2-way TLS to 1-way TLS for Elasticsearch communication.

Re-Indexing Toolkit Enhancements:

• Identify and replace all Transport Client invocations with REST client equivalents.
• Update related configuration files and custom query builders accordingly.

Requirements/Qualifications and Skills:

• Strong experience in Java development with emphasis on backend systems.
• Solid understanding of Elasticsearch architecture, indexing, querying, and client interfaces.
• Hands-on experience migrating from Elasticsearch Transport Client to REST Client.
• Proficiency in parsing and generating JSON programmatically in Java.
• Familiarity with TLS/SSL configuration in Java applications.
• Ability to analyze and refactor large, legacy codebases.
• Experience in building custom wrappers or abstraction layers over third-party libraries.
• Understanding of Spring Framework or equivalent dependency injection libraries (optional but preferred).

About Us:

Ascendion is a global, leading provider of AI-first software engineering services, delivering transformative solutions across North America, APAC, and Europe. We are headquartered in New Jersey. We combine technology and talent to deliver tech debt relief, improve engineering productivity solutions, and accelerate time to value, driving our clients’ digital journeys with efficiency and velocity. Guided by our “Engineering to the power of AI” [EngineeringAI] methodology, we integrate AI into software engineering, enterprise operations, and talent orchestration, to address critical challenges of trust, speed, and capital. For more information, please go to www.ascendion.com

With Ascendion (www.ascendion.com), you:

• Will get to work on numerous challenging and exciting projects on our various offerings including Salesforce, AI/Data Science, Generative AI/ML, Automation, Cloud Enterprise and Product/Platform Engineering.
• At Ascendion you have high chances of project extension or redeployment to other clients.
• Additionally, you can also share CV of anyone you know. We have a referral policy in place.