Software Engineer

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Job Title: Senior Java Developer (Reactive Microservices)

Experience: 4 - 7 Years

Domain: Telecom / Communication Services

Role Summary

Spring WebFlux

Key Responsibilities

Technical Delivery & Architecture

1. Reactive Development:

   Design, develop, and maintain high-throughput, low-latency microservices using

   Java (8/11+)

   and the

   Spring Boot / Spring WebFlux

   reactive stack.

2. Database Expertise:

   Design and optimize complex schemas, write highly efficient

   SQL/PL-SQL

   queries, stored procedures, and packages in

   Oracle Database

   to ensure optimal application performance.

3. API Development:

   Implement and document robust, scalable, and secure

   RESTful APIs

   using principles of Reactive Streams (Mono/Flux) and non-blocking I/O.

4. Integration:

   Work with messaging systems like

   Kafka, RabbitMQ, or JMS

   for asynchronous communication and data streaming.

5. Quality & Testing:

   Own the code quality through unit (JUnit/Mockito), integration, and performance testing, ensuring compliance with coding standards and best practices.

6. Troubleshooting:

   Analyze and resolve complex production issues, perform root cause analysis, and lead performance tuning efforts across the application and database layers.

Client Interaction & Collaboration

1. Requirements Gathering:

   Act as a technical liaison, directly interacting with business stakeholders and client product owners to clarify requirements, define technical feasibility, and translate complex business logic into technical user stories.

2. Solution Presentation:

   Clearly articulate technical designs, trade-offs, and solutions to both technical and non-technical audiences, influencing decision-making with the client.

3. Mentorship & Code Review:

   Conduct thorough code reviews, provide constructive feedback, and mentor junior developers on Reactive Programming principles and best practices.

4. Agile Collaboration:

   Actively participate in all Agile ceremonies (Scrums, planning, retrospectives), ensuring timely delivery and clear communication of project status.

Required Technical Skills

• Core Java:

  Strong proficiency in Java 8+ features (Streams, Lambdas, Functional Interfaces).

• Spring Ecosystem:

  Expert-level knowledge of

  Spring Boot

  and

  Spring Framework

  (Core, Data, Security).

• Reactive Stack (Must-Have):

  Hands-on, practical experience (2+ years) with

  Spring WebFlux

  and

  Project Reactor (Mono & Flux)

  for building event-driven, non-blocking applications.

• Database:

  Proven expertise with

  Oracle

  (or equivalent RDBMS) including advanced SQL, query tuning, indexing, and data modeling.

• Microservices:

  Experience with Microservices architecture, REST principles, and inter-service communication patterns.

• DevOps/Tools:

  Familiarity with Git, Maven/Gradle, CI/CD tools (Jenkins/GitLab/Azure DevOps), and containerization (

  Docker/Kubernetes

  ).

Preferred Skills (Good to Have)

• Experience in development/configuration in

  Ericsson Order Care (EOC)

  and/or

  Ericsson Catalog Management (ECM)

  (ConceptWave).
• Experience with NoSQL databases (e.g., MongoDB, Cassandra).
• Familiarity with cloud platforms (AWS, Azure, or GCP).
• Knowledge of WebSockets for real-time communication.

Company Profile

Creospan Inc.

emerging technologies

For more details, visit: www.creospan.com