Java Developer (React and Spark)

UnionSys Technologies • IT Consulting & Digital Transformation • Custom Software Development • JavaScript • Java • SQL • 3 days ago
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Salary
≈ $17k – $40k per year (Estimated)
Location
In office (Bengaluru, Gurgaon, Mumbai)
Experience
5+ years exp

First seen by Alion on Oct 23, 2026.

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UnionSys Technologies

UnionSys caters to software solutions for accelerating businesses using full-cycle software development with branches worldwide from North America, Middle-East to South East Asia.
unionsystechnologies.com • Bengaluru • Pune • IT Consulting & Digital Transformation • Custom Software Development • Est. 2008
Tech stack of UnionSys Technologies

UnionSys Technologies is looking for a skilled Java + React + Spark with 5+ years of experience and strong expertise inJava, Core Java, Java 8/11/17 Data Structures and Algorithms (DSA), Multithreading, Concurrency, Spring Boot, Microservices, REST APIs, Apache Spark, React.js, System Design, Scalable Application Development, SQL, Relational Databases, Kafka, Cloud Platforms (AWS, Azure, GCP), Docker, Kubernetes, CI/CD, Generative AI


Requirements:

  • Strong Core Java fundamentals.
  • Hands-on experience with Java 8/11/17 features.
  • Strong knowledge of Data Structures and Algorithms.
  • Expertise in multithreading and concurrency concepts.
  • Experience building microservices using Spring Boot.
  • REST API development experience.
  • Hands-on experience with Apache Spark.
  • Front-end development experience using React.js .
  • Strong understanding of system design and scalable application development.
  • Experience working with SQL and relational databases.
  • Nice to Have: Kafka, Cloud Platforms (AWS/Azure/GCP), Docker and Kubernetes, CI/CD pipelines, and GenAI application exposure.

Skills

Apache Spark, Core Java, Java, Microservices, REST, Spark, Spring Boot

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