Java Developer

Job Title: Senior Product Software Engineer I

Location: Bangalore, India

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Software Engineer (Backend / Distributed Systems)

This role is for a hands-on Backend Software Engineer with 5+ years of experience building and maintaining large-scale distributed systems. The candidate will be responsible for developing scalable backend services, optimizing system performance, improving reliability, and contributing to architecture decisions.

Key Responsibilities

• Design, develop, and maintain backend services and APIs.
• Build scalable and reliable distributed systems.
• Collaborate with global engineering teams (US & India).
• Participate in system design, code reviews, testing, and CI/CD processes.
• Monitor production systems and provide support through on-call rotations.
• Improve system performance, fault tolerance, observability, and resiliency.
• Contribute to architectural discussions and technical decision-making.

Mandatory Skills

• 5+ years of software development experience.
• Strong coding skills in Java or Python.
• Experience with Distributed Systems and Microservices Architecture.
• Hands-on experience with REST APIs and API-driven applications.
• Strong knowledge of MySQL or PostgreSQL.
• Experience with CI/CD, testing, and code quality practices.

Preferred Skills

• Spring Boot (for Java developers).
• Kafka, Kinesis, or other event-driven/streaming technologies.
• Docker and Kubernetes.
• Terraform or Infrastructure as Code tools.
• Cloud platform experience (AWS/GCP/Azure).
• High-throughput and low-latency system experienc

We are seeking a highly skilled Senior Java Developer with expertise in Microservices architecture and Spring Boot to join our dynamic team. The ideal candidate will be responsible for designing, developing, and deploying scalable, high-performance backend solutions.

Key Responsibilities:

• Design, develop, and maintain Java-based applications using Spring Boot and Microservices architecture.
• Develop and implement RESTful APIs and integrate them with front-end components.
• Optimize application performance and ensure high availability and scalability.
• Collaborate with cross-functional teams to gather and analyze business requirements.
• Implement security best practices, including authentication and authorization mechanisms.
• Develop and maintain unit and integration tests to ensure robust software quality.
• Work with DevOps teams to automate CI/CD pipelines and ensure smooth deployment processes.
• Monitor and troubleshoot production issues, providing efficient resolutions.
• Stay updated with emerging technologies and best practices in Java development and cloud-native applications.

Required Skills & Qualifications:

• 8+ years of hands-on experience in Java development.
• Expertise in Spring Boot, Spring MVC, Spring Cloud, and other Spring frameworks.
• Strong experience with Microservices architecture and API development.
• Proficiency in RESTful services, JSON, and Swagger/OpenAPI.
• Hands-on experience with SQL and NoSQL databases (e.g., MySQL, PostgreSQL, MongoDB, Redis).
• Familiarity with message brokers like Kafka or RabbitMQ.
• Experience with containerization (Docker, Kubernetes) and cloud platforms (AWS, Azure, or GCP).
• Solid understanding of CI/CD pipelines using Jenkins, GitLab, or similar tools.
• Strong problem-solving skills and the ability to work in an agile development environment.
• Excellent communication and teamwork skills.

Nice-to-Have:

• Experience with GraphQL and event-driven architecture.
• Knowledge of reactive programming using WebFlux.
• Familiarity with observability tools like Prometheus, Grafana, ELK stack.

Java Tech Lead (5–6 Years Experience)

About the Role

We are seeking a highly skilled Java Tech Lead with 5–6 years of hands-on experience in backend engineering, architecture design, and leading development teams. 

The ideal candidate will combine strong technical expertise in Java frameworks with a deep understanding of system design, scalability, and performance optimization.

This role involves technical leadership, code reviews, and architectural decision-making for complex enterprise systems — with occasional exposure to analytics-driven and Python-based components.

Key Responsibilities

• Architect, design, and develop scalable backend systems using Java (Quarkus, Spring Boot, Spring, Java EE).
• Own the architecture — ensure modular, extensible, and high-performance service design.
• Lead and mentor a team of developers; conduct code reviews, enforce best practices, and ensure high code quality.
• Collaborate with cross-functional teams (frontend, DevOps, product, data) to deliver integrated, end-to-end solutions.
• Design and optimize database schemas (MySQL, PostgreSQL) and ensure efficient query performance.
• Implement and maintain microservices and distributed systems with strong fault tolerance and observability.
• Drive the adoption of modern development workflows — Git branching strategy, CI/CD, and code quality automation.
• Analyze system performance bottlenecks, implement monitoring, and ensure smooth production deployments.
• Contribute to architecture reviews, technical documentation, and design discussions.
• Occasionally contribute to Python-based analytics modules or automation scripts.
• Work with AWS cloud services (EC2, S3, RDS, Lambda) for deployment, scaling, and infrastructure automation.

Required Skills & Qualifications

• 5–6 years of professional experience in backend application development using Java.
• Strong proficiency in Java frameworks: Quarkus, Spring Boot, Spring, Java EE.
• Proven experience in architecture design, system decomposition, and microservices design principles.
• Solid understanding of object-oriented design (OOD), design patterns, and SOLID principles.
• Strong experience with relational databases (MySQL, PostgreSQL) and query optimization.
• Good understanding of event-driven systems, RESTful APIs, and asynchronous processing.
• Proficiency in Git for version control and team collaboration.
• Strong analytical and debugging skills; ability to diagnose complex production issues.

Good to Have

• Hands-on experience with Python for data processing or analytics integrations.
• Familiarity with AWS cloud architecture and cost optimization practices.
• Experience with CI/CD pipelines (GitHub Actions, Jenkins, GitLab CI).
• Knowledge of Docker/Kubernetes for containerized deployments.
• Exposure to NoSQL databases (MongoDB, DynamoDB, Cassandra).
• Experience with message queues (Kafka, RabbitMQ, or AWS SQS).
• Understanding of system scalability, caching (Redis/Memcached), and observability stacks (Prometheus, Grafana, ELK).

Soft Skills

• Strong leadership, mentoring, and communication skills.
• Proven ability to drive technical decisions and balance short-term delivery with long-term architectural health.
• Collaborative mindset — works closely with product, design, and operations teams.
• Passion for clean architecture, high performance, and continuous improvement.
• Self-driven with a strong sense of ownership and accountability.

Greetings from HashStudioz Technologies!

We are happy to share the details of 'Java Developer'. Kindly read the job description carefully before your technical Interview Round.

Company Profile :
  - We are a global leader in product development, having a wide range of technology experts under the same roof. You would be surprised to meet our enthusiastic team of blockchain, cloud, Mobility & Automation.

- Our mission is to help companies adopt new technologies and simplify complicated issues that arise amid technology evolution.

- We are designers, engineers, developers, analysts, programmers, testers, cloud experts, blockchain specialists, automation freaks & smart workers who have developed applications that are now being used by millions of consumers worldwide.

- We know how to build successful software products and welcome startup minds to discuss their product feasibility & scalability.

Company Profile:- https://www.hashstudioz.com/">https://www.hashstudioz.com/

Job Profile:  "Java Developer"

Industry:        IT-Software / Software Services

Role:

1. Ensure effective Design, Development, and Support activities in line with client needs and architectural requirements.
2. Ensure continual knowledge management
3. Adherence to the organizational guidelines and processes
4. Define best practices, coding standards, and development methodology as part of the master solution design and ensure compliance with these guidelines
5. Highlight and resolve solution dependencies on enterprise systems
6. Good problem-solving capabilities and troubleshooting skills
7. Should have excellent communication (oral and written) and interpersonal skills

Requirements:

1. 0 -6 Years of experience in Java, J2EE Development
2. Must have Hands-on Experience in Angular/ React
3. Fluency in programming constructs and working with Spring/Spring Boot/Spring MVC and Hibernate framework
4. Good experience with 1-2 Frontend Technologies eg JavaScript/Angular/React/jQuery
5. Good experience with MySQL/MongoDB
6. Design and Development of project modules independently
7. Handle SDLC individually
8. Good understanding of Object-Oriented Programming and Design Concepts.

• Proven hands-on Software Development experience
• Proven working experience in Java development
• Hands on experience in designing and developing applications using Java EE platforms
• Object Oriented analysis and design using common design patterns.
• Profound insight of Java and JEE internals (Classloading, Memory Management, Transaction management etc)
• Excellent knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate)
• Experience in the Spring Framework
• Experience as a Sun Certified Java Developer
• Experience in developing web applications using at least one popular web framework (JSF, Wicket, GWT, Spring MVC)
• Experience with test-driven development

Requires a bachelor's degree in area of specialty and experience in the field or in a related area. Familiar with standard concepts, practices, and procedures within a particular field. Relies on experience and judgment to plan and accomplish goals. Performs a variety of tasks. A degree of creativity and latitude is required. Typically reports to a supervisor or manager.

Designs, develops, and implements web-based Java applications to support business requirements. Follows approved life cycle methodologies, creates design documents, and performs program coding and testing. Resolves technical issues through debugging, research, and investigation.

Additional Job Details:

Strong in Java, Spring, Spring Boot, REST and developing MicroServices.

Knowledge or experience , Cassandra preferred

Knowledge or experience on Kafka

Good to have but not must

Good to know:

Reporting tools like Splunk/Grafana

Protobuf

Python/Ruby

• Strong Java software development experience – with a focus on Java 8 & 9
• Experience with NoSql databases – ideally with MongoDB
• Experience implementing REST apis – ideally with JAX-RS
• Experience with Reactive Programming – ideally with RxJava
• Experience implementing unit tests

• Experience developing applications in fintech or established financial institutions
• Experience with microservice architectures
• Experience developing systems that can scale to large amounts of data
• Experience working in Agile Scrum
• Experience working on a globally distributed team