Software Engineer - Java

Job Description: Java Developer for Hypertest SDK Development

[See assignment at the end as well]

Company Overview

At Hypertest (https://hypertest.co), we're not just writing code; we're rewriting the rules of software development.

Our autonomous testing tool has already transformed the NodeJs ecosystem for developers at more than 50 teams, and now we're bringing this revolution to Java with your help.

Our Mission: Save developers from the mundane. We automate test case generation, letting you bid farewell to countless hours spent on JUnit, Mockito, RestAssured, Postman, etc.

Imagine a development cycle where your focus is purely on creating, not correcting.

Role: Java Developer

HyperTest seeks a Senior Java Developer with profound expertise in Java's core mechanics and a passion for solving complex problems. This role is central to the development of our Java SDK, crucial for expanding HyperTest's functionalities. Ideal candidates will have a strong background in Java, including experience with library patching, bytecode manipulation, and observability frameworks like OpenTelemetry, New-Relic, Datadog etc.

Location

This is a hybrid position based in Gurugram.

Key Responsibilities

• Develop the HyperTest Java SDK, employing advanced Java techniques for runtime library manipulation and data mocking.
• Extend OpenTelemetry for observability and monitoring in distributed systems, ensuring our SDK integrates seamlessly with modern development ecosystems.
• Create solutions for simulated testing environments that operate in various modes without modifying the original application code.
• Serve as a Java subject matter expert, guiding the team in best practices and innovative software development approaches.

Qualifications

• Java Expertise: Extensive experience in Java, including familiarity with its internals, memory model, concurrency, and performance optimization. Not just experience with high-level frameworks, but a solid understanding of underlying principles and the ability to manipulate Java's core functionalities.
• Software Architecture: Strong grasp of software design patterns, architectural principles, and the ability to solve complex problems with efficient, scalable solutions.
• Analytical Skills: Exceptional problem-solving abilities, capable of addressing complex challenges and driving innovative solutions.
• Communication: Excellent verbal and written communication skills, essential for teamwork and collaboration.
• Specialized Knowledge: Experience with bytecode manipulation, library patching (e.g., Byte Buddy), and a clear understanding of Java's compilation and execution process.

Ideal Candidate Profile

• Not Just Another Java Developer: We're looking for someone who has moved beyond just building applications with Spring Boot or similar frameworks. You should have an experience that demonstrates a deep understanding of Java, including direct manipulation of bytecode, custom library creation, and performance optimization.
• A True Java Enthusiast: You find excitement in exploring Java beyond the surface level, delving into its internals, and leveraging this knowledge to build innovative solutions.

Technical Assessment Overview

Shortlisted candidates will complete a short technical assessment focused on:

• Library Patching and Dynamic Data Mocking: Demonstrating advanced Java skills in runtime library functionality manipulation.
• OpenTelemetry Integration: Applying observability frameworks to trace and monitor distributed systems, a key component of our SDK development.
• Simulated Testing Environments: Creating flexible testing scenarios that replicate real-world conditions without altering the original code.
• Innovative Problem-Solving: Tackling complex Java-related challenges that reflect the technical depth required for this role.

This assessment will help us identify candidates who not only have the technical expertise but also the creativity and problem-solving skills essential for success at HyperTest.

Why Join HyperTest?

Joining HyperTest means being at the forefront of the automated testing revolution. We offer a dynamic work environment, opportunities for professional growth, and the chance to make a significant impact on our product and the wider development community.

Assignment Link

https://t.ly/sp5Xa

Self-Assessment/Screening Questions

1. Do you have experience with Java bytecode manipulation?
2. Are you familiar with library patching techniques in Java, such as using Byte Buddy?
3. Have you used OpenTelemetry or similar frameworks for observability in distributed systems?
4. Do you understand how opentelemetry java sdk works?
5. have you developed SDKs or libraries in Java?
6. How many years of Java development experience do you have?
7. How many projects have you worked on that required deep knowledge of Java's internals (e.g., memory management, concurrency)?
8. After reviewing the detailed assignment at https://t.ly/sp5Xa , how confident are you in your ability to meet the technical challenges outlined, on a scale from 1 to 10?

Job Overview:

We are looking for a Full-Stack Developer with 4+ years of experience in software development. The ideal candidate will be proficient in both frontend and backend technologies, capable of building scalable and high-performance applications, and have a problem-solving mindset. You will collaborate with cross-functional teams to develop, optimize, and maintain web applications.

Key Responsibilities :

- Design, develop, and maintain web applications ensuring performance and scalability.  

- Work with backend services using Node.js (Express.js/NestJS) and databases.  

- Develop and maintain frontend applications using React.js (minimum 1 year experience required).  

- Integrate APIs (RESTful & GraphQL) and third-party services.  

- Write clean, maintainable, and efficient code following industry best practices.  

- Ensure security, reliability, and optimization in applications.  

- Participate in debugging, troubleshooting, and performance tuning.  

- Work closely with designers, product managers, and engineers to deliver high-quality solutions.  

- Stay updated with modern development trends and contribute to technical improvements.  

Required Skills & Qualifications :  

- 4+ years of experience in full-stack development.  

- Strong proficiency in JavaScript and TypeScript.  

- Hands-on experience with Node.js (Express.js/NestJS).  

- Minimum 1 year of experience working with React.js.  

- Experience with SQL (PostgreSQL, MySQL) and NoSQL (MongoDB) databases.  

- Proficiency in API design, development, and integration (RESTful, GraphQL).  

- Familiarity with version control tools (Git, GitHub/GitLab/Bitbucket).  

- Strong problem-solving and analytical skills.  

- Ability to work both independently and collaboratively in a team.  

Good to Have : 

- Experience with Cloud Services (AWS, Azure, or GCP).  

- Familiarity with Containerization (Docker, Kubernetes).  

- Knowledge of testing frameworks (Jest, Mocha, or Cypress).  

- Understanding of event-driven architectures and message queues (Kafka, RabbitMQ).

Requirements: Job Description

• Excellent knowledge in Core Java (J2SE) and J2EE technologies.
• Hands-on experience with RESTful services, API design are must.
• Knowledge of microservices architecture is must.
• Knowledge of design patterns is must.
• Strong knowledge in Exception handling and logging mechanism is must.
• Agile scrum participation experience. Work experience with several agile teams on an application built with microservices and event-based architectures to be deployed on hybrid (on-prem/cloud) environments.
• Good knowledge of Spring framework (MVC, Cloud, Data and Security. Etc) and ORM framework like JPA/Hibernate.
• Experience in managing the Source Code Base through Version Control tool like SVN, GitHub,Bitbucket, etc.
• Experience in using and configuration of Continuous Integration tools Jenkins, Travis, GitLab, etc.
• Experience in design and development of SaaS/PaaS based architecture and tenancy models.
• Experience in SaaS/PaaS based application development used by a high volume of subscribers/customers.
• Awareness and understanding of data security and privacy. Experience in performing Java Code Review using review tools like SonarQube, etc.
• Good understanding of end-to-end software development lifecycle. Ability to read and understand requirements and design documents.
• Good Analytical skills and should be self-driven.
• Good communication with inter-personal skills. Open for learning new technologies and domain.
• A good team player and ready to take up new challenges. Active communication and coordination with Clients and Internal stake holder

Requirements: Skills and Qualifications

• 6-8 years of experience in developing Java/J2EE based Enterprise Web Applications
• Languages: Java, J2EE, and Python
• Databases: MySQL, Oracle, SQL Server, PostgreSQL, Redshift, MongoDB
• DB Script: SQL and PL/SQL
• Frameworks: Spring, Spring Boot, Jersey, Hibernate and JPA
• OS: Windows, Linux/Unix.
• Cloud Services: AWS and Azure
• Version Controls/ Devops tools: Git, Bitbucket and Jenkins.
• Message brokers: RabbitMQ, and Kafka
• Deployment Servers: Tomcat, Docker, and Kubernetes
• Build Tools: Gradle/Maven

Key Responsibilities/Duties:

· Develops and enhances software applications through coding and testing.

· Writing well designed, testable, efficient code

· Involves in code reviews and training.

· Contributing in all phases of the development lifecycle

· Delivers highest quality software by creating unit test plans and testing code thoroughly.

· Adept with the tools, applications, and processes used for software development.

· Implements solutions as designed in technical documentation specification and coding standards.

· Creates project documentations and coordinates technical issues.

· Knows the business rules and concepts, software specifications and designs provided by the technical lead and apply them in completing the assigned task.

Qualification: Bachelors or Master’s degree in Computer Science or Engineering.

• New features developed independently with the ability to document the design after understanding and evaluating the requirements with necessary groundwork on required application components
• Hands-on coding to implement the design for feature completion
• Able to write unit tests that ensures bug free code
• Able to handle the multi-tenant and performance requirements of the new features and applications.
• Integrate the new features with existing modules, deliver ready to use code meeting necessary build requirements and CI/CD requirements.
• Work with other functional groups for product, technology, QA, tech support and deployment team.

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The ideal candidate must have the following qualifications.

• BE/B.Tech Degree from a reputed institution with at least 7 years of relevant experience
• Hands-on experience with Core Java, J2EE with a good knowledge of its ecosystem
• Experience with JUnit, JMH like performance tuning test tools preferred
• REST API design and development experience. Usage of Swagger or other API spec tools would be preferred. Working knowledge on Spring Boot is a plus
• Hands-on experience with some of the following application components is a plus: Solr, Kafka, OpenTSDB, Elasticsearch, Janus graph or any graph DB.
• Experience with databases such as MongoDB, MySQL or PostgreSQL required.
• Familiarity with continuous integration and build tools such as Jenkins or CircleCI, Maven, Ant required
• Experience building applications using microservices architecture is highly preferred. Knowledge of Kubernetes, Docker would be ideal
• Working knowledge on public clouds like AWS or Google cloud or Azure is a plus
• Experience building scalable systems
• Strong problem solving skills and ability and interest to solve complex problems
• Interest in machine learning (ML) data science is a plus

• Design, develop and maintain applications and features.
• work on a huge dataset of IoT data and create algorithms to extract meaningful information.
• Adding features to the existing applications for monitoring and supporting field operations.
• Implementing application testability and diagnostics and fixing bugs.
• Create/ deploy and follow CI/CD pipelines to manage deliveries