Core Java - Multithreading, Exception handling, Garbage collection.
at OpexAI

About OpexAI
About
We at opexAI strive to make business strategies and provide effective solutions to your complex business problems using AI, machine learning and cognitive computing approaches. With a 40+ years experience in analytics and a workforce of highly skilled and certified consultants, we provide a realistic approach to help you chart an optimal path to success.
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Responsibilities
- Technical Leadership & Architecture: Serve as a technical authority, define cloud-native standards, and own end-to-end system design for complex, distributed, and high-scale solutions.
- Engineering Excellence: Lead modernization initiatives, transition legacy systems to microservices, and ensure performance, scalability, and security.
- Platform & Cloud Enablement: Champion GCP-native services (GKE, Cloud Run, Pub/Sub, BigQuery, Cloud SQL, Spanner), influence CI/CD, and drive FinOps strategies.
- Mentorship & Organizational Impact: Mentor Lead and Senior Engineers, foster engineering rigor, and collaborate with Product Management to translate business strategy into technical solutions.
Required Skills, Experience & Background
- 12+ years of professional experience building enterprise-grade software systems.
- Proven experience operating at a Lead or Principal Engineer level.
- Strong hands-on experience with Java or another major programming language (e.g., Go, Python, C#).
- Deep expertise in microservices architecture, RESTful APIs, and distributed systems.
- Strong experience with SQL and NoSQL databases and data modeling.
- Expertise in cloud-native design principles (stateless services, scalability, resiliency).
- Strong experience building and operating systems on Google Cloud Platform (GCP).
- Proficiency with containers and orchestration (Docker, Kubernetes, GKE).
- Experience with CI/CD pipelines, Git-based workflows, and observability.
- Experience with Big Data and data engineering technologies (e.g., BigQuery, Spark).
Qualifications
- Bachelor’s degree in computer science or related field (required).
- Master’s degree in computer science or related field (preferred).
We have an immediate requirement for a Java Developer role in the Pune location. Please find the details below:
Role: Java Developer
Experience: 3–4 Years (Mandatory)
Location: Pune
Joining: Immediate joiners only
Key Responsibilities:
- Develop and maintain scalable and robust J2EE applications
- Follow and implement coding standards within the project
- Integrate with third-party APIs and services
- Work in an Agile environment to design and implement new features
- Support team members in resolving technical issues
- Debug and resolve production issues (code/infrastructure)
- Communicate effectively with team members and product management
Mandatory Skills:
- Strong knowledge of Java and JEE internals (Class Loading, Memory Management, Transaction Management, etc.)
- Expertise in OOPs/OOAD concepts and design patterns
- Hands-on experience with Spring Framework and Web Services
- Basic knowledge of JavaScript, jQuery, AJAX, and DOM
- Good understanding of SQL, relational databases, and ORM (Hibernate/DAO)
- Strong problem-solving skills and communication abilities
Important Note:
- Interview is scheduled for Monday
- Selected candidates are expected to join by Tuesday or Wednesday
Technical Skills :
Java, Spring Boot, MySql, CI/CD Automation.
UI Scripting,NPL/ML
Required Skills/Qualifications:
∙ B.Tech/MCA in Comput
Required Skills/Qualifications:
Any Backend Technology is acceptable
∙ B.Tech/MCA in Computer Science or equivalent with 1-3 years’ experience with server-side web application development.
∙ Extensive development experience using LAMP or MEAN stack, RESTful web services or Node.js, HTML and CSS.
∙ Good understanding of Data structures and Relational Databases like MySQL or NoSQL Databases like MongoDB.
∙ Experience working with services in AWS such as EC2, RDS, and ELBs and have knowledge of VPCs.
∙ Experience with server side and client side MVC frameworks, Kafka Ansilble,Jenkins.
∙ Exposure to Continuous Integration (CI) and Continuous Deployment (CD), automated testing and agile development methods.
∙ Understanding of Version Management Tools like GitHub.
er Science or equivalent with 1-3 years’ experience with server-side web application development.
∙ Extensive development experience using LAMP or MEAN stack, RESTful web services or Node.js, HTML and CSS.
∙ Good understanding of Data structures and Relational Databases like MySQL or NoSQL Databases like MongoDB.
∙ Experience working with services in AWS such as EC2, RDS, and ELBs and have knowledge of VPCs.
∙ Experience with server side and client side MVC frameworks, Kafka Ansilble,Jenkins.
∙ Exposure to Continuous Integration (CI) and Continuous Deployment (CD), automated testing and agile development methods.
∙ Understanding of Version Management Tools like GitHub.
- Exp : 3-15 years
- Java NMS/EMS : Work location : GGN
- Experience in implementation of NMS/EMS applications and good understanding of FCAPS functionalities
- Proficient in Java/J2EE, SpringBoot, SpringCloud, Kafka and REST webservices
- Experience in implementation of micro-services based applications
- Experience in any of the rule engine like Drools and workflow creation like JBPM, Camunda
- Experience in SQL and NoSQL databases, DB schema designing and database accessing using Hibernate JPA
- Experience with SNMP, Netconf, device management, inventory management
- Hands on experience in Wildfly/Jboss App server
- Experience in dev-ops tools like Jenkins, Docker, Kubernetes
- Proficient in Angular, HTML5, CSS, Bootstrap, Typescript, ES6
- Good to have Micro Frontend Architecture exposure
- Experience with tools like Maven, Ant, Git, Sonar, JaCoCo, Karma, Jasmine
- Scripting using Shell, Python, etc
- Must be involved in customer interactions for requirement gathering and solution designing discussions
Job Description:
Mandatory Skills: Java, J2ee, spring, hibernate, spring mvc.
Preferred: Restful, microservices, spring boot.
Website: https://www.games24x7.com">https://www.games24x7.com
- Strong fundamentals in data structures, algorithms.
- Strong fundamentals in Core Java/J2EE.
- Familiarity with any one of Spring, Struts, Hibernate frameworks.
- Familiarity with code design principles, patterns, and best practices in java.
- Understanding of SQL and NoSQL databases.
- IDE/Tools - Eclipse, NetBeans, Ant, Maven, Gradle
- Web Technologies - XML/XSD, HTML 5.0, CSS 3.0, JavaScript, JQuery, YUI
- Configuration Management - GIT, Subversion SVN
- Active participation in one or more open-source projects is a strong plus
- Familiarity with the AWS cloud ecosystem is a strong plus.
- OCJP certified will be an added advantage.
- Hands-on with *Unix/Windows based systems.
- Design, develop, test, debug and maintain components of a feature-rich management and orchestration product
- Manage one or more project priorities and deadlines
- The programming languages are mainly Python and Java
- Understand the infrastructure details of public clouds and use DevOps best practices to implement provisioning
You'll Need:
- Strong software design and implementation skills in building infrastructure frameworks.
- Experience building and operating extensible, scalable resilient systems.
- Working knowledge of Java and Python.
- Solid understanding of basic systems operations (disk, network, etc).
- Willingness and ability to learn new languages and concepts.
- 8+ years of experience and a BS/MS degree in Computer Science -or- a related field.
Nice to have:
- Cloud infrastructure systems engineering experience.
- Experience in building control planes.
- Experience building RESTful APIs.
- Experience with containers and cluster managers like Kubernetes.
- Experience in App deployment and config management frameworks such as Ansible, Terraform, Chef, Puppet, etc.
You will be expected to design, develop and maintain large-scale complex backend web
applications.
You will be expected to rapidly learn and apply relevant new technologies.
You will be having a high level of interaction with business and product stakeholders.
You will be working on the entire web application stack, which includes:
o Web server hosting
o RESTful communication
o Message brokering
o Backend application layer, which includes the service and domain layers
o Data layer for persistence or caching
You will be participating in an agile software development cycle, which includes:
o Design
o Development
o Code Review
o Unit and Integration Testing
o Release
As a senior developer, you will be expected to contribute to design, code review, refactoring, and
project management.
You will be exposed to the following technologies:
o Web application frameworks: Ruby on Rails, Node.js, Java Play, Vert.x, AIOHTTP, AWS
Lambda
o Languages: Ruby, Java, Kotlin, Javascript, Python
o Data stores: PostgreSQL, Aerospike, Redis, Amazon Redshift
o Communication: HTTP, Amazon SQS, Sidekiq, Amazon SNS
o Server Management: Amazon ECS, Docker
Product Overview
You will be contributing to products concerning both customers and partner drivers.
Product sectors include:
o Growth: You’ll build tools to help boost user growth on the platform including our industry
best driver on-boarding, training and certification system, referral system, and lead
management models.
o Lifecycle Management: Build tools to help users engage with the platform better, which
includes rewards and recognition module, subscription service, account management tools,
partner and customer wallets and payout modules, and churn detection systems among
others.
o Transaction Experience: You’ll help deliver the most delightful booking experience to our
customers and drivers. As part of this team, you’ll be responsible for our core booking
system, pricing and payment systems, location tracking and filtering services, fraud
prevention systems, and in-app ticketing and support among others.
o Fulfilment: As part of the fulfilment team, you’ll work on systems which ensure high degree
of ride fulfilment on the platform. Tools including allocation methodologies and system,
dynamic pricing, dynamic partner routing, and partner re-activation tools among others.
o Enterprise Solutions: You’ll help Porter’s enterprise customers achieve delivery excellence.
You’ll build tools for contract management, fleet management, fleet and route optimisation
tools, alerting and monitoring tools, and analytics suite among others.








