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

About OpexAI
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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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📍 Position : Java Architect
📅 Experience : 10 to 15 Years
🧑💼 Open Positions : 3+
📍 Work Location : Bangalore, Pune, Chennai
💼 Work Mode : Hybrid
📅 Notice Period : Immediate joiners preferred; up to 1 month maximum
🔧 Core Responsibilities :
- Lead architecture design and development for scalable enterprise-level applications.
- Own and manage all aspects of technical development and delivery.
- Define and enforce best coding practices, architectural guidelines, and development standards.
- Plan and estimate the end-to-end technical scope of projects.
- Conduct code reviews, ensure CI/CD, and implement TDD/BDD methodologies.
- Mentor and lead individual contributors and small development teams.
- Collaborate with cross-functional teams, including DevOps, Product, and QA.
- Engage in high-level and low-level design (HLD/LLD), solutioning, and cloud-native transformations.
🛠️ Required Technical Skills :
- Strong hands-on expertise in Java, Spring Boot, Microservices architecture
- Experience with Kafka or similar messaging/event streaming platforms
- Proficiency in cloud platforms – AWS and Azure (must-have)
- Exposure to frontend technologies (nice-to-have)
- Solid understanding of HLD, system architecture, and design patterns
- Good grasp of DevOps concepts, Docker, Kubernetes, and Infrastructure as Code (IaC)
- Agile/Lean development, Pair Programming, and Continuous Integration practices
- Polyglot mindset is a plus (Scala, Golang, Python, etc.)
🚀 Ideal Candidate Profile :
- Currently working in a product-based environment
- Already functioning as an Architect or Principal Engineer
- Proven track record as an Individual Contributor (IC)
- Strong engineering fundamentals with a passion for scalable software systems
- No compromise on code quality, craftsmanship, and best practices
🧪 Interview Process :
- Round 1: Technical pairing round
- Rounds 2 & 3: Technical rounds with panel (code pairing + architecture)
- Final Round: HR and offer discussion
2. Spring boot/ Spring or any variations of Spring
3. MySQL
4. Mentions of, distributed systems, scalable systems
5. Mentions of ElasticSearch, Kafka or Redis
6. NoSQL databases like Cassandra/DynamoDB/MongoDB/Hbase etc
7. Mentions of Handling scale/scalable systems
9. Mentions of AWS or Amazon web services.
Job Description
As part of our role at a leading global insurance company, we are responsible for developing and managing an application to onboard and oversee the company's sales partners, including agents and brokers. This application provides users with a tailored, independent solution, including a required multi-dimensional validity date concept for administering all organizational and contractual sales force data to deliver structured information to many data consumers.
To reinforce our dynamic development team, we are seeking a skilled Backend or Full-stack Developer. In this role, you will collaborate with international cross-functional teams to design, develop, and deploy high-quality software solutions.
Responsibilities
Design, develop, and maintain the application, ensuring high performance and responsiveness.
Write clean, efficient, and reusable code.
Implement new features and functionality based on business requirements.
Participate in system and application architecture discussions.
Create technical designs and specifications for new features or enhancements.
Write and execute unit tests to ensure code quality.
Debug and resolve technical issues and software defects.
Conduct code reviews to ensure adherence to best practices.
Identify and fix vulnerabilities to ensure application integrity.
Work with frontend developers to ensure seamless integration of user-facing elements.
Collaborate with DevOps teams for deployment and scaling.
Design and implement workflow automation using Camunda BPM, integrating it with backend services and ensuring efficient process execution.
Optimize and maintain business process models and workflow orchestration using Camunda.
Troubleshoot and enhance Camunda BPMN workflows, DMN decision tables, and process automation configurations.
Requirements
Bachelor's degree in computer science, Information Technology, or a related field.
Proven experience as a skilled Backend or Full-stack Developer. Experience in the insurance domain is appreciated.
Strong experience with Spring Boot 3, Java 17 or newer, and Maven.
Experience with PostgreSQL, Jenkins, Sonar, Dynatrace, Kubernetes, Mockito, IntelliJ IDEA, and GitHub repository.
Hands-on experience with Camunda BPM (v7 or v8), including BPMN workflows, DMN decision tables, and REST API integration.
Experience with Angular TS and/or AWS, Kafka is a plus.
Excellent problem-solving and debugging skills.
Strong communication and collaboration abilities to work effectively in a team environment.

- Candidate Should have 5+ Years Of Experience in Core Java
- You will need strong development skills to work on and improve our Scala-based services, and be able to work together with senior teammates to create appropriate architectural design and ensure all aspects are appropriate to meet the business need.
- Excellent Functional Design and Functional Programming skills (more than 2 years of business experience in Scala and Java projects, respectively)
- Core skills in key supporting technologies and/or frameworks such as Play (AKKA) / Lagom
- Proven experience working in teams in the successful delivery of complex, performant and high quality products
- Excellent spoken and written communication skills
- Experience of SaaS (Software as a Service) environments
- Exposure to RESTful web APIs and a service oriented architecture
- Experience in Linux environments, Shell scripting etc
- Working with XML and JSON including parsing, asserting / matching and extracting
- Experience with Continuous Integration environments and build tools, including Terraform, Jenkins, Maven, Gradle and Ant
- Experience with messaging systems such as Apache Kafka, Amazon Kinesis, Amazon SQS and Rabbit MQ
- Experience working on Live platform SDKs such as Twilio, AWS Elemental
- A minimum of 3 years experience as a Technical Lead in Java., Strong experience in design and implementation of high performing and highly scalable websites/applications
- Strong experience in Spring MVC framework and experience in design patterns, unit testing etc..
- Strong experience in AWS services such as EC2, Lambda, S3, ECS, API Gateway and using tools such as Terraform, Ansible
- Strong experience in Endeca, ATG and BCC, Solr, any Headless CMS
- Considerable experience in databases such as SQL Server/Mongo DB is an added advantage
- Good experience in JavaScript frameworks such as Angular/React/VueJS is an added advantage
- Experience in Adobe AEM is an added advantage
- Creative problem-solving skills and ability to effectively communicate and translate feedback, needs and solutions
- Excellent verbal and written communication skills required
- Provide strategic thinking and leadership pertaining in cloud technologies and building scalable websites
- Provide technical leadership and guidance internally to the team and externally to management
- Communicate effectively across all levels of the organization
- Collaborate within and across teams with strong teamwork orientation
- Help maintain a culture of high quality
- Showcasing excellent work ethic and strong sense of ownership of end result
- Understand the structured software development methodologies including design, development and testing in an Agile environment
- Follow all security practices and identify areas and processes where performance and scalability can be improved
- Make and justify recommendations for improvement., Participate in development of solutions in cases of new technology direction and/or proof of concepts
- Should translate business needs into technical solutions with Strong analytical, conceptual and technical skills
- Support the evaluation, selection, design, development and maintenance of the platforms.


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Total of 3-5 years of experience building cutting-edge products.
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Must have a degree in Computer Science or a related field. Strong understanding of object-oriented programming, concurrency, and fundamentals of computer science.
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Technically Hands-on, prior experience with scalable Architecture.
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Bring 3-5 years of software engineering and product delivery experience, with a strong background in algorithms.
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Excellent command over Data Structures and Algorithm Proficiency in implementation of algorithms and use of advanced data structures to solve problems in computing
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Exceptional coding skills in an Object-Oriented programming language (Python preferred with Django framework).
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Strong problem-solving and analytical skills.
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Experience with web technologies Java/Python, Linux, Apache, MySQL, solr, memcache, redis.
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Experience in architecting & building real-time, large-scale e-commerce applications.
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Experience with high-performance websites catering to millions of daily traffic is a plus.
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Java/ Python, MySQL, Redis, ElasticSearch, Problem Solving, Scalability, Design Patterns, Distributed System
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Develop complex software products that include scale, algorithmic complexity, and a huge amount of data.
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Build cutting-edge scalable systems by writing simple and efficient code.
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Code, develop, design, and architect features related to the existing application. We expect you to own modules end to end and take pride in the work products you ship
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Contribute to all aspects of an agile software development lifecycle including design, architecture, development, documentation, testing, and operations.
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Design, implement, and maintain highly scalable, multi-tier, distributed server software applications
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Deliver across the entire app life cycle, design, build, deploy, test, release to app stores, and support
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Working directly with developers and product managers to conceptualize, build, test, and release products
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Take responsibility for performance and stability for all server functions
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Continuously discover, evaluate, and implement new technologies to maximize development efficiency



