Core Java - Multithreading, Exception handling, Garbage collection.
at 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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Job Description:
We are looking for a Senior Java Developer with strong expertise in Apache Kafka and backend systems. The ideal candidate will have hands-on experience in Java (8/11+), Spring Boot, and building scalable, real-time data pipelines using Kafka.
Key Responsibilities:
- Develop and maintain backend services using Java and Spring Boot
- Design and implement Kafka-based messaging and streaming solutions
- Optimize Kafka performance (topics, partitions, consumers)
- Collaborate with cross-functional teams to deliver scalable microservices
- Ensure code quality and maintain best practices in a distributed environment
Required Skills:
- 6+ years in Java development
- 3+ years of hands-on Kafka experience (producers, consumers, streams)
- Strong knowledge of Spring Boot, REST APIs, and microservices
- Familiarity with Kafka Connect, Schema Registry, and stream processing
- Experience with containerization (Docker), CI/CD, and cloud platforms (AWS/GCP/Azure)
Job Title: Java Developer (Immediate Joiners Only)
Experience: 5+ Years
Work Locations: Pune, Gurgaon, Noida, Bangalore, Ahmedabad
Work Mode: Hybrid
Joining: Immediate Joiners / Candidates who have completed their notice period only
About Us
At Deqode, we build high-performing engineering teams for cutting-edge technology solutions. We are currently looking for experienced Java Developers who are passionate about scalable systems, clean code, and modern architectures.
Key Responsibilities:
- Design, develop, test, and maintain Java-based applications using Java 8 and Spring Boot
- Build robust RESTful APIs and integrate with third-party services
- Work on microservices architecture, including containerization and orchestration
- Ensure the performance, quality, and responsiveness of applications
- Identify bottlenecks and bugs and devise solutions to these problems
- Participate in code reviews and contribute to technical discussions
- Collaborate with cross-functional teams to define and deliver new features
- Write unit and integration tests to maintain code quality
Mandatory Skills:
- Strong hands-on experience with Java 8 or above
- In-depth knowledge of Spring Boot and Microservices architecture
- Experience in developing RESTful APIs
- Proficient in object-oriented design principles and software design patterns
- Good understanding of databases (SQL/NoSQL)
- Familiarity with version control tools like Git
- Exposure to CI/CD practices and tools
Good to Have:
- Knowledge of containerization (Docker, Kubernetes)
- Experience with messaging queues (Kafka, RabbitMQ)
- Cloud exposure (AWS/Azure/GCP)
- Basic knowledge of unit testing frameworks like JUnit, Mockito
Position: Java Lead
Experience: 7+ Years
Location: Jaipur (Onsite)
Joining: Immediate Joiners Preferred
Employment Type: Permanent
Company: Deqode
Role Summary:
We are looking for a Java Lead to join Deqode’s backend engineering team. This role requires deep hands-on expertise in Java technologies along with the ability to lead a team and drive complex technical implementations.
Key Responsibilities:
- Take ownership as Lead Developer for backend services.
- Manage a team of 5-7 Java developers; mentor and guide juniors.
- Perform code reviews and ensure adherence to coding best practices.
- Contribute in writing clean, testable, scalable code using Java and Spring Boot.
- Own and drive technical design discussions and implementations.
- Work with cross-functional teams: Frontend, QA, DevOps, Product, and 3rd parties.
- Ensure robust unit testing, code coverage, and maintain high quality deliverables.
- Troubleshoot defects and support production deployments.
Required Skills:
- 7+ years of Java development experience
- Expertise in Spring Boot and REST APIs
- Strong experience in Microservices Architecture
- Knowledge of Netflix OSS or Spring Cloud
- Proficient in writing JUnit test cases
- CI/CD pipeline experience in real-time projects
- Understanding of Docker and Kubernetes
- Exposure to AWS Cloud Services from a development perspective
Job responsibility The Lead Developer contributes, to create a customer’s solution, in the building phase of the software development lifecycle. The Software Engineer is responsible for performing the detailed design of application and technical architecture components and classes in accordance to the specification provided by the Solution Architect, for coding of SW components, and for the early testing phases (component testing), and system testing support
Should have handled and leaded a team of front end and back developer and deliver projects on time.Hands on experience in Java, Python, scripting
- Design, implement, deploy and support web-based applications and web services using server technologies stacks that include Java, MySQL
- Experience in Java/J2EE using web frameworks Play or Spring boot, REST API Development and ORM (JPA, Hibernate eBean etc.)
- In depth knowledge of Design patterns and Data structures
- Databases - MySQL, Oracle, SQL
- Solid understanding of concepts like Web Services, SOA, REST APIs, Message Queue, Caching, Distributed/Scalable Architecture
- Secure application development best practices, such as OWASP
- Document and maintain all design documents and involve in review process.
- Experienced problem solving and debugging skills.
- Good verbal and written communication and interpersonal skills
- Experience in Agile methodology is added advantage
- Knowledge of Cloud Knowledge /Azure
- Must know about Unix knowledge
- experience in Elastic search
● Proven work experience as a Back-end developer.
● In-depth understanding of the entire web development process (design, development and deployment).
● Proficient in Java, with a good knowledge of its ecosystems
● Basic understanding of JVM, its limitations, weaknesses, and workarounds
● Ability to decide when to use relational vs NoSQL databases and must be experienced with at least one of
the relational databases (MySQL) as well as experience with ElasticSearch will be good to have
● Familiarity with concepts of MVC, JDBC, and RESTful
● Experience with Spring, Spring Boot, Spring MVC
● Experience in CI/CD and Cloud technologies
● Expertise in developing enterprise-level web applications and RESTful APIs using MicroServices, with
demonstrable production-scale experience
● Familiarity with front-end languages (e.g. HTML, JavaScript and CSS) - Not mandatory
● Participation in coding competitions such as hackathon, hackerrank will be added advantage.
Zycus is looking for a Senior Software Engineer to join it's Engineering team. Candidates with experience working on Spring, Hibernate, Microservices, Angular/react, JMS/Rabbit MQ/Kafka, AWS Cloud and are passionate about building a product are encouraged to apply. Zycus is a Global leader and a pioneer in cognitive procurement software. Our clients are among the fortune 500 companies. We build enterprise AI procurement software product using some of the latest technologies.
In this role, you will work in developing a product which is not only recognized by Gartner as one of the top Source To Pay procurement software but is also industry's only organically-built & integrated source-to-pay suite.
Role and Responsibilities:
The Engineering team is looking for collaborative, passionate, and adaptable Senior Software Engineer.
- Strong coding experience of about 5-9 years.
- A team of experienced engineers with lots of interesting challenges to dive into.
- Modern technology stack: Cloud, Machine Learning, Artificial Intelligence, Microservices etc.
- Experience working on Spring, Spring Boot, Hibernate, Microservices, Angular/react, JMS/Rabbit MQ/Kafka, AWS Cloud.
- Should be able to build solution which is easily scalable, high speed/ real-time performance, configurable, deploy-able and secure in SaaS environment using any open source tech stack.
- Build features and modules from scratch & Maintain existing features and modules.
- Should be able to identify, track and mitigate risks to the product.
- Ability to work independently.
Requirements
- 5-9 years’ experience in Java, J2EE and associated technologies (Spring, Hibernate, Web Services, Micro Services, Spring boot)
- Technical Skills: Core Java, Advanced Java, J2EE, Exception handling, Collections, Oops, UML, Oracle, Jenkins, Maven & Linux
- Should be able to build solutions which is easily configurable, deploy able and secure in SaaS environment.
- Must have worked spring boot Extensively.
- Strong hands on development experience in Java, J2EE.
- Should be able to identify, track and mitigate risks to the product
- Responsible for planning product iterations & releasing iterations on schedule.
What should you have:
- Product development experience in agile environment will be a big plus though not mandatory.
- Highly Tech Savvy and hands-on.
- Strong evidence of a solution/product created ground up.
Product Development:
- Has in-depth knowledge on technology and end to end development processes.
- Has the ability to recommend new processes/alternatives to meet Product Development requirements and rolling them out.
Benefits
Five Reasons Why You Should Join Zycus
1. Cloud Product Company: We are a Cloud SaaS Company and our products are created by using the latest technologies like ML and AI. Our UI is in Angular JS and we are developing our mobile apps using React.
2. A Market Leader: Zycus is recognized by Gartner (world’s leading market research analyst) as a Leader in Procurement Software Suites.
3. Move between Roles: We believe that change leads to growth and therefore we allow our employees to shift careers and move to different roles and functions within the organization
4. Get a Global Exposure: You get to work and deal with our global customers.
5. Create an Impact: Zycus gives you the environment to create an impact on the product and transform your ideas into reality. Even our junior engineers get the opportunity to work on different product features.
About Us
Zycus is a pioneer in Cognitive Procurement software and has been a trusted partner of choice for large global enterprises for two decades. Zycus has been consistently recognized by Gartner, Forrester, and other analysts for its Source to Pay integrated suite. Zycus powers its S2P software with the revolutionary Merlin AI Suite. Merlin AI takes over the tactical tasks and empowers procurement and AP officers to focus on strategic projects; offers data-driven actionable insights for quicker and smarter decisions, and its conversational AI offers a B2C type user-experience to the end-users.
Zycus helps enterprises drive real savings, reduce risks, and boost compliance, and its seamless, intuitive, and easy-to-use user interface ensures high adoption and value across the organization.
Start your #CognitiveProcurement journey with us, as you are #MeantforMore
Click here to Apply :
https://apply.workable.com/zycus-1/j/A236ED266C/">Senior Software Engineer - Zycus (workable.com) - Pune.
https://apply.workable.com/zycus-1/j/B03314F49F/">Senior Software Engineer - Zycus (workable.com) - Mumbai.
Must Haves
- Programming experience with at least one modern language such as Java, C++, or C# including object-oriented design
- 1+ years of experience contributing to the architecture and design (architecture, design patterns, reliability, and scaling) of new and current systems.
- 4+ years’ work experience in software development
- BS degree or higher in Computer Science, Engineering or related field
- Understanding of operating system fundamentals (Linux)
- Understanding of scalable computing systems, software architecture, data structures, and algorithms
- Knowledge of professional software engineering best practices for the full software development life cycle
- Strong verbal and written communication skills
- Strong analytical skills, with excellent problem solving abilities
- Working experience with Kubernetes
- Experienced working with distributed databases at scale
Good to haves
- Experience in developing software using AWS native services & technologies.
- Experience taking a lead role in building and operating scalable distributed systems
- Experience in Agile/SCRUM enterprise-scale software development
- Familiar with building secure software using modern security principles
- Demonstrated ability to achieve goals in a highly innovative and fast-paced environment
Why us
We're hiring a set of highly skilled, enthusiastic, and passionate people who thrive in a high-growth environment. We believe the best way to grow is to give everyone the opportunity to pursue their interests. At Lucidity, you have complete freedom to work on projects that interest you. Plus, with benefits like flexible hours, company offsites, unlimited leaves, we ensure you enjoy the journey as much as we do. We are also offering healthy founding team ESOP's.
An ideal candidate must possess excellent Logical & Analytical skills. You will be working in a team as well on diverse projects. The candidate must be able to deal smoothly and confidently with the Clients & Personnel.
Key roles and Responsibilities:
⦁ Able to design and build efficient, testable and reliable code.
⦁ Should be a team player sharing ideas with the team for continuous improvement and development process.
⦁ Good Knowledge on Spring Boot, Spring MVC, J2EE and SQL Queries.
⦁ Stay updated of new tools, libraries, and best practices.
⦁ Adaptable, Self-Motivated, must be willing to learn new things.
⦁ Sound Good knowledge on HTML, CSS, JavaScript.
Basic Requirements:
⦁ Bachelors' Degree in Computer Science Engineering / IT or related discipline with a good academic record.
⦁ Excellent communication skills and interpersonal skills.
⦁ Knowledge on SDLC flow from requirement analysis to deployment phase.
⦁ Should be able to design, develop and deploy applications.
⦁ Able to identify bugs and devise solutions to address and resolve the issues.
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Expert knowledge of computer science, with strong competencies in data structures, algorithms,
and software design.
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Strong understanding of end-to-end architectures and development frameworks; knowledge
across tiers in a multi-tier cloud environment including load balancers, web servers, application
containers, data stores, and distributed caches.
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Minimum 6 years of experience with deep technical knowledge and hands on skills in Java.
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Has worked extensively on caching technologies such as Redis, memcache.
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Should be strong with Data Strcutures, Algorithms & OOPs concepts.
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Worked on NoSQL databases such as MongoDb.
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Designed and developed highly scalable multi-threaded large scale distributed systems.
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Well versed with services and micro-services architecture.
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Usage of containers, virtual machine systems, cloud computing.
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