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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Skills Required:
- Experience of more than 4 to 6 years in software development.
- Very Strong Experience in Core Java.
- Excellent Java Programming skills Experience in Data Structures, Algorithms and Design Patterns.
- Strong in Problem solving, Analytical skill and logical thinking.
- Skill to be trained: java, spring, mango db, cassandra.
- Strong experience in Spring Boot, Restful API
- Looking for shorter notice period candidates only.
As the Java Developer, you will be responsible for developing cutting edge health-tech applications that include high scale transaction processing, intelligent bot based programs and data analytics.
What you will do:
- Building components for the company's advanced health tech platform using Java, Solr, SpringBoot, DialogFlow
- Communicating effectively in a cross-functional product development team and present ideas and solutions effectively
- Participating in technical planning and requirements gathering phases including design, code, test, troubleshoot, and document engineering software applications
- Developing the Code as per the requirements
- Working with product team and constructing the tech roadmap
- Designing, building and scaling the company's backend microservices
- Maintaining code integrity and organization
- Applying all quality requirements to make the code production ready
- Developing and deploying new features to facilitate related procedures and tools if necessary
- Developing documentation related to technical aspects and to facilitate current support, development, upgrades, or migrations
- Designing and building efficient, reusable, and reliable Java code
- Pro actively catching and fixing bugs, and providing support for the back end services
- Managing servers and infrastructure by keeping the lights on and refining the deployment architecture
What you need to have:
- Expert at hands on programming in JAVA and J2EE
- Must be from Product based companies (Should have developed Web Apps)
- Proven expertise in Java interfaces with MongoDB (or similar noSQL databases) as well as relational databases (mySQL, Postgres etc)
- Key contributor in atleast one 6+ months development project involving SpringBoot and Hibernate
- Strong understanding of application server infrastructure
- Good working knowledge of Maven based build systems
- Good understanding of build and deployment pipelines that involve ANT and Jenkins
- Proficient understanding of code versioning tools, such as Git or SVN
- Good knowledge of working on Rest APIs , Webservices
- Excellent problem-solving skills
- Hands on experience with Lucene/Solr
- Familiarity with DiagFlow based chat bot building
- Knowledge of NLP
- Learnt AI/ML systems
- Excellent interpersonal skills and the ability to build good working relationships.
- Must be self-motivated to prioritize and manage workload and meet critical project milestones and deadlines.
- Able to effectively collaborate with a team as well as take initiative and work independently to solve problems
- Java / J2ee Development environments
- Eclipse or similar tooling
- Very Strong Web front end development including JavaScript, Angular, React, etc.
- Develop REST based microservices using Spring, SpringBoot, SpringCloud, SpringListener, SpringMVC, JavaScript, HTML, XML, JUNITS Cloud, container image development and container orchestration
Skills Required:
- Angular, Spring Springboot, SQL Server
Experience Preferred:
- Looking for a full stack developer with Strong Front end experience, Spring Springboot, SQL Server, GCP
Amplify looking for a Junior-Mid Java Developer for its backend platform development, responsible for developing of
micro services using Spring Boot, RESTful Services, Cloud and Container based solutions. Working closely with the
members of the UK team as well as the technical lead, the Senior Java Developer role at Amplify will be responsible for
development of the Amplify Backend platform while maintaining high-quality, robust, performance software which
meets the needs of our business and clients.
Key Areas of Responsibilities
• Functional features development of Amplify backend RESTful web services using Spring Boot.
• Ensuring coding standard, micro service system architecture is well-maintained as per standards and core
principles of business.
• Working closely with remote Product, BA and Technical teams to ensure product requirements are met.
• Working closely with members of the team to complete the tasks on time and high quality.
• Keeping current with new technologies and making recommendations to the team while maintaining and
enhancing existing product code base.
• Working with members of the QA, DevOps and delivery teams to ensure products are tested, installed and
maintained to a high standard.
• Maintaining high quality coding standards within the team and support team in code and design reviews.
• Working closely with Technical Lead to ensure dev tasks completed on-time.
• Responsible for building TDD documents, UML and functional specification documents.
Key Requirements
• At least 2+ years’ commercial experience in Java based technologies and RESTful web services. Solid Hands-on
experience of Java/J2EE and Spring Boot or Spring Framework.
• Experience in Java, its core libraries and any of open source frameworks such as Spring Boot, Spring
Integration as well as Gradle, Maven etc.
• Experience of RDBMS and SQL Knowledge as well as NoSQL databases (Highly Desirable).
• Demonstrable knowledge of at least one of software development methodology (Agile Kanban/Scrum, Agile
SAFe) and structured approaches to development. Capable of working to strict deadlines.
• Experience in working with Spring framework and cloud-based technologies like AWS. Always open to adopt
to new technologies, techniques and standards.
• Understands DevOps culture and develop software with CI/CD pipeline in-mind.
• Self-motivated, pro-active and working with the other team members in taking up initiatives appropriate to
the business and the team.
Job Title: Senior Java Developer
Department: Technology and Research
Reports to: Technical Lead
Context
Sampana Digital (SDPL) (http://www.sampanadigital.com">www.sampanadigital.com) is a digital technology company that provides end-to-end product engineering and digital transformation services. Our engineering services includes web & mobile application development, user experience design, cloud, testing and infrastructure managed services to transform businesses digitally. We also enable enterprises with contextual and personalized two-way multi-channel mobile communications, including SMS, voice, email and PWA technology.
We believe in small teams of smart, committed, and diverse individuals coming together and form a breakthrough insight. We are a team of passionate professionals to craft an unbeatable culture and services.
Come and join us!
Role Description
We are looking for a Senior Java Developer with experience in building high-performing, scalable, enterprise-grade applications.
You will be part of a talented software team that works on mission-critical applications, and your roles and responsibilities include managing Java/Java EE application development while providing expertise in the full software development lifecycle, from concept and design to testing.
Job Responsibilities:
- Work with and direct the team’s software engineers in setting the standards for coding, testing and software quality
- Collaborate closely with the team’s BAs on the efficient transition of BDD’s and Swaggers to the engineers as part of the overall workflow.
- Oversee and manage the scope, timeline, and goals forth delivery of working software
- Oversee and assist in the production of comprehensive documentation
- Oversee and provide support to production cutovers and migrations as required
- Lead the analysis and resolution of technical and application problems
- Supporting the Scrum Master
- Participate in and support backlog grooming, sprint planning, daily stand-ups, reviews, retrospectives, release planning, demos and other Scrum related meetings
- Provide clear reporting on the status of the scope, timeline and progress for the delivery of working software
- Assist in setting up a robust out of hours support process
- Assist in the prioritisation of bugs and defects
- Providing Guidance and Mentoring
- Participate in peer reviews of solution designs and related code
- Provide technical leadership to the teams’ software engineers through coaching and mentorship
- Identify and encourage areas for growth, education and development within the team
General
- Self-Starting Leader capable or working under pressure
- Curious and engaged in Continuous Learning and Professional Development
- Strong DevOps experience
- Java and Spring Developer with +5 years’ experience with the following skills
- Java 1.8+
- Spring
- Microservices with Spring-boot
- Spring cloud config
- Unit tests with Spring-boot
- Docker
- Openshift/Kubernetes
- Basic understanding of API gateways
- OpenAPI (Swagger) specification.
Understanding of basic networking concepts
- Integration into backends via various protocols (SOAP,REST, XML-RPC etc)
- CI/CD (Jenkins, pipelines etc)
The following additional skills would be advantageous:
- Spring reactive
- APIGEE
- Azure DevOps
- Pivotal Kubernetes
- Linux
- Azure Pipelines
Be Part Of Building The Future
Dremio is the Data Lake Engine company. Our mission is to reshape the world of analytics to deliver on the promise of data with a fundamentally new architecture, purpose-built for the exploding trend towards cloud data lake storage such as AWS S3 and Microsoft ADLS. We dramatically reduce and even eliminate the need for the complex and expensive workarounds that have been in use for decades, such as data warehouses (whether on-premise or cloud-native), structural data prep, ETL, cubes, and extracts. We do this by enabling lightning-fast queries directly against data lake storage, combined with full self-service for data users and full governance and control for IT. The results for enterprises are extremely compelling: 100X faster time to insight; 10X greater efficiency; zero data copies; and game-changing simplicity. And equally compelling is the market opportunity for Dremio, as we are well on our way to disrupting a $25BN+ market.
About the Role
The Dremio India team owns the DataLake Engine along with Cloud Infrastructure and services that power it. With focus on next generation data analytics supporting modern table formats like Iceberg, Deltalake, and open source initiatives such as Apache Arrow, Project Nessie and hybrid-cloud infrastructure, this team provides various opportunities to learn, deliver, and grow in career. We are looking for innovative minds with experience in leading and building high quality distributed systems at massive scale and solving complex problems.
Responsibilities & ownership
- Lead, build, deliver and ensure customer success of next-generation features related to scalability, reliability, robustness, usability, security, and performance of the product.
- Work on distributed systems for data processing with efficient protocols and communication, locking and consensus, schedulers, resource management, low latency access to distributed storage, auto scaling, and self healing.
- Understand and reason about concurrency and parallelization to deliver scalability and performance in a multithreaded and distributed environment.
- Lead the team to solve complex and unknown problems
- Solve technical problems and customer issues with technical expertise
- Design and deliver architectures that run optimally on public clouds like GCP, AWS, and Azure
- Mentor other team members for high quality and design
- Collaborate with Product Management to deliver on customer requirements and innovation
- Collaborate with Support and field teams to ensure that customers are successful with Dremio
Requirements
- B.S./M.S/Equivalent in Computer Science or a related technical field or equivalent experience
- Fluency in Java/C++ with 8+ years of experience developing production-level software
- Strong foundation in data structures, algorithms, multi-threaded and asynchronous programming models, and their use in developing distributed and scalable systems
- 5+ years experience in developing complex and scalable distributed systems and delivering, deploying, and managing microservices successfully
- Hands-on experience in query processing or optimization, distributed systems, concurrency control, data replication, code generation, networking, and storage systems
- Passion for quality, zero downtime upgrades, availability, resiliency, and uptime of the platform
- Passion for learning and delivering using latest technologies
- Ability to solve ambiguous, unexplored, and cross-team problems effectively
- Hands on experience of working projects on AWS, Azure, and Google Cloud Platform
- Experience with containers and Kubernetes for orchestration and container management in private and public clouds (AWS, Azure, and Google Cloud)
- Understanding of distributed file systems such as S3, ADLS, or HDFS
- Excellent communication skills and affinity for collaboration and teamwork
- Ability to work individually and collaboratively with other team members
- Ability to scope and plan solution for big problems and mentors others on the same
- Interested and motivated to be part of a fast-moving startup with a fun and accomplished team
Job location Bangalore, Gurgaon
Notice period- 30 days
Job Role/ Your future duties and responsibilities :
- To develop IDM application using Sailpoint and Java, participate in requirement Analysis and Design, Perform Unit testing, provide 3rd Level Support for Sailpoint applications.
Required qualifications to be successful in this role :
- Primary Skill : Sailpoint Development, Java Development
- Secondary Skill : Identity & Access Management concepts
- 2-6 Years of experience in designing and implementing Identity and Access Management systems using Sailpoint.
- Good hands on experience with SailPoint IIQ 7.0
- Very good Java programming skills
- Should have understanding of Code deployment process
- Should have exposure in agile projects
- Should have knowledge on Code Deployment Process
- Required extensive troubleshooting experience to provide L3 Support.
- Should have good understanding of Identity & Access Management concepts
- Knowledge on any other IAM tools are added advantage
Job Description :
Hiring for Staff Engineer (Back end) for a leading product based company at DLF IT Park, Chennai.
Skill Set :
- Strong Experience in any Programming language (Ruby, Go, Java, or other high-performance languages), Architecture, Design (HLD/LLD), Data structures, Algorithms, Hands-on Coding, Problem Solving, etc
- Experience in Web Technology is Must.
- Looking for candidates with good experience in product development.
- Candidates from product development companies will be preferred.
- Candidates willing to relocate/preferring Chennai can apply.
Responsibilities :
- Analyze and drive product requirements
- Architect and design product features for scale and maintainability
- Lead in the design, implementation, and deployment of successful systems and services
- Ensure the quality of architecture and design of systems
- Implement code with very high coverage of unit tests and component tests
- Perform design and code reviews
- Functionally decompose complex problems into simple, straight-forward solutions
- Fully and completely understand system interdependencies and limitations
- Possess expert knowledge in performance, security, scalability, architecture, and best practices
- Software development of high quality/availability core systems
- Cross-training peers and mentoring teammates
- Document HLD/LLD for easy knowledge sharing and future scaling
Must have :
- 8-12 years of experience designing, integrating and developing distributed applications in Ruby, Go, Java, or other high-performance languages
- Experience with cluster and container orchestration systems such as Docker, Mesos, Marathon, Salt or Kubernetes.
- Experience with Service design, systems engineering, API Design and versioning
- Understanding of Design Patterns, Serverless computing, cloud-first architecture, TDD, BDD, CI/CD, Integration Patterns
Good to have :
- Experience building distributed systems using Kafka. Strong grasp of fundamental concepts of Kafka, ZooKeeper and building producer and consumer applications using Kafka
- Familiarity writing and optimizing advanced SQL queries
- Good Linux/UNIX systems knowledge
- AWS compute and storage PaaS services. AWS certified solutions architect nice to have.
- Experience productionizing Machine Learning models
- Experience publishing technical papers in reputed conferences.







