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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We are looking for a focussed, energetic and motivated Senior Java Developer. You must have sufficient experience in Java Development, Spring, Spring Boot, AWS and SQS, S3. You will be challenged with complex and robust product development.
As a Senior Java Developer, you will be the most senior developer within the company working alongside other Java Developers, the Engineering Manager, and the CTO.
Senior Java Developer requirements
Solid development experience using Java, Springboot, SQS, S3 and Microservices
Experience working in Swing Java framework
Revises, updates, refactors, and debugs code
Write clear, concise and efficient code and ensure it is fully tested
Service and develop features using Java with AWS, JUnit, SQL and Spring framework
You have a good knowledge of Cloud technologies (ideally AWS)
Participate in peer coding reviews and work in a collaborative, agile environment
Demonstrate technical knowledge and expertise with a clear understanding on the products' technical composition
Senior Java Developer responsibilities
7-9 yrs minimum work experience
Excellent analytical, troubleshooting, and communication skills
Excellent attention to detail and time-management skills
Serves as an expert on developed applications
Ability to adapt and learn new product/technology is key
Collaborates with internal teams to produce software design and architecture
Knowledge of Agile frameworks (i.e. Scrum) and has worked with Jira or Spira
Attend daily stand-up meetings alongside the Scrum Master
A self-starter, hardworking and committed individual
Work UK hours - ideally 9.00am - 6pm with the expectation to work out of ours when needed
Required Education:
B.Tech./ BE - Computer, IT, Electronics only
Required Skills:
- 3+ year of experience in Development in JAVA technology and springboot
- Strong Java Basics
- SpringBoot or Spring MVC
- Hands on experience on Relational Databases (SQL query or Hibernate) + Mongo (JSON parsing)
- Proficient in REST API development
- Messaging Queue (RabitMQ or Kafka
- Any Caching Mechanism
- Good at problem solving
Good to Have Skills:
- 4+ years of experience in using Java/J2EE tech stacks
- Good understanding of data structures and algorithms.
- Excellent analytical and problem solving skills.
- Ability to work in a fast paced internet start-up environment.
- Experience in technical mentorship/coaching is highly desirable.
- Understanding of AI/ML algorithms is a plus.
This role isn't limited to the software development or support, it involves less coding but more Consulting, Architectural designing/High Availability system designing, Solutioning, Migration, Optimization, customer handling, etc.
MongoDB is expanding our global team of consulting engineers and is building a new team to deliver remote consulting services to further our ongoing plans for worldwide growth!
MongoDB Professional Services works with customers of all shapes and sizes in all verticals, from tier-1 banks to small web startups, on a variety of interesting use cases from e-commerce platforms to trading systems to social media applications. Solve interesting problems, gain incredible cross-stack experience, work with the best and brightest people in the business, network with industry leaders, and see new places - all in a day’s work!
MongoDB consulting exists to support the development of our customers’ vision, accelerate customers’ time to value, and drive a multitude of customer adoption scenarios - from building new solutions to modernizing legacy applications or migrating to cloud. Our consulting solutions ensure that organizations get the best out of MongoDB.
Be one of the recognized experts in this rapidly growing field in a high-growth software company successfully challenging the status quo of the database industry.
Shift Timing
You will get an opportunity to work with Global customers (APAC, EMEA, and North America) So this would require you to work in monthly rotational shifts.
We will be providing Cab for the pick-up & Drop, (Night Shift Allowances will be given & Cab’s aren’t chargeable)
Candidate Profile
We are looking for candidates who have a **strong development background along with Systems Architecture experience and want to make their career in Consulting Engineering,** This role isn't limited to the software development or support, it involves less coding but more Consulting, Architectural designing/High Availability system designing, Solutioning, Migration, Optimization, customer handling, etc. The ideal candidate should be a highly technical individual, with strong problem-solving and communication skills, and comfortable working remotely to match customer time zones for our Atlas customers.
Our ideal candidate will have
* Excellent analytical, diagnostic skills, and problem-solving skills
* High motivation for a role that combines deep technical and customer-management dimensions
* Confidence speaking and presenting in a collaborative customer setting
* **5+ years of software development/consulting/support experience**, preferably in a number of distinct industries/verticals
* Familiarity with enterprise-scale software architectures, application development methodologies, and software deployment and operations
* Competence in at least one of the following languages (in no particular order): Java, C++, C#, Python, Node.js (JavaScript), Ruby, Perl, Scala, Go
* Experience with databases such as MongoDB, Oracle, MS SQL Server, PostgreSQL
* Familiarity with Linux diagnostics and tuning; Windows tuning knowledge is a plus
* Experience working with public cloud technologies specifically AWS, Azure & GCP
* Should be ready to and comfortable working in shifts to match the customer time zone/s during the working week
**Position Expectations**
* **As a core member of the MongoDB Professional Services team, you will Contribute to helping migrate customers from self-hosted MongoDB on-prem/cloud to Atlas**
* Contribute to customer implementations at any or all phases of the application lifecycle: portfolio assessment, application planning, and design, deployment architectures, development and build, integration and release configuration, system testing, production operations, application optimization, and best practices adoption
* Work as part of a wider delivery team comprising fellow consulting engineers, project managers, and account teams
* Cultivate your individual MongoDB reputation as a trusted advisor to guide MongoDB and our customers into the future
* Partner with Product and Engineering teams to influence the direction of the MongoDB product roadmap
**Success Measures**
**As a Consulting Engineer you will be successful in this role when you can execute the following**
Become a field expert in “everything MongoDB”
Communicate complex technical proposals simply and convincingly to a wide range of audiences
Gain a reputation as a trusted advisor with your clients, large and small
Ensure your client’s success with their MongoDB endeavors
Maintain the required level of billable utilization
Influence MongoDB product development by contributing experience from the field
Successfully communicate the product roadmap to external clients
Constantly work on improving yourself, our products and our team
Do you know, Why MongoDB is a fantastic place to work and build your career?
Disrupting a $64 Billion market
Top NoSQL database in the world
Largest Ecosystem and the fastest growing database in the world
Close to 17,000 customers in over 100 countries and over 90+ million downloads
120% net ARR expansion rate over each of the last twenty quarters
Sequoia Capital and a number of other Top VC firms have invested in MongoDB. Sequoia Capital calls us out as one of their flagship portfolios; Sequoia has also invested in Apple, Google, Youtube, and WhatsApp
9-figure revenue company, with very high double-digit growth rates
Be a part of the company that’s reinventing the database, focused on innovation and speed
Enjoy a fun, inspiring culture that is engineering focused
Work with talented people around the globe
Learn, contribute, and make an impact on the product and community
**Life at MongoDB**
**Our India office culture**
180+ people, with teams in Sales, Engineering, HR, Finance, IT & Marketing
Regular group outings and opportunities to get to know your colleagues
Employee affinity groups
Our Benefits
**Competitive salary and EQUITY**
Comprehensive Health cover, dental cover, travel insurance & Life Insurance.
Free lunch twice per week and a fully stocked kitchen with healthy and sweet treats
Macbooks are company standard
**26 weeks Maternity & 20 Paternity leave** to spend time with new arrivals
*MongoDB is an equal opportunities employer*
Job Description:
- Must have experience of 1 – 6 years.
- Experience in Java/J2EE platform.
- Experience in web application development with JSP, Servlet, Spring Boot, Hibernate
- Knowledge of MySQL database.
- Developed REST and SOAP web services..
- Experience in version control system and build tool
- Must have completed BE/MCA/M.Sc/MTech.

We are looking for talented and self-motivated engineers to come join us on our mission.
We have a team culture that encourages collaboration and innovation at all levels and we expect developers to take a high level of ownership for the execution of tasks assigned to them.
Roles and responsibilities:
● Understand and derive requirements from product managers and customers
● Able to design APIs and modules for scale.
● Participate in design reviews and look at opportunities to continuously improve on practices
and quality.
● Own end-to-end implementation of modules and drive the project
● Debug prod issues and solve them efficiently and quickly. Customer obsession is key
● Automate recurring day-to-day tasks.
● Show initiative to drive topics to resolution and able to collaborate with multiple teams in
delivering the project
● Mentor junior team members
● Own project deadlines and seeing through project go-live.
Job Requirements Skills
● Good problem-solving skills and ability to understand and use the right data structures and algorithms
● Use design patterns and best engineering practices to design scalable and extensible
solutions. Working knowledge of microservices and/or event-driven architecture is plus
● Working knowledge of relational databases esp PostgreSQL.
● Advanced expertise in Java/server-side technologies. Working knowledge of Spring Boot is desirable
● Should have designed and implemented REST APIs. Good working knowledge of HTTP(S),Web servers desired
● Should have worked in Linux environments and understanding of GIT or any other source code versioning is a must
● Understanding of ORMs, Caching, Object storage, Queues is a must. Exposure to AWS S3, SQS components, Redis is a plus
● Own and write tests using Unit and integration testing frameworks
● Ability to work independently and/or with a team in a fast-paced, rapidly changing
environment
● Should do code reviews.
● Server-side application deployment experience is a plus.
Qualifications
● Experience - A minimum 6+ yrs of relevant experience.

- Strong experience in Java Development
- Deep expertise and hands-on experience with Web Applications
- Expertise in Java, Spring Boot is an added advantage.
- Experience in Microservices
- Hands-on design experience with Web Services (REST, SOAP, etc ..).
- Strong grasp of security principles.
Nice to Have
- Spring Zuul
- Kafka
- cryptography and certificates
Abilities:
- Developer with strong ability to develop web applications using Java
- Should be able to Code, design, and implement
- Maintain code integrity and organization
Designation - Principal Software Engineer
About Livspace:
Livspace is India’s trusted interior design and renovation platform that connects interior designers, homeowners and vendors. For homeowners, Livspace is their one-stop destination for all things interior. For interior designers and vendors, we’ve streamlined their workflow from design all the way to delivery through powerful and innovative technology.
We’re currently in nine Indian metro areas. We’ve made over 20,000 customers happy by delivering their dream homes to them. With over 3,500 interior designers on board, we’re the largest design community India has seen. We employ over 2000 passionate individuals who continue to grow and be a part of this exciting journey.
Working at Livspace:
Livspace believes in an open, intellectually honest culture where everyone is given the autonomy to contribute and do their life’s best work. As a part of the dynamic team at Livspace, you will have a chance to learn new things, solve new problems, build your competence and be a part of an innovative design-and-tech startup that’s revolutionizing the interiors industry.
If you value autonomy, enjoy challenges, believe in getting things done and can work with minimal supervision, come join us
As a Principal Software Engineer you will:
- Design, implement and enhance new components of the Livspace design platform and supply chain platform.
- Design new features for the e-commerce properties and front-end products and mobile apps
- Maintain engineering infrastructure
- Have significant impact on current and future technology roadmap
- Complete ownership of Service/Services that your team is responsible for
- Lead by example, mentor and guide team members on everything from structured problem solving to development of best practices
- Own large technical deliverables and execute in an exemplary way
- Be able to conceptualize and develop prototype quickly
- Contribute creatively in strategic products that will reach large audience
- Build a web product that users love.
Who you are :
- Deep expertise with any or combination programming languages: Java, Python NodeJS any Object oriented high level proprietary or open source language with strong programming constructs ( Java Preferred ).
- Substantial experience in building complex and scalable solutions.
- Strong object oriented design skills, ability to apply design patterns, and an uncanny ability to design intuitive module and class-level interfaces
- The ability to do deep problem solving and build elegant, maintainable solutions to complex problems.
- Experience leading multi-engineer projects and mentoring junior engineers
- You earned B.Tech or equivalent degree in computer science or related engineering field
- You have at least 6+ years of experience working with large scale web products
Your Array (Nice to Have) :
- Good sense of system characterization and identification of technical requirements
- Good learnability and adopt technologies that help build large scale, performant, reliable and sustainable systems.
- Architectural & Design Choices, Deep knowledge on one or more tech stacks, identify alternative tech choices and trade-offs
- Strong problem Solving skills, Identify feasible alternatives and freeze on the optimal choice of data structures and advanced algorithms
- Ability to work in fuzzy environments and complex environments
- Able to take high ownership of complex system components and drive it to the next level
- Good exposure both with tech breadth and tech depth
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applications in support of end user’s requirements. Works on problems of relatively |
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complex scope, through general usage of standard concepts and principles and |
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applications of own judgement. Responsible for delivering results that have direct impact |
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on the achievement of results within the job area as an Individual Contributor. |
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Responsible for driving and leading the analysis, design, development activities on |
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assigned projects. |
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- Involved in entire SDLC lifecycle including analysis, development, fixing and monitoring of issues on the assigned product lines.
- Meets and exceeds standards for the quality and timeliness of the work products.
- Implements, unit tests, debugs and leads integrations of complex code.
- Identify opportunities for further enhancements and refinements to best practices, standards and processes.
- Ensure robust, securely accessible, highly available and highly scalable product that meets or exceeds customer and end-user expectations
Experience
Technical Duties & Responsibilities
3 – 6 Years
With 2-4 years of experience in Scalable Architecture development. We are looking for Independent Contributors, who have good understanding of Microservices based architecture, and a comprehensive awareness of various architectures & their suitability as per product requirements: -
- Can solve problems independently, be responsible for the requirement analysis and design implementation of important business modules, and be familiar with the online deployment environment, able to independently analyse and quickly troubleshoot online faults.
- Familiar with JAVA programming principles, understand their advanced features and class libraries, network and server programming, multi-threaded programming, common open source products
- Experience in SOA EIP using Apache Camel Spring Integration
- High quality coding ability, reusability, low coupling, scalability, high performance, maintainability, high security
- Have the architectural design capabilities of modules and subsystems, master common architectural design methods and patterns
- Understand SOA, event-driven, distributed system principles, large-scale network application structure, message middleware, caching, load balancing, clustering technology, data synchronization, NoSQL
- Have the project experience of RabbitMQ or Kafka
- If the candidate has air fare industry experience, might be priority
Job brief
We are looking for a 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. Java developer 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.
Java developer responsibilities include designing, developing and delivering high-volume, low-latency applications for mission-critical systems.
Responsibilities
- Contribute in all phases of the development lifecycle
- Write well designed, testable, efficient code
- Ensure designs are in compliance with specifications
- Prepare and produce releases of software components
- Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review
Requirements
- BS/MS degree in Computer Science, Engineering or a related subject
- Proven hands-on Software Development experience
- Proven working experience in Java development
- Hands on experience in designing and developing applications using Java EE platforms
- Object Oriented analysis and design using common design patterns.
- Profound insight of Java and JEE internals (Classloading, Memory Management, Transaction management etc)
- Excellent knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate)
- Experience in the Spring Framework
- Experience as a Sun Certified Java Developer
- Experience in developing web applications using at least one popular web framework (JSF, Wicket, GWT, Spring MVC)
- Experience with test-driven development






