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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- 6-9 years of strong development skills in Java JDK 1.8 or above.
- Experience in developing micro services in Spring Boot or Node.js.
- Experience in security, transaction, Idempotency, log tracing, distributed caching, monitoring and containerization requirements of Micro services
- Experience in developing High Cohesion & Loosely Coupled Micro Services.
- Strong acumen in Data Structures, Algorithms, problem-solving and Logical/Analytical skills.
- Thorough understanding design principles and implementation of different type of Design patterns.
- Sound understanding of concepts like Exceptional handling, Serialization/ Deserialization and Immutability concepts, etc.
- Good fundamental knowledge in Enums, Collections, Annotations, Generics, Autoboxing, etc.
- Experience with Multithreading, Concurrent Package and Concurrent APIs
- Basic understanding of Java Memory Management (JMM) including garbage collections concepts.
- Experience in RDBMS or NO SQL databases and writing SQL queries (Joins, group by, aggregate functions, etc.)
- Hands-on experience with JMS
- Hands-on experience in creating RESTful webservices and consuming webservices
- Hands-on experience with Spring Boot and Spring cloud.
- Hands-on experience with any of the logging frameworks (SLF4J/LogBack/Log4j)
- Experience of writing Junit test cases using Mockito / Powermock frameworks.
- Should have practical experience with Maven/Gradle and knowledge of version control systems like Git/SVN etc.
- Good communication skills and ability to work with global teams to define and deliver on projects.
- Sound understanding/experience in software development process, test-driven development.
Additional Information
- Gender-Neutral Policy
- 18 paid holidays throughout the year for NCR/BLR (22 For Mumbai)
- Generous parental leave and new parent transition program
- Flexible work arrangements
- Employee Assistance Programs to help you in wellness and well being
LocalFinds team is building multiple capabilities that are relevant to customers in India. This is a rare opportunity to be part of a team that will be responsible for building a successful, sustainable and strategic business for Amazon.in
As an engineer, you will help with the design, implementation, and launch of many key product features. You will get an opportunity to work on the wide range of technologies (including AWS Elastic Search, Lambda, ECS, EDP, SQS, Dynamo DB, Slapshot, Herd, Horizonte etc.) and apply new technologies for solving customer problems. You will have an influence on defining product features, drive operational excellence, and spearhead the best practices that enable a quality product. You will get to work with highly skilled and motivated engineers who are already contributing to building high-scale and high-available systems.
If you are looking for an opportunity to work on world-leading technologies and would like to build creative technology solutions that positively impact hundreds of millions of customers, and relish large ownership and diverse technologies, join our team today!
As An Engineer You Will Be Responsible For
- Ownership of product/feature end-to-end for all phases from the development to the production.
- Ensuring the developed features are scalable and highly available with no quality concerns.
- Work closely with senior engineers for refining the design and implementation.
- Management and execution against project plans and delivery commitments.
- Assist directly and indirectly in the continual hiring and development of technical talent.
- Create and execute appropriate quality plans, project plans, test strategies and processes for development activities in concert with business and project management efforts.
- Contribute intellectual property through patents.
Basic Qualifications
- 2+ years of non-internship professional software development experience
- 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.
- A Bachelor's degree in Computer Science or related technical discipline.
- 3+ years of Software Development experience.
- Strong knowledge of Data Structures, Algorithms and CS fundamentals.
- Strong coding and problem solving skills.
- Experience working with service oriented architectures and web-based solutions.
- Experience in eCommerce and deep hands-on technical expertise
- Experience working on the AWS technologies.
- Experience with NoSQL and relational databases.
- Excellent verbal and written communication skills
- Experience working on Agile processes (Scrum, Kanban).
Hands on experience in System Design , Architecture.
Exposure to Microservices.
Experience in B2C.
Skills- JAVA / Python /Golang /C++
Role and Responsibilities:
As a Software Developer, you will be primarily involved in developing new features & fixing the bugs for our apps built to work with the Atlassian products. You will work closely with the product team to understand customer needs & co-ordinate with QA/Release management teams for maintaining quality of delivery.
Must have KSA (Knowledge Skills Abilities):
Hands on experience in JAVA
Spring MVC framework
CSS / HTML / Java Script
Should have knowledge of databases and must have used any of Postgres / SQL server/ My SQL/ Oracle
Additional KSA for advantage:
Knowledge or hands on experience of ReactJS
Knowledge of bug tracking tool Jira
Experience in web services development
Responsibilities:
Writing and implementing efficient code
Unit test driven development
Should be able to interpret requirements and suggest solutions to implement them
Must be able to break big stories in to smaller tasks and estimate
JD:
As a Software Development Engineer at Amazon, you have industry-leading technical abilities and demonstrate breadth and depth of knowledge. You build software to deliver business impact, making smart technology choices. You work in a team and drive things forward.
Responsibilities:
- You solve problems at their root, stepping back to understand the broader context.
- You develop pragmatic solutions and build flexible systems that balance engineering complexity and timely delivery, creating business impact.
- You understand a broad range of data structures and algorithms and apply them to deliver high-performing applications.
- You recognise and use design patterns to solve business problems.
- You understand how operating systems work, perform and scale.
Requirements:
- You write high quality, maintainable, and robust code.
- You recognise and adopt best practices in software engineering: design, testing, version control, documentation, build, deployment, and operations.
- You have experience building scalable software systems that are high-performance, highly-available, highly transactional, low latency and massively distributed.
- Bachelors or Masters in Computer Science or relevant technical field.
- Experience in software development and full product life-cycle.
- Excellent programming skills in any object oriented programming languages - preferably Java, C/C++/C#, Perl, Python, or Ruby.
- Strong knowledge of data structures, algorithms, and designing for performance, scalability, and availability.
- Proficiency in SQL and data modeling.
We at Fabzen Technologies are looking for a knowledgeable and experienced individual to fulfil the role of Spring boot developer.
Requirements:
- Bachelor’s degree in Computer Science, Software Engineering or related field.
- Professional experience on a software development team as a developer.
- Strong software documentation skills.
- Ability to comprehend and implement detailed project specifications as well as the ability to adapt to various technologies.
- Strong problem-solving skills.
- Understanding of Software Development Life Cycle.
- High attention to detail.
- Excellent troubleshooting and communication skills.
- Able to work well in a team setting.
The candidate must be proficient at:
- Socket programming
- Async await and promises
- Databases such as mongo, MySQL
- Passport JS for Google and Facebook integration
- Working on APIs with authentication and authorization
- Building frontend for mobile applications
- MVC architecture
Responsibilities:
- Work closely with the development team to deliver code as required for the applications and their updates.
- Ensure the design and development of the application fulfil our requirements and achieve desired objectives.
- Ensure company standards are followed; Project schedules and issues are effectively managed, and the same is effectively communicated.
- Ensure documentation, knowledge sharing, and training in new software.
- Create technical specifications and test plans.
- Monitor the functioning of the application and provide suggestions and support to maintain the same.
Experience in a game development company or in developing gaming applications would be an added advantage.
● You have a minimum of 7 years of experience working on production systems at a
productcompany with a decent scale
● You have a deep understanding of design patterns, memory/performance optimization, and how to summarise and share knowledge
● You have experience developing software services and an understanding of design for scalability,performance, and reliability
● You have excellent experience in managing security, reliability, performance, maintainability, and scalability
● You have familiarity with microservice architecture, containers, and related technologies
● You have strong knowledge of software development fundamentals, including relevant backgroundin computer science fundamentals and agile development methodologies.
● You have a strong development experience in using modern web frameworks in
programminglanguages like Ruby on Rails, Python, Javascript.
● You have a strong understanding of relational databases and SQL and you practice test drivendevelopment
● Would be an added advantage if you have a passion for mentoring and helping people on your team grow and achieve their goals
● You are an excellent collaborator & communicator. You know that startups are a team sport. Youlisten to others, aren’t afraid to speak your mind and always try to ask the right questions.
● You are excited by the prospect of working in a distributed team and company.
● If you like to tinker and have hobby projects, send us links to your blog, github etc
Location: We are open to candidates working from anywhere in India/across the globe. At the moment, however, like most teams, we are fully remote.
Swift is building a next generation checkout stack for India - a platform rolling up payments and logistics solution for all fulfillment needs. We give businesses the opportunity to provide a customer experience at par with the likes of Amazon and Flipkart, all the while saving money and time.
Its basically Amazon without the website listing - we let our sellers design their own sales channel :-)
We believe there are many things a seller or small business has to worry about when selling online, logistics/payments/etc shouldn't be one of them. With our solution, SMBs and D2C brands get access to technologies and services like next day delivery, same day delivery, live package tracking, Card/Cash on delivery, scheduled delivery etc, making parcel delivery just as simple as collecting payment.
We also provide robust APIs which makes it easy for developers to add shipping capabilities to their multichannel online store.
We want to be the #1 checkout platform that’s reliable, easy to use and affordable.
About you:
You have experience in Java/Scala/JVM based languages and have an understanding of server design and implementation. You are looking for challenges in growing a product from hundreds to millions of visitors per month making thousands of transactions a day.
You like working with streaming/reactive architectures and have experience/interest in setting up MongoDB based cloud infra from scratch. You generally prefer to use a minimal set of simple tools to a diverse range of complex ones.
We are looking to build a back-end cloud infrastructure (on Java/Scala with Google Cloud Platform preferably) which will be a fault-tolerant real-time stream processing system on the cloud - Our system will need to meet liveliness guarantees from a web/API application perspective (and not a big data/ETL perspective).
You like to work on a variety of projects - at this job, you’ll be developing a complex backend API infra, a reactive streaming architecture and a cloud-native, highly available API for our customers.
You have:
Experienced in any JVM based language.
Have some experience in NoSQL and architecting APIs
Strong verbal and written communication skills and the ability to work well cross-functionally.
We offer:
You to be a part of a small, but a super capable team.
The opportunity to work closely with founders to define, scope, estimate and plan various aspects of the product. Being one of the first hires at Swift, you will be involved in both high and low-level decision making. This means a lot of ownership, which we cultivate by having a flat structure.
Competitive salary and stock options from a high-growth company.
Job Title : Sr Java Developer
Job Description
We are seeking a well experienced full stack Java developer for our product. As a member of the software engineering division, you will assist in defining and developing software for tasks associated with the developing, debugging or designing of software applications or operating systems. Provide technical leadership to other software developers. Specify, design and implement modest changes to existing software architecture to meet changing needs.
Roles and responsibilities?
- Design, develop and implement software programming applications.
- Build highly scalable product.
- Participate in gathering business requirements and assessing existing architectures and resources.
- Work with application development team in delivering the project and deliverable within time and with good quality.
- Perform unit testing, oversee quality assurance of applications through system testing.
- Establishes processes for performance and conducts code review.
- Manage and mentor junior members of the team on good coding practice
Skills and experiences would I bring into this role?
- E/ B.Tech / MCA in computer science or a related field
- 4+ Years of Java/J2EE work experience.
- Object-Oriented design, patterns, algorithms, data structures
- Well knowledge about Spring Hibernate framework.
- Exposure to React JS / Angular JS.
- Experience with SQL/No-SQL database technologies – MySQL, Mongo dB, Cassandra, Redis, PostgreSQL, etc.
- Experience in Web services (REST or SOAP)
- End to end web development experience is highly preferred
- Good understanding of unit testing methodologies.
- Good analytical and communication skills
- Startup work culture mindset.









