
Minimum 3+ Years of Core Java Programming with Collections Framework, Concurrent Programming, Multi-threading (Good knowledge in Executor service, Fork joins pool and other threading concepts)
· Good knowledge of the JVM with an understanding of performance and memory optimization.
· Extensive and expert programming experience in JAVA programming language (strong OO skills preferred).
· Excellent knowledge on collections like, Array List, Vector, LinkedList, HashMap, Hash Table, HashSet is mandate.
· Exercised exemplary development practices including design specification, coding standards, unit testing, and code-reviews.
· Expert level understanding of Object-Oriented Concepts and Data Structures
· Good experience in Database (Sybase, Oracle or SQL Server) like indexing (clustered, non-clustered), hashing, segmenting, data types like clob / blob, views (materialized), replication, constraints, functions, triggers, procedures etc.

About Wissen Technology
About
The Wissen Group was founded in the year 2000. Wissen Technology, a part of Wissen Group, was established in the year 2015. Wissen Technology is a specialized technology company that delivers high-end consulting for organizations in the Banking & Finance, Telecom, and Healthcare domains.
With offices in US, India, UK, Australia, Mexico, and Canada, we offer an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation.
Leveraging our multi-site operations in the USA and India and availability of world-class infrastructure, we offer a combination of on-site, off-site and offshore service models. Our technical competencies, proactive management approach, proven methodologies, committed support and the ability to quickly react to urgent needs make us a valued partner for any kind of Digital Enablement Services, Managed Services, or Business Services.
We believe that the technology and thought leadership that we command in the industry is the direct result of the kind of people we have been able to attract, to form this organization (you are one of them!).
Our workforce consists of 1000+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like MIT, Wharton, IITs, IIMs, and BITS and with rich work experience in some of the biggest companies in the world.
Wissen Technology has been certified as a Great Place to Work®. The technology and thought leadership that the company commands in the industry is the direct result of the kind of people Wissen has been able to attract. Wissen is committed to providing them the best possible opportunities and careers, which extends to providing the best possible experience and value to our clients.
Connect with the team
Similar jobs
As a Backend Engineer you will be responsible for creating REST APIs which are used to drive the User Interface. Given the nature of the application, these APIs need to be very efficient and high performing. This requires optimizing queries for faster execution and introducing database changes that may be required. We are looking for individuals with great attention to detail, who are genuine, confident, committed and not only passionate about technology, but excited to work in a fun and friendly start-up environment. The ideal candidate will be passionate about technology and GETTING IT DONE.
Responsibilities:
- Develop, test, implement and maintain application software
- Take part in software and architectural development activities
- Debug application issues and helping support respond to client queries
- Participate in application development meetings
- Provide accurate estimates, clearly communicate status of tasks and identification of risks
- Commitment to accomplishing the task at hand and identify the fastest and most reliable way to solve a problem
- Performance tuning of application code at different service levels
- Interact with customers of the application and help address issues reported
Requirements:
- Bachelor's degree in Computer Science or equivalent
- 3+ years of experience with Java and Spring frameworks.
- Having good knowledge in a scripting language like python is a plus
- Experience with Spring and Hibernate/ ORM
- Understanding of relational database and normal forms
- Understanding of NoSQL / RDBMS (Mongo or Postgres) and ability to write optimized and high performing queries
- Strong understanding of Java concurrency, concurrency patterns, experience building thread safe code
- Experience building RESTful web services
- Strong written and verbal communication skills
- Strong interpersonal skills and time management skills
- Strong problem solving and analytical skills
- Experience with GIT as a VCS, Unix based systems
- Experience with NoSQL Database is a plus
- Following are a set of 'good to have' skills React AWS Bitbucket, JIRA
Java Developer – Job Description
Wissen Technology is now hiring a Java Developer - Bangalore with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL. We are solving complex technical problems in the industry and need talented software engineers to join our mission and be a part of a global software development team. A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consultancy.
Required Skills:
• Exp. - 2 to 7 years.
• Experience in Core Java and Spring Boot.
• Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns.
• Should have the ability to analyze, design, develop and test complex, low latency client facing applications.
• Good development experience with RDBMS.
• Good knowledge of multi-threading and high-performance server-side development.
• Basic working knowledge of Unix/Linux.
• Excellent problem solving and coding skills.
• Strong interpersonal, communication and analytical skills.
• Should have the ability to express their design ideas and thoughts.
About Wissen Technology: Wissen Technology is a niche global consulting and solutions company that brings unparalleled domain expertise in Banking and Finance, Telecom and Startups. Wissen Technology is a part of Wissen Group and was established in 2015. Wissen has offices in the US, India, UK, Australia, Mexico, and Canada, with best-in-class infrastructure and development facilities. Wissen has successfully delivered projects worth $1 Billion for more than 25 of the Fortune 500 companies. The Wissen Group overall includes more than 4000 highly skilled professionals.
Wissen Technology provides exceptional value in mission critical projects for its clients, through thought leadership, ownership, and assured on-time deliveries that are always ‘first time right’.
Our team consists of 1200+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like Wharton, MIT, IITs, IIMs, and NITs and with rich work experience in some of the biggest companies in the world.
Wissen Technology offers an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation.
We have been certified as a Great Place to Work® for two consecutive years (2020-2022) and voted as the Top 20 AI/ML vendor by CIO Insider.
We're looking for highly skilled experienced engineers to design and build high-scale, cloud-based data processing systems that can handle massive amounts of data with low latency. You'll work with a team of smart, motivated, and diverse people and be given the autonomy and support to do your best work. This is a rare opportunity to make a meaningful impact in society while working in a dynamic and flexible workplace where you'll belong and be encouraged.
Qualifications:
- Bachelor's Degree required
- Significant experience with distributed systems.
- Experience with modern programming languages such as Java, C#, C/C++, or Ruby.
- Experience with container platforms such as DC/OS, Kubernetes
- Fluency in technologies and design concepts around Big Data processing and relational databases, such as the Hadoop ecosystem, Map/Reduce, stream processing, etc.
- Experience with production operations and good practices for putting quality code into production and troubleshooting issues when they arise.
- Effective communication of technical ideas verbally and in writing, including technical proposals, design specs, architecture diagrams, and presentations.
- Ability to collaborate effectively with the team and other stakeholders.
- Preferably, production experience with Cloud and data processing technologies.
Responsibilities:
As a member of the software engineering division, you will take an active role in the definition and evolution of standard practices and procedures. Define specifications for significant new projects and specify, design and develop software according to those specifications. You will perform professional software development tasks associated with the developing, designing and debugging of software applications or operating systems.
- Design and build distributed, scalable, and fault-tolerant software systems.
- Build cloud services on top of the modern OCI infrastructure.
- Participate in the entire software lifecycle, from design to development, to quality assurance, and to production.
- Invest in the best engineering and operational practices upfront to ensure our software quality bar is high.
- Optimize data processing pipelines for orders of magnitude higher throughput and faster latencies.
- Leverage a plethora of internal tooling at OCI to develop, build, deploy, and troubleshoot software.


We are looking for an experienced Backend Engineer to join our Technology team. You will be responsible for the server-side of our web applications. You’ll be working closely with our engineers to ensure system consistency and improve user experience.
You’ll be part of a cross-functional team that’s responsible for the full software development life cycle, from conception to deployment.
Skills and Expertise
- Strong experience with backend technologies (PHP / Laravel framework)
- Deep understanding of REST API design and WebSockets
- Confident handling of Git, IntelliJ/Eclipse, Docker and/or Kubernetes, Maven, Jenkins or comparable tools
- You have knowledge in the development of a micro service architecture with modern technologies
- Apply software best practices such as CI/CD, TDD and clean code principles
- Eager to learn new technologies and concepts and aspiration to constantly improve yourself
- Experience in working with APIs, both third-party and custom written
- Good understanding of applications building and debugging with reusability and modularity in mind
- A structured, creative, and solution-oriented way of working
Responsibilities
- Work with development teams and product managers to ideate solutions
- Design client-side and server-side architecture
- Build the front-end of applications through appealing visual design
- Develop and manage well-functioning databases and applications
- Write effective APIs
- Test software to ensure responsiveness and efficiency
- Troubleshoot, debug and upgrade software
- Create security and data protection settings
- Build features and applications with a mobile responsive design
- Write technical documentation
- Work with data scientists and analysts to improve the product



• Strong proficiency with Java programming & DevOps
• -Must have experience on Micro-Services using Spring boot/Jersy/Swagger.
• Must havegood knowledge on Dockers.
• Must have at least 1to 2 years’ experience of Web application
• Knowledge of OOP concepts, industry best practices and design
• Well versed Back-end build pipelines and tools-Professional, precise communication
skills
• Work experience writing Unit Tests
• Work experience on applying the best practices ofWeb Applicationdevelopment
• Working experience in an Agile team especially with SCRUM
• Good understandingof DevOps, CI/CD principles and practices
toimprove Software Quality & Efficienc
• Good understanding of web technology/enterprise level applications
• Good to have experience in in JavaScript frameworks
• Good to have experience in Agile Methodology
• Good to have previously worked on distributed systems
• Good to have working knowledge on Kafka and Redis
• Good to have exposure to stream processing and functional
programming
CANDIDATES MUST HAVE
• JAVA 8 or above
• DevOps
• 1+years of Web Development experience
• Javascript Framework
• Hibernate &Mircroservices
Our client is the Health-tech initiative of India's largest business house. Started in 2015, it empowers healthcare providers and consumers in India. All healthcare monitoring services are made available through an app that will help connect doctors, hospitals, pharmacies, laboratories and consumers, enabling preventive and predictive healthcare. It helps the care-givers to track the entire patient journey from the initial appointment and maintaining their records, generating lab test reports to providing virtual consultation and home-care solutions. It is expected that this futuristic guide will strengthen doctor-patient relationship and enhance the in-clinic experience.
As the Java Programmer, 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
owners, business analysts and team members to analyse business requirements and proposed
solutions. A highly motivated and enthusiastic to join our Core Technology team and make a
difference.
Must-Have Skills:
• Candidate should have basic experience in Core Java and Advance Java design patterns
• Candidate should have basic experience in Advance Java frameworks – Spring, Hibernate,
JSP, Servlet.
• Good understanding of MAVEN & SVN is a must.
• Front end technologies knowledge is required to communicate with the web development
team. JavaScript, JQuery, AJAX, JSON.
• Collaborating with other teams. Excellent problem solving, debugging, design and debugging
skills required.
Good to Have Skills:
• Have good interpersonal and communication skills.
• E-commerce domain knowledge will be an add-on.
• Knowledge in API Design and docker.
• Knowledge of Agile methodologies
• Knowledge of Unit testing
Primary Responsibilities:
• Work closely with Tech Leads, Architects, Project Manager / Onsite Leads.
• Understand/apply reusable code design, leverage application architecture/framework
capabilities and functionality, and design/develop solutions that are highly reliable, scalable,
and perform to meet business-defined service levels.
• Contribute to the technical code and design documentation.
• Conduct code reviews and ensuring quality solutions are built and tested.
• Provide production support and issue triage for products.


