
Java Developer – Job Description Wissen Technology is now hiring for 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 consulting. Required Skills: • Exp. - 4 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 the year 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.

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.
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Job description
🔧 Key Responsibilities:
- Design and implement robust backend services using Node.js.
- Develop and maintain RESTful APIs to support front-end applications and third-party integrations
- Manage and optimize SQL/NoSQL databases (e.g., PostgreSQL, MongoDB, Snowflake)
- Collaborate with front-end developers to ensure seamless integration and data flow
- Implement caching, logging, and monitoring strategies for performance and reliability
- Ensure application security, scalability, and maintainability
- Participate in code reviews, architecture discussions, and agile ceremonies
✅ Required Skills:
- Proficiency in backend programming languages (Node.js, Java, .NET Core)
- Experience with API development and tools like Postman, Swagger
- Strong understanding of database design and query optimization
- Familiarity with microservices architecture and containerization (Docker, Kubernetes)
- Knowledge of cloud platforms (Azure, AWS) and CI/CD pipelines.


About Company:
Our client is in the business of delivering cutting-edge software solutions, hardware systems, and IT services. It lends the right technological edge to governments and businesses. This enables them to achieve their organizational objectives efficiently and effectively to scale their businesses to newer heights.
Minimum Requirements/Qualifications:
(i) Minimum education qualification of MCA/ MSc (Computer Science)/BE/BTech (computers/ IT).
(ii) Must have at least 2.5 to 5 years of experience in application development, deployment, and testing. He/ She must possess a valid MySQL Developer or Java Developer certification, which is obtained at least six (06) months prior to the date of award of the contract to the firm.
(iii) Knowledge of Software Management Life Cycle and Software Testing viz unit testing, system testing & Integration Testing, etc.
(iv) Knowledge & hands-on experience of PHP & My SQL is a must. Additional knowledge of Post GreSQL, Typescript & Lit element, Java with Hibernate and Springs, SQL Server, Apache Tom Cat Server & relevant open-source technologies is required.
(v) Individuals must have hands-on experience in server operating systems viz Windows Server OS and RHEL. Knowledge of security concepts of web applications & Networking for undertaking necessary troubleshooting wrt applications accessibility.
(vi) Knowledge of Mobile Application Development
Key Responsibility Areas:
- Creation of new Course No, Term, and Term type at the beginning of each term. All associated Database tables and software procedures and functions are updated and recompiled.
- Management of Data Entry and Information access right to various users.
- AMC includes bug fixing, updating of application for any small policy changes.
- Regular Patch/update installation and coordinating with MIS team for identification and resolution of issues wrt application functioning and deployment
- Implementation of Cyber security policies and hardening of application
- Development of New functionalities in the application
- Regular Testing of running application functionalities and undertaking unit and integration testing of newly developed components.
- Support for making changes in the NDA internet web portal.
- AMC includes backing up of software, and database and storing it in other locations every week
- Online Multimedia Management System
- Software Wise Charter of Duties
- Cadet Suggestion/ Complaint Management System

Responsibilities:
• Take on complex problems that span multiple components and teams.
• Independently own one or more multiple modules, which include: requirement analysis, design, development, maintenance & support
• Write extensive, efficient code to address complex modules that handle the interaction between multiple components.
• Rapidly iterate to add new functionalities and solves complex problems with simple and intuitive solutions
• Produce architecture with clean interfaces, that are efficient and scalable
• Participate and contribute to architectural discussions
• Solve production issues. Investigate and provide solutions to minimize the business impact due to the outage
• Continuously improve performance metrics of modules you own.
• Collaborate effectively across teams to solve problems, execute and deliver results
Requirements:
• Experience: 3+ years
• A Bachelor's or Master's Degree in Computer Science
• Software engineering and product delivery experience, with a strong background in algorithms
• Experience in architecting & building real-time, large-scale e-commerce applications
• Experience with high-performance websites catering to millions of daily traffic is a plus
• Excellent command over Data Structures and Algorithms
• Experience with web technologies, Go/Java/Python
• Language: GO or Python
• Strong expertise in DS and Algo
• Strong leadership skills - have experience mentoring, building products from scratch or incumbent in design and architecture.
• Have worked in the scaling of the system right from scratch.
• Someone worked in small user base to a large user base and wrote optimized code
• Both HLD and LLD



Skills:
- Proficient in Go programming language with experience in building high-performance, scalable applications
- Experience with Java development a plus
- Familiarity with Git version control systems (e.g., GitHub, GitLab, BitBucket, SVN)
- Solid understanding of RESTful web services APIs
- Experience with CI/CD tools like Jenkins
- Experience with NoSQL databases
- Experience working with PostgreSQL databases
Responsibilities:
- Design, develop, and maintain robust and efficient Go code
- Collaborate with cross-functional teams to design, implement, and deploy new features
- Participate in code reviews and ensure high code quality
- Troubleshoot and debug complex technical problems
- Stay up-to-date with the latest advancements in Go and related technologies
Skill: Java Developer – Mumbai
Job Description:
4.5 -8 years of Experience
- Java 8
- Spring boot
- API development
- MVC architecture
- web services
- OOPS

Position Overview:
We seek a talented and experienced professional to serve as the Head of Engineering and a Senior Backend Developer with expertise in Go (Golang). In this dual role, you will lead our engineering team and contribute hands-on to developing our B2B SaaS platform, which aims to revolutionize blue-collar worker training in India. You will work closely with cross-functional teams, set engineering standards, and ensure the successful execution of our technology initiatives.
As Head of Engineering:
- Oversee the recruitment, mentoring, and performance management of engineering team members.
- Define and maintain engineering best practices, coding standards, and development methodologies.
- Manage project timelines, resources, and budgets
- Foster a culture of innovation, collaboration, and continuous improvement within the engineering team.
- Drive technical decisions and architecture discussions to ensure scalability, security, and maintainability.
As Senior Backend Developer (Go):
- Design the architecture and implement high-performance, scalable, and reliable backend services in Go.
- Write clean, maintainable, and efficient code while ensuring the security and integrity of the platform.
- Optimize and fine-tune the backend components for maximum speed and scalability.
- Develop and maintain RESTful APIs for seamless integration with frontend and external systems.
- Implement asynchronous programming and event-driven architecture for handling concurrent requests efficiently.
- Work on data modelling and integration with databases for data storage and retrieval.
- Write unit tests and perform code reviews to maintain code quality and ensure robustness.
Function: Technology
Purpose of the Job:
The Developer will be part of a cross-functional Scrum team responsible for designing, developing, and testing diverse features of Airtel Payments Bank agile stream. Payments bank values software engineers who are motivated, creative, passionate and positive. You must be comfortable working closely with others and have solid communication skills. Software engineers who learn quickly and have strong technical skills will thrive at Airtel Payments Bank. You must have considerable experience with object-oriented programming and should be familiar with design patterns, data structures, database and other staples of practical software development
Key Deliverables :
- Research, design, implement and managing software programs
- Test and evaluate new programs
- Identify the areas for modification in existing programs and subsequently developing these modifications
- Writing and implementing efficient code
- Determining operational practicality
- Deploying software tools, processes and metrics
- Maintaining and upgrading existing systems
Skills Required:
- Should have experience of working on Core Java/J2EE & OOPS concept
- Should be well versed with Spring/Struts & Apache Camel (OSGI Framework)
- Should have a good understanding of Hibernate and Other ORMs
- Technical design, implementation, deployment, and support.
- Perform development and unit testing, working closely with Business.
- Web Service (SOAP/REST) , Maven
- Build tool such as Jenkins
- Caching Technique(Radis, Hazlecast, aerospike)
- Database Knowledge - Oracle, MySQL
Qualification: Technical background (BS/MS in Computer Science/Engineering or related discipline/experience)

Key Responsibilities :
1. Work closely with client and team and understanding the requirement, design, analyze and do the code changes
2.Helping team and client to resolve issues
3.Should able to handle day to day activity like team management, daily meeting
Technical Experience :
- Net development work experience
- Proficiency in NET Development with Net Core.
- Strong object-oriented programming OOPS design skills, SOLID principles and proficiency in software design patterns
- Experience in database MS SQL Server, No SQL
- Solid understanding of Microservices
- Good understanding Azure, Docker and Kubernetes
- Experience with version control systems GitHub and Bitbucket
Professional Attributes :
1.Should have good communication Skills
2.Should be good team player
3.Should be able to work independently and under pressure
4.Should have good logical and analytical thinking



1. Work experience between 3 years to 9 years in building large scale high user traffic consumer facing applications with desire to work in a fast paced startup.
2. Knowledge on reactive and asynchronous programming is preferable. If you have worked with coroutines, goroutines, high concurrency or optimized number of threads for processing on your backend server you could be a good fit.
3. Extremely proficient at writing performant, scalable and production ready code in Kotlin, Java (8 or above, comfortable with concepts like lambda, streams, multithreading etc), Elixir, Rust, or Golang. Should be familiar with static code analysis, code coverage and code reviews.
4. Experience with NoSQL DBs like MongoDB, Cassandra, Redis or Aerospike is required. Knowledge of graph DBs like Neo4j is preferred.
5. Strong in algorithms, problem solving and data structures.
6. Knowledge of TDD and experience with building applications integrated with CI-CD pipelines (automated build, tests and deployments).
7. Exposure to micro-services with good understanding of containers, kubernetes, logging, alerting and monitoring. Inter services communication. Should know how to handle multiple versions of APIs.

Roles and Responsibilities
Experience in full cycle implementation of software development projects using .NET 4.0 and above, C#, ADO.NET, ASP.NET, MVC / .Net Core
Experience in developing of Web API and RESTful web services. Experienced with client-side programming HTML, CSS, AJAX.
Experience with Entity frameworks and Dappers Programming skills on SQL Server with strong database design.
Desired Candidate Profile
1+ years of software development experience .Net Development, C#, ASP.Net MVC
Dot Net core expertise is a must
Strong working knowledge of SQL Server, C#, JavaScript and JQuery
Strong working knowledge of .NET MVC LATEST VERSION
Strong working knowledge of ENTITY FRAMEWORK
Excellent written and verbal interpersonal skills for coordinating across teams
Deep experience and expertise with designing, implementing, testing and deploying sophisticated .Net applications
Keenness to learn and master new technologies and techniques
Excellent software development skills with very sound logic

