
Greetings from Wissen Technology!
We are hiring Java Developers for Mumbai location.
Exp - 4 - 8 years
Location - Mumbai (Goregaon) - Hybrid
Notice Period - immediate or serving notice period only
Interview Process - Initial rounds virtual + Final round F2F
Software Engineer/Senior Software Engineer/Lead Engineer-Java
· Experience in Core Java 5.0 and above, Data Structures, OOPS, Multithreading, Algorithms, Collections, Unix/Linux
· Possess good architectural knowledge and be aware of enterprise application design patterns.
· Should have the ability to analyse, design, develop and test complex, low-latency client-facing applications.
· Good development experience with RDBMS
· Good knowledge of multi-threading and high volume server side development
Basic working knowledge of Unix/Linux
· Excellent problem solving and coding skills in Java
· Strong interpersonal, communication and analytical skills.
· Should have the ability to express their design ideas and thoughts.
Job Brief-
· Understand product requirements and come up with solution approaches
· Build and enhance large scale domain centric applications
· Deploy high quality deliverables into production adhering to the security, compliance and SDLC guidelines

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
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Nature of Assignment
• We are looking for an experienced Senior Software Engineer – Backend Development to develop and enhance enterprise-grade scientific and workflow-driven software solutions. The role requires strong technical expertise in Python-based backend
development, API design, microservices, and modern software engineering practices.
• As a senior member of the engineering team, you will own the design, development, testing, and delivery of complex software components while collaborating closely with Product Management, Quality Engineering, Front-End Development, DevOps, and global engineering teams. The ideal candidate is passionate about building high-quality software, solving complex technical problems, and delivering reliable, maintainable, and scalable solutions.
Key Responsibilities
• Design, develop, and maintain scalable, secure, and high-performance backend applications using Python, FastAPI, and Uvicorn.
• Design and implement RESTful APIs, Backend-for-Frontend (BFF) services, and microservices that support complex business workflows and enterprise integrations.
• Drive modernization initiatives by refactoring legacy applications into modular, cloudready, service-oriented architectures.
• Implement robust business logic, validation, exception handling, asynchronous processing, data persistence, reporting, and workflow orchestration following industry best practices.
• Ensure secure coding practices by applying web application security principles, authentication and authorization standards, and vulnerability mitigation techniques.
• Own end-to-end delivery of features from requirement analysis and technical design through development, testing, deployment, and production support.
• Analyze, troubleshoot, and resolve complex product, integration, and production issues using logs, debugging tools, and root-cause analysis techniques.
• Develop comprehensive unit, integration, API, and regression tests to ensure software quality and reliability.
• Support CI/CD processes, deployment validation, release readiness, and environment verification activities.
• Contribute to technical documentation, API specifications, and knowledge-sharing initiatives.
• Collaborate closely with Product Management, UI teams, QA, DevOps, and Architecture teams to deliver high-quality software solutions.
• Mentor junior engineersthrough code reviews, technical guidance, and knowledge sharing.
Qualification/s
• Bachelor’s/master’s degree in computer science, Software Engineering, Information Technology, or a related discipline.
Technical Expertise
• Strong hands-on software development experience in Python backend development.
• Extensive experience developing REST APIs using FastAPI, Uvicorn, and modern Python ecosystem frameworks.
• Strong understanding of microservices, distributed systems, API-first design, and Backend-for-Frontend (BFF) architecture.
• Proficiency in Object-Oriented Programming (OOP), SOLID principles, design patterns, and clean code practices.
• Solid experience in asynchronous programming, dependency injection, API validation, exception handling, and performance optimization.
• Strong knowledge of web application security including OAuth2, JWT, OpenID Connect, SSO, secure coding practices, OWASP principles, and vulnerability remediation.
• Strong knowledge in Logging, Monitoring & Troubleshooting – Production support, observability, performance tuning, and root-cause analysis.
• Hands-on experience with Git, branch management strategies, pull requests, and collaborative development workflows.
• Experience building and maintaining CI/CD pipelines using modern DevOps tools and automated release processes.
• Hands-on experience in testing frameworks such as PyTest and automation of units, integration, API, and regression testing.
• Experience with SQL /NoSQL databases, data modeling, query optimization, and backend data management.
• Strong debugging, analytical, and problem-solving skills with the ability to diagnose issues across applications, infrastructure, and deployment layers.
• Experience independently leading technical initiatives and delivering production grade software solutions
• Excellent collaboration and communication skills within cross-functional Agile teams
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.
RESPONSIBILITIES:
- Help your engineers grow their skills and experience
- Conduct code reviews, and make technical contributions to product architecture as well as get involved in solving bugs and delivering small features
- Hold regular 1:1's with all members of the team, give regular and clear feedback around the individual's performance
- Foster technical decision-making on the team, but make final decisions when necessary
- Provide oversight and leadership to a team of developers to ensure timely execution of team and project deliverables
- Maintain up-to-date skills in software development technologies and a broad understanding of the business, business needs, and how applications/assets drive and support the business
REQUIREMENTS:
- 6+ years of experience in software development and 1+ in team management.
- In-depth technical experience in at least one of the core languages, frameworks, or technologies used in backend development.
- Ability to mentor junior software developers, as well as to collaborate with all stakeholders.
- Extensive experience in developing, deploying, and integrating software solutions.
- Proficiency in documenting processes and monitoring performance metrics.
- Knowledge of best practices related to design principles, API development and software architecture.
- Ability to keep up with software industry trends and innovation.
- Exceptional interpersonal and communication skills.
- Looking for sr.java full stack developer
- java, springboot, angular 2/4/6/8, html and css
- experience with unit testing
- good exposure to oops
Hi,
We are hiring for the position of Java Tech Lead. Please find below the details for the same.
A passionate developer who has a strong working knowledge of OOPS and functional programming
principles. Standard Definitions and abbreviations don't entice us that much.
Key skills:
• Strong Java and J2EE background with 5-7 years of experience.
• Strong working experience in Multi-Threading, Exception Management and the Use of Collections.
• Sound knowledge of working with application aspects i.e., Caching, Asynchronous APIs, Logging etc.
• Experience with web application frameworks like Spring Boot or Dropwizard.
• Unit Testing is an everyday affair and hence demands very good unit testing skills using tools like Junit & TestNG.
• Understanding of relational databases, RESTful services, and build tools like Maven & Gradle
• Knows what and when to mock and has used frameworks like Mockito/Power Mock.
• Understanding of message queues such as ActiveMQ, Kafka, and RabbitMQ.
• Version Control is treated as important as programming skills. Fluent with version control tools like Git and Bitbucket.
• Exposure to Agile/Scrum, TDD not in theory but in practice.
• Experience with Continuous Integration, Continuous Deployment, Static Code Analysis, Jenkins and SonarQube.
• Willingness to take ownership of the technical solution and ensure technical expectations of deliverables are met.
• Strong communication skills along with the ability to articulate technical designs and concepts.
• Exposure to cloud and containerization would be a plus.
• Hands-on experience in application development in an enterprise setup.
• Have a good understanding of Distributed Application Architecture.
scalable technical stack, SQL, and big data technologies (preferably with strong data visualization and
analytics products).
Demonstrate knowledge of cloud architecture and implementation features (OS, multi-tenancy,
virtualization, orchestration, elastic scalability).
Experience in architecting, developing Micro services architecture with hand-onn experience.
Experience with Spring, Hibernate, Java, J2EE, Rabbit MQ, REST, Tomcat technologies.
Experience with Javascript UI technologies such as JQuery, Backbone, Bootstrap, AngularJS.
Job Description
Experience, seasoned professional and self-starter and need ability to translate customer/business
challenges and problems into tangible solutions.
Proactively bringing issues and problems to the attention of the team; generating, proposing and
implementing innovative solutions to solve them.
Proactively takes on challenges with a fresh perspective and open mind, with goal to provide continuous
improvement of platform and processes.
Demonstrates creativity, innovation and out-of-the-box thinking in crafting solutions addressing business
requirements, with near and long-term lenses.
Master-level experience and in-depth knowledge of Java platform with any one or more of: JBoss,
WebLogic, Websphere application servers.
Experience and knowledge of developing enterprise applications with i18n, l10n, and accessibility
support.
Preferred AWS certified architect and hands on AWS related technologies
Proven track record of troubleshooting and fixing performance, scalability, and reliability issues (memory
issues, multi-threading, CPU spikes, virtualization, etc.) in Linux/Unix or Windows environment.
Experience with troubleshooting and fixing database performance issues, and SQL tuning.
Experience and knowledge of secure coding best practices (such as OWASP).
Knowledge on BI tools and ETL.
Strong verbal and written communication skills.
Flexibility and ability to work in a fast-paced, rapidly growing environment.
Ability to work with globally distributed and multi-cultural teams.
Develop good development practices to ensure high quality deliverable.
Coach and develop development team members to ensure continuous improvement.
Monitor and assist developers in following established software development processes, policies, best
practices and expectations around coding and testing standards.
Take a hands-on approach in day-to-day development activities of team members including planning of
regular progress update meetings, design and code reviews and project reporting for team members.
Education
Bachelor degree in informatics, life-sciences or equivalent work experience is required.
Indicate below any additional preferred requirements if applicable (optional):
Masters of Science (MS) degree in relevant area of study is preferred.
Experience in testing business intelligence/analytics applications or software for multi-tenant enterprise
SaaS applications is a big plus
Experience with UI/UX testing, and testing products for accessibility
Having certification in CSM or ISTQB or equivalent.
Experience in testing business intelligence/analytics applications or software for multi-tenant enterprise
SaaS applications is a big plus
Scripting experience with bash or python or shell scripting. Must feel comfortable writing automation
scripts
Working experience of Java, Spring and Hibernate is must
Working experience of customizing Hybris Accelerators
Proficient in Hybris core concepts and commerce concepts including, but not limited to, Hybris PCM Data Modeling, Endeca/SOLR, WCMS/ Customer
Experience Manager, Cockpits, Cron jobs, internationalization,
personalization, security concepts and REST.
Proficient in catalog, order management, promotions, B2B commerce.
Should have experience of handling multi/Omni-channel architecture
through related Hybris Channel management modules.
Good understanding of integration patterns/methodologies of Hybris with
Organic SEO Search, Faceted Search and Commerce Search.
Should have exposure on the continuous integration build tools and code quality tools
Working experience of Integration with external services such as payment gateways, Order management solution using Web services such as REST and SOAP
Working experience of SOLR Search Engine is a plus
Role Description of Senior Software Engineer (.Net) – Full Stack
Your role would primarily be to strengthen our product by building and adding new product and improving the existing product features on the platform to improve existing offerings like
- AI enabled remote proctoring and video-based Virtual Examination Solutions
- Coding Skills Evaluation Solution for 15+ programming languages
- Interview Product Like AonLive for corporates to virtually interview candidates.
- CoCubes Assessment to assess candidates and apply for Jobs
The position will be based out of Gurgaon.
Primary Responsibilities
- .Net programming to build a world class product which is scalable and secure (model to be used by millions of users)
- Responsible for designing and appropriately structuring of code, developing modules, testing and productionalizing the modules with minimal handholding.
- Own the delivery of modules with minimal supervision and ensure delivery as per release plan
- Deliver product releases in rapid iterations; manage risks, dependencies, quality issues, delivery and integration timelines
- Contribute individually as well as manage a small team of junior resources
- Ensure compliance with guidelines, framework and best practices of the organization
- Work with global team and global products
Experience
- 3-6 years of strong experience in C#, Asp.Net/MVC/Razor Pages, SQL, Java Script, Jquery/Angular JS and HTML
• Strong programming and web development expertise in ASP.Net
• Experienced in handling end to end modules / client delivery independently
• Should have managed junior team members
Desired Qualifications / Traits
- Good business acumen and analytical / problem solving abilities (including eye for detail)
• Self driven, persistent, action oriented and goal driven
• Integrity and professionalism in work
We Strongly Believe in
- Work Life Balance – Maintain a healthy balance between your work and personal life.
- Open Culture– We encourage open communication and feedback. Every one is easily approachable. No closed work cubicle in the office.
- Empowerment–Employees are given certain degree of autonomy and responsibility for decision making.
- Fun at Work – We believe fun and work go hand in hand. Parties and celebrating various occasions are integral part of the culture.
- Learning & Development–Through periodic AON training programs, focus is to keep improving employee’s technical and business skill.
Compensation
Compensation is best in the industry depending on experience and skills.







