
š§ Ā Job Description: Senior Java Developer (8+ Years Experience)
Location:Ā Mumbai, India
Employment Type:Ā Full-time, Hybrid mode of working
Company:Ā Wissen Technology
Website:Ā www.wissen.com
š About Wissen Technology
Wissen Technology is a specialized technology consulting firm delivering cutting-edge solutions to global leaders in Banking & Finance, Telecom, and Healthcare. Established in 2015 and part of the Wissen Group (founded in 2000), Wissen has scaled rapidly with impressive impact and recognition.
- š Offices in US, UK, India, Australia, Mexico, and Canada
- š„ 1700+ Wissen Technology professionals; part of a 4500-strong Wissen Group
- š Great Place to WorkĀ® Certified
- š§ Featured as a Top 20 AI/ML Vendor (CIO Insider, 2020)
- š Achieved 400% revenue growth in 5 years (with zero external funding)
- š¼ Delivered $1B+ worth of projects to 50+ Fortune 500 companies
Learn more about our work and thought leadership:
šĀ Articles by WissenĀ | š¼Ā LinkedIn
About the Role
We are seeking an experiencedĀ Senior Java DeveloperĀ with 8+ years of hands-on expertise in building scalable, high-performance applications. The ideal candidate will have strong fundamentals inĀ Java, OOPS, Multithreading, Spring concepts, and SQL, and will play a key role in designing, developing, and optimizing enterprise-grade solutions.
Key Responsibilities
- Design, develop, and maintain complex applications usingĀ Core JavaĀ andĀ Spring frameworks
- Apply advancedĀ Object-Oriented Programming (OOPS)Ā principles to deliver clean, modular, and reusable code
- Implement and optimizeĀ multithreaded applicationsĀ for high-performance systems
- Work withĀ SQL databasesĀ for efficient data modeling, query optimization, and integration
- Collaborate with cross-functional teams to gather requirements and translate them into technical solutions
- Conduct code reviews, troubleshoot issues, and ensure adherence to best practices
- Mentor junior developers and contribute to technical knowledge sharing within the team
- Ensure application scalability, performance tuning, and security compliance
Required Skills & Qualifications
- Bachelorās/Masterās degree in Computer Science, Engineering, or related field
- 8+ years of professional experience inĀ Java development
- Strong expertise inĀ Core Java, OOPS, and Multithreading
- Hands-on experience withĀ Spring conceptsĀ (Spring Core, Spring MVC, Spring Boot preferred)
- Proficiency inĀ SQLĀ and database design (MySQL, Oracle, PostgreSQL, etc.)
- Solid understanding of software development life cycle (SDLC) and Agile methodologies
- Strong analytical, problem-solving, and communication skills
š Why Wissen?
Join a company that combines start-up agility with enterprise stability. Work alongside some of the brightest minds from institutions like MIT, Wharton, IITs, IIMs, and NITs. Be part of mission-critical projects for Fortune 500 giants, and grow in a culture that invests in your future.

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 WorkĀ®. 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
ā 2 - 5 years of experience
ā Expertise in the following areas
ā Java
ā HTTP Protocol
ā Youāve heard of or worked with some of the following tech stacks / products
ā Spring
ā Postgresql
ā Redis
ā Docker
ā Message brokers
ā Github
ā These non functional areas are familiar to you
ā Performance
ā Debugging
ā Log management
Nice to have:
ā Familiarity with AWS
Ā
-
Excellent Project Management Skills - Effort estimation, scoping, prioritisation and timely delivery
-
Runs daily stand-up, sprint review, iteration planning and retrospective
-
Analyze the product requirements specs & designs, convert them to tech specs, write user stories, workflows & test criteria
-
Ensure the completeness and accuracy of every feature developed with demos & verification from developers/QA and acceptance demo with Product Management
-
Keep all stakeholders informed pro-actively on the progress, blockers, changes & issues
-
Work with the teams to resolve people problems, dependencies, project roadblocks, and conflicts
-
Implement and support software principles, rules and processes
-
Collaborate effectively with cross functional teams, act as the primary technical contact, Take end to end ownership on mission critical projects
-
Do the code reviews, quality checks, test effort planning, performance testing, UI & UX and code merges and deployments
-
Build high energy, high performance and super productive teams, Proactively plan resource hiring, and the need for training and talent development
-
BE/B.Tech/MCA preferably with Computer Science
-
A solid foundation in computer science, with strong competencies in data structures, algorithms, and software design
-
Minimum 8 years of hands-on experience in developing and delivering products and using Agile sprints
-
Managing the overall Product releases from initial requirements till the final deliver
-
Deep understanding of the fundamentals of iterative and incremental development, expertise in agile methodologies and frameworks
-
Self-starter, proactive & a skilled decision maker in doing what is right
-
Works independently & great at team collaboration
-
Team Leader - Knack for influencing without being authoritative
-
Possess Technical Breadth and effectively mentor tech team
-
Must have very good recommendations from peers and managers in past companies
-
Experience with Coding, Architecting & Developing, UX, Designs & Quality Assurance
-
Experience with Cloud Deployments on AWS etc
Software Architect
Bangalore, India / Engineering/ Full-time
Ā
Job Overview:
As a Software Architect, you will play a crucial role in designing, developing, and maintaining robust and scalable backend solutions for our software applications. You will be responsible for making strategic technical decisions, and collaborating with cross-functional teams to ensure the successful delivery of high-quality software products with scalable backend infrastructure.Ā
Responsibilities:
- System Architecture:
- Design and architect scalable, efficient, and maintainable backend systems.
- Collaborate with cross-functional teams to understand business requirements and translate them into technical specifications.
- Technical Leadership:
- Provide technical leadership and guidance to the development team, ensuring best practices and coding standards are followed.
- Mentor and coach team members, fostering a culture of continuous learning and improvement.
- Backend Development:
- Lead the development of backend components, modules, and features primarily on Ruby on Rails tech stack and also be open to contribute in other tech stacks based on Java/Kotlin and Python.
- Implement and maintain APIs, data models, and database structures to support application functionality.
- Performance Optimization:
- Identify and address performance bottlenecks, ensuring optimal system response times and resource utilization.
- Implement caching strategies and other performance optimization techniques.
- Collaboration:
- Collaborate with frontend developers, product managers, and other stakeholders to integrate frontend and backend components seamlessly.
- Participate in code reviews to ensure code quality, adherence to standards, and knowledge sharing within the team.
- Security and Compliance:
- Implement and enforce security best practices to safeguard sensitive data.
- Stay updated on industry trends and emerging technologies to ensure compliance and security standards are met.
- Documentation:
- Create and maintain comprehensive technical documentation for the backend architecture, APIs, and development processes.
- Continuous Improvement:
- Proactively identify opportunities for process improvement and contribute to the evolution of development methodologies and practices.
Qualifications:
- Overall 10+ years of experience, with 2+ years as a Software Architect with a focus on backend development using Ruby on Rails.
- In-depth knowledge of Ruby on Rails framework, database design, and API development.
- Strong understanding of software architecture principles, design patterns, and best practices.
- Experience with performance optimization, scalability, and security considerations.
- Excellent communication and collaboration skills.
- Leadership experience with a demonstrated ability to mentor and guide development teams.
- Bachelorās degree in Computer Science, Engineering, or a related field (or equivalent work experience).
Bonus points:
- Familiarity with front-end technologies and frameworks(ReactJs).
- Experience with other programming languages.(Kotlin/Python)
- Experience with cloud platforms and microservices architecture.
- Knowledge of DevOps practices and tools.(AWS, Kubernetes, )
Join us in revolutionizing the way software solutions are developed, and contribute to building cutting-edge applications that make a positive impact on our users and the industry.
Senior Software Engineer (Java)
We are looking for a Senior Software Engineer - Java
If you're a creative problem solver who is eager to develop amazing products and hungry for a new adventure, a word class workplace is waiting for you in the heart of Kolkata.
An exhaustive list of expectations :
ā Design and implement cutting-edge applications
ā Participate in code reviews and application debugging and diagnosis.
ā Practice modern software development methodologies such as continuous delivery, and scrum.
ā Collaborate with product managers and engineers to build scalable systems enabling innovative ordering experiences.
Requirements -
ā Knowledge and 5+ years of experience in developing Java applications
ā A completed technical degree in Computer Science or any related fields.
ā Profound knowledge and working experience with Java Frameworks (Springboot) and SQL databases.
ā Solid experience in the design and implementation of Restful APIs and design patterns.
ā Strong knowledge in Core Java, REST , Spring Framework, Spring Boot Microservice , JPA (e.g. Hibernate, OpenJPA, etc.) , Docker, Jenkins, ELK Stack
ā Experience working with NoSQL Technologies and interest in Elasticsearch, and Microservices architectures.
ā Curiosity, out of box problem-solving abilities, and an eye for detail.
ā Passion for clean code
What really makes us interested in you - You are self-motivated. You think like an entrepreneur, constantly innovating and driving positive change, but more importantly, you consistently deliver stupendous results.
Number of position ā 3
Job Location ā kolkata, Sector 5
Job Title -Senior Java Developers
Job Description - Backend Engineer - Lead (Java)
Mumbai, India | Engineering Team | Full-time
Ā
Are you passionate enough to be a crucial part of a highly analytical and scalable user engagement platform?
Are you ready learn new technologies and willing to step out of your comfort zone to explore and learn new skills?
Ā
If so, this is an opportunity for you to join a high-functioning team and make your mark on our organisation!
Ā
The Impact you will create:
- Build campaign generation services which can send app notifications at a speed ofĀ 10 million a minute
- Dashboards to showĀ Real timeĀ key performance indicators to clients
- Develop complex user segmentation engines which creates segments onĀ Terabytes of data within few seconds
- Building highly available & horizontally scalable platform services for ever growing data
- Use cloud based services like AWS Lambda for blazing fast throughput & auto scalability
- Work on complex analytics on terabytes of data like building Cohorts, Funnels, User path analysis, Recency Frequency & Monetary analysis at blazing speed
- You will build backend services and APIs to create scalable engineering systems.
- As an individual contributor, you will tackle some of our broadest technical challenges that requires deep technical knowledge, hands-on software development and seamless collaboration with all functions.
- You will envision and develop features that are highly reliable and fault tolerant to deliver a superior customer experience.
- Collaborating various highly-functional teams in the company to meet deliverables throughout the software development lifecycle.
- Identify and improvise areas of improvement through data insights and research.
Ā
What we look for?
- 5-9 years of experience in backend development and must have worked on Java/shell/Perl/python scripting.
- Solid understanding of engineering best practices, continuous integration, and incremental delivery.
- Strong analytical skills, debugging and troubleshooting skills, product line analysis.
- Follower of agile methodology (Sprint planning, working on JIRA, retrospective etc).
- Proficiency in usage of tools like Docker, Maven, Jenkins and knowledge on frameworks in Java like spring, spring boot, hibernate, JPA.
- Ability to design application modules using various concepts like object oriented, multi-threading, synchronization, caching, fault tolerance, sockets, various IPCs, database interfaces etc.
- Hands on experience on Redis, MySQL and streaming technologies like Kafka producer consumers and NoSQL databases like mongo dB/Cassandra.
- Knowledge about versioning like Git and deployment processes like CICD.
Whatās in it for you?
Ā
- Immense growth, continuous learning and deliver the best to the top-notch brands
- Work with some of the most innovative brains
- Opportunity to explore your entrepreneurial mind-set
- Open culture where your creative bug gets activated.
Ā
If this sounds like a company you would like to be a part of, and a role you would thrive in, please donāt hold back from applying! We need your unique perspective for our continued innovation and success!
So letās converse! Our inquisitive nature is all keen to know more about you.
Skills
JAVA, MONGO, Redis, Cassandra, Kafka, rabbitMQ
Ā
Ā·Ā Ā Ā Ā Ā Ā Strong knowledge of core java & spring boot
Ā·Ā Ā Ā Ā Ā Ā Hands-on experience on payment switch integration
Ā·Ā Ā Ā Ā Ā Ā Good knowledge of ISO8583 and EMV Data.
Ā·Ā Ā Ā Ā Ā Ā Hands-on experience on any database like MySQL, oracle...etc.
Ā·Ā Ā Ā Ā Ā Ā Should be strong in creating/ defining Swagger specs for REST APIs, understand REST principles, Guidelines.
Ā·Ā Ā Ā Ā Ā Ā In depth knowledge of Card Scheme Specifications (VISA, MasterCard, Rupay and AMEX), Card
Ā·Ā Ā Ā Ā Ā Ā Well versed with payment standards and ISO8583 and EMV data (mandatory),Ā
Ā·Ā Ā Ā Ā Ā Ā Hands on experience with Switch payment integration
Ā·Ā Ā Ā Ā Ā Ā Resolve technical issues for designers and developers during project lifecycle
Ā·Ā Ā Ā Ā Ā Ā Excellent problem solving/troubleshooting skills on Java/J2EE technologies
Ā·Ā Ā Ā Ā Ā Ā Result oriented and a versatile engineer who is expert in providing solutions, creating architecture and designs.
Ā·Ā Ā Ā Ā Ā Ā Excellent communication (written and verbal) and interpersonal skills
Payment card industry preferred
-
Expert knowledge of computer science, with strong competencies in data structures, algorithms,
and software design.
-
Strong understanding of end-to-end architectures and development frameworks; knowledge
across tiers in a multi-tier cloud environment including load balancers, web servers, application
containers, data stores, and distributed caches.
-
Minimum 6 years of experience with deep technical knowledge and hands on skills in Java.
-
Has worked extensively on caching technologies such as Redis, memcache.
-
Should be strong with Data Strcutures, Algorithms & OOPs concepts.
-
Worked on NoSQL databases such as MongoDb.
-
Designed and developed highly scalable multi-threaded large scale distributed systems.
-
Well versed with services and micro-services architecture.
-
-
Usage of containers, virtual machine systems, cloud computing.
Ā -

Proficient in Java, J2EE and related technologies.
⢠Experienced in using spring, Spring Boot, Hibernate, messaging systems.
⢠Good understanding of relational database performance concepts and usage of ORM frameworks such as Hibernate
⢠Expert understanding of the object-oriented design and programming concepts
⢠Strong working experience on Data Structures, Algorithms and Collections.
⢠Solid experience building applications on top of RESTful APIs.
⢠Knowledge/experience with Spring MVC
⢠Stroing knowledge in developing and executing automated unit, functional and integration tests
⢠Good communication and analytical skills.
⢠Strong trouble shooting skills
Your role in helping us shape the future:
Gogo Commercial Aviation, An Intelsat Company has an exciting opportunity for a Software Engineer. You will help us design and develop solutions aimed at providing a means to manage and deploy the configuration specifics of aircraft, based on airlines, aircraft deployed technology, fleet and installation requirements. This solution uses a combination of configuration management and cloud-based deployment using AWS which also requires an understanding of network / telecom protocols.
Are you up to the challenge?
The ideal candidate for this role will be a working member of an engineering team delivering quality technical solutions carrying through from design to deployment. This role requires solid understanding of the design and development process, using CI / CD technologies. Your role will be crucial in designing and delivering complex products and solutions across technologies products and tools, improving quality of the code by following coding standards/guidelines, using static code analysers, maximum unit test coverage and automating the test cases.
Can you drive these processes?
- Develop groundbreaking and distributed solutions with high availability and impact.
- Work with the Architects/ Technical lead / Product Owner to understand user requirements, convert BDD scenarios or user stories into product functionality.
- Work with the team members collectively to own and deliver features and flexible to take up any type of tasks like develop, automate and test to complete feature.
- Perform code reviews and associated engineering quality checks clearly and consistently.
Ā
You should definitely have:
- Bachelor's degree in Computer Science, Engineering, or related discipline
- 2 - 5 Years of experience in systems implementations with a focus on both custom application development & commercial systems software implementations
- Knowledge and experience in multiple technical disciplines required (development, QA, devops, etc)
- 2+ years of in-depth development experience with Java / C++ / C / Go.
- Experience in CI/CD and AWS deployments (EC2, SQS, SNS, Lambda, S3, Aurora, DynamoDB)
- Advanced knowledge of software development lifecycles; expert knowledge in Agile and Lean methods.
- Proponent of DevOps, TDD, Agile/XP practices, and CI/CD pipelines
- Ability to work under pressure, prioritize work, coordinate with onsite stakeholders and well organized.
- Flexibility in working with technologies and platforms.
- A commitment to excellence, best practices, and the continuous improvement of our products, code base, processes, and tools.
Ā
It would be nice if you had:
- Experience with Scaled Agile Framework (SAFe) work environments
What itās like to work with us:
Intelsat is connecting the world and transforming the satellite landscape by reaching beyond the traditional satellite industry. We are defining new products that will open new, profitable markets. To help us reach this goal, you should be a bold thinker who will perform a key role in shaping Intelsat innovation for years to come.
- We emphasize personal and professional growth
- Awesome benefits including Leave Benefits, medical and training
- Fun, diverse, and inclusive culture






