Upgrade existing Java (1.6) application running on Apache Tomcat to new Java (1.8) version and new Apache Tomcat version |
Make necessary code changes for porting application to new Java versions and Tomcat versions |
Set up new application environments for Dev, SIT and Production |
Perform unit testing and support user testing. |
Deploy new upgraded application in production |
Provide post implementation support. |
Analyze and resolve defects coming out of testing and post production deployment. |
Modify existing application code to use Sql Server as backend. |
Develop Java code as needed. |

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Person should have strong knowledge in -
1. Core Java,
2. JSP
3. Spring Framework,
4. Spring Boot,
5. SOAP and REST Webservices
6. Application Security.
Person should have 4 to 6 Years of work experience in Java and the above-mentioned related technology.
Person should have good Oracle Database knowledge and have good communication skills.
Having work experience in BFSI domain will added advantage
Person needs to work from Mumbai location and also available to join the office
Core Experience:
•Experience in Core Java, J2EE, Spring/Spring Boot, Hibernate, Spring REST, Linux, JUnit, Maven, Design Patterns.
• Sound knowledge of RDBMS like MySQL/Postgres, including schema design.
• Exposure to Linux environment.
• Exposure to Docker and Kubernetes.
• Basic Knowledge of Cloud Services of AWS, Azure, GCP cloud provider.
• Proficient in general programming, logic, problem solving, data structures & algorithms
• Good analytical, grasping and problem-solving skills.
Secondary Skills:
• Agile / Scrum Development Experience preferred.
• Comfortable working with a microservices architecture and familiarly with NoSql solutions.
• Experience in Test Driven Development.
• Excellent written and verbal communication skills.
• Hands-on skills in configuration of popular build tools, like Maven and Gradle
• Good knowledge of testing frameworks such as JUnit.
• Good knowledge of coding standards, source code organization and packaging/deploying.
• Good knowledge of current and emerging technologies and trends.
Job Responsibilities:
• Design, Development and Delivery of Java based enterprise-grade applications.
• Ensure best practices, quality and consistency within various design and development phases.
• Develop, test, implement and maintain application software working with established processes.
Work with QA and help them for test automation
• Work with Technical Writer and help them documenting the features you have developing.
Education and Experience:
• Bachelor’s / master’s degree in computer science or information technology or related field
Job Description
Wissen Technology is now hiring for a Java Developer - Mumbai/Bangalore with hands-on experience in Core Java, multi-threading, algorithms, data structure and SQL skills.
We are solving complex technical problems in the financial 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. - 3 to 10 years.
- Experience in Core Java 5.0 and above,Spring.
- Extensive experience in developing enterprise-scale n-tier applications for financial domain. 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, preferably Sybase database.
- Good knowledge of multi-threading and high-volume server-side development.
- Experience in sales and trading platforms in investment banking/capital markets.
- 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.
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.
Responsibilities:
- Experience and working knowledge of Java 8, Hibernate, Spring Boot, Microservices and REST API is mandatory
- Expert understanding of the object-oriented design and programming concepts
- Strong problem solving skills, data structures and algorithms and multithreading
- Good understanding of AWS and cloud-native technologies
- Knowledge of AWS services - RDS, DynamoDB, Elastic Search, Kinesis. Experience of working with AWS SDK is preferred.
- Good understanding of CI/CD and Jenkins pipeline
- Experience of writing unit tests using Junit/Mockito
- Knowledge of Integration Testing framework like Cucumber is required.
- Proficient in Git commands and branching concepts
JAVA SPRING BOOT
Mandate Skills: Java+Springboot (Mandatory), Angular is add on
This is Java lead developer role based in Pune India. You should be ready to take challenges and passionate about CI/CD practices. You should be a good team player with excellent sense of ownership & responsibility. Technical skills :
- You have experience building applications on Spring Framework, Springboot & RESTFul web services is must.
- Hands on experience in Front-End technologies such as Angular JS is preferable.
- You have experience working on Unix / Linux.
- You have DB query experience on Oracle.
- Effective & clear communication Understands the value of diversity in the workplace and is dedicated to fostering an inclusive culture in all aspects of working life so that people from all backgrounds receive equal treatment, realize their full potential and can bring their full, authentic selves to work.

About the job
We focus on client adoption of disruptive technologies, technology architecture and providing specialized skills related to integration, custom software engineering, testing, application modernization, agile and more. We help our clients with the most complex projects including working in open web platforms, DevOps platforms as well as intelligent Computing and Architecture enhancement.
We are looking for hands on, smart thinking Applications developer to join our fast-growing team of talented professionals. You will have the opportunity to work on large enterprise solutions and deliver solutions that deliver business performance for our customers.
WORK YOU’LL DO
- Design and develop microservices/APIs using either Java/Spring boot, ISTIO, Kubernetes, Docker, CI / CD Pipelines
- You would scale micro services using Kafka or similar messaging systems.
- Collaborate with clients, architects, and application architectures to understand the operational objectives and purpose of the future system integration.
- Understand the points of integration between the different systems and highlight the potential risks associated with the delivery of solutions
- Collaborate with Functional Designers and Developers in order to find best solutions
- Produce detailed functional and technical specifications.
- Assist in producing solutions with threat assessments and associated security awareness.
WHAT WE ARE LOOKING FOR
- 5- 8 years of hands-on experience designing and developing microservices using either Java/Spring Boot
- 3-5 years of experience with system integration
- Minimum of 3 years of relevant experience with API concepts and technologies such as REST, JSON, XML, SOAP, YAML, GraphQL, and Swagger
- Experience developing within agile methodology using CI/CD pipeline
- Experienced in 3-tier, n-tier, cloud computing, microservices architectures and SOA.
- Good knowledge of integration architectures
- Experience supporting and/or implementing complex integration projects
- Excellent client management skills
- Experience with Data modelling would be an asset
QUALIFICATIONS
- Experience of working in an Agile Environment
- Ability to drive design from Stories and Requirements
- Adept at UML, Design Patterns, Reusable Services Development,
- Knowledge on Scaling Microservices



Brief Overview:
Through your work at Vauld, you will have the opportunity to change money for the 21st century. We’re a leading cryptocurrency platform and are passionate about increasing economic freedom around the world.
We are looking for a Lead Backend Engineer who has hands-on experience working with and leading Product teams and has solved for and built complex backend solutions. You'll be involved with bringing features and products from idea to completion and mentoring an incredibly talented group of peers.
If you are looking for a challenging work environment where you can grow and deepen your technical skills as a backend engineer and architect, we’d love to chat with you!
Key Responsibilities:
- Working with CXO’s, product managers, devops, and frontend engineers to collaboratively own the backend-end layer for Vauld’s application.
- Architect and build highly scalable, secure features keeping the long term vision of the product.
Requirements:
- You have 7 years or more of backend development experience with expertise in designing and implementing high-performance applications.
- Worked with and built high performance products using Node Js/GoLang/ Python and have seen the product evolution cycle from PoC to Production
- You have a deep understanding of design principles and can rightly judge/implement solutions to complex problems
- You are capable of writing high-quality code that conforms to the standards and best practices in a particular language/framework.
- You have experience building a product using a mainstream library or framework.
- You love to own end to end responsibility, starting from defining the problem statement (either yourself or alongside your peers), development (PoC if needed), testing, releasing in staging & then production environment, and finally monitoring.
Preferred:
- Previous work experience in product-based startups
- Experience building for products that have scaled and have seen the product evolution
- Understands the cryptocurrency landscape
Working at Vauld:
You will join a fun and intellectually stimulating work environment. If you’re excited by the idea of making a real impact and joining a team where we pride ourselves on being disruptive and ambitious, a career with Vauld is perfect for you.
Must have skills : Experience with Core Java, Microservices, Oracle Database and SpringBoot.
Roles & Responsibility :
- Build new decentralized microservices based on decoupled Kafka architecture
- Thorough understanding of fundamentals including OOP, Design Patterns and Data Structures
- Good knowledge of design principles
- Produce clean, efficient code based on specifications
- Recommend and implement improvements
- Has proven ability to work independently or with minimal supervision
- Drive design discussions while also working with architects if a need arises
Required Skills :
- Experience building software applications professionally using Java.
- Strong understanding of troubleshooting methodologies and root cause analysis
Soft skills required :
- Excellent interpersonal and written communication skills.
- Able to pre-empt, identify and resolve problems that are non-routine or lacking in definition
- Ability to define, implement and work to a schedule
- Good time management skills.
- Attention to detail. Able to work with little or no supervision
- Ability to work with team members across the globe
- Experience with Core Java, Angular and SpringBoot is a plus.
Educational Qualifications : B.E./ ME (CS/EE) / MCA or equivalent higher-level degree
- Team with top-notch engineers, product managers, program managers, DevOps and QA following agile development methodologies
- Review functional requirements, providing technical feedback on feasibility and architectural approach and framework.
- Design and develop web / mobile applications
- Create Prototype and/or Proof of Concepts (POCs) when necessary
- Act in a technical leadership capacity: Mentor junior engineers and new team members, perform code reviews and apply technical expertise to challenging programming and design problems
- Utilize Agile Development, SCRUM / Pair / Extreme Programming methodologies
- Design and develop supporting components and microservices for the backend tiers focusing on fault-tolerance and scalability in a multi-tenant enterprise environment
- Maintain and improve the functionality and performance of the existing web applications
- Help shape and execute the technical roadmap to develop next generation features; integrate corporate- and product-level architecture principles and goals into the teams project work through designs, implementation strategies, and project planning.
- Drive a culture of quality, technical curiosity, continuous improvement, and evidence-based data driven decision making in the organization.
- Execute other Duties as assigned
- 3+ years of experience developing Backend, API and data-based applications/software
- Experience with one of the major relational databases (MySQL, Oracle, Postgres) and NoSQL databases (Mongo DB, Cassandra, Dynamo DB or such)
- Expert object-oriented programming experience using Java
- Strong OO design and programming skills in Java, Hibernate, JPA, Spring Boot
- Worked in Maven, JPA, REST services, Postman
- Working knowledge on Spring Security / Spring Batch / ZUUL / Eureka / Hysterix
- Exposure with Frontend technologies (React.js, Angular or Ruby-on-Rails)
- Require experience and Strong understanding of entire Software Development Life Cycle (SDLC), Agile (Scrum), Software design/architecture process, unit testing & Test-Driven Development (TDD)
- Experience with web services (consuming or creating)
- Experience managing Cloud infrastructure (resources and service) in AWS, Azure and/or GCP
- Strong knowledge of SOA, object-oriented programming, design patterns, multi-threaded application development
- Experience in reporting and analytics, queuing and real-time streaming systems
- Git or similar distributed SCM tools experience.

