
Job Description: We are seeking a talented Java Full Stack Developer to join our team.
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. As a Java Full Stack Developer, you will be responsible for designing, developing, and maintaining enterprise applications using Java and Angular.
You will collaborate with cross-functional teams to define, design, and ship new features, and you will work closely with Architects to ensure the technical feasibility of designs and implement them accordingly.
Required Skills:
- Exp. - 5 to 9 years.
- Experience in Core Java 8 and above, Spring (including Core, WebMvc, Batch, Cloud etc).
- 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 be able to analyze, design, develop and test complex, low-latency client-facing applications.
- Develop user interfaces for modern web applications using Angular.
- Experience with HTML5, CSS3, and JavaScript.
- Good development experience with RDBMS, preferably DB2/Sybase databases.
- 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 be able to express their design ideas and thoughts.
Good to have Skills:
- Prior experience in investment banking / capital markets.
- Experience with cloud platforms such as AWS, Azure, or Google Cloud Platform.
- Knowledge of DevOps practices and CI/CD pipelines.
- Familiarity with Agile methodologies.
- Contributions to open-source projects.
- Relevant certifications (e.g., Angular, Java).

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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Looking for a passionate developer and team player who wants to learn, contribute and bring
fun & energy to the team. We are a friendly startup where we provide opportunities to explore
and learn a lot of things(new technology/tools etc.,) in building quality products using
best-in-class technology.
Responsibilities
● Design and develop new features using Full-stack development
(Java/Spring/React/Angular/Mysql) for a cloud(AWS/others) and mobile product
application in SOA/microservices architecture.
● Design awesome features and continuously improve them by exploring alternatives /
technologies to make design improvements.
● Performance testing with Gatling (Scala).
● Work with CI/CD pipeline and tools (Docker, Ansible) to improve build and
deployment process.
● Working with QA to ensure the quality and timing of new release deployments.
Skills/Experience
Good coding/problem solving skills and interest in learning new things will be the key.
Time /Training will be provided to learn new technologies/tools.
● 4 or more years of professional experience in building web/mobile applications using
Java or similar technologies (C#, Ruby, Python, Elixir, NodeJS).
● Experience in Spring Framework or similar frameworks.
● Experience in any DB (SQL/noSQL)
● Any experience in front-end development using React/Vue/Angular/similar
frameworks.
● Any experience with Java/similar testing frameworks (JUnit/Mocks etc).

- Hands-on expertise in managing technical teams and work closely with business stakeholders
- Should be familiar with card testing and POS ecosystem.
- Experience with designing APIs and building platform integrations in Commerce, POS, FinTech and Payments
- Payment’s domain experience.
- Extensive experience on Base24 & SWITCH part for payment format.
- Exposure on ISO8583 Messaging system.
- API understanding and creation.
- Working knowledge on cryptographic algorithms (RSA, EC, AES, SHA variants), TLS/SSL protocols. C Symetric and A symetrics, K.M.S.
- Digital Payments technical knowledge - QR/ POS/ UPI/ BQR
- Understanding of CI/CD pipelines, Kubernetes, containerization, Docker
- Must have strong technical skills in Android APK and iOS development Concept and Web services.
- Supportability, monitoring, ops in general.
- Accurate cost models to deploy and operate
- Extensive experience in TLOG’s, data integration with downstream applications, and impact of POS changes on different financial, legal, compliance, loss prevention, etc. applications.
- Extensive experience with payment systems 7861 (EMV, payment middleware, encryption, tokenization, settlement, offline scenarios,).
- Extensive experience with different types of payment methods including credit, debit, gift cards (Both closed loop and open loop), PLCC, PayPal, AliPay, checks, etc. as well as different payment form factors like Tap N Go, contactless, swipe, EMV, Mobile, etc.
- Extensive experience with payment devices (pin pads, printers, registers, scanners).
- Experience in Node.js / Java / Python, building REST APIs, with experience/exposure to front end stack like JavaScript & React / Angular.
- Experience with Storage systems - RDBMS, NoSQL (Cassandra/MongoDB), Redis/Memcache/Aerospike.
- Experience in messaging tools like Kafka/AWS Kinesis etc...
- Design expertise for performance, scalability, fault tolerance and high availability
Technical Competencies Required:
- Experience with POS systems and Payments domain.
- Demonstrated experience for systems architecture, design, and integration for POS systems
- Java and/or Node.js. Experience building micro services (REST APIs) using Node.js
- Experience with one or more RDBMS databases like MySql, PostGreSQL
- Experience with one or more NoSQL databses like MongoDB, Cassandra, DynamoDB, Aerospike, Elastic Search, Redis, neo4j etc.,
- Caching technologies like: Redis, Elasticache,
- Cloud Providers like: AWS/ Google Cloud / Azure
- CI / CD : Jenkins, Docker, Kubernete
We are seeking an experienced Senior Java Full Stack Consultant to join our dynamic team. The successful candidate will be responsible for developing high-quality software solutions using Java technologies and contributing to the design and architecture of complex applications. As a consultant, you will collaborate with clients to understand their business needs and provide expert guidance and technical leadership throughout the software development lifecycle. The ideal candidate is a self-motivated individual with a strong background in Java development, full-stack web development, and a proven track record of delivering successful projects.
Responsibilities:
- Collaborate with clients to gather and analyze business requirements, and translate them into technical specifications and solutions.
- Design, develop, and deploy high-quality software applications using Java technologies.
- Develop and maintain scalable and secure web applications using front-end and back-end technologies such as HTML, CSS, JavaScript, AngularJS, Spring, Hibernate, and SQL.
- Perform code reviews to ensure adherence to coding standards, best practices, and proper documentation.
- Conduct thorough testing and debugging of applications to ensure software quality and reliability.
- Provide technical leadership and mentorship to junior developers on the team.
- Collaborate with cross-functional teams, including project managers, designers, and other developers, to deliver projects on time and within budget.
- Stay updated with the latest industry trends and technologies, and recommend innovative solutions to enhance software development processes and practices.
- Participate in meetings and discussions with clients to understand their needs, provide technical advice, and present project progress and deliverables.
Qualifications:
- Bachelor's degree in Computer Science, Software Engineering, or a related field. Master's degree is a plus.
- Proven experience (5+ years) as a Java Full Stack Developer, Consultant, or similar role.
- Strong proficiency in Java programming language and frameworks such as Spring, Hibernate, and AngularJS.
- Experience with front-end technologies including HTML, CSS, JavaScript, and modern JavaScript frameworks (e.g., React, Vue.js).
- Solid understanding of database concepts and experience with SQL and ORM tools.
- Expertise in software development methodologies and best practices, including Agile and Scrum.
- Familiarity with cloud platforms such as AWS or Azure.
- Strong analytical and problem-solving skills with the ability to troubleshoot complex issues.
- Excellent communication and interpersonal skills, with the ability to effectively collaborate with clients and team members.
- Demonstrated ability to lead projects and mentor junior developers.
- Self-motivated with a passion for continuous learning and professional development.
Preferred Qualifications:
- Experience in developing and deploying microservices architectures.
- Knowledge of DevOps practices and tools such as Jenkins, Docker, and Kubernetes.
- Familiarity with testing frameworks such as JUnit and Selenium.
- Certification in Java programming or related technologies.
We offer competitive compensation packages, a collaborative work environment, and opportunities for growth and professional development. If you are a highly skilled Java Full Stack Developer looking for a challenging and rewarding role, we would love to hear from you.
Requirements:
- 10+ years of software development experience in java.
- Knowledge of multiple front-end languages and libraries (e. g. HTML/ CSS, JavaScript/Typescript, XML, jQuery)
- Familiarity with RESTful APIs.
- Experience with Micro Services based architecture
- Experience with Angular 5 Angular 8 and/or experience with React JS
- Strong debugging/troubleshooting skills.
- Good understanding of SDLC, Agile methodologies
- Proven experience as a Full Stack Developer.
- Experience developing desktop and mobile applications
- Familiarity with common stacks Knowledge of multiple back-end languages (e. g. C#, Java, Python) and JavaScript frameworks (e. g. Angular, React, Node.js )Familiarity with Docker and Kubernetes
- Familiarity with databases (e. g. MySQL, PostgreSQL), web servers (e. g. Tomcat, Apache).
- Excellent communication and ability to lead a 5-10 member team
Responsibilities:
- Responsible for the entire development process for the Internal IP (e.g. Quality Fusion)
- Work with development teams and product managers to ideate software solutions
- Analyzing user requirements, envisioning system features and functionality.
- Design, build, and maintain efficient, reusable, and reliable codes by setting expectations and features priorities throughout the development life cycle.
- Working with Senior leadership and stakeholders to present ideas and 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 APIsTest software to ensure responsiveness and efficiency in troubleshooting, debug and upgrade software
- Create security and data protection settings.
Micro services Lead: Experience: 7+yrs
Micro services Architect: Experience: 10+yrs
Micro service developer : Experience : 4+Years
Notice Period: Immediate to 15 Days.
Required skills : Java, J2EE with Microservices, Springboot, Spring cloud,Kafka,Redis,Nodejs, Any cloud
Ionic/React Native/ AngularJS / Javascript, Cordova, HTML5, CSS
Requirements
• Good Knowledge of Hybrid app development and Enterpise Business applications
• Expertise in using Mobile App frameworks
• Experience in using REST API’s, Webservice and JSON
• Knowledge of sqlite and web storage
• Good in designing
• Good communication Skill
• Ability to work in a team
• Familiarity with Native Android is a plus
Good for you to have
UI_UX Engineer (Cloud platform)
MVC Framework (Desirable): Grails, Struts or Spring MVC
Scripting (Desirable): Groovy, Perl, python, shell or ruby.
You will definitely possess these technical skills
Core skill set (must): JavaScript, AJAX, HTML, CSS, MySQL, Core Java, J2EE technologies
Working Knowledge (must): Web application development.
Good knowledge of data structures and algorithms.
Application Server: JBoss/Wild-fly, Web logic or Web sphere
Tools (Must): JavaScript debuggers.
We are looking for a highly skilled computer programmer who is comfortable with both front and back end programming. Full Stack Developer will responsible for developing and designing front end web architecture, ensuring the responsiveness of applications and working alongside graphic designers for web design features, among other duties.Full Stack Developer will be required to see out a project from conception to final product, requiring good organizational skills and attention to detail.
Responsibilities
- Developing front end website architecture.
- Designing user interactions on web pages.
- Developing back end website applications.
- Creating servers and databases for functionality.
- Ensuring cross-platform optimization for mobile phones.
- Ensuring responsiveness of applications.
- Working alongside graphic designers for web design features.
- Seeing through a project from conception to finished product.
- Designing and developing APIs.
- Meeting both technical and consumer needs.
- Staying abreast of developments in web applications and programming languages.
Qualifications
- Bachelor's degree
- 1-5 years of experience in programming
- Strong communication, conceptual thinking, typography skills and design skills
- Portfolio of work








