
Job Description:
As per our conversation, please find below the job description for your review.
· Strong written/verbal communication skills
· Minimum 5-14 Years of Core Java Programming with Collections Framework, Concurrent Programming, Multi-threading (Good knowledge in Executor service, Forkjoin 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.
· While you may already know about Wissen and the company history, here is a quick rundown for you.

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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About Impact Analytics
Impact Analytics is an agentic-first AI software company transforming retail merchandising through cutting-edge AI, LLMs, and Generative AI technologies. As a fast-growing Series D company with deployments across five continents, it is building both industry-leading merchandising solutions and foundational AI agents that are redefining how retail decisions are made. What makes Impact Analytics unique is its combination of deep retail domain expertise, strong innovation culture, and global presence. It is one of the few India-born AI companies recognized globally by organizations like Fortune, Gartner, and the Inc. 5000.For candidates looking to work on next-generation AI products with global scale and real-world impact, Impact Analytics is an exciting place to build your career. Here’s a link to our website: www.impactanalytics.co.
The impact that you will be making
We are seeking a Senior Software Engineer – Backend to design and build scalable backend systems that power Android-first mobile applications. The ideal candidate will have strong backend engineering expertise, experience supporting mobile applications, and a passion for building high-performance, reliable distributed systems that operate efficiently under constrained network conditions.
You will work closely with Android developers and cross-functional teams to build APIs and backend services that enable seamless mobile experiences, including offline synchronization, scalability, and high availability
What lands you in this role
Key Responsibilities
- Design, develop, and maintain scalable backend services and RESTful APIs for Android/mobile applications.
- Build backend systems optimized for Android-first applications with a focus on performance, reliability, and scalability.
- Develop APIs that perform efficiently in low-bandwidth and intermittent network environments.
- Design and implement backend workflows that support offline synchronization, conflict resolution, and data consistency.
- Develop secure, resilient, and highly available microservices.
- Optimize application performance through efficient database design, caching strategies, and API optimization.
- Collaborate closely with Android engineers, Product Managers, QA, and DevOps teams throughout the software development lifecycle.
- Participate in architecture discussions, code reviews, and technical design decisions.
- Leverage AI-assisted development tools to improve engineering productivity and code quality.
Required Skills
- 4–7 years of professional experience in backend software development.
- Strong proficiency in Kotlin for backend development.
- Experience building backend systems supporting Android/mobile applications.
- Strong understanding of RESTful APIs, microservices, and distributed systems.
- Hands-on experience with Gradle (Kotlin DSL/KTS) for build automation and dependency management.
- Familiarity with Android Studio for debugging, API integration, and collaboration with Android teams.
- Experience with modern backend frameworks and scalable application architecture.
- Knowledge of relational and/or NoSQL databases such as PostgreSQL, MySQL, MongoDB, or similar.
- Experience with caching technologies (Redis) and messaging/event streaming platforms (Kafka or RabbitMQ).
- Hands-on experience with Google Cloud Platform (GCP) or equivalent cloud platforms.
- Proficiency with GitHub and modern Git-based development workflows.
- Experience using Visual Studio Code (VS Code).
- Familiarity with AI-powered developer tools such as Cursor, Windsurf, or similar Agentic IDEs.
- Strong understanding of CI/CD pipelines, containerization, and cloud-native application development.
- Excellent debugging, analytical, and problem-solving skills.
What we offer
- An opportunity to be part of some of the best enterprise SaaS products to be built out of India.
- Opportunities to quench your thirst for problem-solving, experimenting, learning, and implementing innovative solutions.
- A flat, collegial work environment, with a work hard, play hard attitude.
- A platform for rapid growth if you are willing to try new things without fear of failure.
- Remuneration with best-in-class industry standards with generous health insurance cover
Some of our accolades include:
- Ranked as one of America's Fastest-Growing Companies by Financial Times for five consecutive years: 2020-2024.
- Ranked as one of America's Fastest-Growing Private Companies by Inc. 5000 for seven consecutive years: 2018-2024.
- Voted #1 by more than 300 retailers worldwide in the RIS Software LeaderBoard 2024 report.
- Ranked #72 in America’s Most Innovative Companies list in 2023—by Fortune—alongside companies like Microsoft, Tesla, Apple, IBM, etc.
- Forged a strategic partnership with Google to equip retailers with cutting-edge generative AI tools.
- Recognized in multiple Gartner reports, including Market Guides and Hype Cycle, spanning assortments, merchandising, forecasting, algorithmic retailing, and Unified Price, Promotion, and Markdown Optimization Applications.
• 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.
Hi,
As discussed, please refer to below Job description and revert with you updated resume –
About Client : Client is a digital accelerator to Startups, SMEs, MSMEs, and large enterprises with a significant contribution across 22+ industries including BFSI, Healthcare, Ecommerce & Retail, Education & eLearning, Insurance, Tech Startups, Government & Semi-Government, and more. Backed with an impressive experience of 25+ years and a fast-growing family of 4000+ engineering professionals our capabilities span across IT Consulting, Strategy Planning & Execution, Business Process Re-engineering, IT Modernization, and Business Analysis Consulting, our solutions are devised meticulously to address the needs of specific industries.
We are a CMMI Level 5 organization global IT Solution provider and Outsourcing company headquartered in Mumbai and footprints with 10 delivery centres in India and 15 global offices. Our success portfolio boasts of 7500+ projects accomplished across 1500+ clients in 50+ countries with client retention rate as high as 85%
Job Description :
Java Architect (10+ Years)
Location: Navi Mumbai, CBD Belapur
Domain: Banking (Payment Gateway Project)
NOTE: 1st and 3rd Saturdays working as per banking norms
Education: B.E. or Graduation in Computer Science or related field
Key Responsibilities:
• Architectural Leadership: Lead the architecture and design of complex, scalable, and secure banking applications, focusing on payment gateway solutions.
• Technology Stack Mastery: Provide expertise in Java, Spring, Spring Boot, Microservices, Hibernate, REST API, Oracle SQL, and cloud-native architectures using AWS.
• Spring Validation & Authorization: Ensure secure and validated input handling using Spring Validation, and implement robust authorization mechanisms with Spring Security.
• Cloud Integration: Design and implement cloud-native architectures using AWS, including services like EC2, S3, RDS, Lambda, and API Gateway.
• Security Standards: Ensure adherence to banking security st OAuth2, JWT, and encryption protocols.
• Database Design: Oversee the design and optimization of relational databases, focusing on Oracle SQL and knowledge of NoSQL databases like MongoDB.
• Performance Optimization: Implement strategies for application performance tuning, caching, and scalability.
• Collaboration & Mentorship: Work closely with cross-functional teams, providing technical guidance and mentoring to developers.
• Stakeholder Engagement: Collaborate with business stakeholders to ensure architectural alignment with business objectives and technical constraints.
• Code Quality & Reviews: Conduct regular code reviews, ensuring compliance with best practices and architectural standards.
Skills and Qualifications:
• Extensive Experience: 8+ years in Java development and architecture, with a proven track record in the banking domain, particularly in payment gateway projects.
•Technological Proficiency: Deep expertise in Java, Spring, Spring Boot, Microservices, Hibernate, REST API, Oracle SQL, Spring Validation, Spring Security for authorization, AWS, Docker, Kubernetes, and Jenkins.
• Cloud & DevOps Knowledge: Good understanding of cloud-native applications and DevOps practices.
• Security Focus: Experience in implementing security protocols and practices in a banking environment.
• Leadership & Communication: Strong leadership, communication, and stakeholder management skills.
• Innovative Thinking: Ability to think critically and provide innovative solutions to complex problems.
Required Documents:
• 10th and 12th passing certificates and marksheets.
• Graduation marksheets and passing certificate.
• Graduation degree (Convocation) certificate. • All employer offer letters and relieving letters (with stamp and CIN number on letterhead)
Regards
Amit Kumar Pandey
Responsibilities:
- Lead simultaneous development for multiple business verticals.
- Design & develop highly scalable, reliable, secure, and fault-tolerant systems.
- Ensure that exceptional standards are maintained in all aspects of engineering.
- Collaborate with other engineering teams to learn and share best practices.
- Take ownership of technical performance metrics and strive actively to improve them.
- Mentors junior members of the team and contributes to code reviews.
Requirements:
- A passion to solve tough engineering/data challenges.
- Be well versed with cloud computing platforms AWS/GCP
- Experience with SQL technologies (MySQL, PostgreSQL)
- Experience working with NoSQL technologies (MongoDB, ElasticSearch)
- Excellent Programming skills in Python/Java/GoLang
- Big Data streaming services (Kinesis, Kafka, RabbitMQ)
- Distributed cache systems(Redis, Memcache)
- Advanced data solutions(BigQuery, RedShift, DynamoDB, Cassandra)
- Automated testing frameworks and CI/CD pipelines Infrastructure orchestration(Docker/Kubernetes/Nginx)
- Cloud-native tech like Lambda, ASG, CDN, ELB, SNS/SQS, S3 Route53 SES
Job Overview:
We are looking for a Java Developer with experience in building high-performing, scalable,
enterprise-grade applications.
You will be part of a talented software team that works on mission-critical applications. Java
developer roles and responsibilities include managing Java/Java EE application development
while providing expertise in the full software development lifecycle, from concept and design to
testing.
Responsibilities and Duties:
• Contribute to all phases of the development lifecycle
• Write well designed, testable, efficient code
• Ensure designs should follow compliance with specifications
• Prepare and produce releases of software components
• Support continuous improvement by investigating alternatives and technologies and
presenting these for architectural review
Qualifications:
• BE/MCA/BCA/MS/BS degree in Computer Science, Engineering, or a related subject
• Minimum 1 to 4 years of experience
• Proven hands-on Software Development experience
• Proven working experience in Java development
• Hands on experience in designing and developing applications using Java EE
platforms
• Excellent knowledge of Relational Databases, SQL and ORM technologies (JPA2,
Hibernate)
• Experience in the Spring Framework
• Very good English communication skills
• Optional:
o Good to have the knowledge of Angular JS framework.
o Experience to work on the Micro service architecture.
o Experience to work with Git hub & bitbucket.
o Agile methodology.

Detailed Job Description :
Total Exp-6-9 Yrs
Location-Noida(Singapore Travel - In next 3 Months (short term)
Mandatory:
- 6-8 years of total IT experience delivering enterprise-scale applications or product implementations
- 1-3 years of experience working as a technical lead.
- Working Experience in ISO20022, SWIFT, Remittance
- Language & Frameworks: Java, Spring Boot, Spring, Any ORM
Preferred:
- Working experience in TCS Bancs or Integration with TCS Bancs
- Database: SQL Server
- Working experience in managing projects in Java Stack.
- Good Knowledge of Microsoft stack, Static Code analyzers, Overall SDLC Lifecycle, Design & Architecture
Company Name & Profile :
It is a leader in the integration of IT and network technologies and brings more than 100 years of expertise in technological innovation to provide solutions for empowering people, businesses and society. Headquartered in Japan, it started operations in India in the 1950s, accelerating its growth through the expansion of business to global markets. The company in India expanded its business from telecommunications to public safety, logistics, transportation, retail, finance, unified communication and IT platforms, serving across governments, businesses as well as individuals. With its Centre of Excellence for analytics platform solutions, big data, biometrics, mobile and retail, the company in India offers innovative new services and solutions for India and global markets. It operates across India with offices in New Delhi (head office), Noida, Mumbai, Chennai, and Bengaluru.
Work Location:Mumbai,Gurgoan,Indore,Bangalore,Hyderabad
- J2EE
- Web services
- JSON
- JSP Servlet
- Exception handling
- Multithreading
- Rest API
- Microservices
Roles and Responsibilities:
- We are looking for software developers with hands-on experience in react, firebase, and UML for a Japanese company in New Delhi.
- You should be a passionate web developer, who will work as part of a core team to build best-in-class frameworks and web / mobile applications for Japanese clients.
- You will work under a native Japanese supervisor and contribute to designing and developing mobile and web applications.
- This is a great chance for learning and upgrading yourself in an international environment. You will help in developing software and application for our customers from various industries such as IT, manufacturers, finance, services, etc. Develop by using Java, C#, JavaScript,React.js, PHP, Python, Flutter, React Native, etc.
- Experience with frontend JavaScript, in conjunction with Typescript or Flow, and modern frameworks like React, React Native, Redux, and other JS libraries is an advantage.
- Experience as a full-stack engineer is an advantage.
- Self-directed, driven, and sharp.
- You'll be surrounded by teammates with deep experience in strategy, data, code, and design, hence a great chance to learn and upgrade your skills
- Experience with project management tools and Git is an advantage.
- Strong proficiency in HTML, CSS & JavaScript.
- Hand-on experience with react, firebase, UML.
- Should be a Japanese speaker JLPT N3, JLPT N2








