Java Developet at Wissen Technology · Mumbai · 5 - 12 years · Profitable · Posted 20 Jun 2025

Company Name – Wissen Technology
Group of companies in India – Wissen Technology & Wissen Infotech
Work Location - Bangalore/Mumbai
Java Developer – Job Description
Wissen Technology is now hiring for a Java Developer - Mumbai with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL.
We are solving complex technical problems in the 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. - 5+ years.
- 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.
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.

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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Role & Responsibilities
As a Founding Engineer, you'll join the engineering team during an exciting growth phase, contributing to a platform that handles complex financial operations for B2B companies. You'll work on building scalable systems that automate billing, usage metering, revenue recognition, and financial reporting—directly impacting how businesses manage their revenue operations.
This role is ideal for someone who thrives in a dynamic startup environment where requirements evolve quickly and problems require creative solutions. You'll work on diverse technical challenges, from API development to external integrations, while collaborating with senior engineers, product managers, and customer success teams.
Key Responsibilities
- Build core platform features: Develop robust APIs, services, and integrations that power billing automation and revenue recognition capabilities.
- Work across the full stack: Contribute to backend services and frontend interfaces to ensure seamless user experiences.
- Implement critical integrations: Connect the platform with external systems including CRMs, data warehouses, ERPs, and payment processors.
- Optimize for scale: Design systems that handle complex pricing models, high-volume usage data, and real-time financial calculations.
- Drive quality and best practices: Write clean, maintainable code and participate in code reviews and architectural discussions.
- Solve complex problems: Debug issues across the stack and collaborate with cross-functional teams to address evolving client needs.
The Impact You'll Make
- Power business growth: Enable fast-growing B2B companies to scale billing and revenue operations efficiently.
- Build critical financial infrastructure: Contribute to systems handling high-value transactions with accuracy and compliance.
- Shape product direction: Join during a scaling phase where your contributions directly impact product evolution and customer success.
- Accelerate your expertise: Gain deep exposure to financial systems, B2B SaaS operations, and enterprise-grade software development.
- Drive the future of B2B commerce: Help build infrastructure supporting next-generation pricing models, from usage-based to value-based billing.
Ideal Candidate Profile
Experience
- 5+ years of hands-on Backend Engineering experience building scalable, production-grade systems.
- Strong backend development experience using one or more frameworks: FastAPI / Django (Python), Spring (Java), or Express (Node.js).
- Deep understanding of relevant libraries, tools, and best practices within the chosen backend framework.
- Strong experience with databases (SQL & NoSQL), including efficient data modeling and performance optimization.
- Proven experience designing, building, and maintaining APIs, services, and backend systems with solid system design and clean code practices.
Domain
- Experience with financial systems, billing platforms, or fintech applications is highly preferred.
Company Background
- Experience working in product companies or startups (preferably Series A to Series D).
Education
- Candidates from Tier 1 engineering institutes (IITs, BITS, etc.) are highly preferred.
ey Responsibilities:
- Design, develop, and maintain microservices using Java (Spring Boot).
- Implement RESTful APIs and ensure integration with front-end and third-party services.
- Work with AWS services such as EC2, ECS, Lambda, S3, RDS, API Gateway, CloudWatch, etc.
- Utilize CI/CD pipelines (Jenkins / GitHub Actions / AWS CodePipeline) for deployment automation.
- Implement security, scalability, and high availability best practices in microservice architecture.
- Collaborate with DevOps, QA, and Product teams to deliver robust solutions.
- Monitor and troubleshoot production issues using AWS CloudWatch / ELK / Prometheus & Grafana.
- Participate in code reviews, design discussions, and agile ceremonies.
Required Skills & Qualifications:
- Strong proficiency in Java 8+, Spring Boot, Spring Cloud, and RESTful APIs.
- Solid understanding of microservices architecture and service discovery / communication patterns (Eureka, Feign, Ribbon, etc.).
- Hands-on experience with AWS Cloud (ECS, Lambda, API Gateway, RDS, DynamoDB, S3, CloudFormation).
- Experience with Docker and Kubernetes for containerization and orchestration.
- Proficient in RDBMS / NoSQL databases (MySQL, PostgreSQL, MongoDB).
- Familiar with CI/CD pipelines, Git, and DevOps best practices.
- Knowledge of message brokers (Kafka, RabbitMQ, SQS) is a plus.
- Strong debugging, problem-solving, and analytical skills.
Job Description:
- Proficient in software Design and development and familiar with technologies - Java, Java-J2EE, Spring Boot, Ajax, REST API, Micro services etc.
- Working knowledge of any SQL database (MySQL, Oracle etc)
- Working knowledge of No-SQL database (Mongo or Dynamo DB)
- Experience in unit testing using Junit or Mockito
- Experience in designing and architecting systems with high scalability and performance requirements.
- Ability to design infrastructure for performance evaluation and reporting of cloud-based services, namely AWS
- In depth knowledge of key AWS services like EC2, S3, Lambda, CloudWatch etc..
- Certification on AWS architecture desirable
- Excellent communication skills
- Ability to effectively articulate technical challenges and solutions
- Skilled in interfacing with internal and external technical resources
- Good in debugging problems and mentoring teams on technical front
Roles and Responsibilities:
- Participate and contribute in platform requirements/story development.
- Contribute to the design, coding for the requirements/stories and also participate in code and design reviews.
- Develop use cases and do unit test cases and execute them part of continuous integration pipeline.
Required Experience - 2+ Years
Work location - Remote
Must have skills - PHP , YII , OOPS
Requirements:
- Experience in Frameworks: YII
- Must have good analytical and problem solving skills.
- Good Knowledge of OOPS.
- Write error free code and follow coding standards. Able to perform Code Review job.
- Work closely with QA person to assist in the testing process.
- Perform R&D tasks if assigned and communicate with the Designer and UI team.
- Build reusable code and libraries for future use.
- Able to work closely with the team and meet the tight deadlines where necessary.
- Strong Communication Skills.
· 3+ yrs of experience in product development (Preferring SaaS based)
· Must have experience in Java web-based application development
· Hands on development experience on Java/J2EE, Springboot, Spring, Struts, Hibernate, REST Services
· Experience on HTML, JavaScript, JQuery
· Hands on experience on database-writing queries/procedures
· Experience on SVN,GIT,
· Knowledge of Server configuration
· Knowledge of cloud preferably AWS

Java with cloud
|
Core Java, SpringBoot, MicroServices |
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- DB2 or any RDBMS database application development |
|
- Linux OS, shell scripting, Batch Processing |
|
- Troubleshooting Large Scale application |
|
- Experience in automation and unit test framework is a must |
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- AWS Cloud experience desirable |
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- Agile Development Experience |
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- Complete Development Cycle ( Dev, QA, UAT, Staging) |
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- Good Oral and Written Communication Skills |
Experience- 1 year is sufficient to apply
Salary- Upto 35k per month.
- 3+ years of experience with Ruby On Rails.
- Strong Project & Time Management Skills, along with the ability to apply these skills while working independently, or as part of a team.
- Knowledge of blockchain technology, smart contracts and cryptocurrency will be an added advantage
- Experience in fintech domain will be another added advantage
- Bachelor’s degree in computer programming, computer science, or a related field.
- Fluency or understanding of specific languages, such as Java, PHP, or Python, and operating systems may be required.









