
Java Developer – Job Description Wissen Technology is now hiring for a Java Developer - Bangalore/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. - 3 to 8 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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About the Job
As a Cloud Backend Engineer you will design, develop, and maintain scalable and reliable backend systems in cloud environments. You will be responsible for building cloud-native applications, optimizing backend performance, and ensuring seamless integration with frontend services and third-party systems.
What You’ll Be Doing
- Backend Development
- Design and implement scalable and high-performance backend services and APIs for cloud-based applications.
- Develop microservices architectures and serverless functions to support business needs.
- Ensure backend systems are secure, reliable, and performant, adhering to best practices and industry standards.
- Cloud Infrastructure and Deployment
- Build and manage cloud infrastructure using platforms such as AWS, Google Cloud Platform (GCP), or Azure.
- Deploy and maintain backend services using cloud-native technologies (e.g., Kubernetes, Docker, AWS Lambda, Google Cloud Functions).
- Implement and manage CI/CD pipelines to automate deployment processes and ensure smooth delivery of updates.
- Performance Optimization
- Monitor and optimize the performance of backend services, including database queries, API responses, and system throughput.
- Implement caching strategies, load balancing, and other performance-enhancing techniques to ensure scalability and responsiveness.
- Troubleshoot and resolve performance issues and system bottlenecks.
- Database Management
- Design and manage relational and NoSQL databases, ensuring data integrity, scalability, and performance.
- Implement data access patterns and optimize queries for efficient data retrieval and storage.
- Ensure backup, recovery, and data security practices are in place.
- Integration and Collaboration
- Collaborate with frontend developers, DevOps engineers, and other stakeholders to integrate backend services with frontend applications and third-party systems.
- Participate in architectural discussions and provide input on system design and technology choices.
- Ensure clear communication and documentation of backend services, APIs, and system interactions.
- Security and Compliance
- Implement security best practices to protect backend services from threats and vulnerabilities.
- Ensure compliance with relevant regulations and standards, including data privacy and protection requirements.
- Conduct regular security assessments and vulnerability scans to maintain system integrity.
- Testing and Quality Assurance
- Develop and maintain automated tests for backend services, including unit tests, integration tests, and end-to-end tests.
- Perform code reviews and participate in quality assurance processes to ensure high code quality and reliability.
- Monitor and address issues identified during testing and production deployments.
- Documentation and Knowledge Sharing
- Document backend services, APIs, and infrastructure setups to facilitate knowledge sharing and support.
- Create and maintain technical documentation, including architecture diagrams, API specifications, and deployment guides.
- Share knowledge and best practices with team members and contribute to a collaborative development environment.
What We Need To See
- Strong experience in backend development, cloud technologies, and distributed systems, with a focus on building robust, high-performance solutions.
- Minimum 5 years of experience in backend development, with a strong focus on cloud-based applications.
- Proven experience with cloud platforms (AWS, GCP, Azure) and cloud-native technologies.
- Experience in designing and implementing RESTful APIs, microservices, and serverless architectures.
- Technical Expertise in:
1. Backend Development
- Strong experience with backend programming languages such as Node.js, Python
- Expertise in working with frameworks such as NestJS, Express.js, or Django.
2. Microservices Architecture
- Experience designing and implementing microservices architectures.
- Knowledge of service discovery, API gateways, and distributed tracing.
3. API Development
- Proficiency in designing, building, and maintaining RESTful and GraphQL APIs.
- Experience with API security, rate limiting, and authentication mechanisms (e.g., JWT, OAuth).
4. Database Management
- Strong knowledge of relational databases (e.g., PostgreSQL, MySQL) and NoSQL databases (e.g. MongoDB).
- Experience in database schema design, optimization, and management.
5. Cloud Services
- Hands-on experience with cloud platforms such as Azure,AWS or Google Cloud.
6. Performance Optimization
- Experience with performance tuning and optimization of backend services.
7. Security
- Understanding of security best practices and experience implementing secure coding practices.
- Soft Skills:
- Strong problem-solving skills and attention to detail.
- Excellent communication and collaboration skills, with the ability to work effectively in a team environment.
- Ability to manage multiple priorities and work in a fast-paced, dynamic environment.
Hiring: Senior Java Full Stack Developer
Exp: 8-13 Years
Location: Bangalore-HAL Main Road [WFO 3 Days]
NP: Only Immediate Joiners
Mandatory Skills: Core Java, AWS, Microservices, ReactJS, Redux
Responsibilities
Core Java Expertise: Utilize your deep knowledge of Core Java to develop robust, high-performance server-side applications.
Spring Boot & Microservices: Design, develop, and maintain Microservices-based applications using Spring Boot, ensuring scalability, performance, and reliability.
Frontend Development: Develop responsive and interactive user interfaces using React.js and Redux, ensuring a seamless user experience.
Role / Purpose - Lead Developer - API and Microservices
Must have a strong hands-on development track record building integration utilizing a variety of integration products, tools, protocols, technologies, and patterns.
- Must have an in-depth understanding of SOA/EAI/ESB concepts, SOA Governance, Event-Driven Architecture, message-based architectures, file sharing, and exchange platforms, data virtualization and caching strategies, J2EE design patterns, frameworks
- Should possess experience with at least one of middleware technologies (Application Servers, BPMS, BRMS, ESB & Message Brokers), Programming languages (e.g. Java/J2EE, JavaScript, COBOL, C), Operating Systems (e.g. Windows, Linux, MVS), and Databases (DB2, MySQL, No SQL Databases like MongoDB, Cassandra, Hadoop, etc.)
- Must have experience implementing API Service architectures (SOAP, REST) using any of the market-leading API Management tools such as Apigee and frameworks such as Spring Boot for Microservices
- Should have Advanced skills in implementing API Service architectures (SOAP, REST) using any of the market-leading API Management tools such as Apigee or similar frameworks such as Spring Boot for Microservices
- Appetite to manage large-scale projects and multiple tracks
- Experience and knowhow of the e-commerce domain and retail experience are preferred
- Good communication & people managerial skills
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.
Work on the development backend systems for our first product
Build reliable, secure and performant backend systems
Drive test coverage and continuous delivery automation within the team
Requirements
3-5 years of software development experience
Strong computer science fundamentals
Good knowledge of Java ecosystem
Can write code that is readable, maintainable and performant
Good understanding of relational databases, transactions, entity-relationship modeling
Comfortable writing multi-threaded programs
Desired Skills and Experience
Java,J2EE,Spring,Struts
Object oriented design patterns
Maven build process and how Maven works
Working knowledge and good proficiency in Git , Git repo , git bash and git commands
Programming logic and reasoning
Learnability
- Deep understanding of technologies and architecture for a scalable and highly available set-up
- Experienced in Java/Golang and related Technologies like Spring/Hibernate
- Strong networking and Operating Systems fundamentals
- Experienced in Streaming technologies like Kafka
- Experience working with SQL and NoSQL Databases
- Experienced in developing the long-term tech strategy for analytics and translate that into an achievable roadmap
Intro
We are looking for an experienced Senior Software Engineer to join our team and drive the technology growth of our pay later platform. At Rely, we want passionate and talented individuals that want a challenge building the next generation payment products for Millennials across Asia. Together we will build the best products using amazing technology.
What will you do
- Design and implement business critical, high performance large scale services.
- Translate business requirements into scalable and extensible design.
- Coordinate with cross functional teams (Data, UX, QA etc.) on planning and execution.
- Continuously improve code quality, product execution and customer delight.
- Proactively manage stakeholder communication related to deliverables, risks, changes and dependencies.
- Building and managing automated build/test/deployment environments.
- Lead team members on functional and nonfunctional requirements and spread goals across the team.
What will you need
- 3+ years of hands-on experience with python and a backend framework (ideally django)
- 1+ years Hands-on experience working with Javascript and JS frameworks (Angular, React)
- Hands-on experience in designing, developing, testing and deploying applications large scale applications in any language or stack
- Experience working with high scale distributed systems.
- Practical knowledge of scalable software design.
- Good working knowledge of AWS
- Proficient with APIs, web protocols, OAuth, git.
- Ability to understand and implement Continuous Integration and Continuous Delivery.
- Well versed with Lean methodologies, TDD and Test Engineering and Automation.
- Ability to design and implement low latency RESTful services.
- Willingness to learn new languages and methodologies.
What would be a bonus
- Experience in production environments with large data sets
- Experience in scaling systems to millions of users.
- Work experience in a fast-growth startup
- Experience in DevOps tools but not limited to Docker, Kubernetes
- Experience in Gunicorn and Nginx










