
Job Description:
• Experience in Core Java, Spring Boot.
• Experience in microservices.
• Extensive experience in developing enterprise-scale systems for global organization. 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.
• Good development experience with RDBMS in SQL Server, Postgres, Oracle or DB2
• Good knowledge of multi-threading
• 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.

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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Job Title : Java Developer
Experience : 2 to 10 Years
Location : Pune (Must be currently in Pune)
Notice Period : Immediate to 15 Days (Serving NP acceptable)
Budget :
- 2 to 3.5 yrs → up to 13 LPA
- 3.5 to 5 yrs → up to 18 LPA
- 5+ yrs → up to 25 LPA
Mandatory Skills : Java 8/17, Spring Boot, REST APIs, Hibernate/JPA, SQL/RDBMS, OOPs, Design Patterns, Git/GitHub, Unit Testing, Microservices (Good Coding Skills Mandatory)
Role Overview :
Hiring multiple Java Developers to build scalable and performance-driven applications. Strong hands-on coding and problem-solving skills required.
Key Responsibilities :
- Develop and maintain Java-based applications & REST services
- Write clean, testable code with JUnit & unit tests
- Participate in code reviews, debugging & optimization
- Work with SQL databases, CI/CD & version control tools
- Collaborate with cross-functional teams in Agile setups
Good to Have :
- MongoDB, AWS, Docker, Jenkins/GitHub Actions, Prometheus, Grafana, Spring Actuators, Tomcat/JBoss
Java Developer Requirements
· Minimum 7 to 15years of experience in Java/J2EE
· Outstanding skills in Java Struts, JSP, Hibernate
· Capability to understand DB design, SQL queries
· Experience in JavaScript, JQuery, JSON and AJAX
· Strong Object Oriented Analysis and Design skills
· Knowledge in source version control such as GIT
· Understanding on Agile methodologies
No of Opening: 7
Location: Chennai/Madurai (WFO)
· Degree in Computer Science or related field.
· Experience with user interface design, database structures, and statistical analyses.
· Analytical mind-set and good problem-solving skills.
· Excellent written and verbal communication.
· Good organizational skills.
· Ability to work as part of a team.
· Attention to detail.
Overview of the role
As a Node Developer you will be collaborate with cross-functional teams to define, design and build performant modern web applications and services. Build high-quality web applications and services by writing clean and modular code.
Must have skills
- Overall 3-5 Years of experience in writing unit and integration tests to ensure the robustness and reliability of web applications and services.
- Measure and improve the performance of microservices. Catalyse growth within the team through code reviews and pair programming to maintain high development standards
- Investigate operational issues to find the root cause and propose improvements Design, build, and maintain APIs, services, and systems across Stripe’s engineering teams.
- Expert level of experience in the design and development of Web Applications, and highly scalable distributed systems.
- Should have experience in development skills using the latest technologies including NodeJS(fastify framework), Microservices, PostgreSQL, Redis, etc. Should have exposure to NoSQL and SQL development.
- Comprehensive knowledge of physical and logical data modeling, and performance tuning.
- Should possess excellent communication, presentation, and interpersonal skills.
- Ability to work collaboratively and productively with globally dispersed teams.
- Build high-performance teams and Coach teams for successful career growth.
- Experience working with relational and non-relational databases, query optimization, and designing schema
Desired Background
Bachelors/Masters Degree in Computer Science, Information Technology
- To perform requirement analysis and oversee the implementation of architectures of project scope
- To provide customized reusable solutions of project, program or operational scope
- To develop high-quality and detailed designs
- To conduct unit testing using automated unit test frameworks and identify and address possible risk by conducting mitigation action planning
- Conducting configuration of your own work or from the team and assess the technical impact of multiple technologies/strategies
- Reviewing the work of other developers with feedback for improvement (if applicable)
- Using coding standards and best practices to ensure quality deliverables
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
What are we looking for?
We are looking for hands-on coders who love what they do, have high attention to detail and are looking for challenging opportunities which involve building products from scratch. Someone who is proactive, and always keen to learn.
What will you be doing?
On a daily basis, some of your work will involve but is not limited to:
- Write clean, secure, and well-tested code
- Build tools and integrate systems to scale the effectiveness of the product
Work Culture at Merge:
Commitment to excellence - In every output, we produce as individuals and as a company, we have to strive for world-class quality. We’re making a change in the world. It will push us out of our comfort zones. We operate in a rapidly changing market and strive to deliver high-quality products faster than anyone else.
We get it done - We take ownership of what we do. Working here is about really, truly owning everything you do. There’s no such thing as “Not my job.” If you see a problem that needs solving, you can – and should – be the one to solve it
Requirements
Skills That Will Help You Excel At Merge
- You have 2 to 5 years of experience building highly reliable and scalable backend systems
- Experience in two or more languages. Go, Node.js, Python, or Java would be ideal.
- You have experience in high-throughput distributed systems and microservices
- Experience with AWS and CI/CD workflow
- Driven, and passionate about building products
- You take ownership of your code
- You have good communication skills in English
- You are familiar with security best practices
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 application development while providing expertise in the full software development lifecycle, from concept and design to testing.
Java developer responsibilities include designing, developing and delivering high-volume, low-latency applications for mission-critical systems.
Experience : 2+ years
Location : Mumbai (WFO only) Initial few months work from home
Notice Period : 0 to 30 days ( Immediate joiners are preferred)
Roles & Responsibilities :
(This role encompassing both API engineering using Java stack and web development
Experience in designing, developing, testing and successfully deploying critical and complex projects.)
- Contribute in all phases of the development lifecycle
- Write well designed, testable, efficient code
- Ensure designs are in compliance with specifications
- Prepare and produce releases of software components
- Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review
· Build reusable code and libraries for future use
Required Skill set :
· Java background with a minimum of 3+ years experience in Java technologies.
· Experience in designing and developing application backend using frameworks like Spring Boot, Spring MVC, Jersey, JPA, Hibernate, SQL, Linux, JSON, XML, OAuth etc.
· Well & good if has Experience with frontend technologies
· Experience with both SQL and NoSQL database systems and writing SQL queries
· Strong experience building, designing, and consuming Restful web services.
· Exposure of Cloud Infrastructure - AWS and Alibaba Cloud
· Excellent understanding of ORM and Database concepts
· Experience with developing unit test code using JUNIT, Power Mock/EasyMock/Mockito etc.
· Experience with Git, Maven and CI/CD pipelines to deploy on Cloud applications
· Experience & knowledge on Micro services Architecture and API development using Java, spring, Spring Boot
· Experienced in roles conducting requirements gathering, writing user stories, creating application design and using design patterns
· Good knowledge on credentials/secrets management and data encryption techniques
· Good knowledge on coding standards, design patterns, unit testing.
· Good hands-on BitBucket/Github is preferred.
● He/She is a responsive team player who can proactively contribute for building technical
strategies for applications and systems by promoting an understanding of the technology and
business roadmap.
● He /she is someone who thrives in a fun, fast-paced, dynamic, startup-like environment.
● Work very closely with various business stakeholders to drive the execution of multiple
business plans and technologies .
● Work closely with Product, Design, and Marketing to conceive features, plan projects, and
build roadmaps
● Prior experience with scalable Architecture managing team of minimum 5 engineers and
coaching, mentoring while maintaining a role with code development.
● Proven history of contributing to product strategy and shipping products with multi-functional
teams.
● Highly involved in recruitment while building team also leading app development for both
platforms
● Promote and support company policies, procedures, mission, values, and standards of ethics
and integrity.
Minimum Qualification:
● Hands-on working on Java ( {Language understanding - Java 8, Lambdas, Collections,
popular frameworks & libraries}, JVM, GC tuning, performance tuning)
● Worked on REST frameworks/libraries like Spring MVC, Spring Boot, Dropwizard, REST
Express etc
● Worked on Relational data stores viz. MySQL, Oracle or Postgres
● Worked on Non-relational data stores viz. Cassandra, HBase, Couchbase, MongoDB etc
● Worked on caching infra viz. Redis, Memcached, Aerospike, Riak etc
● Worked on Queueing infra viz. Kafka, RabbitMQ, ActiveMQ et









