java developer

Experience: 5+ years

Location: Mumbai - Andheri Marol

Company: Wissen Technology

Website: www.wissen.com

Job Description:

Wissen Technology is currently hiring experienced Full Stack Java Developers with strong expertise in Core Java, Spring Boot, front-end technologies (Angular/React), REST APIs, multithreading, data structures, and SQL.

You will be working on enterprise-grade solutions as part of a global development team tackling complex problems in domains like Banking and Finance.

This is an excellent opportunity to be part of a high-caliber, technically strong team delivering impactful solutions for Fortune 500 companies.

Key Responsibilities:

• Develop and maintain scalable, high-performance applications with a focus on both backend (Java/Spring Boot) and frontend (Angular/React).
• Participate in all phases of the development lifecycle – design, coding, testing, deployment, and maintenance.
• Work closely with cross-functional teams to understand requirements and deliver quality solutions.
• Optimize application performance and ensure responsiveness across platforms.
• Write clean, maintainable, and well-documented code.

Required Skills:

• 5+ years of hands-on experience in Java, Spring Boot.
• Strong proficiency in frontend frameworks like Angular or React.
• Experience with RESTful APIs, microservices, and web technologies (HTML, CSS, JavaScript).
• Sound knowledge of data structures, algorithms, and multithreading.
• Experience in developing and deploying enterprise-grade applications.
• Solid understanding of RDBMS (e.g., Oracle, MySQL, PostgreSQL).
• Exposure to DevOps practices, version control (Git), and CI/CD pipelines.
• Familiarity with Unix/Linux environments.
• Strong problem-solving, communication, and analytical skills.

Good to Have:

• Exposure to cloud platforms like AWS, Azure, or GCP.
• Understanding of containerization using Docker/Kubernetes.
• Knowledge of Agile methodologies.

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.

Mandatory Skills

• Backend: Java, Spring Boot
• Frontend: Angular
• Database: Oracle / SQL
• Node js

Job Description

Contribute to all software-development life-cycle phases including: domain and non-domain problem analysis, solution requirement gathering and analysis, solution design, implementation, code review, source-code control, source building deployment, validation, QA support, and production support.

Essential Duties and Responsibilities

•⁠ ⁠Maintain and enhance multi-tier messaging application suites (Java EE, Springframework, WAS, Oracle, DB2, MQ)

•⁠ ⁠Build and maintain IRIS4Health middle-tier message applications (IRIS Interop/Cache; Java, Drools, Kafka, Restful, MLLP, SQL)

•⁠ ⁠Build and maintain multi-tier Clinical Toxicology application (Angular, Java EE, Springframework, WAS, RHOS, Cache, SQL)

•⁠ ⁠Maintain stat-tracking application (two-tier Delphi, MySQL)

•⁠ ⁠Maintain and enhance Cytogenetics three-tier application (Java EE, WAS, DB2, Oracle, SQL, )

•⁠ ⁠Maintain and enhance Fibrosure application (Java EE, WAS, Derby)

•⁠ ⁠Define develop, validate, and release software products via agile processes for small and large projects

•⁠ ⁠Support applications and people via Kanban processes

•⁠ ⁠Collaborate with laboratory users to analyze problems, design and implement solutions for enterprise systems

•⁠ ⁠Provide support and troubleshooting of production systems according to an on-call schedule

•⁠ ⁠Document problem analysis, solution design, implementations, and system support guidelines

•⁠ ⁠Coach and train team members across lab system organizations to support and develop Java applications

•⁠ ⁠Communicate effectively and constructively with developers, QA, business analysts, and system users

•⁠ ⁠Design and depict via UML relational DB table models, object-oriented class models, messaging models, configuration models

•⁠ ⁠Understand, document, support, and improve inherited code and processes

•⁠ ⁠Help document knowledge and discovery with peer developers

Minimum Requirements

•⁠ ⁠Solid Java EE experience (Servlets, JMS, JSP, EJB, JCA, and JPA) development and support

•⁠ ⁠Solid InfoSystems Cache/IRIS for Health development and support

•⁠ ⁠A minimum of 1 years of JPA/ORM (Hibernate), Junit, XML/XSD, JSON experience or equivalent

•⁠ ⁠Solid SQL (and optionally PLSQL) experience

•⁠ ⁠Experience with Oracle DB including explain plan and or other query optimization techniques/tools

•⁠ ⁠Excellent verbal and written communication skills

•⁠ ⁠Strong UML modeling, ER and OO design, and data-normalization techniques

•⁠ ⁠Strong code-factoring philosophies and techniques

•⁠ ⁠Eclipse or NetBeans (or equivalent) IDE

•⁠ ⁠Strong understanding of client/server design, and smart recognition of separation-of-concern like functional behavior versus non-functional performance

Desired Requirements

•⁠ ⁠Java EE, Angular

•⁠ ⁠InfoSystem's Cache and/or IRIS for Health

•⁠ ⁠Springframework

•⁠ ⁠Modern deployment architectures using containers, API Gateways, load balancers, and AWS cloud based environments

•⁠ ⁠WebSphere or WebLogic, RHOS

•⁠ ⁠RESTful Web Services

•⁠ ⁠JMS interfacing, Apache Kafka, and IBM MQ

•⁠ ⁠Node.js/NPM, Bootstrap, or similar frameworks

•⁠ ⁠Git/BitBucket (git flow), Maven, Nexus, UCD, Jira (Kanban and SCRUM), agile workflow

•⁠ ⁠Unix shell script, DOS script

•⁠ ⁠SQL (optionally PLSQL)

•⁠ ⁠Design patterns

•⁠ ⁠HTML5, CSS3, and TypeScript development

•⁠ ⁠Ability to transform specific domain requirements into generalized technical requirements, and design and implement abstract solutions that are understandable and scalable in performance and reuse

•⁠ ⁠HL7 and/or Healthcare and/or Clinical Toxicology

•⁠ ⁠Oracle, MySQL, Derby DB

Role : Java Fullstack Developer

Location : G. noida

Budget: 1.3 LPM

Experience: 5+ years

Add PAN no & DOJ on CV

Candidate must have knowledge of JAVA / J2EE.    

Executes the development, Maintenance, and enhancement of varying complexity levels across platform systems.  

Translate the business requirements and specifications into related solutions designs to understand business needs and functional specifications. 

Write and review technical documents, including design, developments, and code review.  

Good to have knowledge of AWS, SPRING BOOT HIBERNATE, REST API .

Candidate should be able to understand Microservices architecture, continuous integration and deployment mechanism.

The ideal candidate should have a strong foundation in computer science and a passion for building high-quality solutions. The role requires hands-on experience in designing, developing, and implementing scalable and high-performance mobile applications (company is looking for an employee to build a chat application from scratch)

Responsibilities:

1. Design, develop, and maintain a mobile application

2. Write clean, scalable, and maintainable code that

adheres to best practices and industry standards

3. Test applications to ensure they meet customer requirements and are free from defects

4. Implement security and data protection measures in applications

5. Troubleshoot and debug software applications

Requirements:

1. Bachelor's degree in Computer Science or a related field

2. Experience in developing applications using Java, and Javascript.

3. Strong understanding of the software development life cycle (SDLC) and Agile methodologies

4. Experience with front-end technologies such as HTML, CSS, and JavaScript

5. Experience with database design and management, particularly with MongoDB

6. Excellent debugging and troubleshooting skills

7. Strong communication and teamwork skills

Our Tech stack:

· Java 11, Spring Boot, React.JS

· MySQL, Redis, Elastic Stack, MongoDB

· Docker, K8s

· GitHub, Jenkins

· Slack, Jira

What we're looking for:

· Minimum of 5 years of experience as a software developer.

· Excellent knowledge of Java.

· Demonstrated skills in web-based development, including REST API s and JS frameworks such as Vue JS/React.

· Experienced with cloud platforms (AWS / GCP).

· Experienced with SQL and NoSQL databases.

· Experienced with CI/CD environments.

· Familiar with container technologies (Docker, Kubernetes).

· Proficient in agile programming practices.

· Strong analytical mind with a good dose of creativity.

· Meticulous person who strives to constantly improve his/her/their competencies.

· Excellent communication skills.

Nice-to-haves:

· Familiarity with Web sockets.

· Has contributed to open source projects and can point us to his/her/their GitHub account.

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.

• Be responsible for engineering road map, architecture and scalability/quality of products.
• Effectively collaborate with Product managers, Business teams to develop long-term product roadmap and own release planning - in a fast-paced, evolving environment.
• Perform well in ambiguous situations. We are a startup with a significant product suite.
• Mentor and guide a team of engineers across various levels and areas of expertise. Help engineers make good architectural decisions, improve code quality and delivery.
• Be responsible for tech solutioning, architecture being deployed maintaining right balance b/w short term and long term outcomes – speed vs quality.
• Establish strong engineering best practices and champion their adoption.
• Define career trajectory for your team and share feedback regularly to help them grow.

• 7+ years of experience in end to end cloud software development with exposure in building scalable, fault tolerant and secure large scale distributed systems. At least 1-2 years managing eng. teams.
• Bachelors or Masters degree in engineering (preferably computer science or sister branches) from a reputed institute (preferably IITs, NITs, or other top engineering institutes).
• Deep expertise in Java & tech stack (Springboot) & micro service based architecture writing maintainable, scalable, unit-tested code. This position requires a good mix of hands-on and people management.
• Hands-on experience in low-level and high-level design with the ability to propose and validate system design.
• You are comfortable jamming on code refactoring, architecture and design principles.
• Sound understanding of web technologies (JS, HTML5 CSS), databases - SQL & NoSQL (e.g. Cassandra), distributed caches (e.g. Redis), message queues (e.g. Kafka).
• Knowledge of UI architectural patterns like MVVM, MVC, MVP etc is useful.
• Exposure to android app development is a good plus.
• You have working knowledge of CI/CD pipelines and infrastructure tools such as Docker, Kubernetes, Gradle, GIT, Jenkins, ELK, Prometheus, Grafana or equivalents.
• You are an opensource enthusiast with the curiosity to stay abreast of latest tech.
• Must be comfortable working in fast paced agile environments. Ability to plan, prioritise, estimate and execute releases with strong degree of predictability.
• Excellent people & communication skills.
• Experience with AWS stack is preferred.
• Experience with a high-growth startup is a plus.

Position Summary

The Java Software Developer designs and develops computer applications using the Java programming language. Managing small-to-large scale projects, with respect to business impact, throughout the development life cycle. In this role, you can expect to leverage your 5+ years of Java engineering skills and knowledge to develop, test, and release features assigned to you and the Software Development team. You will be challenged daily to solve problems, expand your knowledge of the existing platform, and the technologies that can be used to continuously improve it.

Essential Functions

• Owns assigned projects throughout the development life cycle, from design through quality testing. Develops high quality code that delivers desired functionality using the technology selected for the project.
• Utilizes techniques including pair programming to ensure code quality. Additionally, maintains code quality through best practices, unit testing, and code quality automation.
• Supports continuous integration process.
• Collaborates closely with team members to determine best practices and client requirements for software.
• Develops intuitive software that meets and exceeds the needs of the company.
• Professionally maintains all software and provides regular updates that address client and/or company concerns.
• Analyzes and tests programs and products before formal launch. Addresses and troubleshoots coding problems quickly and efficiently to ensure a productive workplace.
• Ensures software security by developing programs to actively monitor the sharing of private information.
• Actively seeks ways to improve business software processes and interactions.
• When needed, provides valuable coaching and training for team members to ensure all employees are confident in the use of software applications.
• Regularly modifies software to fix errors, adapt to new hardware, improve overall performance, and/or upgrade interfaces.
• Directs system testing and validation procedures. Provides software programming and documentation development.
• Provides project proposals and project status updates to clients and departments, as needed. Prepares recommendations and project plans for the installation of new systems or modifications of an existing system.
• Works closely with clients and departments to resolve technical issues - including (but not limited to) software system design and maintenance.
• Regularly participates in an agile delivery process by helping size stories. Owns, researches, and recommends new solutions.

Skills and Abilities

• Excellent problem-solving skills and technical aptitude to solve complex issues.
• Proven ability to manage multiple high-priority projects.
• Excellent communication skills, both written and verbal.
• Ability to quickly adapt to a changing environment.
• Skilled in object-oriented (OO) design and design pattern.
• Skilled with Java 8 features, such as lambdas and streams.
• Demonstrated knowledge of API design standards, patterns, and best practices (especially Swagger and OpenAPI 3.0, REST, SOAP, MQ, JSON, Microservices etc.).
• Expert understanding of Spring Framework, Spring MVC REST, ORM/Hibernate and JDBC. As well as Hibernate/JPA and Object-relational mapping, including performance considerations.
• Experienced with RDBM systems: MYSQL Server, Oracle.
• Strong understanding of relational databases and writing SQL queries.
• Familiarity with the following front-end technologies: HTML, Javascript, CSS, Angular, Git, SQL, Maven

Experience

• Experience as a Java Developer, Java Engineer, or similar role required (i.e., Spring Framework / Spring boot and J2EE development required).
• Experience designing and developing REST API / web applications.
• Experience working with Agile methodologies (Scrum) and cross-functional teams (Product Owners, Scrum Masters, Developers, Designers, Business Analysts) a major plus.
• Advanced knowledge and experience in Cloud/SAAS integration, a plus.

Education

• Bachelor’s degree in computer science or a related field of study or equivalent level of education and experience.

• Java / Java Script code development using frameworks like Spring, Hibernate , Rest web services,  AWS services.
• · Dev-Ops activities using Maven, Eclipse and other tools
• · Contribute to providing estimates for implementation of new requirements and work diligently towards delivering within the estimates
• · Ensure Quality of the releases by adhering to SDLC best-practices such as, unit tests,continuous integration, system testing
• · Re-use code. Ensure delivered code is modular and extensible
• · Ensure adequate coverage of functional and non-functional requirements in test plans Position Requirements
• · 3-5+ years of hands on experience in Java/J2EE development. Experience with the implementation of a distributed, enterprise JAVA/J2EE solution is strongly preferred
• · Experience in JAVA/J2EE Frameworks such as Spring, hibernate is strongly preferred
• · Experience in SOA and SOA related technologies, solutions and products as well as experience with implementation of REST full web services is preferred
• · Experience with data modelling and experience with relational databases like MySQL, SQL Server or Oracle is desirable
• · Mobile application development experience on Android or iOS is desirable