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Java Developer – Job Description
About the Role
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. This is a brilliant opportunity to become a part of a highly motivated and expert team that has made a mark as a high-end technical consulting organization.
Required Skills
- Experience: 4 to 7 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 multithreading 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.
Looking for candidates only with tier 1 colleges OR have experience in a product-based company.
Desired Skills :
● Experience with data modeling and SQL/NoSQL databases
● Experience with distributed systems and microservices
● Good experience in working with any of Java/SpringBoot, GoLang or NodeJS
● Excellent problem solving and debugging skills
● Passionate about the experience of software engineering as much as the output
● A strong sense of ownership
● Ability to communicate your ideas and approach to solving problems with clarity
Role Overview:
We are looking for a Lead Software Engineer with 7-10 years of experience to join our team in Bangalore. The ideal candidate should have strong expertise in financial services, databases, microservices. This role requires a mix of hands-on technical skills, leadership capabilities, and client engagement experience.
Looking for candidates from IIT/NIT/BITS/VIT
Investment Banking Domain Preferred
Key Responsibilities:
- Technical Leadership: Lead a team of developers, perform code reviews, and ensure high-quality software delivery.
- Microservices & Databases: Design, develop, and optimize microservices architecture with robust database integrations.
- Solution Delivery: Drive end-to-end software development, from design to deployment, ensuring on-time and high-quality project completion.
- Team Collaboration: Mentor junior engineers, provide technical guidance, and foster a culture of innovation and continuous improvement.
Required Skills & Experience:
- 7-10 years of experience in software development & leadership
- Expertise in financial services domain.
- Strong knowledge of databases (SQL, NoSQL) and microservices architecture
- Excellent client communication skills and ability to manage stakeholder expectations
- Hands-on experience in designing, building, and deploying scalable enterprise solutions
Why Join Wissen Technology?
- Work on cutting-edge projects for Fortune 500 financial institutions
- Be part of an innovation-driven team that values technical excellence and leadership
- Opportunity to work directly with business and technology leaders
- Competitive compensation and a dynamic work environment
Job Description
We are looking for a developer to help maintain the existing Java applications, and to guide development of the next generation tools. The right individual for this role must be capable of building applications in Java, using modern architectures. Should be hands on in Object Oriented Languages (Java, C# and Go), Cloud Based Technologies (AWS, DevOps and Serverless), Front End Frameworks (Angular, React JS, Spring Boot, Spring React, Node.js), Cutting Edge Data Tools (Python, Spark, Machine Learning) and Next Generation technologies (AI, Blockchain) etc. You should be comfortable with application coding based on design and specifications, and also be comfortable working with application protocols such as JSON RPC, SOAP, and REST. The candidate must be a top-notch Java developer committed to becoming an integral part of and fostering growth within our development team.
Primary Responsibilities:
- Working with the architects and development lead, documents and develops best practices for development, and deployment of applications, and works with members to foster growth within the team.
- Develop user interface components and implementing them following well-known React.js workflows (such as Flux or Redux)
- Predicts application development requirements based on changes in underlying architecture
- Either individually or leading a team of resources, determines hardware/software systems requirements and leads systems hardware/software design. Analyzes, designs, programs, debugs, supports, and modifies software enhancements and/or new products used in local, networked, or Internet-related computer programs.
- Partners with the IT Architect during the initial stages of the project/solution to ensure the accuracy of business cases and that the solution will meet the business need.
- Completes documentation and procedures for installation and maintenance. May interact with users to define system requirements and/or necessary modifications.
Qualifications
- 5+ years of Java development experience, ideally in a team lead role
- High level skills in Java, (preferably java 1.8 – knows to write lambda expression, understands functions etc), using the latest SDKs and tools and frameworks such as Spring boot, spring JDBC, Spring test, spring security, RxJava, etc of Java
- Experience interfacing with back-end applications using MQ, SOAP, RESTFUL services, and JSON. - Worked on at least one of JaxRs implementations.
- Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
- Thorough understanding of React.js and its core principles
- Understands database concepts – proficient in writing relational database queries – Oracle
- Ability to develop functional, technical and user interface designs for an application that meets the defined requirements (business, system performance and standards)
- Demonstrates deep expertise in specific coding concepts and/or languages, especially around modern application architectures.
- Experience with web applications that use responsive design to better support mobile browsers.
- Experience in highly-secured online environments that use n-tier designs and extensive fire walling to enhance security.
- Experience in multi data center physical implementation models for scalability and resilience.
- Experience partnering with others to solve problems quickly and efficiently.
Our client is the Health-tech initiative of India's largest business house. Started in 2015, it empowers healthcare providers and consumers in India. All healthcare monitoring services are made available through an app that will help connect doctors, hospitals, pharmacies, laboratories and consumers, enabling preventive and predictive healthcare. It helps the care-givers to track the entire patient journey from the initial appointment and maintaining their records, generating lab test reports to providing virtual consultation and home-care solutions. It is expected that this futuristic guide will strengthen doctor-patient relationship and enhance the in-clinic experience.
As the Java Developer, you will be responsible for developing cutting edge health-tech applications that include high scale transaction processing, intelligent bot based programs and data analytics.
What you will do:
- Building components for the company's advanced health tech platform using Java, Solr, SpringBoot, DialogFlow
- Communicating effectively in a cross-functional product development team and present ideas and solutions effectively
- Participating in technical planning and requirements gathering phases including design, code, test, troubleshoot, and document engineering software applications
- Developing the Code as per the requirements
- Working with product team and constructing the tech roadmap
- Designing, building and scaling the company's backend microservices
- Maintaining code integrity and organization
- Applying all quality requirements to make the code production ready
- Developing and deploying new features to facilitate related procedures and tools if necessary
- Developing documentation related to technical aspects and to facilitate current support, development, upgrades, or migrations
- Designing and building efficient, reusable, and reliable Java code
- Pro actively catching and fixing bugs, and providing support for the back end services
- Managing servers and infrastructure by keeping the lights on and refining the deployment architecture
What you need to have:
- Expert at hands on programming in JAVA and J2EE
- Must be from Product based companies (Should have developed Web Apps)
- Proven expertise in Java interfaces with MongoDB (or similar noSQL databases) as well as relational databases (mySQL, Postgres etc)
- Key contributor in atleast one 6+ months development project involving SpringBoot and Hibernate
- Strong understanding of application server infrastructure
- Good working knowledge of Maven based build systems
- Good understanding of build and deployment pipelines that involve ANT and Jenkins
- Proficient understanding of code versioning tools, such as Git or SVN
- Good knowledge of working on Rest APIs , Webservices
- Excellent problem-solving skills
- Hands on experience with Lucene/Solr
- Familiarity with DiagFlow based chat bot building
- Knowledge of NLP
- Learnt AI/ML systems
- Excellent interpersonal skills and the ability to build good working relationships.
- Must be self-motivated to prioritize and manage workload and meet critical project milestones and deadlines.
- Able to effectively collaborate with a team as well as take initiative and work independently to solve problems
● Excellent understanding of OO / Functional programming concepts.
● Strong expertise in design patterns and coding best practices.
● Experience in designing and building end to end distributed highly available N-tier web
high-traffic, scalable and high performance enterprise applications.
● A strong knowledge of Big data technologies like Hadoop , Spark, Kafka, distributed frameworks,
NoSQL databases would be great, if not, one should have a strong desire to learn.
● Experience in RESTful web service patterns, microservice architecture and containers.
Our client was founded in 1999 by Mr. D.N. Prahlad (an early employee of Infosys), to create software products. Headquartered in Bangalore, we also have offices in the USA and France.
What We're Looking For
• An unwavering attention to detail and care towards your work. We double-check PRs they submit for review. Each variable name is thought through in detail; attention is paid to how decisions made today will affect the future.
• An absolute commitment towards doing the best work of your life, while helping others to do the same. We deliver with utmost focus on the job at hand. The team works towards crafting the best products for our users, and customers. Working as a team, we take on problems out of the original scope of their work if this results in a better end product.
• You should be comfortable working in an agile environment. You are also expected to
participate in code reviews—both receiving and offering them as needed. You are needed to communicate flexibly with your team—pitching in on designs, features, and ideas for the product, wherever needed.
What is Needed for the Role
• Strong command of Java & the JVM ecosystem
• Strong command of relational databases such as PostgreSQL, Microsoft SQL Server, Oracle, etc. (both with & without ORMs)
• Strong command of HTTP
• Strong command of HTML, CSS, and JavaScript
• Extensive experience with at least one JVM based web framework (SpringBoot, Micronaut, Play, Dropwizard, etc.)
• Experience with concurrency & parallelism on the JVM
• Experience with Docker, and cloud-native concepts
• Experience with Gradle
• A good grip on Git
What You Will Work On
The specific project you work on is decided based on the list of available projects at the time. While what you work on will change over time, we assure you that you’ll work with people who care deeply about their work and deliver with great attention to detail.
Your Growth
Our growth is driven by ordinary people who have extraordinary dreams and are bold enough to pursue them. Our leadership team, including our Managing Director, is comprised primarily of people who joined us as freshers. Through our process of continuous feedback, and regular 1-1 conversation, we believe in upskilling our team, and enabling each of them to grow along paths they find satisfying.
Your Level of Experience
We do not evaluate people based on the number of years of experience they have.
Instead, we look for skills that have been gained, regardless of how long they’ve, it has taken a person to gain those skills.
However, as a point of reference, historically, we have successfully recruited candidates for this role with 1-5 years of prior experience.
Evaluation Process
The evaluation process starts with a short phone conversation.
After that, the candidate will be required to take both a technical and writing test, which will be shared with them after the phone screen.
This will be followed by 1-3 interviews, over Google Meet. We will require candidates to be alone, in a quiet place (with no background noise). They must also have a fast & reliable internet connection. They will be required to take the call on a laptop with a camera, and have their technical test code ready for perusal. We recommend using Google Chrome to join the call, and strongly urge candidates to use headphones/earphones.
Please note that the evaluation process may take up to 6 hours
- Well versed in Core Java, OOPs concepts, collections, multi-threading, concurrency, lambdas, and streams.
- Hands-on knowledge of Spring Core, MVC, JPA, Security, transaction
- Working knowledge of REST API designing as well as development, using Spring.
- Exposure to Spring Boot, Docker, Kubernetes, OpenShift for the microservices environment.
- Savvy with SQL and database concepts.
- Ability to use frameworks like JUnit, Mockito, etc., for implementing unit testing.
- Sound understanding of code versioning tools, such as Git/bit bucket with Maven.
- Should have worked in a CI/CD environment with TeamCity/Jenkins.
Job Summary:
- Willingness to work on highly scalable cloud-native solutions based on microservices.
- Quickly learn the technologies and deliver using the same.
- Take complete ownership of the customer requirements.
- Motivated to deliver world-class quality.
- Inclined to bring new ways of thinking, working and providing solutions.
- Drive the concept of quality into everybody and have a zero-tolerance towards bad quality.
- Understand requirements from product management, customer and able to comprehensively break this down to manageable tasks.
Experience:
● 3-9 years of development experience.
Technical Skills:
Mandatory:
- Java - Advanced concepts concurrency, reflection, lambda, Java Springboot, Spring security,
- Actuator/Prometheus/Grafana/Servo (metrics),
- EFK/ELK stack (log analysis)
- OpenAPI/Swagger (documentation)
- RDBMS (PostgreSQL, MySQL, Maria or any other)
- NoSQL (Anyone of Mongo DB, Redis, Cassandra, Neo4J or other DBs)
- Automated unit tests/e2e tests (JUnit, TestNG, RestAssured etc)
- CI/CD pipelines (Jenkins, Sonar, Maven/Gradle etc)
Optional: (But highly recommended)
- NewSQL DB (TiDB, CockroachDB)
- AMQP/RabbitMQ
- Kafka
- Docker
- Kubernetes










