
Job Title: Java Developer
Location: Chennai
Experience: 3+ Years
Employment Type: Full-time
Job Description:
We are looking for a skilled and passionate Java Developer with a strong foundation in Core Java and Object-Oriented Programming concepts. The ideal candidate should possess excellent communication skills and have hands-on experience with multi-threading, collections, databases, and backend development frameworks like Spring and Spring Boot. Exposure to cloud platforms and frontend technologies is a plus.
Key Responsibilities:
- Design, develop, and maintain scalable Java applications using Core Java and Spring Boot.
- Apply strong knowledge of Java Collections Framework and concurrent programming techniques including ExecutorService, ForkJoinPool, and other threading mechanisms.
- Optimize JVM performance and memory usage.
- Participate in all phases of the software development lifecycle: requirement gathering, design, development, testing, and deployment.
- Write clean, maintainable code following best practices, coding standards, and design patterns.
- Conduct code reviews, unit testing, and participate in peer programming.
- Collaborate effectively with team members and stakeholders to deliver high-quality solutions.
- Interact with databases like Oracle, Sybase, or SQL Server, with a strong understanding of views, triggers, indexing, and stored procedures.
Must-Have Skills:
- 3+ years of hands-on experience in Core Java
- Strong understanding of Collections, Multithreading, and Concurrency
- Proficient in Spring Framework, especially Spring Boot
- Deep understanding of Object-Oriented Design and Data Structures
- Strong experience in RDBMS (Sybase/Oracle/SQL Server) including indexing, replication, CLOB/BLOB types, views, and procedures
- Excellent written and verbal communication skills
Good to Have:
- Exposure to Microservices architecture
- Familiarity with NoSQL databases
- Knowledge or willingness to work on frontend technologies
- Experience working with public cloud platforms (AWS, Azure, GCP)
Soft Skills:
- Strong analytical and problem-solving skills
- Team player with a proactive attitude
- Ability to work independently and in a fast-paced environment
If you are passionate about Java development and want to work on cutting-edge technologies in a collaborative environment, we would love to hear from you.
Let me know if you want this converted into a company-branded format or with CTC/NP details added.

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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We are looking forward to hiring a committed
Java Developer with experience in building high-performing, scalable, enterprise-grade applications. You will be part of our Engineering team that works on mission-critical applications. You will be managing Java/Java EE application development while providing expertise in the full software development lifecycle, from concept and design to testing.
Location = Pune
You are required to:
Contributing in all phases of the development lifecycle.
Write well designed, testable & efficient code.
Ensure designs comply with specifications.
Prepare and produce releases of software components.
Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review.
Our Current Stack
Backend: Spring (JAVA), Laravel (PHP), MySQL, NoSQL, NGINX Plus.
Frontend: Angular 5+ Ngrx/store 5
Infrastructure: Google cloud platform (App engine, CloudSQL, BigQuery, PubSub, Firebase Hosting), Scrapy Cloud, Pusher.io (websockets), Getstream.io, Filestack, Postmark app, AS2 Gateway, Google Cloud Endpoints Framework, MongoDB, Algolia, Memcache
Tools: Gitlab, Postman app, JIRA.
Technical Skills required
JAVA, SPRING OR SPRING BOOT, DATA STRUCTURES & ALGORITHMS, HIBERNATE, MYSQL, MONGODB and NOSQL
What Makes You Eligible?
LOOKING FOR CANDIDATES FROM PUNE LOCATION ONLY.
B. Tech degree ONLY ( FIRST CLASS GRADE IN FINAL YEAR 60 % OR ABOVE ONLY).
Experience in the same role of almost 1-2 years.
Experience with connecting backend and frontend services.
Exposure to consuming data through different interfaces (Web API's/Socket/ REST/ RESTFUL/ JSON/ XML).
Proficiency in Data Structures and Algorithms.
Understanding of web markup, including HTML 5 CSS.
Understanding of client-side scripting and JavaScript frameworks.
Ability to write clean, reusable and well documented code.
Proficient understanding of code versioning tools, such as Git.
Knowledge of API authentication techniques (Token, JWT, OAuth2) - desirable but not mandatory. (Experience with API Design will be a plus)
Fair spoken and written English Flexibility - Things change around here. FAST!
Other Inter-personal skills like self-motivation, persistency, patience and eagerness to learn and work independently.
Java, Java8, Springboot, Microservices, core java, j2ee, JAVA, Springboot
backend, core java, java8, micro services
Skills Required:
- Must-Have: Java, Spring/spring-boot, Data structure, Algorithm
- Any 2 (Must) out of the below-mentioned list :
a. JPA/Hibernate
b. Messaging queue/Kafka/SQS/distributed message/SNS/JMS
c. NoSQL/Aerospike/Reddis/Cassandra
d. Microservices
Roles and Responsibilities:
- Technical design, implementation, deployment, and support.
- Partner with Business Analysts to review and implement business requirements.
- Perform development and unit testing, working closely with Business.
- Mentors and oversees the development of resources, including reviewing designs and performing code reviews.
- Ensure designs are in compliance with specifications
- Contribute to all phases of the development lifecycle
- Developing high-volume, low-latency applications for mission-critical systems and delivering high availability and performance
- Should have experience of working on Core Java/J2EE & OOPS concept
- Should be well versed with Spring/Struts & Apache Camel (OSGI Framework)
- Should have a good understanding of Hibernate and Other ORMs
- Should have an understanding of working on Web Service (SOAP/REST) and Maven
- Build tools such as Jenkins
- Caching Technique(Radis, Hazlecast, Aerospike)
- Database Knowledge - Oracle, MySQL
- Experience in Java and associated technologies Core Java, JSP, Spring, Struts,RESTful Services,SOAP,Tomcat, Hibernate, Maven
- Strong understanding of OOPS concepts
- Proficient understanding of RDBMS Concepts
- Strong understanding of Databases Oracle / MSQL / MySQL etc and PL/SQL Programming
Responsibilities :
- Developer responsibilities include, but are not limited to the following:
- Experience as a Sun Certified Java Developer with proven hands-on Software Development experience. We use Java 8
- 4-10 years java development experience with JSE/JEE, Java-based Micro-services framework, and implementation, Spring framework, Hibernate framework, SQL, etc
- Hands-on experience on Spring boot & SPARK Microservices and OSGi specifications
- Strong knowledge of micro-service logging, monitoring, debugging, and testing
- Implementations experience of micro-service integration, packaging, building automation, and deployment
- At least two years experience in SOA & Microservices based process applications using BPM (Activiti/JBPM/Camunda)
- Object-Oriented Analysis and design using common design patterns.
- Insight of Java and JEE internals (Classloading, Memory Management, Transaction management, etc)
- Excellent knowledge of Relational Databases, SQL, and ORM technologies (JPA2, Hibernate)
- Experience in developing web applications using at least one popular web framework (JSF, Wicket, GWT, Spring MVC, Spring Boot)
Qualifications: BS/MS degree in Computer Science, Engineering or a related subject and a minimum of 8 years of professional work experience in a mid-d or large corporate Information Technology environment. Highly organized and detail-oriented, with the ability to keep multiple projects and client engagements active at once. Comfort with ambiguity and ability to navigate uncertainty.

Read more about us here: [https://angel.co/company/fireflies](https://angel.co/company/fireflies) and here: [https://yourstory.com/2019/10/funding-startup-fireflies-enterprise-assistant-canaan-partners](https://yourstory.com/2019/10/funding-startup-fireflies-enterprise-assistant-canaan-partners)
We value your skills and abilities more than your resume.
Here's what we look for :
- You have raw intellectual horsepower and ability to learn quickly
- You have a strong background in computer science / math
- You contribute to open source (share your GitHub- More than 1000 commits in past year)
- You have experience working on apps that have supported 10,000+ concurrent users
- You understand sound architecture principals
- You can design and build scalable infrastructure
- You should be a great communicator and culture maintainer:
- We value over-communication and candid feedback and want to build a no-bs, results driven culture
Values that are important to us :
- You're data driven and customer focused
- You value fast & incremental engineering cycles
- You maintain design excellence and minimise complexity
- You measure your results & automate when possible
- You get 10% better at something every week
- You have an internal compass and take accountability & initiative
You'll be working with :
- Node.js, MongoDB
- Redis, RabbitMQ, Elasticsearch
- AWS, Docker, Terraform
- React, Keras, Tensorflow
About us :
- Fireflies.ai is an AI that joins meetings and takes notes automatically. [Product demo](https://app.fireflies.ai/view/ogM9zmKij2). We integrate with the leading platforms: Zoom, Google Meet, Microsoft Teams, Webex, Slack, Salesforce, & more https://fireflies.ai/integrations)).
- We are a US-based, AI company that is building a 100% remote team. Today we have over 40 employees in 5 countries around the world. Our engineering team is 20+ senior engineers. We were [featured on Forbes for Gartner's top 25 enterprise software startups to watch in 2020](https://www.forbes.com/sites/louiscolumbus/2020/07/05/gartners-top-25-enterprise-software-startups-to-watch-in-2020/). We skyrocketed from a few thousand users to almost 100,000 users in 2020.
[Fireflies.ai](http://fireflies.ai) has raised $5 million from top-tier investors including Canaan and angels from Slack, Dropbox, Amazon and Salesforce.
- You'll be working with Sam Udotong, CTO @ Fireflies.ai. Sam graduated from MIT in 2016 where he studied computer science and aerospace engineering. He and his co-founder Krish were [featured as the cover of Entrepreneur magazine in Sept 2020]
- He's been a [speaker at the MIT AI Conference 2020](https://www.youtube.com/watch?v=ywhY2DCIZqU) alongside industry leaders like Richard Socher and Sal Khan. He's guest lectured at Stanford for their intro to AI class. Sam is scrappy & committed - he and Krish bootstrapped the company for 3 years, eating Soylent and Domino's pizza almost every day. [Being Scrappy as an Entrepreneur (Product Demo)](https://app.fireflies.ai/view/vWQjdABHqU). He rejected Harvard Business School to build Fireflies. Sam's goal is to build a multi-regional, boundary-less engineering team that has A+ productivity & communication such that when you go to sleep, you can hand off work and when you wake up, work has already moved forward. If we do these first principles well, we can theoretically build the best engineering organisation in the world.
- We want to transform how people communicate and work. Come work with us if you share the below values and want to work on hard engineering challenges that will actually make a difference in the lives of people.
- We are an equal opportunity employer and strongly value diversity at our company, because our team will be stronger with different perspectives and experiences. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.



Candidate must have experience with start up product based companies.
Opportunity is with the client from E Mobility domain.




