Lead Java Developer – Backend

🧠 Job Description: Senior Java Developer (8+ Years Experience)

Location: Mumbai, India

Employment Type: Full-time, Hybrid mode of working

Company: Wissen Technology

Website: www.wissen.com

🚀 About Wissen Technology

Wissen Technology is a specialized technology consulting firm delivering cutting-edge solutions to global leaders in Banking & Finance, Telecom, and Healthcare. Established in 2015 and part of the Wissen Group (founded in 2000), Wissen has scaled rapidly with impressive impact and recognition.

• 🌍 Offices in US, UK, India, Australia, Mexico, and Canada
• 👥 1700+ Wissen Technology professionals; part of a 4500-strong Wissen Group
• 🏆 Great Place to Work® Certified
• 🧠 Featured as a Top 20 AI/ML Vendor (CIO Insider, 2020)
• 📈 Achieved 400% revenue growth in 5 years (with zero external funding)
• 💼 Delivered $1B+ worth of projects to 50+ Fortune 500 companies

Learn more about our work and thought leadership:

📄 Articles by Wissen | 💼 LinkedIn

About the Role

We are seeking an experienced Senior Java Developer with 8+ years of hands-on expertise in building scalable, high-performance applications. The ideal candidate will have strong fundamentals in Java, OOPS, Multithreading, Spring concepts, and SQL, and will play a key role in designing, developing, and optimizing enterprise-grade solutions.

Key Responsibilities

• Design, develop, and maintain complex applications using Core Java and Spring frameworks
• Apply advanced Object-Oriented Programming (OOPS) principles to deliver clean, modular, and reusable code
• Implement and optimize multithreaded applications for high-performance systems
• Work with SQL databases for efficient data modeling, query optimization, and integration
• Collaborate with cross-functional teams to gather requirements and translate them into technical solutions
• Conduct code reviews, troubleshoot issues, and ensure adherence to best practices
• Mentor junior developers and contribute to technical knowledge sharing within the team
• Ensure application scalability, performance tuning, and security compliance

Required Skills & Qualifications

• Bachelor’s/Master’s degree in Computer Science, Engineering, or related field
• 8+ years of professional experience in Java development
• Strong expertise in Core Java, OOPS, and Multithreading
• Hands-on experience with Spring concepts (Spring Core, Spring MVC, Spring Boot preferred)
• Proficiency in SQL and database design (MySQL, Oracle, PostgreSQL, etc.)
• Solid understanding of software development life cycle (SDLC) and Agile methodologies
• Strong analytical, problem-solving, and communication skills

🌟 Why Wissen?

Join a company that combines start-up agility with enterprise stability. Work alongside some of the brightest minds from institutions like MIT, Wharton, IITs, IIMs, and NITs. Be part of mission-critical projects for Fortune 500 giants, and grow in a culture that invests in your future.

Java JD

Exp: -2- 4 Years

Location: - Manyata Tech Park, Bangalore, Karnataka, India

Immediate Joiners-15 Days

Job Responsibilities

• Strong experience with Spring and Spring Boot, Spring MVC, Spring Data, Spring Security
• • Exposure working in microservices and containerization(Docker/Kubernetes)
• • Experience with Web Services (JSON, REST, JAX-RS, Spring based REST services)
• • Strong with Java and J2EE/Java EE (including servlets, JSP, JSF, JDBC)
• • Strong understanding of Java Multithreading
• • Experience working with DB like Mongo, Casandra etc.
• • Experience with at least one of the development tools like Git, Gradle, Maven, Sonar, Jenkins, Artifactory etc
• • Experience with web application servers like Tomcat, Jetty, JBoss etc
• • Experience with TDD, code testability standards, JUnit/Mockito
• • Experience with DevOps practices and CICD model of development
• • Good understanding of OOP, design patterns and industry best practices
• • Agile project experience along with working on Agile tools like JIRA
• • Strong written and verbal communication skills
• Good to have Skills:
• • Strong interpersonal skills and time management skills
• • Strong analytical and troubleshooting skills

Job Title: Java Lead – Software Engineering

Location: Mohali | Panchkula | Gurugram (Onsite)

Experience: 7+ Years

About the Role:

We are seeking a highly skilled and passionate Java Lead who will be responsible for designing, developing, and leading the implementation of scalable and maintainable product features. As a Lead, you will play a key role in guiding a team, ensuring coding best practices, and resolving complex technical challenges. This is a great opportunity for someone who thrives in a fast-paced environment, is passionate about solving technical problems, and is excited about leading product development end-to-end.

Key Responsibilities:

· Lead a team of developers in designing and building micro-services using Java.

· Decompose feature requests into sizable and estimable pieces of work.

· Deliver scalable, maintainable, and high-quality code within defined timelines.

· Conduct code reviews to ensure adherence to coding standards and best practices.

· Collaborate with cross-functional teams to solve complex technical challenges.

· Act as a subject matter expert for specific product components.

· Debug and resolve critical production issues with detailed root cause analysis.

· Drive adoption of Agile practices, ensuring proper planning, estimation, and delivery.

Required Qualifications:

· Bachelor’s degree in Computer Science or a related field.

· 7+ years of strong experience in Java development.

· 3+ years of hands-on experience in developing and delivering productized software applications.

· Experience in leading teams and mentoring developers.

· Proven ability to design and deliver scalable and maintainable applications.

· Strong problem-solving and analytical skills with a self-driven mindset.

· Excellent written and verbal communication skills.

Preferred Skills:

· Hands-on experience with Java micro-services.

· Familiarity with CI/CD pipelines.

· Strong understanding of Agile methodologies.

· Cloud and containerization exposure with AWS and Docker.

Technology Stack:

· Java

· Micro-services

· SQL

· AWS

· Docker

About the Company:

We are a Series A funded Indonesian online group buying platform that helps people connect with like minded people who want to buy the same item/product at a discounted price.  The team is spread across India and Indonesia, and is led by experienced founders who have founded, set-up, scaled and exited businesses across India and Indonesia. We have raised our first round of funding, and are growing extremely fast. We are actively looking for Full Stack developers to join our team.

We are looking for an experienced full-stack engineer to implement both back-end and front-end software solutions to serve both internal and external customers. The position entails working in an agile team to develop Java- and React-based projects that support our system.

• Design, implement and test full-stack solutions using Java, Spring and React
• Design robust spring system that can support 2-5mil users.

• Work alongside other team members to integrate various components into finished product
• Work closely with product owner to create stories
• Continuously create new and interactive features that would help to improve user experience and user engagement.
• Assist with troubleshooting of issues as needed
• Participate in the design and architecture of software solutions
• Assist in developing and maintaining continuous integration pipelines

Salary range : 15 lpa - 30 lpa or more depending on candidate experience.

Skills required : 

You will be best qualified if you have experience with several (not all) of the following:

• JAVA
• Python (Flask and Django)
• Spring/Spring Boot
• React
• Hibernate
• Linux
• REST
• Kafka
• Mysql
• AWS
• ELK Stack (Elasticsearch)
• CI/CD Pipelines

Qualifications:

• 2+ years of experience in Java based technologies
• 1+ years of experience in Python
• Experience in designing databases and system architecture 
• 1+ years of experience in Front end technologies like HTML, CSS, JavaScript and ReactJs

Why join us?

• You will get to work with an experienced team who has worked in multiple startups. 
• Experimenting is the name of the game. And POCs are the snacks that fuel them.
• Grow with us. It is a family
• Gain exposure to two of the fastest growing markets in the world - South East Asia and Social Commerce

Vah Vah! is an ed-tech company that offers online makeup courses in micro-batches to students across India to learn from the leading teachers in top cities. We provide holistic education with lots of practical training that makes our students job-ready with not just the base skills but also the soft skills for great customer service. Our teachers have more than 15+ years of experience in training makeup and have certified more than 1000+ students. Vah Vah! is founded by executives with extensive experience running consumer business and mobile games at scale (over 100 million players) at Zynga. Vah Vah! is backed by a leading investment firm.

Website Link: https://vahvah.com/

The Mission

Vah Vah teaches professional makeup to budding makeup artists and influencers through live online classes. We have students from Srinagar, all the way to the Andamans. And experienced teachers who have worked in Bridal Makeup, Ramp Shoots, Film and more. We empower our students to join the workforce as fully trained makeup artists. This is the future of vocational education, and you can help build it.

Our Culture

• Amazing workplace and colleagues to work with
• We have the right mixture of creativity, analytics and hustle to move fast in the right direction.
• You will work with colleagues who don’t take themselves too seriously but move mountains.
• See yourself evolving every month with new problems to solve and new skill to master.
• Work with the smartest engineers so you can learn from them.
• Competitive salary at par with the best in the industry
• Great stock options so you can benefit from the company's growth.
• Immense exposure to new technologies

Responsibilities:

• Compile and analyze data, processes, and codes to troubleshoot problems and identify areas for improvement.
• Collaborating with the front-end developers and other team members to establish objectives and design more functional, cohesive codes to enhance the user experience.
• Participating in continuing education and training to remain current on best practices, learn new programming languages, and better assist other team members. Taking lead on projects, as needed.

Requirements:

• Overall experience of 2-5 years in building backend services using languages like NodeJs, Java etc
• Fluency or understanding of specific languages, such as Java, Node.Js, Python, and operating systems may be required.
• Strong understanding of the web development cycle and programming techniques and tools.
• Focus on efficiency, user experience, and process improvement.
• Strong problem solving and verbal and written communication skills.
• Ability to work independently or with a group.
• Sound knowledge on source control and DevOps

What you get:

• Amazing workplace and colleagues to work with
• Competitive salary at par with the best in the industry
• Immense exposure to new technologies

About us:-

Zupee is India's hottest Real Money Gaming Platform

With in 1 yr of start, we just had an initial team of around 30 people, these 30 were successful to bring 10 Million+ users and an overall consumer spend of 1.5 Billion USD on the platform, the journey which needed years to be covered was covered with in 1yr. As we speak today, Zupee has been profitable for almost an year now and has ended the year 2020 with a team size of 70+ and over all growth rate was mapped around 20X.

Our user base has significantly gone up and we have invested highly in technology and have got best in class tech stack, it's time to add the backend developers who can help us scale up the platform so that we can drive profitable growth and become the market leader in our space.

Backend Developer :- (3 - 12 yrs)

What You'll Need?

• Knowledge of languages (JavaScript, Python) and frameworks/systems (nodejs)
• Strong analytical skills and aptitude
• Understanding of data architecture, software design and best coding practices
• Understanding of TCP/IP networking concepts and technologies
• Ability to learn new languages and technologies
• Experience with databases (both SQL and NoSQL)
• Familiarity with Agile development methodologies
• Working knowledge of Linux

We are hiring for a Software Engineer Team Lead - Backend, to join our education-focused fintech lending startup, GrayQuest. Our core product is a combination of a lending product, a rewards product and an insurance product to redefine the education fees payment across the country.

• Participate in all stages of the Software Development Lifecycle
• Develop back-end components, services, and APIs. Support integration of user-facing elements, and collaborate closely with the design and front-end development team.
• Write elegant, effective, and scalable code while maintaining the highest level of coding standards.
• Take complete ownership of projects and ensure timely deliveries
• Ability to debug, refine, review, and deploy code
• Work closely with the QA team to test, and document project features.
• Ability to interact with all stakeholders. Understand business requirements, and effectively convert them into technical specifications
• Mentor junior developers and participate in peer Review

Requirements:

• Demonstrable experience as a Python Developer (3+ years)
• Strong knowledge of Python frameworks (Django Rest, Flask)
• Experience working on REST APIs
• Strong knowledge of SQL and JavaScript
• Experience with Amazon Web Services (AWS)
• Working knowledge of React
• Familiarity with Agile development methodology
• Good understanding of task breakup, milestone definition, and work delegation.
• Past experience of working in a fintech/financial services domain or a consumer internet startup will be preferable but not required
• Work experience in early-stage startups (0 ->1) is a big plus
• Bachelors or equivalent degree from premier institutes is a plus
• Most importantly, the biggest skill we look for our prospective candidates is "Learnability" - how quickly can you learn. 

Why is this a great opportunity for the right candidate:

1. Work with a young dynamic core team backed by marquee investors from the financial services space
2. Work on a product/business that has achieved product market fit and take it to scale
3. Equity compensation and competitive market salaries
4. Work environment that prioritizes talent, hustle and dedication
   
   

We will also ensure we give a preference to applicants who directly email us with their background/context and why they think they should be a strong candidate for this position at GrayQuest. Email us at work (at the rate) grayquest (dot) com and cc Sonal (at the rate)grayquest (dot) com

Rejolut is one of the award-winning fastest-growing emerging tech company which is working on leading technology like Blockchian, ML & AI, Complex mobile & web apps, IoT etc.

The ideal candidate will be responsible for developing a highly scalable and secure code.

Responsibilities:-
-Able to take the Extreme Ownership of modules/product/projects
-Able to learn & implement new technology/framework/library at God Speed
-Able to come with an optimal solution for the business problem
-Can handle calls with the client & customer to know their feedback
-Writing clean code & able to dig into other's code or open-source code
-Build pixel-perfect, buttery smooth UIs across both mobile platforms.

- Maintain product roadmap, release schedules, and architectural standards that ensure alignment with business objectives.

Desired Candidate Profile:-

- Represent the technological agenda in staff meetings and when making hiring decisions
- Flexible to adapting & introducing new and latest technologies to the organization
- Maintain current knowledge of technology landscape and developments
- Innovation & Optimizing R&D.
- Defining the software technology strategy, architecture, and road-map.
- Would love to do more coding yourself, but accept that you can bring the most value by helping others to excel.
- Should have built large scale applications with modern web frameworks & technologies
-Should be a fast thinker, hands-on manager, and strong communicator and think and act like an entrepreneur
-Consolidate our technology platforms and create plans for each Track, analyze and monitor technology performance metrics
-Take the initiative in thought leadership, innovation, and creativity
-Spearhead IT projects to increase our market reach and improve our USP
-Oversee all system design and changes in system architecture
-Technical knowledge (NOT All but would be happy to take someone with max. Skills knowledge)
-Fullstack (Web), Python, Machine Learning, BlockChain, RoR, ReactJS, NodeJS, mean stack, MernStack, Front End, Mobility, ReactNative, React JS, Javascript, etc

Culture

- Fast-paced, intellectually stimulating, steep learning, and growth

- Close-knit, hardworking, supportive colleagues

- Challenging work

- Flat organization with no hierarchy

- If you like problem-solving, and love the latest technology, there are very few better places

How we are different 
 -We are a young and dynamic team who are obsessed with solving the business problem at scale -We are a technology agnostic company who focus more on finding the optimal solution to the business problem rather than technology

 Why to join us
 -We provide a huge learning curve. Spending 1.5-2 years with us will put you 3 years ahead in the career
-We work only on cutting edge technology like React, React Native, Flutter, NodeJS, Python, Go, Svelte, ELM
-There are two technology Co-founder in the company who are pretty much hands-on and have earlier bult the Consumer application which is downloaded millions of time and are in leadership position in copanies like Samsung, Purplle, Loylty Rewardz
-Get mentored by the best in the industry
-Flexible working hours
-Perks best in the industry

It is India’s only B2B Construction Materials Supply Chain Company. Construction & Infrastructure is  one of the industries, with the most complex problems in Supply Chain and we are fundamentally reengineering the  way construction materials get procured. Our Clients include the biggest names in India & the World– The  LafargeHolcim Group, JSW Group, The Tatas and many others. We are backed by some of the world’s top marquee  funds in our journey to create transparency and standardization to an otherwise opaque industry. 

Your responsibilities: 

• Understand the business context and build high quality code using proven design patterns Develop, test and deploy integrations required to meet business requirements 
• Carry out unit tests and other quality control mechanisms to inform and validate the code and design 
• Utilizing and monitoring cloud infrastructure resources (such as AWS, Azure) efficiently 
• Participate in a highly fluid environment applying agile software development principles 
• Ensure the coding standards are on-par with the best in the industry 

Educational Qualifications: 

• Bachelor's or Master’s degree in a quantitative field (e.g. Mathematics, Engineering, Computer Science).  

Must have skills: 

• 3+ years of work experience with mobile/web development 
• Experience in working with either of languages: Go, Java, Scala 
• Strong understanding of relational and non-relational databases (MySQL, PostgreSQL, MongoDB, Cassandra) 
• Strong understanding of Message brokers 
• Must have hands on experience in Restful APIs 
• Must have a strong foundation of Data structures and Algorithms 
• Using logic and reasoning to identify the strengths and weaknesses of alternative solutions, conclusions or approaches to problems 
• Ability to deploy features on a daily basis: should be good at time management and prioritization 
• Hands-on experience in CI/CD principles and TDD 
• Strong written and verbal English communication skills 

Good to have skills: 

• Experience in event-driven & asynchronous I/O frameworks 
• Exposure to business process and workflow automation 
• Working experience in process driven and data intensive business applications 
• Experience in working on web infrastructure with React.js and React Native 

Professional traits: 

• Self-motivated, persistent and “Never Give Up” attitude 
• Passion for innovation and adaptability to a lean startup culture 
• Ability to work with minimal supervision, independently and / or as a member of a team 
• Giving full attention to what other people are saying, taking time to understand the points being made,  asking questions as appropriate