Senior Java Developer

Strong Senior Backend Engineer profiles

Mandatory (Experience 1) – Must have 5+ years of hands-on Backend Engineering experience building scalable, production-grade systems

Mandatory (Experience 2) – Must have strong backend development experience using one or more frameworks (FastAPI / Django (Python), Spring (Java), Express (Node.js).

Mandatory (Experience 3) – Must have deep understanding of relevant libraries, tools, and best practices within the chosen backend framework

Mandatory (Experience 4) – Must have strong experience with databases, including SQL and NoSQL, along with efficient data modeling and performance optimization

Mandatory (Experience 5) – Must have experience designing, building, and maintaining APIs, services, and backend systems, including system design and clean code practices

Mandatory (Domain) – Experience with financial systems, billing platforms, or fintech applications is highly preferred (fintech background is a strong plus)

Mandatory (Company) – Must have worked in product companies / startups, preferably Series A to Series D

Mandatory (Education) – Candidates from top engineering institutes (IITs, BITS, or equivalent Tier-1 colleges) are preferred

🧠 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.

Job Description:

You will be working with a team of highly-motivated, young & dynamic teams of engineers & reporting to the Engineering Lead.

• Be honest, reliable & consistent
• Write efficient & clean code
• Have a strong sense of ownership
• Be a part of development & maintenance of Pluang web app, Operations dashboard and other 3rd party products we own
• Contribute to improving the quality of engineering process & engineering culture

• Strong in data structure and algorithms
• Experience in Node.js, Express, API Design & DOM
• Understanding of component based design or other design patterns
• Experience with unit testing, integration testing & continuous integration
• RDBMS and NoSQL databases preferably PostgreSQL, MongoDB
• Good to have passion for investing

• Attractive compensation package - competitive salary, flexible bonus scheme.
• We are always looking for ways to promote and inspire innovation.
• Individual career path - management and technical career growth, enhanced by learning and development program, regular performance assessment, teams of multi-national IT professionals.
• Healthy work environment - company-sponsored medical program, food, and beverage program, open communication.
• Friendly policies to support Work-life balance, team building, and celebrations.

About PoshVine: 

PoshVine aspires to become the world's leading transaction-driven loyalty and engagement platform by providing a mutually beneficial ecosystem for people, banks and retailers. Our products around programmatic offers, rewards, and loyalty help retailers increase contextual engagement and financial institutions increase share of spends, while end-users maximize their rewards and savings. PoshVine works with all the global payment networks and many marquee financial institutions, including 7 of the top 10 banks in India. 

Backend Development at PoshVine:

We are building payment-linked real-time engagement tools embedded within banking and payment journeys. Our core engineering team strives to build solid backend foundations, infrastructure and a solid network of microservices. Apart from regular work, you can expect:

• Freedom to evaluate and introduce new tools, libraries and coding standards.
• Work on developer productivity and platform tooling.
• Evangelise tech and share knowledge in internal and external forums.
• Contribute to Product and Design ideas and implement them like it’s your own product. 

Roles & Responsibilities: 

1. Be involved in product and design decisions, and drive implementations. 
2. Help us scale the payment-linked loyalty infrastructure to every payment product used in India. Develop platform features for/with reusable code.
3. Work with IT/tech SPOCs from Banks and Fintechs to achieve seamless API integrations, resolve concerns, and move forward with program delivery and implementation. 
4. Tag team with internal and external stakeholders to problem solve and work with banks to test out UAT/Production and create a rollout plan for the same. 
5. Perform in-depth research and identify sources off production issues surrounding the application. 
6. Make architectural decisions (microservices, choice of development frameworks and tools, database optimisations, load handling)
7. Proficient in Full stack development skills spanning the entire spectrum from:

1. Database: MySQL, PostgreSQL
2. Backend: Ruby on Rails
3. Front End: Web Development frameworks  (Angular / React / Vue JS)
4. Deployment: Capistrano, Chef, AWS, EC2, Git

You’ll be a good fit if you possess: 

1. A strong product design sense.
2. Good experience in working with Ruby on Rails, Postgres, Python.
3. Proven ability to understand end user requirements, formulate use cases and come up with effective solutions.
4. Good understanding of REST APIs and the web in general.
5. Ability to build a feature from scratch & drive it to completion.
6. A willingness to learn new technology, whatever lets you deliver the best product.
7. Possess excellent data management skills: 
1. How to structure databases that can scale
2. How to optimise database queries
3. Complying with the latest regulations around data for each geography
4. Managing the infrastructure that the data resides on to ensure 99.9% uptime across geographies
8. You are comfortable working on CI/CD toolchain, Kubernetes, etc.
9. 3+ years of experience. 

Java Developer Job Description

We are looking for a Java developer responsible for building Java applications.

Responsibilities

• Design, build and maintain efficient, reusable, and reliable Java code
• Identify bottlenecks and bugs, and devise solutions to these problems
• Help maintain code quality, organization, and automatization.

Skill Set:

• Proficient in Java, with a good knowledge of its ecosystems
• Java, Rest API integration, JSON, XML, Oracle, Microservices, Agile Scrum.
• Experience in developing large-scale distributed systems.
• API knowledge
• Solid understanding of object-oriented programming
• Familiar with various design and architectural patterns
• Skill for writing reusable Java libraries
• Spring, Spring Boot, Spring Cloud, React native
• Experience: 04 to 10 years
• Salary: As Per Market

• 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 Description: 

We are looking for a Java developer responsible for developing Web applications using Core Java and JDBC. Your primary responsibility will be to quickly learn to design and develop applications, and to coordinate with the rest of the team working on different layers of the infrastructure. Thus, a commitment to collaborative problem solving, sophisticated design, and product quality is essential.

• Excellent knowledge of object-oriented programming.
• Well-versed in Core Java (1.7 and above preferable, with knowledge of new features like Executor framework, Generics, etc.).
• Excellent experience of collections, HashMap, concurrency packages, Exception Handling and Array List, sorting algorithm.
• Strong knowledge and understanding of real-time, low-latency multi-threaded server-side java code.
• Familiar with various design and architectural patterns.
• Skill for writing reusable Java libraries.
• Knack for writing clean, readable Java code.
• Experience with both external and embedded databases.
• Understanding fundamental design principles behind a scalable application.
• Basic understanding of the class loading mechanism in Java.
• Creating database schemas that represent and support business processes.
• Should possess good communication skills (both oral and written).
• Must be completely hands-on and an individual contributor and a self-starter.
• Must be able to complete assignments (suitable to his/her experience) with minimal assistance.
• Very good at Analytical and Logical skills.
• Solid understanding of the web development lifecycle.
• Ability to learn quickly and deliver software on time.

If you are looking forward for this opportunity, kindly apply with us with below asked details:

Total Experience:

CTC:

ECTC:

NP:

Current Location:

Hometown: