Tech Lead

Experience: 5 TO 8

Location: MUMBAI

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. A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consulting. 

Required Skills:

• Exp. - 5 TO 8 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 multi-threading 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 Us:

At Wissen Technology, we deliver niche, custom-built products that solve complex business challenges across industries worldwide.

Founded in 2015, our core philosophy is built around a strong product engineering mindset—ensuring every solution is architected and delivered right the first time. Our commitment to excellence translates into delivering 2X impact compared to traditional service providers. How do we achieve this? Through a combination of deep domain knowledge, cutting-edge technology expertise, and a relentless focus on quality. 

We don’t just meet expectations—we exceed them by ensuring faster time-to-market, reduced rework, and greater alignment with client objectives. We have a proven track record of building mission-critical systems across industries, including financial services, healthcare, retail, manufacturing, and more. 

Wissen stands apart through its unique delivery models. Our outcome-based projects ensure predictable costs and timelines, while our agile pods provide clients the flexibility to adapt to their evolving business needs. Whether it’s AI/ML for unstructured data processing, cloud enablement, or data engineering, Wissen leverages its thought leadership and technology prowess to drive superior business outcomes. Our success is powered by top-tier talent. Our proprietary Interview Ninja platform ensures we hire the best, building high-performing teams that deliver unmatched results. 

Today, Wissen Technology has a global footprint with 2200+ employees across offices in the US, UK, UAE, India, and Australia. Our mission is clear: to be the partner of choice for building world-class custom products that deliver exceptional impact—the first time, every time.

Job Description:

• Experience in Core Java, Spring Boot.

• Experience in microservices.

• Extensive experience in developing enterprise-scale systems for global organization. Should possess good architectural knowledge and be aware of enterprise application design patterns.

• Should be able to analyze, design, develop and test complex, low-latency client-facing applications.

• Good development experience with RDBMS in SQL Server, Postgres, Oracle or DB2

• Good knowledge of multi-threading

• Basic working knowledge of Unix/Linux

• Excellent problem solving and coding skills in Java

• Strong interpersonal, communication and analytical skills.

• Should be able to express their design ideas and thoughts. 

Roles and Responsibilities:

1. Contribute in all phases of the development lifecycle
2. Write well designed, testable, efficient code
3. Ensure designs comply with specifications
4. Prepare and produce releases of software components
5. Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review
6. Ensure continual knowledge management
7. Adherence to the organizational guidelines and processes

Skills /Competencies: a. Bachelor/Master’s degree with good experience in computer programming b.4+ years working experience in application development using Java

Essential Skills:

1. Hands on experience in designing and developing applications using Java EE platforms
2. Object Oriented analysis and design using common design patterns.
3. Profound insight of Java and JEE internals (Data structure, Algorithm and time complexity, Memory Management, Transaction management etc)
4. Excellent knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate)
5. Experience in the Spring Framework
6. Experience in developing web applications using at least one popular web framework (JSF, Wicket, GWT, Spring MVC) and UI technology (Angular/React JS)
7. Ability to operate independently while establishing strong working relationships with co-workers and cross-functional teams
8. Strong organizational and prioritization skills
9. Demonstrate critical attention to detail and deadlines, and are self-motivated
10. Ability to adapt to changes in direction and priorities in a project and deadline-oriented environment
11. Strong written and verbal English communication skills
12. Problem-solving attitude

Preferred skills Good to have –

1. Knowledge in any UI technology (Angular, React, JS)
2. Intermediate level knowledge of Unix environment (User commands, not System Admin commands)
3. Understanding of capital markets and middle/back office processes in the financial services space

Required Skills:

• 3+ years of experience with development in JAVA technology.
• Strong Java Basics
• SpringBoot or Spring MVC
• Hands-on experience with Relational Databases (SQL query or Hibernate) + Mongo (JSON parsing)
• Proficient in REST API development
• Messaging Queue (RabitMQ or Kafka)
• Microservices
• Any Caching Mechanism
• Good at problem-solving

Good to Have Skills:

• 4+ years of experience in using Java/J2EE tech stacks
• Good understanding of data structures and algorithms.
• Excellent analytical and problem-solving skills.
• Ability to work in a fast-paced internet start-up environment.
• Experience in technical mentorship/coaching is highly desirable.
• Understanding of AI/ML algorithms is a plus.

• 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 presenting ideas and solutions effectively
• Prioritizing and managing workload and meeting critical project milestones and deadlines
• Effectively collaborating with a team as well as taking initiative and working independently to solve problems

Desired Candidate Profile

Essential Requirements:

• 5+ years of Software development experience
• Hands on development experience using Java technology stack with focus on architecture and design.
• Hands-on in Java Programming, J2EE, Spring or SpringBoot, Hibernate, RestAPI, Data Structures, Design Patterns, Oracle Database, PL/SQL
• Experience in application servers with prime focus on Tomcat.
• Experience in messaging systems such as RabbitMQ.
• Experience working in Linux/Unix environments. Must be hands on with Object Oriented concepts along with passion for design patterns and applicability.
• Relevant experience in Java frameworks like Spring Microservices, Spring-Boot, Hibernate, JPA etc.
• Understanding of developer testing practices and the differences between unit, functional, and system tests,
• Should have working experience in a CI/CD environment where build & test is automated.
• Should have working experience in tools like Maven, Jenkins, Bamboo etc.
• Should have used testing Frameworks such as JUnit, Selenium
• Ability to quickly learn and apply new concepts or principles
• Ability to work effectively as part of global team
• Experience working in an agile environment.
• Experience in Azure and AWS Development and Deployment, Active Directory, Containerization.