Java Developer

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.

Responsibilities

Build distributed, highly available, and fault-tolerant applications using Java, Spring, Kafka, and other technologies

Build large-scale and highly available APIs, both internal and external

Build, deploy, release, and support applications in the early stages

Skills

Must have

Overall 10+ years of experience as a Java Developer

Core Java 10+ years

Good hands-on coding skills

Must have experience in investment banking-related projects

Should have working experience in Trading life cycle project

Spring framework 5+ years

Kafka or other messaging

Knowledge of key APIs: JPA, JTA, CDI, etc.

Knowledge of various design and architectural patterns

Understanding of microservices architecture

Containerization solutions (e.g. Docker, Kubernetes, OpenShift)

Building tools (e.g. Maven, Gradle)

Version Control (e.g. Git)

Continuous Integration systems (e.g. TeamCity, Jenkins)

Experience in the finance industry and work with the Fintech community

• Bachelor's degree in Computer Science or a related field with 2-5 years hands-on experience with Java based open source tech stack
• Expertise in Core Java, Data Structures, J2EE with proven expertise in Spring MVC, Spring boot, Microservices architecture, Web Services (Rest) in distributed systems
• Practical experience with MySQL and /or NoSQL databases like Couchbase, DynamoDB, Cassandra
• Practical experience with Caching frameworks Memcached/Redis, Message Queues (JMS, RabbitMQ)
• Practical hands-on experience in JavaScript UI preferred
• Experience in building high performance, high availability REST APIs and REST clients
• Expertise with log file analysis using one or more of ELK, or Splunk
• Prior experience with CI/CD, Container architecture - Docker/Jenkins and build scripts Maven/Ant
• Prior experience in transformation to cloud platforms is preferred
• Experience with Kafka is a definite plus
• Experience with building analytics pipeline and analytics DB is a plus
• Strong practical experience in applying design patterns, multithreading concepts to solve complex problems, strong problem solving skills

• Perform requirement gathering, analysis and design        
• Develop, create, modify and fix software applications     
• Complete Unit & Integration Testing       
• Deploy software             
• Initial Validation after deployment           
• Create documentation   
• Troubleshooting and problem solving     

Requirements

• Educational Background                             
• Experience (0+ years)
• The person should be proficient in Computer Science. Get your basics right, we will teach you everything else!

Examinations                    

• You will be asked questions concerning the following topics, Networking, Data Structures,  Design patterns, Algorithm Analysis, and Concurrency. The questions are all language agnostic.
• You will also be asked to code a trivial Java program that meets specific requirements.
• Java, Maven, Spring-boot, REST/RESTful services, Javascript, Node.js, Angular,  React,

Our Stack  

• SQL, NoSql,  Hibernate, Java Persistence API (JPA),
• Shell Scripting, Powershell scripting,
• JSON, XML

Benefits

• Unlimited Leave policy
• Apart from unlimited policy 9-Public Holiday over the year (Jan to Dec)
• Medical policy coverage up and above your CTC
• Unlimited scope to learn technology - no restrictions team wise/project wise
• Wonderful work culture
• Life time WFH for candidates outside Kolkata
• Opportunity to work with a product based company
• Weekly 2 days fixed off
• This is a remote position. Sath Infotech Pvt. Ltd is an established IT Security Consulting firm and is looking for developers to join its team. This role will work with team members, client stakeholders, and individuals to support and enhance Identity and Access Management and other security applications. Should be proficient in Computer Science.
• If you like working with IT professionals across a variety of Enterprise Level Environments with diverse processes and configurations to identify and solve complex problems, Sath Infotech can offer a career path to become a subject matter expert in the high demand roles of Cyber Security Analyst/Consultant, Enterprise IT Auditor or IT Project Management.

Job Description

Required Skills: 

• Demonstrated and strong experience with Java Development (1.8 and above), Spring Boot, ability to design API and RESTful services, and an understanding of transactions
• Strong experience writing Microservices using Java 1.8 and above.
• Good Experience in Behavior Driven Design ( Cucumber , Gherkin ).
• Data design experience in application, noSQL, familiarity with modern technology and architecture (cloud, virtualization, object stores, etc.), and experience with SDLC tools and agile development methodology
• Experience with Angular JS preferred.
• Experience with spring cloud , swagger and devOps tools preferred
• Experience in Domain Driven Design preferred.
• Experience with Mulesoft preferred.
• Experience in SAFe Agile methodology preferred.
• Experience in building presentation layers using Front-end technologies
• Good problem solving skills and strong analytical skills.
• Ability to lead technology initiatives, develop reports, dashboards, and processes to continuously monitor data quality and integrity, an ability to interpret system / business requirements and prepare specification and design document.

Desired Skills:

• Java, J2EE, JDBC , EJB, Servlets,, Messaging Platform, Agile waterfall

Job Description:

• Must have experience of 1 – 6 years.
• Experience in Java/J2EE platform.
• Experience in web application development with JSP, Servlet, Spring Boot, Hibernate
• Knowledge of MySQL database.
• Developed REST and SOAP web services..
• Experience in version control system and build tool
• Must have completed BE/MCA/M.Sc/MTech.