.Net Developer

We're looking for a high-energy Java engineer to design and implement scalable microservices using Spring Boot. You'll collaborate across teams to deliver clean, efficient, and high-performance backend services.

🛠️ Key Responsibilities

• Design, develop, and maintain RESTful services and microservices using Spring Boot
• Utilize OOP, Java Collections, Exception Handling, and method overloading/overriding in modern coding practices
• Build and optimize multithreaded systems (Threads, synchronization, wait(), notify(), yield()) for performance and scalability
• Write unit and integration tests (JUnit, Mockito, Spring Test) to ensure code quality
• Collaborate with cross-functional teams (QA, DevOps, Product) through code reviews and feature planning
• Diagnose and resolve performance bottlenecksJVM tuning, SQL/caching optimizations
• Adhere to coding standards, best practices, and participate in peer code review

🎯 Required Skills & Experience

• Strong Java fundamentals: OOP, Collections, Generics, Exception Handling
• Concurrency mastery: multithreading, synchronization primitives (wait(), notify(), yield())
• Spring Boot: solid experience building, testing, deploying REST APIs
• Microservices: design, inter-service communication, stateless service patterns
• Testing frameworks: JUnit, Mockito, Spring Test
• Performance tuning: profiling, optimization with JVM settings and database queries
• Tools & practices: Git, Maven/Gradle, CI/CD pipelines, Docker/Kubernetes (plus)
• Soft skills: strong problem-solving, collaboration, and effective communication

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.

Role: DevOps Engineer

Exp: 4 - 7 Years

CTC: up to 28 LPA

Key Responsibilities

•   Design, build, and manage scalable infrastructure on cloud platforms (GCP, AWS, Azure, or OCI)

•   Administer and optimize Kubernetes clusters and container runtimes (Docker, containerd)

•   Develop and maintain CI/CD pipelines for multiple services and environments

•   Manage infrastructure as code using tools like Terraform and/or Pulumi

•   Automate operations with Python and shell scripting for deployment, monitoring, and maintenance

•   Ensure high availability and performance of production systems and troubleshoot incidents effectively

•   Monitor system metrics and implement observability best practices using tools like Prometheus, Grafana, ELK, etc.

•   Collaborate with development, security, and product teams to align infrastructure with business needs

•   Apply best practices in cloud networking, Linux administration, and configuration management

•   Support compliance and security audits; assist with implementation of cloud security measures (e.g., firewalls, IDS/IPS, IAM hardening)

•   Participate in on-call rotations and incident response activities

About the Role:

We are seeking a skilled Java Developer to join our team. The ideal candidate will have strong experience in core Java development along with exposure to modern frameworks and tools. You will be responsible for designing, developing, and maintaining scalable applications while ensuring performance, security, and code quality.

Key Responsibilities:

• Design, develop, test, and maintain Java-based applications.
• Write clean, efficient, and reusable code following best practices.
• Collaborate with cross-functional teams (Product, QA, DevOps, etc.) to deliver high-quality software.
• Troubleshoot, debug, and optimize application performance.
• Participate in code reviews and contribute to continuous improvement.
• Stay updated with emerging trends, tools, and technologies in the Java ecosystem.

Required Skills & Qualifications:

• Strong proficiency in Core Java (Java 8/11/17).
• Experience with frameworks such as Spring / Spring Boot / Hibernate.
• Good knowledge of REST APIs, Microservices architecture.
• Familiarity with SQL/NoSQL databases (MySQL, PostgreSQL, MongoDB, etc.).
• Understanding of multithreading, collections, and design patterns.
• Experience with version control systems (Git) and build tools (Maven/Gradle).
• Solid problem-solving skills and ability to work in an Agile environment.

Good to Have:

• Exposure to cloud platforms (AWS, Azure, GCP).
• Knowledge of containerization (Docker, Kubernetes).
• Experience with messaging systems (Kafka, RabbitMQ).
• Familiarity with CI/CD pipelines.

• Core Java 5.0 and above
• Extensive experience in developing enterprise-scale n-tier applications for the financial domain.
• 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, preferably Sybase database
• Good knowledge of multi-threading and high volume server side development
• Experience in sales and trading platforms in investment banking/capital markets
• Basic working knowledge of Unix/Linux.
• Strong written and oral communication skills.
• Should have the ability to express their design ideas and thoughts.

**Candidates from Dehradun or nearby locations are preferred**

Notice period: Immediate to 30 days

About the Job:-

The ideal candidate will be familiar with the full software design life cycle. They should have experience in designing, coding, testing and consistently managing applications They should be comfortable coding in a number of languages and have the ability to test code in order to maintain high-quality code.

➜ Responsibilities:-

1. Design, code, test and manage various applications

2. Collaborate with the engineering team and product team to establish the best products

3. Follow outlined standards of quality related to code and systems

4. Develop automated tests and conduct performance tuning

➜ Requirement:-

• Proficient ASP.NET/.NET CORE, Web API, MVC, Entity framework and MS SQL/MySQL is mandatory.

• Experience with HTML5/CSS3, JavaScript/jQuery, Angular; web-service: SOAP, RESFUL, MVC API

• Willing to learn new technologies

• Have good knowledge or experience with Agile/SCRUM development method

• Detail oriented, self-motivated and disciplined, with the ability to complete assigned tasks with minimal oversight in a professional and timely manner is a must

At least 4 years' experience as a Node.js developer.

Experience in Microservices

Extensive knowledge of JavaScript, web stacks, libraries, and frameworks.

Mandatory experience in Postgres and MySql.

Knowledge of front-end technologies such as HTML5 and CSS3.

Superb interpersonal, communication, and collaboration skills.

Exceptional analytical and problem-solving aptitude.

• Hands-on with Spring boot and Java coding. Core Java- Java 8/1.8.
• Experience should be with Springboot, Hibernate & Microservices
• Should be well versed with Microservices, OOPS, MVC Architecture, Web services & API development.
• Should be really strong in concepts and should be able to work independently
• Experience in web services connection

• Must have experience in either of JavaScript frameworks: Angular
• Must have experience in either of backend software development [J2EE, Spring Boot, Spring core, JPA]
• Must have experience in designing/implementing Hibernate/ORM, Restful web services, Micro Services using Java
• Knowledge with relational/ NoSQL databases (e.g., Oracle, MySQL, MongoDB)
• Knowledge with versioning (Git or SVN) /build tools (Maven/Ant/Gradle/Junit), Unit testing & code coverage tools is desired
• Knowledge of App / Web servers (NGINX / Tomcat / Jboss Wildfly)
• Understands the process of new application development and has the ability to apply these concepts with minimal mentoring and supervision.
• Advanced knowledge experience using any of IDE (e.g., Eclipse, SonarQube, STS, VS Code)
• Knowledge on Cloud platform, technologies & deployments is an added advantage
• Resolves technical issues through debugging, research, and
• Must have experience with Agile tools

• Good knowledge in product development domains
• Knowledge in Finance and Insurance domain preferred
• Maintain quality and ensure responsiveness of
• Complete application development by coordinating requirements, schedules, and activities contributing to team meetings;
• Troubleshooting development and production problems across multiple environments and operating platforms.
• Collaborate with the rest of the engineering team to design and launch new features
• Understanding and implementation of security and data
• Ensure designs are in compliance with specifications and standards and best industry
• Usage of Process tools – JIRA, TFS, HP QC or any other agile tools, also knowledge of CMM Level 3 development process.
• Self-motivated & working independently with minimal
• Maintain code integrity and
• Experience working with graphic designers and converting designs to visual
• Follow the coding standards for java and angular

• Usage of troubleshooting tools like J Profiler, J Meter or application performance tuning
• Exposure to Non-web-based developments, for both mobile and
• Development experience using Docker, Kubernetes, Containerization etc in AWS or other cloud platforms
• Willing to take up proof of concepts and showcase the technical capability
• Usage of design tools Visio or draw io
• Usage of CI/CD pipeline