Java Developer

JOB DESCRIPTION

Experience: 5-8 years

Location: Mumbai

Wissen Technology is now hiring for a Senior Java Developer - Bangalore 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. - 5-8 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.

Website : www.wissen.com 

Key Responsibilities:

• Design, develop, and maintain scalable backend applications using Java and Spring Boot.
• Build and consume RESTful APIs and ensure secure, reliable API integrations.
• Develop microservices-based architecture and deploy applications in cloud environments.
• Work with cloud platforms such as AWS/Azure/GCP for application deployment and management.
• Write clean, maintainable, and efficient code following best practices.
• Implement CI/CD pipelines and support DevOps practices.
• Optimize applications for performance, scalability, and reliability.
• Collaborate with cross-functional teams including frontend, QA, DevOps, and product teams.
• Participate in code reviews, technical design discussions, and architectural decisions.
• Troubleshoot production issues and provide timely resolution.

Required Skills & Qualifications:

• 5–10 years of hands-on experience in Java (Java 8 or above).
• Strong experience with Spring Boot, Spring MVC, Spring Data, Spring Security.
• Solid understanding of RESTful API design & development.
• Experience in microservices architecture.
• Hands-on experience with at least one cloud platform (AWS / Azure / GCP).
• Knowledge of containerization tools like Docker and orchestration tools like Kubernetes.
• Experience with relational and/or NoSQL databases (MySQL, PostgreSQL, MongoDB).
• Familiarity with CI/CD tools (Jenkins, GitHub Actions, etc.).
• Strong understanding of Git and version control practices.
• Good understanding of design patterns and object-oriented programming principles.

Must Have: 

● Experience in Java or Core Java (7+ years) 

● Experience in SpringBoot (4+years) 

● Good Knowledge of Microservice, Multithreading, design pattern Concept 

● Framework: SpringBoot, Spring Security, JAX-RS, Hystrix, Kafka 

● ORM: Spring Data JPA. Hibernate 

● Cloud Service: AWS(MSK, S3), Serverless lambda Functions 

● Build tools: Maven, Gradle 

● Good To Have: Spring Webflux, Web Client, ecommerce domain experience. 

About this roleWe are seeking an experienced MongoDB Developer/DBA who will be

responsible for maintaining MongoDB databases while optimizing performance, security, and

the availability of MongoDB clusters. As a key member of our team, you’ll play a crucial role in

ensuring our data infrastructure runs smoothly.

You'll have the following responsibilities

 Maintain and Configure MongoDB Instances - Responsible for build, design, deploy,

maintain, and lead the MongoDB Atlas infrastructure. Keep clear documentation of the

database setup and architecture.

 Ownership of governance, defining and enforcing policies in MongoDB Atlas.Provide

consultancy in drawing the design and infrastructure (MongoDB Atlas) for use case.

 Service and Governance wrap will be in place to restrict over provisioning for server size,

number of clusters per project and scaling through MongoDB Atlas

 Gathering and documenting detailed business requirements applicable to the data

layer.Responsible for designing, configuring and managing MongoDB on Atlas.

 Design, develop, test, document, and deploy high-quality technical solutions on the

MongoDB Atlas platform based on industry best practices to solve business needs.

Resolves technical issues raised by the team and/or customer and manages escalations as

required.

 Migrate data from on-premise MongoDB and RDBMS to MongoDB AtlasCommunicate

and collaborate with other technical resources and customers in providing timely updates

on status of deliverables, shedding light on technical issues, and obtaining buy-in on

creative solutions.

 Write procedures for backup and disaster recovery.

You'll have the following skills & experience

 Excellent analytical, diagnostic skills, and problem-solving skills

 Should understand the Database concept and develop expertise in designing and

developing NoSQL databases such as MongoDB

 MongoDB query operation, import and export operation in database

 Experience in ETL methodology for performing Data Migration, Extraction,

Transformation, Data Profiling and Loading

 Migrating database by ETL, migrating database by manual process and designing,

development, implementation

 General networking skills, especially in the context of a public cloud (e.g. AWS – VPC,

subnets, routing tables, nat / internet gateways, dns, security groups)

 Experience using Terraform as an IaC tool for setting up infrastructure on AWS

CloudPerforming database backups and recovery

 Competence in at least one of the following languages (in no particular order): Java, C++,

C#, Python, Node.js (JavaScript), Ruby, Perl, Scala, Go

 Excellent communication skills, often being able to compromise but draw out risks and

constraints associated with solutions. Be able to work independently and collaborate with

other teams

 Proficiency in configuring schema and MongoDB data modeling.

 Strong understanding of SQL and NoSQL databases.

 Comfortable with MongoDB syntax.

 Experience with database security management.

 Performance Optimization - Ensure databases achieve maximum performance and

availability. Design effective indexing strategies.

LogiNext is looking for a technically savvy and experienced senior developer to lead development efforts. You will help the team grow in size and skills, optimizing their code while working on your own. You will design, and develop products that exceed client expectations in terms of value and benefit. You will collaborate on scalability issues involving access to massive amounts of data and information.

You have hands-on experience in building secure, high-performing and scalable systems in Java. Your design intuition inclines toward usability, elegance and simplicity. You are biased towards open-source tools and existing frameworks. You have successfully shipped applications with a beautiful front-end and intelligent backend. You have demonstrated strong interpersonal and communication skills.

Responsibilities

Design and development efforts for high-volume, low-latency applications for real-time event based systems Deliver high-availability and high-performance platform using microservices architecture Identify bottlenecks and inefficiencies in code, and devise solutions to production and non-production issues Keep an eye out for open source projects and technology trends that can be introduced in the products Transform business functionalities and production specifications into technical requirements and low level design Be hands-on, adopt a practical approach to software and technology Work with product management and other teams to build highly scalable products

Requirements

Bachelor’s degree in Computer Science, Information Technology or a related field 0 to 1 years of design and development experience in scalable and distributed enterprise applications using Java/J2EE, JPA, Spring framework and RESTful web services Excellent coding skills in Java Experience in managing, implementing and optimizing big data stores such as MySQL, MongoDB, Elasticsearch Experience in deploying applications and using various managed services provided by cloud platforms (AWS, Azure) Experience in front-end technologies HTML5, CSS3, jQuery, AngularJS and D3.js is preferred Strong foundation in computer science, with strong competencies in data structures, algorithms and software design Proven ability to drive large scale projects with deep understanding of Agile SDLC, high collaboration and leadership

THE POSITION:

- 3+ years of relevant experience in designing & implementing scalable, resilient backend microservices

- Expert at any backend programming language (Python/GoLang preferrable) and has exposure to API design and scalable architecture

- Hands-on experience on a couple of RDBMS/NoSQL/In-memory DBs

- Great database modelling skills

- Ability to choose the right algorithm, data-structure, and design pattern for the given problem statement

- Knowledge of any cloud based platform like AWS or GCP and scaling on the go

- Understanding of various application security principles and experience with building applications secure by design

QUALIFICATION:

                - We don't care about which college you are from, if you have the power to convert coffee into code, we got you.

• The ideal candidate must have experience in enterprise application design, system performance and scalability
• 5+ year experience in web services, distributed systems, and highly available and scalable applications.
• Strong object-oriented programming skills in Java
• Very good knowledge of Core Java and J2EE and should have worked on high availability, low latency platforms.
• Ability to question status quo and identify bad design/code patterns which can impact performance and maintainability of the code.
• Excellent understanding of system design and design patterns.
• Previous experience with the Agile methodology.
• Experience in developing robust RESTful services is desirable.
• Have very good communication skills
• Have strong experience in the Spring framework.
• Good experience in SQL/Oracle
• BS degree in computer science or related fields. MS degree desired