Java Developer

Java Developer – Job Description Wissen Technology is now hiring for a 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. - 4 to 7 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 Wissen Technology: Wissen Technology is a niche global consulting and solutions company that brings unparalleled domain expertise in Banking and Finance, Telecom and Startups. Wissen Technology is a part of Wissen Group and was established in the year 2015. Wissen has offices in the US, India, UK, Australia, Mexico, and Canada, with best-in-class infrastructure and development facilities. Wissen has successfully delivered projects worth $1 Billion for more than 25 of the Fortune 500 companies. The Wissen Group overall includes more than 4000 highly skilled professionals. Wissen Technology provides exceptional value in mission critical projects for its clients, through thought leadership, ownership, and assured on-time deliveries that are always ‘first time right’. Our team consists of 1200+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like Wharton, MIT, IITs, IIMs, and NITs and with rich work experience in some of the biggest companies in the world. Wissen Technology offers an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation. We have been certified as a Great Place to Work® for two consecutive years (2020-2022) and voted as the Top 20 AI/ML vendor by CIO Insider. 

Job Role Java lead

Experience 8+ years

Notice period Immediate

Location Bangalore

Note: OMS & Retail domain Experience is mandatory

Introduction

We are seeking a Development Lead (Dev Lead / Technical Lead) with strong hands-on experience in Java and

Microservices to lead a team of developers in designing, developing, and delivering high-quality, scalable

applications. The role requires a balance of coding, technical decision-making, and team mentorship.

Job Description

• Create, design, and implement layouts for new and existing software solutions.

• Must be able to lead a team of engineers and ensure high quality software delivery from the team. Be

approachable to the team members.

• Take complete ownership of the Design that they are responsible for.

• Ability to understand business requirements of clients and translate them into technical requirements.

• Identify impacts of planned work on existing functionality.

• Plan and estimate work to be completed.

• Conduct code reviews to ensure that the software deliverables are of the highest quality.

• Keep an eye on the Tech Debt and plan for managing at an acceptable level.

• Lead interactions with clients from a Tech team perspective.

Certifications :

• Oracle Certified Java Professional

• Spring Certified Professional

• Any NoSql / Cassandra / MongoDB certified developer

• GCP, AWS, & Azure Certified (Mandatory)

• Any retail OMS / Supply Chain product certifications

Primary Skills :

• 8+ years of proven experience in the industry, with at least 2 years as an Lead or similar role designing

and developing enterprise-scale applications.

• Bachelors in engineering / technology (4 year) or master's in computer applications (2 year)

• Must possess at least 6+ years of Software development experience.

• Expert knowledge in at least one object-oriented programming language like Java, one backend

framework like Spring Boot / Node JS, one UI framework like React JS / Angular JS and RDBMS or NoSQL

database.

• Excellent knowledge of front-end programming languages, such as HTML, CSS, JavaScript, and AngularJS,

with the ability to render server-side and client-side content.

• Helps identify newer practices and adoption of existing ones. Ensure that the code quality is maintained

via own and/or peer code reviews.

• Can lead the team in delivery of backend and user interface code. Ensure that the DevOps tasks are

executed well.

• Ensure that the software has the correct level of logging & monitoring in Production and LLEs.

• Exceptional problem-solving skills.

• Excellent written and verbal communication. Must understand the client’s business requirements and

translate them into software requirements. Has a view of the deliverable timeline and escalates when

needed.

• Ability to articulate technical designs & develop documentation, flowcharts, layouts, diagrams, charts etc.

• Experience in implementing OMS products for retail customers will be an added advantage.

• Ability to do estimation for the given requirements.

• Ability to lead technical discussions with clients.

• Must be able to do quick proofs of concepts and demos based on client requirements.

• Provide timely feedback on the performance of team members.

• Conduct interviews & provide feedback to achieve hiring objectives.

• Contributes to organization building functions such as hiring, training, mentoring, team building.

Secondary Skills:

• Participate in daily scrum calls and provide status updates, address issues proactively, and timely

reporting of risks to project managers.

• Take complete ownership of the non-functional requirements around Performance, Security/Compliance,

i18n/l10n, etc.

• Capable of leading a high-performance team in a two-week iteration cadence with frequent product

deliveries.

• Ability to socialize designs/ideas and collaborate with stakeholders.

• Self-motivated and works with minimal direction.

• Develop, enhance, and maintain Java-based applications using Spring Boot and related frameworks.
• Design, implement, and optimize Microservices with RESTful APIs.
• Build and manage Spring Batch jobs, including scheduling, chunk processing, partitioning, and error handling.
• Apply object-oriented design (OOD) and GoF design patterns (Factory, Singleton, Strategy, Observer, etc.).
• Write clean, maintainable, and scalable code following best coding standards.
• Integrate applications with databases (SQL/NoSQL) and messaging systems (Kafka/RabbitMQ).
• Participate in code reviews, technical discussions, and architectural decisions.
• Troubleshoot production issues and ensure application performance, scalability, and reliability.
• Work in an Agile/Scrum environment and collaborate with cross-functional teams.

Technical Skills Required

• ** Core Java 8+**, OOP, Collections, Multithreading
• ** Spring Boot**, Spring MVC, Spring Data JPA
• ** Spring Batch** (Job/Step configuration, Tasklets, Readers/Writers, partitioning)
• ** Microservices** (REST, API Gateway, service discovery, resilience patterns)
• ** Design Patterns** (Factory, Singleton, Adapter, Strategy, Builder, Observer, etc.)
• ** Databases:** MySQL/PostgreSQL/Oracle, MongoDB (optional)
• ** Messaging:** Kafka / RabbitMQ (preferred)
• ** Build tools:** Maven/Gradle
• ** CI/CD:** Jenkins, GitLab CI, or similar
• ** Cloud:** AWS / Azure / GCP (optional but preferred)
• ** Testing:** JUnit, Mockito

Role: Senior Backend Developer

Exp: 4 - 7 Years

CTC: up to 22 LPA

Key Responsibilities

• Design, develop, and maintain scalable applications using Java (Spring Boot) and Python (Flask).
• Build RESTful APIs and microservices following best practices.
• Implement event-driven architecture leveraging NATS messaging server.
• Deploy, manage, and optimize applications in Kubernetes and containerized environments.
• Develop and manage CI/CD pipelines, ensuring smooth deployment and delivery.
• Collaborate with cross-functional teams to deliver high-quality solutions.
• Write clean, maintainable, and well-documented code.
• Participate in code reviews and contribute to architectural decisions.
• Troubleshoot, debug, and optimize application performance.

Responsibilities :

• Lead the development of the backend systems for our client's first product.
• Build reliable, secure, and performant backend systems.
• Drive test coverage and continuous delivery automation within the team.
• Mentor and provide feedback to teammates.
• You should have a min of 8 years of software development experience and management.
• Can write code that is readable, maintainable, secure, and performant.
• Know the importance of tests and how to approach writing different types of tests, good intuition for REST API design
• Deep understanding of relational databases, transactions, entity-relationship modeling.
• Comfortable writing highly concurrent systems.
• Experienced in using profilers, tuning garbage collection, optimizing SQL queries.

• Golang, Java, Python, Ruby, Node.

Job Responsibilities:

* Design, build, and maintain efficient, reusable, and reliable Java code

* Ensure the best possible performance, quality, and responsiveness of the applications

* Identify bottlenecks and bugs, and devise solutions to these problems

* Help maintain code quality, organization, and automatization

* Prepare the technical design of complex technology components

Mandatory Skills:

* Proficient in Java (JDK 1.7) or above JDK 8 preferable, with a good knowledge of its ecosystems with a knack for writing clean, readable Java code, writing reusable Java libraries along with knowledge of concurrency patterns in Java

* Solid understanding of object-oriented programming along with various design and architectural patterns

* Hands on experience with Spring, Spring Boot, JUnit

* Familiarity with concepts of MVC, Microservices, RESTful

We are building for the future of work by changing the way the world looks at information and data paradigms. The Meaning Engine by India-based Needle Innovision enables building solutions by processing meaningful data out of anything stored anywhere - structured, unstructured data types, distributed, at scale and more. 

In our quest to do more, we are looking for a fantastic Java Tech Lead to join us in a hybrid setting from New Delhi. Below are some (seriously important) green flags that we are looking for from you: 

🟢 Ability to build and repeat the vision, not just work on tasks in the new phase of your career

🟢 The excitement to architect awesome products and resilient teams

🟢 Preparedness to move into enterprise-ready environments 

🟢 Build team motivation, delegate smartly and create a career path

This could be an awesome launching pad for someone who enjoys working towards big-picture goals, has a keen interest in leadership, and has a deep understanding of Java technologies.  Our teams are sustained on values of care and we offer a generous number of vacation days, the opportunity to craft your calendar with flexible schedules and very soon an insurance plan for you and your loved ones. We offer a starting salary range of 10-14LPA.

What you will do: 

• Collaborate with the client to understand problem statements and provide solutions for the same.
• Explain client requirements to the project team and plan and delegate work requirements
• Ensure the applications are released to production in the committed timeline
• Work with the QA team to ensure the code developed by the team passes the necessary quality check.
• Document application changes and development updates
• Set and evolve standards and best practices for our application development team 
• .Guide and mentor junior developers and engage in regular learning activities
• Oversee development process compliance and CI activities.

What you will bring: 

• 4 years minimum detail-oriented experience as a Senior Software Engineer.
• Experience in client interactions and/or are looking forward to doing that (preferred if, you have worked in B2B application development for large enterprises 🟢)
• Prior experience of at least one large project with a few people under your belt. (🟢)
• Expert-level knowledge of Java, Spring Boot, Oracle/Postgres.
• Expert-level knowledge on one or all of Hibernate/JPA/MyBatis.
• Experience in RESTful services and fundamentals of MVC architecture.
• Experience in working with and configuring web and application servers, such as Apache/Nginx/Tomcat.
• Proficient understanding of build tools, such as Maven/Gradle and code versioning tools, such as Git/SVN.
• Ability to review specifications documents and provide technical inputs on successfully implementing business solutions.

As a Java Tech Lead, you would be expected to understand business requirements, represent Needle to external stakeholders, and have experience in working in agile teams.

If leading a squad that implements digital transformation solutions at the intersection of data science and AI excites you, and if our awesome bite-sized team inspires you to be a part of our quest, we think you could be the one to help build the impact, we are looking to building here. 

Lets talk!

• Mandatory skills: Spring boot, Hibernate, Microservice
• Strong Java skills including Java 8 features 
• Good understanding of Microservices-based architecture and the related ecosystem 
• Exposure to MS SQL Server, Sybase etc. and NoSQL databases like MongoDB is also preferred.
• Great OO skills, including strong design patterns knowledge 
• Strong knowledge of software best practices, like Test-Driven Development (TDD) and
• Continuous Integration (CI) 
• Strong Knowledge of Data Structures & Algorithms
• Experience in working with data-driven RESTful APIs using web frameworks like SpringBoot,etc. 
• Should be able to do data modeling
• Good understanding of ORMs like Hibernate, JPA, etc. 
• Strong debugging skills
• Familiarity with architectural/ design patterns
• Advanced knowledge of Agile methodology.