Java Developer

Java Lead We are solving complex technical problems in the financial 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. 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. Experience: 8–13 years in Java development. Domain Expertise: Background in product-based companies, investment banking experience preferred. Leadership: Proven ability to lead teams of 3–4 members. Technical Depth: Hands-on with complex systems and distributed architectures. Soft Skills: Strong analytical thinking, problem-solving, and excellent communication. Process Knowledge: Expertise in end-to-end SDLC and Agile methodologies. Tech Stack ● Languages & Frameworks: Core Java, J2EE, Spring Boot, Spring Framework. ● Architecture: RESTful APIs, Microservices. ● Persistence: Hibernate/JPA. ● Databases: Postgres, MySQL (or similar). ● Tools: Maven/Gradle, CI/CD pipelines. ● Cloud: AWS/Azure (nice to have). 

Role & Responsibilities

Take end-to-end ownership of critical backend services — from architecture and development to deployment and scale.

Design systems for performance, reliability, and observability. Identify bottlenecks and eliminate them proactively.

Collaborate with product and design to deeply understand user pain points and build the right solutions.

Work independently and own complex modules with minimal oversight.

Champion clean, maintainable code and help set a high bar for engineering excellence across the team.

Stay up-to-date with new tools, technologies, and backend trends — and bring the best ideas into our stack.

Ideal Candidate

2+ years of backend development experience, ideally with Kotlin and Spring Boot (or willingness to ramp up quickly).

You’ve worked in fast-moving teams and thrive when given room to figure things out.

You take initiative and can drive complex modules to completion without needing constant guidance.

Strong with both low-level and high-level design; you know how to build scalable, reliable RESTful APIs.

Proficient with relational databases and aware of common performance pitfalls.

Confident with debugging and optimizing — memory leaks, latency issues, and other hard-to-find problems don’t scare you.

You write clean, testable code and know how to leave systems better than you found them.

You bring a product mindset — caring not just about what’s built, but why and how it delivers value to users.

• 3+ years of Experience in software Design and development and familiar with technologies - Java, Java-J2EE, Spring Boot, Hibernate, Ajax, REST API, Micro services etc.
• Working knowledge of JVM internals
• Working knowledge of any database (MySQL or HSQLDB)
• Working knowledge of No-SQL database (Mongo or Dynamo DB)
• Working experience with messaging (JMS/RabbitMQ)
• R & D on new advanced cloud-based technologies in a test-driven agile development.
• Knowledge in designing and architecting systems with high scalability and performance requirements.
• Ability to understand infrastructure for performance evaluation and reporting of cloud-based services, namely AWS
• knowledge of key AWS services like EC2, S3, Lambda, CloudWatch etc.
• Certification on AWS Fundamendals
• Excellent communication skills
• ability to effectively articulate technical challenges and solutions
• skilled in interfacing with internal and external technical resources
• Good in debugging problems and mentoring teams on technical front

Requirements

• Overall 2-8 years of software development experience in building web-based and highly scalable applications 

• Excellent understanding of core computer science concepts like algorithms, data structure, system design, OOP, etc. 

• Deep knowledge and development expertise in Core Java and SpringBoot or other equivalent frameworks 

• Strong experience in HTML5 and CSS3 and should have basic experience in JS technologies

• Good knowledge of database concepts, having SQL writing experience, and familiarity with at least one of the relational databases

• Worked in a CI/CD environment with Jenkins

• Experience working in an agile team with software engineering practices like automated testing, test-driven development, continuous integration, etc is a big plus. 

• Ability to quickly learn and evaluate new technologies and work effectively in a fast-paced, dynamic environment

• Strong oral and written communication.

SENIOR SOFTWARE DEVELOPER (BACKEND DEVELOPMENT):

We are looking for a Java Developer with experience in building high-performing, scalable, enterprise-grade web applications.
You will be part of a talented software team that works on mission-critical applications. Java developer roles and responsibilities include managing Java/Java EE application development while providing expertise in the full software development lifecycle, from concept and design to testing.

Responsibilities
• Java developer responsibilities include designing and developing high-volume, low-latency applications for mission-critical systems and delivering high-availability and performance
• Contribute in all phases of the development lifecycle
• Write well designed, testable, efficient code
• Ensure designs are in compliance with specifications
• Prepare and produce releases of software components
• Support continuous improvement by investigating alternatives and technologies and presenting these for
architectural review

Requirements
• BS/MS degree in Computer Science, Engineering or a related subject from renowned (IITs, NITs, BITS etc) colleges
• Excellent aptitude, algorithmic and puzzle solving skills
• Proven hands-on Software Development experience
• Proven working experience of 2+ years in Java development
• Hands on experience in designing and developing applications using Java EE platforms
• Object Oriented analysis and design using common design patterns.
• Profound insight of Java and JEE internals (Classloading, Memory Management, Transaction management, Multi-Threading etc)
• Good knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate)
• Experience in the Spring Framework
• Experience in developing web applications using at least one popular web framework (JSF, Wicket, GWT,
Spring MVC)
• Experience with agile development

The Junior/ Senior Software Engineer will be a member of the development team for Supply Chain Application module suite. The Supply Chain modules includes components at various layers, including server-side, integration, supply chain planning engines and user-interface. This individual will be responsible for participating in module development and providing technical assistance to junior members of the team.

Experience and Skills:

• 4-10 years of of experience in writing software
• Strong analytical problem solving skills
• Strong Object Oriented Programming Skills. Good understanding of data structures and algorithms.
• Extensive knowledge of the Java programming language
• Understanding of software design patterns, J2EE components (EJB, JSP, Servlets), and XML
• Experience with relational databases (preferably Oracle) and Object/Relational frameworks. Should be able to write SQL queries, procedures, triggers and do basic performance tuning.
• Experience with C++ is a plus.
• Functional knowledge of supply chain management domain.
• Prior experience in development or consulting with an enterprise software vendor – preferably in supply chain planning or forecasting area.
• Experience with enterprise integration patterns & protocols, including SOAP, REST, JMS, EDI is a plus.
• Experience writing build & deployment scripts (e.g. Ant)
• Excellent communication (verbal and written) and interpersonal skills
• Systems implementation skills: requirements/process analysis, conceptual and detailed design, configuration, testing, training, support
• Some experience with a scripting language such as Python or Ruby preferred
• Some experience with newer web client technologies such as AJAX, EXTJS preferred.

Essential Functions:

• Producing design documents based on a requirements document and participating in design reviews
• Producing effort estimates
• Writing code, automated unit and functional tests, and build/deployment scripts
• Participating in code reviews
• Executing performance/scalability tests & profiling hotspots
• Collaborating with QA, Technical Operations and Production Support during the various phases of a project

Education:

BE/ BTech/ ME/ MTech in Engineering, Computer Science