Senior/Lead Java Developer

JOB DESCRIPTION

Experience: 3-5 years

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. - 3-5 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

Key Responsibilities

• Design, develop, and maintain scalable backend applications using Java and Spring Boot.
• Develop and maintain RESTful APIs following best practices.
• Implement API versioning strategies to support backward compatibility.
• Create and maintain API documentation using Swagger/OpenAPI.
• Implement Spring Transaction Management to ensure data integrity
• Use Spring Data JPA for database interactions and ORM mapping
• Write efficient SQL queries and optimize database performance
• Implement CQRS (Command Query Responsibility Segregation) where applicable.
• Develop systems based on event-driven architecture patterns.
• Write unit tests using JUnit and Mockito.
• Build and manage projects using Maven or Gradle build scripts.
• Use AI coding assistants such as Gemini Code Assist or similar tools to improve development efficiency.
• Participate in code reviews, design discussions, and architecture decisions.
• Collaborate with frontend teams, DevOps engineers, and product stakeholders.
• Strong problem-solving and debugging abilities
• Ability to design highly scalable backend systems
• Experience working in Agile/Scrum environments
• Good communication and collaboration skills
• Strong code quality and clean architecture mindset

Optional / Good to Have Skills

• Experience with Docker
• Knowledge of Kubernetes
• Experience with GraphQL API development
• Experience with cloud platforms (GCP / AWS / Azure)

Candidates from Supply Chain , Retail preferred

Key Responsibilities

• Design, develop, test, and deploy robust Java-based applications.
• Build and maintain scalable RESTful APIs and Microservices.
• Collaborate with cross-functional teams including Product, QA, DevOps, and Business stakeholders.
• Optimize application performance and troubleshoot production issues.
• Participate in code reviews and ensure adherence to coding standards and best practices.
• Develop secure and high-performance applications.
• Contribute to CI/CD pipeline implementation and automation.

Required Skills

• 5+ years of experience in Java development.
• Strong knowledge of Java 8/11/17 and Object-Oriented Programming concepts.
• Experience with Spring Boot, Spring MVC, Spring Data JPA, Hibernate.
• Hands-on experience in Microservices Architecture.
• Strong expertise in designing and consuming REST APIs.
• Experience with SQL databases (Oracle, MySQL, PostgreSQL).
• Knowledge of Git, Maven/Gradle, and version control practices.
• Experience with Kafka/RabbitMQ or other messaging platforms.
• Understanding of design patterns and software development best practices.
• Familiarity with Agile/Scrum methodologies.

Job responsibility The Lead Developer contributes, to create a customer’s solution, in the building phase of the software development lifecycle. The Software Engineer is responsible for performing the detailed design of application and technical architecture components and classes in accordance to the specification provided by the Solution Architect, for coding of SW components, and for the early testing phases (component testing), and system testing support

Hands on experience in Java, Python, scripting
- Design, implement, deploy and support web-based applications and web services using server technologies stacks that include Java, MySQL
- Experience in Java/J2EE using web frameworks Play or Spring boot, REST API Development and ORM (JPA, Hibernate eBean etc.)
- In depth knowledge of Design patterns and Data structures
- Databases - MySQL, Oracle, SQL
- Solid understanding of concepts like Web Services, SOA, REST APIs, Message Queue, Caching, Distributed/Scalable Architecture
- Secure application development best practices, such as OWASP
- Document and maintain all design documents and involve in review process.
- Experienced problem solving and debugging skills.
- Good verbal and written communication and interpersonal skills
- Experience in Agile methodology is added advantage
- Knowledge of Cloud Knowledge /Azure
- Must know about Unix knowledge
- experience in Elastic search

EDUCATION & EXPERIENCE :

- A professional degree in Computer Science from a reputable institution, backed by a consistent academic record.

- A knack for problem-solving, data structures, and algorithms.

- Proficiency in ElasticSearch.

- 3+ years of hands-on development experience, primarily in building products for large enterprises.

- Exceptional communication skills.

- Mastery in Java programming; familiarity with Python is a plus.- Experience with Spring Boot.

- Practical knowledge of one or more cloud-based technologies (e.g., ElasticSearch, Storm, Hazelcast, MongoDB, Ceph, Kafka) is highly desirable.

- Expertise in building concurrent and/or parallelized, highly performant scalable applications.

- A track record of identifying and addressing complex issues in scalable deployments.

- Exposure to Service-Oriented Architecture (SOA) and Test-Driven Development (TDD) is an added advantage.

ROLES & RESPONSIBILITIES :

- Dive deep into technical aspects (Analysis, Design & Implementation) as required.

- Take complete ownership of features within the product.

- Engage in debates and detailed discussions about functional and non-functional requirements with our Product Management team.

- Collaborate with the team to design solutions, seeking stakeholder input before implementation.

- Create essential artifacts such as functional specifications and detailed designs for your assigned features.

- Implement intricate features with an unwavering commitment to quality, following the Test- Driven Development (TDD) process.

- Maintain open lines of communication, promptly reporting risks and progress to your supervising manager.

- Share your expertise and mentor team members.

- Provide support by troubleshooting and creating Root Cause Analysis (RCA) for production issues, subsequently working on short-term and long-term solutions.

Real people. Real service.

At SupplyHouse.com, we value every individual team member and cultivate a community where people come first. Led by our core values of Generosity, Respect, Innovation, Teamwork, and GRIT, we’re dedicated to maintaining a supportive work environment that celebrates diversity and empowers everyone to reach their full potential. As an industry-leading e-commerce company specializing in HVAC, plumbing, heating, and electrical supplies since 2004, we strive to foster growth while providing the best possible experience for our customers.

Through an Employer of Record (EOR), we are looking for a new, remote Backend Engineer in India to join our growing IT Team. This individual will report into our Full Stack Team Lead and have the opportunity to work on impactful projects that enhance our e-commerce platform and internal operations, while honing your skills in backend and full stack development. If you’re passionate about creating user-friendly interfaces, building scalable systems, and contributing to innovative solutions in a collaborative and fun environment, we’d love to hear from you! 

Role Type: Full-Time

Location: Remote from India

Schedule: Monday through Friday, 4:00 a.m. – 1:00 p.m. U.S. Eastern Time / 12:00 p.m. – 9:00 p.m. Indian Standard Time to ensure effective collaboration 

Base Salary: $25,000 - $30,000 USD per year

Responsibilities:

• Collaborate with cross-functional teams to gather and refine requirements, ensuring alignment with business needs.
• Design, develop, test, deploy, and maintain scalable, high-performance software applications.
• Develop and enhance internal tools and applications to improve company operations.
• Ensure system reliability, optimize application performance, and implement best practices for scalability.
• Continuously improve existing codebases, conducting code reviews, and implementing modern practices.
• Stay up to date with emerging technologies, trends, and best practices in software development.

Requirements:

• Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field.
• 3+ years of hands-on experience in backend and/or full-stack development with a proven track record of delivering high-quality software.

Back-End Skills:

• Proficiency in Java and experience with back-end frameworks like Spring Boot.
• Strong understanding of database design, RDBMS concepts, and experience with SQL.
• Knowledge of RESTful API design and integration.

Development Lifecycle: Proven ability to contribute across the entire software development lifecycle, including planning, design, coding, testing, deployment, and maintenance.

Tools & Practices:

• Familiarity with version control systems, like Git, and CI/CD pipelines.
• Experience with agile development methodologies.

Additional Skills:

• Strong problem-solving and debugging capabilities.
• Ability to create reusable code libraries and write clean, maintainable code.
• Strong communication and collaboration skills to work effectively within a team and across departments.
• High-level proficiency of written and verbal communication in English.

Preferred Qualifications:

• Proficiency in HTML5, CSS3, JavaScript (ES6+), and responsive design principles.
• Expertise in modern JavaScript frameworks and libraries such as React, Angular, or Vue.js.
• Experience with cross-browser compatibility and performance optimization techniques. 
• Experience working on Frontend responsibilities such as: 
• Designing and implementing reusable, maintainable UI components and templates.
• Working closely with Designers to ensure technical feasibility and adherence to UI/UX design standards.
• Managing and updating promotional banners and site-wide templates to ensure timely execution of marketing initiatives.

Why work with us: 

• We have awesome benefits – We offer a wide variety of benefits to help support you and your loved ones. These include: Comprehensive and affordable medical, dental, vision, and life insurance options; Competitive Provident Fund contributions; Paid casual and sick leave, plus country-specific holidays; Mental health support and wellbeing program; Company-provided equipment and one-time $250 USD work from home stipend; $750 USD annual professional development budget; Company rewards and recognition program; And more!
• We promote work-life balance – We value your time and encourage a healthy separation between your professional and personal life to feel refreshed and recharged. Look out for our 100% remote schedule and wellness initiatives! 
• We support growth– We strive to innovate every day. In an exciting and evolving industry, we provide potential for career growth through our hands-on training, access to the latest technologies and tools, diversity and inclusion initiatives, opportunities for internal mobility, and professional development budget. 
• We give back –We live and breathe our core value, Generosity, by giving back to the trades and organizations around the world. We make a difference through donation drives, employee-nominated contributions, support for DE&I organizations, and more.  
• We listen – We value hearing from our employees. Everyone has a voice, and we encourage you to use it! We actively elicit feedback through our monthly town halls, regular 1:1 check-ins, and company-wide ideas form to incorporate suggestions and ensure our team enjoys coming to work every day. 

Check us out and learn more at https://www.supplyhouse.com/our-company! 

Additional Details: 

• Remote employees are expected to work in a distraction-free environment. Personal devices, background noise, and other distractions should be kept to a minimum to avoid disrupting virtual meetings or business operations.   
• SupplyHouse.com is an Equal Opportunity Employer, strongly values inclusion, and encourages individuals of all backgrounds and experiences to apply for this position. 
• To ensure fairness, all application materials, assessments, and interview responses must reflect your own original work. The use of AI tools, plagiarism, or any uncredited assistance is not permitted at any stage of the hiring process and may result in disqualification. We appreciate your honesty and look forward to seeing your skills. 
• We are committed to providing a safe and secure work environment and conduct thorough background checks on all potential employees in accordance with applicable laws and regulations.
• All emails from the SupplyHouse team will only be sent from an @supplyhouse.com email address. Please exercise caution if you receive an email from an alternate domain.

What is an Employer of Record (EOR)?

Through our partnership with Remote.com, a global Employer of Record (EOR), you can join SupplyHouse from home, while knowing your employment is handled compliantly and securely. Remote takes care of the behind-the-scenes details – like payroll, benefits, taxes, and local compliance – so you can focus on your work and career growth. Even though Remote manages these administrative functions, you’ll be a part of the SupplyHouse team: connected to our culture, collaborating with colleagues, and contributing to our shared success. This partnership allows us to welcome talented team members worldwide while ensuring you receive a best-in-class employee experience.

We are seeking an experienced Java Developer to join our team. The successful candidate will be responsible for designing, developing, and maintaining Java-based applications. As a Java Developer, you will work closely with project managers, business analysts, and other members of the development team to create high-quality software that meets our clients' needs.

Responsibilities:

• Design, develop and maintain Java-based applications
• Collaborate with cross-functional teams to identify, prioritize and execute tasks
• Participate in code and design reviews to maintain code quality and ensure that the software is consistent with established standards
• Ensure timely delivery of high-quality software by following agile development methodologies
• Provide technical guidance and mentorship to junior developers

Requirements:

• Strong knowledge of Java and object-oriented programming principles
• Experience with Java frameworks such as Spring, Hibernate, Struts
• Experience with web development technologies such as HTML, CSS, JavaScript, and AJAX
• Familiarity with relational databases such as MySQL, Oracle, or PostgreSQL
• Understanding of software development methodologies, such as Agile, Scrum, and Waterfall
• Excellent problem-solving and analytical skills
• Strong written and verbal communication skills
• Bachelor's or Master's degree in Computer Science or a related field

If you are passionate about Java development and are looking for a challenging and rewarding opportunity to grow your skills and career, we encourage you to apply for this position.

Good to have:

API Integrations with UI Layer