Java Developer

Job Description

We are looking for a hands-on Tech Lead – Java with strong software engineering fundamentals, a deep understanding of Java-based backend systems, and proven experience leading agile teams. This role involves a balance of individual contribution and technical leadership — mentoring developers, designing scalable architectures, and driving the success of product delivery in fast-paced environments.

Key Responsibilities

• Lead the end-to-end design, development, and deployment of Java-based applications and RESTful APIs.
• Collaborate with product managers and architects to define technical solutions and translate business requirements into scalable software.
• Guide and mentor team members in best coding practices, design patterns, and architectural decisions.
• Drive code reviews, technical discussions, and ensure high code quality and performance standards.
• Troubleshoot critical production issues and implement long-term fixes and improvements.
• Advocate for continuous improvement in tools, processes, and systems across the engineering team.
• Stay up to date with modern technologies and recommend their adoption where appropriate.

Required Skills

• 5+ years of experience in Java backend development with expertise in Spring/Spring Boot and RESTful services.
• Solid grasp of Object-Oriented Programming (OOP), system design, and design patterns.
• Proven experience leading a team of engineers or taking ownership of modules/projects.
• Experience with AWS Cloud services (EC2, Lambda, S3, etc.) is a strong advantage.
• Familiarity with Agile/Scrum methodologies and working in cross-functional teams.
• Excellent problem-solving, debugging, and analytical skills.
• Strong communication and leadership skills.

About HummingWave

HummingWave is a leading IT product development company specializing in building full-scale application systems with robust cloud backends, sleek mobile/web frontends, and seamless enterprise integrations. With 50+ digital products delivered across domains for clients in the US, Europe, and Asia-Pacific, we are a team of highly skilled engineers committed to technical excellence and innovation.

Thanks

Requirements:

• 4-6 years of experience in developing Enterprise Web Applications using Java/J2EE technologies with a good professional track record.
• Excellent knowledge in Core Java (J2SE) and J2EE technologies.
• Proficient knowledge in Servlets, JDBC & JSP.
• Good knowledge of Spring framework (MVC, Cloud, Data and Security. Etc) and ORM framework like JPA/Hibernate.
• Strong knowledge of Exception Handling, Collections, File I/O Streams, Interfaces, and logging mechanisms is a must.
• Experience in developing REST APIs and integration of third-party APIs.
• Proficient knowledge in SQL/PLSQL.
• Expertise in application/web server deployment and connection pooling techniques.
• Cloud deployment (AWS & Azure) will be an added advantage.
• Experience in Version Control tools like Git, Bitbucket, etc.
• Experience in data security and protocols is a must.
• Maven and IDE tools experience is a must.
• Multi-threading and serialization techniques knowledge is a must.
• Good understanding of end-to-end software development lifecycle.
• Ability to read and understand requirements and design documents.
• Good Analytical skills and should be self-driven. Good communication with interpersonal skills.
• Open to learning new technologies and domains.
• A good team player and ready to take up new challenges
• Languages: Java(J2SE), J2EE (Servlets, JSPs, JDBC)
• Databases: MySQL, Oracle, SQL Server, PostgreSQL.
• DB Script: SQL and PL/SQL
• Frameworks: Spring, Spring Boot, Jersey, Hibernate and JPA
• OS: Windows, Linux/Unix.
• Cloud Services: AWS and Azure (Good to have)
• Version Control tools: Git, Bitbucket.
• Deployment Servers: Tomcat, JBoss, and Web sphere
• Build Tools: Gradle/Maven

• 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

• Experience building large scale, large volume services & distributed apps., taking them through production and post-production life cycles
• Experience in Programming Language: Java 8, Javascript
• Experience in Microservice Development or Architecture
• Experience with Web Application Frameworks: Spring or Springboot or Micronaut
• Designing: High Level/Low-Level Design
• Development Experience: Agile/ Scrum, TDD(Test Driven Development)or BDD (Behaviour Driven Development) Plus Unit Testing
• Infrastructure Experience: DevOps, CI/CD Pipeline, Docker/ Kubernetes/Jenkins, and Cloud platforms like – AWS, AZURE, GCP, etc
• Experience on one or more Database: RDBMS or NoSQL
• Experience on one or more Messaging platforms: JMS/RabbitMQ/Kafka/Tibco/Camel
• Security (Authentication, scalability, performance monitoring)

• 2 + years of software development experience utilizing Java based frameworks and technologies to build enterprise grade product solutions.
• 2+ years of experience designing, developing and documenting RESTful APIs.
• Strong understanding of concepts/technologies like Spring MVC, Spring boot, J2EE, EJB, application/API security, API governance/gateway platforms like apigee or kong.
• Good understanding of RDMS concepts and development preferably using MS SQL Server.
• Experience using test automation technologies like cucumber, selenium is a big plus.
• Partner with scrum masters to address technical blockers/impediments to progress.
• Prior experience working with agile scrum-based development methodology. Participate in sprint planning and estimate development efforts for features and stories.
• Partner with DevOps to install and configure/tune application containers like embedded Spring boot tomcat and webserver technologies preferably nginx or apache.
• Partner with cloud engineering group to outline the infrastructure provisioning requirements/needs for new product development.
• Design and develop CI/CD tools and process preferably using Jenkins to configure build jobs for APIs and design pipeline to promote artifacts from development all the way to production
• Experience with messaging technologies like kafka is a huge plus
• Work with Test Automation engineering team to integrate test automation scripts as part of the CI/CD process.
• Prior proven experience of utilizing and productionizing container/container orchestration technologies like Docker, kubernetes.
• Participate and Resolve issues related deployments, application performance etc.

• Develop creative solutions and write technical design based on the requirements.
• Work closely with peer teams to ensure that applications are written to allow for overall system performance.
• Assist in tuning and optimization.
• Develop and execute unit tests for product components.
• Perform peer code reviews and provide feedback.
• Promote high quality, scalability, and timely completion of projects.
• Apply agile approach to coordinate development and determine project scope and limitations.
• Bachelor degree in Engineering, CS or equivalent experience
• Development in Core Java, J2EE, Struts, spring, Client-Side scripting, Hibernate, Database
• Development of scalable core-java applications, Web Applications and Web Services
• OOP concepts 
• Data Structures, algorithms and their applications
• Strong problem-solving skills
• Experience in building microservices
• Strong experience with Spring Boot stack (spring cloud, spring-data)
• Extensive experience in developing and consuming REST APIs
• Experience in Kafka distributed messaging
• Hands-on experience in Redis, Apache Ignite, Hazelcast
• Strong experience in RDMS and NoSQL databases Mongo
• Experience in using Elastic Search
• Experience in profiling applications
• Strong analytical skills and general logical reasoning
• Excellent written and verbal communication skills.
• Good understanding of Software development life cycle (SDLC)
• Basic SQL queries