Lead Backend Developer

JOB DESCRIPTION

Experience: 3-8 years

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. - 3-8 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.

Responsibilities

• Provide technology contributions in
• Working in an agile development environment
• Translating business requirements into low-level application design
• Application code development through a collaborative approach
• Doing Full-scale unit testing
• Applying test-driven and behaviour-driven development (TDD/BDD) QA concepts
• Applying continuous integration and continuous deployment (CI/CD) concepts

Soft Skills

• Should be able to contribute as an individual contributor
• Should be able to execute his/her responsibility independently
• Excellent problem-solving skills and attention to detail.
• Focus on self-planning activities
• Firm with communication skills

Mandatory Skills

• Java, Spring Boot, Python and relational / non-relational databases
• Container orchestration - Kubernetes, Docker
• Development experience in Linux environment
• Modern SDLC tooling (Maven, Git)
• Micro services design-oriented application development and deploying the same using Container orchestration in the cloud environment
• Understanding CI/CD pipeline & related system development environment

Nice-to-have Skills

• Front-end technologies (JavaScript, HTML5, CSS, Angular)

We are seeking a skilled Java Developer with hands-on experience in Java and Spark to build scalable data processing solutions. You'll contribute to high-performance data pipelines and analytics platforms in a dynamic Agile environment.

Key Responsibilities

• Design and develop Java applications integrated with Apache Spark for ETL processes, data transformations, and analytics.
• Build and optimize Spark jobs (Spark SQL, DataFrames, Streaming) for large-scale data processing.
• Collaborate with data engineers and analysts to implement robust data workflows.
• Write clean, maintainable Java code following best practices (Spring Boot, Microservices preferred).
• Perform code reviews, unit testing, and contribute to CI/CD pipelines.
• Troubleshoot and optimize Spark performance for production workloads.
• Document technical solutions and mentor junior developers.

Required Skills & Qualifications

• 4-7 years of hands-on Java development experience.
• Strong expertise in Apache Spark (Spark Core, Spark SQL, PySpark basics).
• Proficiency in Java 8/11+ with multithreading and collections frameworks.
• Experience with data processing (ETL, data pipelines, big data).
• Familiarity with build tools (Maven/Gradle) and version control (Git).
• Strong problem-solving skills and Bangalore location availability.
• Excellent communication skills for cross-team collaboration.

Good to Have

• Experience with Snowflake for cloud data warehousing.
• Knowledge of DBT (Data Build Tool) for analytics engineering.
• Python scripting for data manipulation and automation.
• Exposure to AWS/GCP/Azure cloud platforms.
• Familiarity with Kafka, Airflow, or containerization (Docker/Kubernetes).

• Good design skills and exposure to multiple software architectures.
• Strong understanding of OO/ knowledge of frameworks such as Spring/ Spring Boot/ design and good software development practices.
• Strong core server-side technologies experience (Java). 
• Knowledge of Android is a huge plus.
• Strong database skills including schema design.
• Strong knowhow of data-structures and algorithms.
• Experience with configuration management, testing, deployment.
• Hands on development across technologies.

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

What You Will Do

● Create beautiful software experiences for our clients using design thinking, and lean and agile methodology.

● Work on world-class software products using the latest cutting-edge technologies and platforms.

● Work in a dynamic, collaborative, transparent, non-hierarchical culture.

● Work in collaborative, fast-paced, and value-driven teams to build innovative customer experiences for our clients.

● Help to grow the next generation of developers and positively impact the industry.

Basic Qualifications

● Experience: 5+ years

● Hands-on development experience in backend, Java, SpringBoot, Hibernate, SQL, MongoDB, Jenkins, Microservices, etc.

● Server-side development experience mainly in JAVA.

● Passion for software engineering and following the best coding concepts.

● Good to great problem-solving and communication skills.

● Experience in working with cross-border, distributed teams is a must. Nice to have Qualifications ● Product and customer-centric mindset

● Great OO skills, including design patterns.

● Experience with large-scale enterprise systems Get to know us better: https://www.zemosolabs.com.

Fusion Softtech is one of the best offshore development companies based in Ahmedabad, India. We are a bunch of tech-savvy individuals who together as a teamwork to have great expertise in the latest technologies and developments so as to be able to cater the best of the services in the domain of Technology.

We, ensure being the hard core Technoids that our clients around the globe are given the best of our facilities through advancements in technologies which would actually help to make their lives a better place. What we do? We are specialized in creating user-friendly web-designs and applications with a primary goal to be simple and effective for use. We work hand-in-hand with your visions and goals to optimize your business/product. We provide you an end-to-end solution.

• Lead a team, handle client, conduct technical interview, and provide training to new joiners.
• Design, implement, and maintain web application phases.
• Conduct software analysis, programming, testing, and debugging
• Identifying production and non-production application issues
• Transforming requirements into stipulations.
• Should have knowledge of Data structures
• Develop, test, implement and maintain application software
• Recommend changes to improve established software application processes
• Ability to develop logical and high-quality code which meets functional specifications along with technical requirements for reusability, maintainability and scalability when appropriate application code for java programs.
• Ability to perform technical analysis based on requirements to establish architecture approach and create detailed design in support of the requirements.
• Excellent written and verbal communication skills, worked for foreign client would be an added advantage.

Technical Skills:
OOPS, Java, J2EE, Spring MVC, Spring Boot , Spring security and Spring Batch SOAP, REST API, Logging Framework, Hibernate, XML, JEE (Servlets/JSP/JMS), web services experience, microservices, AWS, Kubernetes, ELK Stack, Multithreading, GIT

Key Skills and Experience:

• Min 5+ years of experience in the JAVA/J2EE.
• Experience with RESTFUL Web services.
• Experience in portal & web content management
• Hands-on experience on Javascript frameworks Alloy UI and JQuery.
• Hands-on experience in software development using J2EE Frameworks Spring, Spring Boot, Struts, Hibernate.
• Basic knowledge of Javascript, HTML5, and CSS3.
• Good to have experience or Knowledge in AngularJS, ReactJS, different AWS services like S3, EC2, DynamoDB, Lambda function.
• Exposure in any of the Databases -MySQL/Postgres/Oracle/DB2 etc.

Perks and Benefits:

• Flexible working hours.
• 5 days working
• Fun loving environment with ample scope for flexibility.
• Exposure to work for foreign clients
• Employee friendly leave & Company Policies.
• Best working culture

Primary responsibilities:

• Architect, Design and Build high performance Search systems for personalization, optimization, and targeting
• Designing systems with Solr, Akka, Cassandra, Kafka
• Algorithmic development with primary focus Machine Learning
• Working with rapid and innovative development methodologies like: Kanban, Continuous Integration and Daily deployments
• Participation in design and code reviews and recommend improvements
• Unit testing with JUnit, Performance testing and tuning
• Coordination with internal and external teams
• Mentoring junior engineers
• Participate in Product roadmap and Prioritization discussions and decisions
• Evangelize the solution with Professional services and Customer Success teams

Minimum requirements:

• Tech/M.Tech in computer Engineering or related fields or MCA
• At least 10-14 years of software development experience
• Expert in Java, Scala or any other object oriented language
• Proficient in SQL concepts (HiveQL or Postgres a plus)
• Additional language skills for scripting and rapid application development

Desired skills and experience:

• Working with large data sets in the PBs
• Familiarity with UNIX (systems skills a plus)
• Working experience in Solr, Cassandra, and Kafka
• Working in a distributed environment and has dealt with challenges around scaling and performance
• Working with distributed teams across multiple locations