Backend Java (Microservices / Spring Boot) Developer

JOB DESCRIPTION

Experience: 3-8 years

Wissen Technology is now hiring for a Java Developer - Mumbai 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.

Job Title: Java Developer

Location: Mumbai

Job Type: Full-Time 

Experience Level: 4- 8 years

Job Overview:

We are looking for a highly skilled Java Developer to join our development team. As a Java Developer, you will be responsible for designing, developing, and maintaining robust Java applications that meet high standards of performance and reliability. The ideal candidate will have strong analytical skills, excellent problem-solving capabilities, and a deep understanding of Java and its ecosystem.

Key Responsibilities:

• Design, develop, and maintain reliable Java applications.
• Collaborate with cross-functional teams to analyze requirements and translate them into technical solutions.
• Write clean, efficient, and scalable code.
• Develop and integrate APIs and web services.
• Conduct software analysis, testing, and debugging.
• Optimize application performance, scalability, and security.
• Participate in code reviews and contribute to best practices.

Required Skills:

• Proficiency in Java and Java EE (Enterprise Edition).
• Strong understanding of Object-Oriented Programming (OOP) concepts.
• Experience with Spring Framework (Spring Boot, Spring MVC) and Hibernate.
• Familiarity with RESTful API design and development.
• Knowledge of SQL and database management systems like MySQL, PostgreSQL, or Oracle.
• Experience with version control systems like Git.
• Familiarity with build tools like Maven or Gradle.
• Solid understanding of application security, data protection, and performance optimization.

Position Overview

We are seeking a skilled Developer to join our engineering team. The ideal candidate will have strong expertise in Java and Python ecosystems, with hands-on experience in modern web technologies, messaging systems, and cloud-native development using Kubernetes.

Key Responsibilities

• Design, develop, and maintain scalable applications using Java and Spring Boot framework
• Build robust web services and APIs using Python and Flask framework
• Implement event-driven architectures using NATS messaging server
• Deploy, manage, and optimize applications in Kubernetes environments
• Develop microservices following best practices and design patterns
• Collaborate with cross-functional teams to deliver high-quality software solutions
• Write clean, maintainable code with comprehensive documentation
• Participate in code reviews and contribute to technical architecture decisions
• Troubleshoot and optimize application performance in containerized environments
• Implement CI/CD pipelines and follow DevOps best practices
•  
• Required Qualifications
• Bachelor's degree in Computer Science, Information Technology, or related field
• 4+ years of experience in software development
• Strong proficiency in Java with deep understanding of web technology stack
• Hands-on experience developing applications with Spring Boot framework
• Solid understanding of Python programming language with practical Flask framework experience
• Working knowledge of NATS server for messaging and streaming data
• Experience deploying and managing applications in Kubernetes
• Understanding of microservices architecture and RESTful API design
• Familiarity with containerization technologies (Docker)
• Experience with version control systems (Git)
•  
• Skills & Competencies
• Skills Java (Spring Boot, Spring Cloud, Spring Security)
•  
• Python (Flask, SQL Alchemy, REST APIs)
• NATS messaging patterns (pub/sub, request/reply, queue groups)
• Kubernetes (deployments, services, ingress, ConfigMaps, Secrets)
• Web technologies (HTTP, REST, WebSocket, gRPC)
• Container orchestration and management
• Soft Skills Problem-solving and analytical thinking
• Strong communication and collaboration
• Self-motivated with ability to work independently
• Attention to detail and code quality
• Continuous learning mindset
• Team player with mentoring capabilities

Job Description / Roles & Responsibilities (in Detail)Job Description

Work with Architect to define Application, Integration and Security Design for various components involved.

Design, development and build of java solution components/modules and integrations

Hands on knowledge in technology areas like Core Java, Java 8, Web services (SOAP and REST), Spring boot, Spring Frameworks, Spring Data JPA, REST/SOAP services, Spring cloud, Spring MVC, JSON & XML based processing. Strong command on Java/J2EE & OOPs concepts and current industry trends. Working knowledge of Java 8, 11 new features.

Working knowledge of cloud based server less application development on any of cloud platforms like AWS/Azure/GCP. Candidate with experience in Cloud native application development experience will be preferred.

Working knowledge in any of the databases like Mongo DB/Oracle/MySQL/SQL Server.

Working knowledge in any of messaging platforms like Apache Kafka/Rabbit MQ/JMS/AWS SQS/Azure Event Hub/Service Bus.

Production implementation experience for large enterprise applications using Java/J2EE will be preferred.

Experience in implementing Web services Security using WS-Security, SAML, OAUTH2, Kerberos and integrating with Identity providers, LDAP and ADFS. Experience working with credential vaults will be add-on.

Strong knowledge on design and integration patterns especially in applications involving Portals/SSO, legacy applications, B2B Applications, external partners using enterprise service bus.

Well versed with ensuring coding standards, DevOps CICD implementations, version management, branching strategy, security principles.

Ensure code quality and standards are followed. Experience in test automation is plus.

Up-to-date technical knowledge by attending educational workshops, reviewing publications

Who We are?

At e6data (https://e6x.io/" target="_blank">https://e6data.io) we’re building core algorithms that make querying 25 - 200X more performant (i.e. faster and/or cheaper) than every other analytics platform in the world. This results in billions of dollars of value unlocked across faster analytics, savings on computing/infra, and new use cases become possible.

Our core team has 100+ years of combined experience and 10+ patents across diverse but complementary disciplines like real-time databases, time-series databases, SQL OLAP engines, distributed computing platforms, stream processing, and log analytics. Two of the founding team are second-time founders with past exits.

We are passionate about solving the deepest and most important problems in computer science and believe in making our technology available to customers regardless of their location, size, or budget. Our vision is for e6data to power every analytical workload in the world - regardless of deployment scenario (cloud, on-premise, edge), across every use case (end-user queries, ETL / data pipelines), and every latency requirement (batch, streaming / real-time).

What you will do?

• Write awesome code
• Your primary focus will be on building our product around our core algorithms. You will collaborate with our Performance Engineering and DevOps teams.
• Identify tactical and long-term product improvements (could be code, script, etc.) so that e6data development is based on frictionless onboarding of customers
• Build our internal Data Platform using e6data
• Adding scalable functionality to the core e6data engine for new features like UDFs, SQL functions, etc

What we are looking for?

• Worked with Java for a minimum of 4 years
• Knowledge of SQL Query planning will also be good to have
• A passion for continuous learning and growth (both at a personal and team level)
• Strong team player
• Experience (or enjoys) working in a startup will be an added advantag

You Will:

• Lead, coach and mentor a team of 8-10 engineers so they all learn, grow, and succeed.
• Plan and prioritize work for your team, including collaborating with cross border teams.
• Provide oversight and accountability for technical decisions.
• Create an inclusive environment that attracts and retains high-performing engineers.
• You will collaborate with Developers, Program Managers, QA and Devops Engineers in an agile development environment.
• Constantly learn and grow as an engineer and an engineering leader.
• Demonstrate a passion for customers and technology.


You must have:

• Experience in the design, development, and deployment of large-scale enterprise applications with multiple tiers
• Exposure on agile test-driven development for robustness, usability, reliability, security and performance.
• Strong technical aptitude for any programming language, preferred, Core JAVA and Spring Boot and other Spring libraries, Eureka, Hystrix etc.
• Experience of creating architecture or developing web services using Open source technologies and to integrate applications with databases such as Oracle, MySQL, MongoDB, or Cassandra
• Solid understanding of OOPS, algorithms and data structures.
• Experience on Kafka / Scala / Storm / Elastic Search and Web Services like RESTful.
• Experience in building highly scalable distributed systems
• Extensive experience with version control systems (Git is preferred) and issue tracking systems (JIRA is preferred)

Big Pluses if you:

• Have a strong focus on business outcomes
• Are comfortable with collaboration, open communication and reaching across functional borders
• Are self-motivated and can get things done
• Have the ability to communicate and defend your ideas clearly
• Have a strong knowledge of threading, concurrency, scaling, and high availability.
• Have a desire to build products that users love

• Stay current with new and evolving technologies via formal training and self-directed education

Experience with Hibernate and Spring.

•   Experience with Spring-boot, spring MVC
• Experience with all phases of the Software Development Lifecycle, including system analysis, design, coding, testing, debugging and documentation
• Teamwork & collaboration skills to work across organizations
• Problem solving skills to develop quick yet sound solutions to resolve complex issues
• Programming Language(s): Java, J2EE, JSON, HTML, DHTML, HTML 5, XML, EXTJS.
• Experience with XML/HTTP and Web Services
• Experience with HTML, JSP, CSS, JQuery / Ajax / JSON,
•     Experience /Knowledge of Angular, React.
• Experience building J2EE based Web Applications
• Experience with MySql.

Tech9 India is looking for a mid-senior software engineer who is an expert with Nodejs and MongoDB.  This is a great opportunity to work with a company that has a primary focus of making our customers happy by delivering value, without all the burdensome policies and rules that have become typical for outsourced software development companies.

If you are looking for a change this is what we can promise you:

• You will have challenging problems to solve
• You will have flexibility and autonomy to solve problems and deliver solutions
• We will provide a highly collaborative environment with skilled and super friendly teammates
• We will fully support you in developing software the right way
• We won't burden you with useless policies and procedures
• We will provide you the tools you need to do your job right

If this sounds attractive please apply! We'd love to talk to you!

Responsibilities:

• Work with cross-functional teams, using agile practices, write, debug and deliver code
• Produce solid, thoroughly tested features

Requirements:

• Mid level roles require at least 3 years of experience in Nodejs senior roles require at least 4 years of experience with Node.
• At least 3 years of experience developing in HTML and CSS
• Strong verbal and written communication skills
• Experience working with product managers and scrum teams to effectively translate business requirements into workflows 
• Demonstrated ability to remove problems and overcome roadblocks
• Cloud platform experience 
• Hands-on experience with APIs, microservices
• Multiple years of experience delivery solutions through an Agile delivery methodology
• Ability to understand complex systems and solve challenging analytical problems
• Ability to leverage multiple tools and programming languages to analyze and manipulate data sets from disparate data sources
• Strong problem solving skills and critical thinking ability