Lead Java Developer

Who We Are

At Sonatype, we help organizations build better, more secure software by enabling them to understand and control their software supply chains. Our products are trusted by thousands of engineering teams globally, providing critical insights into dependency health, license risk, and software security. We’re passionate about empowering developers—and we back it with data.

The Opportunity

We’re looking for a Data Engineer with full stack expertise to join our growing Data Platform team. This role blends data engineering, microservices, and full-stack development to deliver end-to-end services that power analytics, machine learning, and advanced search across Sonatype.

You will design and build data-driven microservices and workflows using Java, Python, and Spring Batch, implement frontends for data workflows, and deploy everything through CI/CD pipelines into AWS ECS/Fargate. You’ll also ensure services are monitorable, debuggable, and reliable at scale, while clearly documenting designs with Mermaid-based sequence and dataflow diagrams.

This is a hands-on engineering role for someone who thrives at the intersection of data systems, fullstack development, ML, and cloud-native platforms.

What You’ll Do

• Design, build, and maintain data pipelines, ETL/ELT workflows, and scalable microservices.
• Development of complex web scraping (Playwright) and realtime pipelines (Kafka/Queues/Flink).
• Develop end-to-end microservices with backend (Java 5+, Python 5+, Spring Batch 2+) and frontend (React or any).
• Deploy, publish, and operate services in AWS ECS/Fargate using CI/CD pipelines (Jenkins, GitOps).
• Architect and optimize data storage models in SQL (MySQL, PostgreSQL) and NoSQL stores.
• Implement web scraping and external data ingestion pipelines.
• Enable Databricks and PySpark-based workflows for large-scale analytics.
• Build advanced data search capabilities (fuzzy matching, vector similarity search, semantic retrieval).
• Apply ML techniques (scikit-learn, classification algorithms, predictive modeling) to data-driven solutions.
• Implement observability, debugging, monitoring, and alerting for deployed services.
• Create Mermaid sequence diagrams, flowcharts, and dataflow diagrams to document system architecture and workflows.
• Drive best practices in fullstack data service development, including architecture, testing, and documentation.

What We’re Looking For

• 5+ years of experience as a Data Engineer or a Software Backend engineering role.
• Strong programming skills in Python, Scala, or JavaHands-on experience with HBase or similar NoSQL columnar stores.
• Hands-on experience with distributed data systems like Spark, Kafka, or Flink.
• Proficient in writing complex SQL and optimizing queries for performance.
• Experience building and maintaining robust ETL/ELT pipelines in production.
• Familiarity with workflow orchestration tools (Airflow, Dagster, or similar).
• Understanding of data modeling techniques (star schema, dimensional modeling, etc.).
• Familiarity with CI/CD pipelines (Jenkins or similar).
• Ability to visualize and communicate architectures using Mermaid diagrams.

Bonus Points

• Experience working with Databricks, dbt, Terraform, or Kubernetes
• Familiarity with streaming data pipelines or real-time processing
• Exposure to data governance frameworks and tools
• Experience supporting data products or ML pipelines in production
• Strong understanding of data privacy, security, and compliance best practices

Why You’ll Love Working Here

• Data with purpose: Work on problems that directly impact how the world builds secure software
• Modern tooling: Leverage the best of open-source and cloud-native technologies
• Collaborative culture: Join a passionate team that values learning, autonomy, and impact

We’re looking for an experienced Engineering Manager with strong tech leadership and hands-on expertise in Java + Spring Boot.

What you’ll do:

• Lead high-performing engineering teams

• Drive architecture, system design & scalable backend solutions

• Balance 60% people management + 40% hands-on coding

• Own CI/CD, integrations & high-quality releases

What we need:

• 10+ yrs experience (3+ yrs in EM role)

• Strong in Java, Spring Boot, microservices & cloud

• Startup mindset, ownership & solid communication skills

📍 Location: Bengaluru (On-site)

Greetings!

Wissen Technology is hiring for Java developers/Lead.

Required Skillset

• 6+ years of industrial experience
• Java and related frameworks.
• Experience in Core Java 1.8 and above, Data Structures, OOPS, Multithreading, Microservices, Spring and Swift Payments
• Exposure on Fintech domain is mandatory
• Should have the ability to analyse, design, develop and test complex, low-latency client-facing applications.
• Good development experience with RDBMS
• Good knowledge of multi-threading and high volume server side development
• Excellent problem solving and coding skills in Java
• Strong interpersonal, communication and analytical skills.

Company Profile:

Company Name : Wissen Technology

Group of companies in India : Wissen Technology & Wissen Infotech

Work Location - Bangalore

Website : www.wissen.com

Wissen Thought leadership : https://www.wissen.com/articles/

LinkedIn: https://www.linkedin.com/company/wissen-technology

The ideal candidate should be a proactive individual with strong communication skills and a team player. He or she should have an experience of at least 1-2 years in Java development.

1. Hands on experience in designing and developing applications using Java EE platforms and at least 1-2 years’ experience on the same.
2. Should have excellent in-depth knowledge on Core Java
3. Experience in multi-threaded server-side Java programming
4. Working knowledge on web services.
5. Working knowledge on hibernate and springs framework.
6. Added advantage if worked in any of the BPM tools
7. Should have worked in SDLC environment.
8. Good communication skills.
9. Experience in working effectively within a team.

•  Exp : 3-15 years
• Java NMS/EMS  : Work location : GGN
• Experience in implementation of NMS/EMS applications and good understanding of FCAPS functionalities
• Proficient in Java/J2EE, SpringBoot, SpringCloud, Kafka and REST webservices
• Experience in implementation of micro-services based applications
• Experience in any of the rule engine like Drools and workflow creation like JBPM, Camunda
• Experience in SQL and NoSQL databases, DB schema designing and database accessing using Hibernate JPA 
• Experience with SNMP, Netconf, device management, inventory management
• Hands on experience in Wildfly/Jboss App server 
• Experience in dev-ops tools like Jenkins, Docker, Kubernetes
• Proficient in Angular, HTML5, CSS, Bootstrap, Typescript, ES6 
• Good to have Micro Frontend Architecture exposure
• Experience with tools like Maven, Ant, Git, Sonar, JaCoCo, Karma, Jasmine
• Scripting using Shell, Python, etc
• Must be involved in customer interactions for requirement gathering and solution designing discussions

JD for Java Developer Position (3-5 years)

Notice Period: 10-20 days or within 1 month

1. Excellent Java skills
2. Hands-on working experience with Spring, Hibernate, GIT, Jenkins
3. Strictly adhere to coding standards & unit testing
4. Excellent analytical skills and communication skills are a must
5. Knowledge of MySQL or any other DBMS

Added Advantage
1. ElasticSearch
2. AWS services like lambda, redis, graphql etc
3. Docker

• Mandatory skills: Spring boot, Hibernate, Microservice
• Strong Java skills including Java 8 features 
• Good understanding of Microservices-based architecture and the related ecosystem 
• Exposure to MS SQL Server, Sybase etc. and NoSQL databases like MongoDB is also preferred.
• Great OO skills, including strong design patterns knowledge 
• Strong knowledge of software best practices, like Test-Driven Development (TDD) and
• Continuous Integration (CI) 
• Strong Knowledge of Data Structures & Algorithms
• Experience in working with data-driven RESTful APIs using web frameworks like SpringBoot,etc. 
• Should be able to do data modeling
• Good understanding of ORMs like Hibernate, JPA, etc. 
• Strong debugging skills
• Familiarity with architectural/ design patterns
• Advanced knowledge of Agile methodology.

Please find the JD details below.

Tech Stack Expected: Java 8/11, Spring Boot,  Spring Cloud, JUnit/Mockito, MySQL, Kafka, Avro, git, Jenkins, PCF, DDD/BDD/TDD.

• We are looking for candidates with strong programming experience of more than 3 years and deep knowledge on data structure and algorithms.
• Need strong in Spring Cloud
• Strong experience in Microservices
• DS and Algorithms: looking for problem solving skills. Who can Optimize code
• PCF: Manage the pipeline by Developer. Dev need to own it.
• Fundamental knowledge on Docker and Kubernetes will be helpful. Know how on Scale up and down etc...
• Secure coding practices
• Nice to have Pair programming experience: