
Job Description:
• Experience in Core Java, Spring Boot.
• Experience in microservices.
• Extensive experience in developing enterprise-scale systems for global organization. Should possess good architectural knowledge and be aware of enterprise application design patterns.
• Should be able to analyze, design, develop and test complex, low-latency client-facing applications.
• Good development experience with RDBMS in SQL Server, Postgres, Oracle or DB2
• Good knowledge of multi-threading
• Basic working knowledge of Unix/Linux
• Excellent problem solving and coding skills in Java
• Strong interpersonal, communication and analytical skills.
• Should be able to express their design ideas and thoughts.

About Wissen Technology
About
The Wissen Group was founded in the year 2000. Wissen Technology, a part of Wissen Group, was established in the year 2015. Wissen Technology is a specialized technology company that delivers high-end consulting for organizations in the Banking & Finance, Telecom, and Healthcare domains.
With offices in US, India, UK, Australia, Mexico, and Canada, we offer an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation.
Leveraging our multi-site operations in the USA and India and availability of world-class infrastructure, we offer a combination of on-site, off-site and offshore service models. Our technical competencies, proactive management approach, proven methodologies, committed support and the ability to quickly react to urgent needs make us a valued partner for any kind of Digital Enablement Services, Managed Services, or Business Services.
We believe that the technology and thought leadership that we command in the industry is the direct result of the kind of people we have been able to attract, to form this organization (you are one of them!).
Our workforce consists of 1000+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like MIT, Wharton, IITs, IIMs, and BITS and with rich work experience in some of the biggest companies in the world.
Wissen Technology has been certified as a Great Place to Work®. The technology and thought leadership that the company commands in the industry is the direct result of the kind of people Wissen has been able to attract. Wissen is committed to providing them the best possible opportunities and careers, which extends to providing the best possible experience and value to our clients.
Connect with the team
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Work Mode: Full-time, in-person
Reporting To: VP – Software
Job Description
We are looking for a hands-on Technical Lead Engineer to lead the design, development, and delivery of our Head-End System (HES), Meter Data Management (MDM), and Smart Metering platform. The role requires strong backend engineering expertise, deep understanding of smart metering and utility systems, and the ability to guide a development team through architecture, implementation, integration, testing, deployment, and production support.
The ideal candidate will have practical experience building scalable IoT or utility platforms involving smart meter communication, DLMS/COSEM protocols, real-time data acquisition, validation, event processing, command execution, and integration with enterprise systems such as billing, NMS, OMS, and analytics platforms.
Key Responsibilities
- Lead end-to-end technical development of HES, MDM, AMI/AMR, and smart metering modules.
- Design scalable backend architecture for meter communication, data ingestion, validation, processing, storage, and reporting.
- Implement and guide development of DLMS/COSEM IEC 62056 based meter communication.
- Integrate with smart meters, DCUs/gateways, billing systems, NMS, OMS, analytics systems, and third-party utility platforms.
- Lead Java/Spring Boot backend development using REST APIs, messaging queues, socket programming, and distributed system patterns.
- Design high-volume data pipelines for interval data, events, alarms, billing reads, and meter health data.
- Ensure performance, scalability, fault tolerance, database optimization, and reliable production operations.
- Mentor developers, review code, define engineering standards, and guide sprint-level technical execution.
- Work with product, project, QA, deployment, and customer teams to convert utility requirements into robust technical solutions.
- Own technical troubleshooting for production issues, performance bottlenecks, device communication failures, and integration defects.
- Prepare technical documentation, architecture diagrams, API specifications, and deployment guidelines.
Required Skills
- 6+ years of software development experience, including 3+ years in smart metering, HES, MDM, AMI, IoT, or utility platforms.
- Strong hands-on experience with Java, Spring Boot, REST APIs, JDBC/JPA, multithreading, backend system design, debugging, performance tuning, and production support.
- Practical experience with DLMS/COSEM, IEC 62056, Gurux or similar frameworks, smart meter communication, meter reads, events, commands, and remote operations.
- Strong understanding of communication protocols such as TCP/IP, socket programming, FTP/SFTP, MQTT/HTTP, and related integration patterns.
- Experience with Kafka/RabbitMQ, MySQL/MariaDB, MongoDB, Redis, ClickHouse, Apache Solr, or similar messaging and data platforms.
- Knowledge of scalable architecture, including clustering, replication, load balancing, caching, retries, failover, monitoring, and large-scale time-series data handling.
- Experience leading backend engineering teams, owning technical delivery, reviewing code, and mentoring developers.
- Preferred: experience with utility/DISCOM projects, AMISP programs, billing engines, prepaid metering, NMS/OMS, energy accounting, cloud services, CI/CD, Docker/Kubernetes, observability, and cybersecurity for smart metering systems.
Education Requirement
Bachelor’s degree in Computer Science, IT, Electronics & Communication, Electrical Engineering, or a related engineering discipline is preferred. Candidates with strong hands-on HES/MDM, AMI, DLMS/COSEM, IoT, or utility software experience may be considered even with a different academic background.
Role : Java Developer (2-7 years)
Location : Bangalore
Key responsibilities
- Develop and maintain high-quality, efficient, and scalable backend applications.
- Participate in all phases of the software development lifecycle (SDLC)
- Write clean, well-documented, and testable code adhering to best practices.
- Collaborate with team members to ensure the successful delivery of projects.
- Debug and troubleshoot complex technical problems.
- Identify and implement performance optimizations.
- Participate in code reviews
- Hands-on experience with Spring boot, Java 8 and above.
- 2-7 years of experience developing Java applications.
- Knowledge about at least one messaging system like Kafka, RabbitMQ etc.
- Required React developer requirements, qualifications & skills:
- Proficiency in React.js and its core principles
- Strong JavaScript, HTML5, and CSS3 skills
- Experience with popular React.js workflows (such as Redux)
- Strong understanding of object-oriented programming (OOP) principles.
- Experience with design patterns and best practices for Java development.
- Proficient in unit testing frameworks (e.g., JUnit).
- Experience with build automation tools (e.g., Maven, Gradle).
- Experience with version control systems (e.g., Git).
- Experience with one of these databases – Postgres, MongoDb, Cassandra
- Knowledge on Retail or OMS is a plus.
- Experienced in containerized deployments using Docker, Kubernetes and DevOps mindset
- Ability to reverse engineer existing/legacy and document findings on confluence.
- Create automated tests for unit, integration, regression, performance, and functional testing, to meet established expectations and acceptance criteria.
Dear Candidate,
We are urgently Hiring Java Full stack developers with React for Bangalore Location.
Position: Java FS with React
Location: Bangalore, Hyderabad
Experience: 8-11 yrs
Skills: J2EE/Core java , React
Salary: Best in Industry (20-25% Hike on the current ctc)
Note:
only Immediate to 15 days Joiners will be preferred.
Candidates from Tier 1 companies will only be shortlisted and selected
Candidates' NP more than 30 days will get rejected while screening.
Offer shoppers will be rejected.
Best Regards,
Minakshi Soni
Executive - Talent Acquisition (L2)
Rigel Networks
Worldwide Locations: USA | HK | IN
Here is the Job Description. Kindly go through that and let me know your thoughts.
Experience –
3+ years in relevant technologies
Job Description :
- Ability to solve complex problems using innovative solutions and actively coding and developing Java/J2EE based web applications.
- Should be excellent in debugging code & fixes bugs in optimized manner and minimal time.
- Writing of fully optimized code for optimum performance and efficiency of application.
- Adhere to the coding standards and guidelines.
- Should be very strong in Object-Oriented programming and design patterns.
- Provide Support over email and phone whenever required.
- Excellent Communication Skills - both written and spoken English is a must
Skills :
- Strong knowledge of Core Java Development, Servlets, Spring
- Expertise in accomplishing projects using Multithreading, OOPS, Concurrent API, Algorithms, design patterns, Collections
- Excellent debugging skills
- Experience with svn tools like bitbucket, GitHub
- Working knowledge of Unix commands
- Must be acquainted with deployment process along-with good exposure of servers like tomcat, webserver
Optional Skills :
- Knowledge of Nested Virtualization
- Experience working with Selenium, Artificial Intelligence & Computer Vision
Experience • 1-3 years
Skill to Test
• Java EE (Servlets, JSTL, JSP, JDBC)
• ReactJS
Primary Skills
• Java EE (Servlets, JSTL, JSP, JDBC)
• Frontend frameworks (ReactJS and/or Angular)
• Pure JavaScript, jQuery
• Bootstrap, HTML5, CSS, SASS
Secondary Skills (nice to have)
• Passionate about implementing UX\UI of web applications
• Microsoft SQL Server (writing optimized queries, stored procedures, triggers etc.)
• API Design (REST, JAX-RS)
• Understanding Apache Tomcat configuration and deployment of web applications
• Understanding of browser technologies and limitations
• Authentication and Authorization (SAML, OAuth, OpenID, Okta)
2
Soft Skills
• Thrives collaborating in a team environment with a diverse range of people
• Passionate about delivering an amazing customer experience
• Able to have a change of mind, and able to change the minds of others
• Writes clearly and concisely
• Capable of working without a company office, with a fully remote team
Growth Skills
• Possesses a good work ethic; a self-starter with a desire to grow
• Always looking for better ways to get the job done
Roles and Responsibilities
- Develop, test, implement and maintain application software
- Take part in software and architectural development activities
- Conduct software analysis, programming, testing and debugging
- Identifying production and non-production application issues
- Ensure designs are in compliance with specifications.
- Recommend changes to improve established java application processes
- Develop modular and testable unit of code
- Collaborates with other members of the software development team
- Works well independently and has solid time management, prioritization, and organization skills.
Key Skills and Experience
- Knows core Java skills and is familiar with Java build tools like Mavan etc, EE components, testing tools, JAVA Object Oriented Programming
- Experience in the Spring, Spring Boot, and Hibernate, Maven build tool
- Excellent knowledge of Relational Databases, SQL, MySQL and ORM technologies (JPA2, Hibernate).
- Knowledge of developing REST API.
- Experience with test-driven development.
- Identifying risk and conducting mitigation action planning.
- Results oriented and focused on meeting deliverable timelines.
- Good communication skills, Problem-solving attitude
- Ability to establish priorities
- Teamwork and willingness to listen to others
- Eagerness to learn new ideas, concepts, and technologies.
● Demonstrated experience as a software engineer, with at least 5-8 years’ experience
in technology roles
● Experience working on complex systems and cloud architectures, preferably in a B2B
or enterprise context
● Significant experience with the Java programming language and frameworks such as
Spring & SpringBoot
● Good working experience with front-end Javascript frameworks such as ReactJS
● Experience optimizing databases and SQL queries for high-performance
● Good knowledge of AWS services, design patterns and practices - ideally certified
● Experience and keen understanding of the value of working in agile teams
● A “quality-first” mindset, with experience working in continuous integration
environments
● Highly effective at communicating, and comfortable whiteboarding design ideas with
teams of engineers, product managers, and business analysts
● Desire to challenge the status quo and maturity to know when to compromise
● Respect for other team members and a highly collaborative approach to working and
learning together
- 4-8 years of relevant experience in designing & developing and architecting systems/software
- for large business environments (Java, J2EE).
- • Strong design and coding skills in Enterprise Java, Hibernate, Spring, Spring Boot, REST web
- services, JMS (ActiveMQ), XML, JSON.
- • Must have good experience in Unix/Oracle/SQL.
- • Experience in any communication framework (MQ) is an added advantage.
- • Experience in Agile Development, Scrum, and Iterative approaches
- • Participate in requirement gathering JAD sessions and support documentation
Hands on experience in designing and developing applications using Java EE platforms
Object Oriented analysis and design using common design patterns.
Profound insight of Java and JEE internals (Classloading, Memory Management, Transaction management etc)
Excellent knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate)
Experience in the Spring Framework
Experience in Spring boot micro services
Experience in front end technologies like Angular 9/10/11, Java script, html5, typescript
Experience in Java restful web services and SOAP webservices
Hands on experience in tools like Post man,Github, code quality analysis using SonarQube,Maven, Eclipse or Intellij
Experience with test-driven development
Ability to operate independently while establishing strong working relationships with co-workers and cross-functional teams;
Strong organizational and prioritization skills;
Demonstrate critical attention to detail and deadlines, and are self-motivated;
Ability to adapt to change in direction and priorities in a project and deadline-oriented environment
Problem-solving attitude
Experience of working in Agile methodology

● Design and develop software to support business practice management of current products based on the Java/Python/PHP/Node JS platforms
● Ensure design meets product requirements and structured to scale with business growth
● Ensure design comply to industry standards and interoperates with 3rd party software
● Conduct thorough design unit and integration testing with other software components
● Adhere to proper software design principles and processes with design documentations, reviews, test plans and release notes.
● Mentor/coach and guide other team members to achieve project deliverables
Skills & Competencies:
● Significant and demonstrable Java/Python/PHP/NodeJS development experience (server side).
● Significant and demonstrable experience of using Unix / Linux based Operating Systems including performing basic administrative tasks.
● Desirable experience of scripting languages e.g Ruby or Perl
● Significant and demonstrable experience of responsive websites
● Significant and demonstrable experience of integrating payment systems to websites
● Significant and demonstrable experience in any database system
● Sound problem solving skills and aptitude
● Sound communication skills and team working
● Experience of the following is highly desirable: memcache, Apache HTTPd server, Tomcat, Linux, HTTP, MySQL, PostgreSQL
● Experience in creating cloud based solutions (AWS, …)
● Experience in working with highly scalable solutions (load balancing, sharding, clustering)
● Good problem-solving skills
● Team player ● Good time-management skills
● Great interpersonal and communication skills
● Excellent documentation skills
● Proven ability to mentor, coach and guide team members.
● Proactive and take ownership of delivering best-in-class solutions that serve business outcomes.
Qualifications ● B.E/BS/Masters degree in Computer Science








