Sr. Java Developer

Job Title : Java Backend Developer

Experience : 3 – 8 Years

Location : Pune (Onsite) (Pune candidates Only)

Notice Period : Immediate to 15 Days (or serving NP whose LWD is near)

About the Role :

We are seeking an experienced Java Backend Developer with strong hands-on skills in backend microservices development, API design, cloud platforms, observability, and CI/CD.

The ideal candidate will contribute to building scalable, secure, and reliable applications while working closely with cross-functional teams.

Mandatory Skills : Java 8 / Java 17, Spring Boot 3.x, REST APIs, Hibernate / JPA, MySQL, MongoDB, Prometheus / Grafana / Spring Actuators, AWS, Docker, Jenkins / GitHub Actions, GitHub, Windows 7 / Linux.

Key Responsibilities :

• Design, develop, and maintain backend microservices and REST APIs
• Implement data persistence using relational and NoSQL databases
• Ensure performance, scalability, and security of backend systems
• Integrate observability and monitoring tools for production environments
• Work within CI/CD pipelines and containerized deployments
• Collaborate with DevOps, QA, and product teams for feature delivery
• Troubleshoot, optimize, and improve existing modules and services

Mandatory Skills :

• Languages & Frameworks : Java 8, Java 17, Spring Boot 3.x, REST APIs, Hibernate, JPA
• Databases : MySQL, MongoDB
• Observability : Prometheus, Grafana, Spring Actuators
• Cloud Technologies : AWS
• Containerization Tools : Docker
• CI/CD Tools : Jenkins, GitHub Actions
• Version Control : GitHub
• Operating Systems : Windows 7, Linux

Nice to Have :

• Strong analytical and debugging abilities
• Experience working in Agile/Scrum environments
• Good communication and collaborative skills

We have an immediate requirement for a Java Developer role in the Pune location. Please find the details below:

Role: Java Developer

Experience: 3–4 Years (Mandatory)

Location: Pune

Joining: Immediate joiners only

Key Responsibilities:

• Develop and maintain scalable and robust J2EE applications
• Follow and implement coding standards within the project
• Integrate with third-party APIs and services
• Work in an Agile environment to design and implement new features
• Support team members in resolving technical issues
• Debug and resolve production issues (code/infrastructure)
• Communicate effectively with team members and product management

Mandatory Skills:

• Strong knowledge of Java and JEE internals (Class Loading, Memory Management, Transaction Management, etc.)
• Expertise in OOPs/OOAD concepts and design patterns
• Hands-on experience with Spring Framework and Web Services
• Basic knowledge of JavaScript, jQuery, AJAX, and DOM
• Good understanding of SQL, relational databases, and ORM (Hibernate/DAO)
• Strong problem-solving skills and communication abilities

Important Note:

• Interview is scheduled for Monday
• Selected candidates are expected to join by Tuesday or Wednesday

About Us:

REConnect Energy’s GRIDConnect platform helps integrate and manage energy generation and consumption for 1000s of renewable energy assets and grid operators. We are currently serving customers across India, Bhutan and the Middle East with expansion planned in US and European markets.

We are headquartered in Central Bangalore with a team of 150+ and growing. You will join the Bangalore based Engineering team as a senior member and work at the intersection of Energy, Weather & Climate Sciences and AI. 

Responsibilities:

● Engineering - Take complete ownership of engineering stacks. Define and maintain software systems architecture for high availability 24x7 systems.

● Leadership - Lead a team of engineers and analysts managing engineering development as well as round the clock service delivery. Provide mentorship and technical guidance to team members and contribute towards their professional growth. Manage weekly and monthly reviews with team members and senior management.

● Product Development - Contribute towards new product development through engineering solutions to product requirements. Interact with cross-functional teams to bring forward a technology perspective.

● Operations - Manage delivery of critical services to power utilities with expectations of zero downtime. Take ownership for uninterrupted product uptime. 

Requirements:

● Bachelor's or Master’s degree in Computer Science, Software Engineering, Electrical Engineering or equivalent

● Proficient in python programming along with Frameworks like Django/Fast Api/Flask and Java frameworks like Spring, Hibernate, SpringBoot, etc

● Debug and resolve technical issues that arise during the development or after deployment at various stages.

● Experience in databases including MySQL and NoSQL

● Experience in designing, developing and maintaining high availability systems.

● Experience in MVC pattern, Tomcat, Git, and Jira.

● Experience working with AWS cloud platform.

● 4-5 years of experience building highly available systems

● 2-3 years experience leading a team of engineers and analysts

● Strong analytical and data driven approach to problem solving

Wissen Technology is hiring for Java Tech lead

Required:

• 8-10 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

Job Title: Java Developer (Low Latency)

Location: Bangalore 

Experience: 7 to 11 Years

Work Location: Cessna Business Park, Wissen office, Bangalore

Work from office in a Hybrid mode (Thrice a week)

Notice Period: Immediate candidates who could join us within 30 days. (Should be serving Notice period - Mandatory)

Required Skills: 

8+ years of hands-on experience in Core Java (8 or above).

Strong experience in low latency system development and performance tuning.

Proficiency in multithreading, concurrency, and memory management (GC tuning).

Solid understanding of data structures, algorithms, and design patterns.

Experience with messaging systems (Kafka, RabbitMQ, etc.) and distributed systems.

Familiarity with microservices architecture, REST APIs, and Spring Boot.

Experience in trading or risk systems is required.

Exposure to FX or equity trading applications would be a big plus.

Job Title: Senior Software Engineer

Location:PUNE

Job Type: Full-time

About the Role:

We are seeking a Senior Software Engineer with at least 1 year of experience in ad tech (preferred) to join our dynamic team. The ideal candidate will have strong proficiency in Java and possess problem-solving skills to design, develop, and maintain scalable software solutions in the ad tech industry.

Key Responsibilities:

• Develop and maintain high-quality Java-based applications.
• Collaborate with cross-functional teams to design and implement new features.
• Troubleshoot and debug issues, ensuring optimal software performance.
• Write clean, scalable, and efficient code while adhering to best practices.
• Participate in code reviews and provide mentorship to junior engineers.

Requirements:

• Proven experience with Java and software development.
• At least 1 year of experience in ad tech (preferred).
• Strong understanding of object-oriented design and data structures.
• Excellent communication and collaboration skills.
• Ability to work independently and manage time effectively.