Backend Developer - Python/Java/Performance Tuning

JOB DESCRIPTION

Experience: 3-5 years

Location: Bangalore

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. - 3-5 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.

Python Software Engineer (3–5 Years Experience)

Location: [Pune]

Role Overview

We are seeking skilled Python engineers to join our core product team. You will work on backend services, API development, and system integrations, contributing to a codebase of over 250,000 Python lines and collaborating with frontend, DevOps, and native code teams.

Key Responsibilities

·    Design, develop, and maintain scalable Python backend services and APIs

·    Optimize performance and reliability of large, distributed systems

·    Collaborate with frontend (JS/HTML/CSS) and native (C/C++/C#) teams

·    Write unit/integration tests and participate in code reviews

·    Troubleshoot production issues and implement robust solutions

Required Skills

·    3–5 years of professional Python development experience

·    Strong understanding of OOP, design patterns, and modular code structure

·    Experience with MongoDB (PyMongo), Mako, RESTful APIs, and asynchronous programming

·    Familiarity with code quality tools (flake8, pylint) and test frameworks (pytest, unittest)

·    Experience with Git and collaborative development workflows

·    Ability to read and refactor large, multi-module codebases

Nice to Have

·    Experience with web frameworks (web.py, Flask, Django)

·    Knowledge of C/C++ or C# for cross-platform integrations

·    Familiarity with CI/CD, Docker, and cloud deployment

·    Exposure to security, encryption, or enterprise SaaS products

What We Offer

·    Opportunity to work on a mission-critical, enterprise-scale product

·    Collaborative, growth-oriented engineering culture

·    Flexible work arrangements (remote/hybrid)

·    Competitive compensation and benefits

🚀 We're Hiring | Java Lead | Bangalore

Are you an experienced Java Lead passionate about building scalable, cloud-native enterprise applications? We're looking for a hands-on leader with strong expertise in Java, Spring Boot, Microservices, and modern backend technologies to drive high-impact development initiatives.

📍 Location: Bangalore

💼 Employment Type: Contract to Hire (C2H)

🧑‍💻 Experience: 8+ Years

Key Responsibilities

• Design, develop, and maintain high-performance Java-based applications using modern frameworks.
• Lead the development of scalable microservices and RESTful APIs.
• Collaborate with cross-functional teams to deliver robust, secure, and high-quality software solutions.
• Build and optimize backend services with Spring Boot, Spring MVC, and Spring Security.
• Develop efficient database solutions using SQL and ORM frameworks such as Hibernate/JPA.
• Integrate messaging systems like Kafka or RabbitMQ for event-driven applications.
• Participate in architecture discussions, code reviews, and technical mentoring.
• Implement CI/CD pipelines and containerized deployments using Docker, Kubernetes, and Jenkins.
• Ensure adherence to coding standards, best practices, and Agile methodologies.

Required Skills

• Strong hands-on experience with Java 8/11/17
• Expertise in Spring Boot, Spring MVC, and Spring Security
• Strong understanding of Microservices Architecture
• Experience in developing REST APIs
• Hands-on experience with Hibernate/JPA
• Strong SQL skills with MySQL, PostgreSQL, or Oracle
• Experience with Kafka or RabbitMQ
• Proficiency with Git, Maven, and Gradle
• Experience with Docker and Kubernetes
• Exposure to AWS, Azure, or GCP
• Experience with Jenkins and CI/CD pipelines
• Strong knowledge of design patterns and data structures

Preferred Skills

• Experience with Spring WebFlux and reactive programming
• Knowledge of MongoDB or other NoSQL databases
• Familiarity with Agile/Scrum methodologies
• Experience with JUnit and Mockito for unit testing

Educational Qualification

• Bachelor's degree in Computer Science, Information Technology, or a related field.

📩 Interested candidates, please share your updated resume.

What you will be doing

• Build and ship features in our Node.js (and now migrating to TypeScript) codebase that directly impact user experience and help move the top and bottom line of the business.
• Collaborate closely with our product, design and data team to build innovative features to deliver a world class product to our customers. At STAGE, product managers don’t “tell” what to build. In fact, we all collaborate on how to solve a problem for our customers and the business. Engineering plays a big part in it.
• Design scalable platforms that empower our product and marketing teams to rapidly experiment.
• Own the quality of our products by writing automated tests, reviewing code, making systems observable and resilient to failures.
• Drive code quality and pay down architectural debt by continuous analysis of our codebases and systems, and continuous refactoring.
• Architect our systems for faster iterations, releasability, scalability and high availability using practices like Domain Driven Design, Event Driven Architecture, Cloud Native Architecture and Observability.
• Set the engineering culture with the rest of the team by defining how we should work as a team, set standards for quality, and improve the speed of engineering execution.

The role could be ideal for you if you

• Experience of 4-6 years of working in backend engineering with at least 2 years of production experience in TypeScript, Express.js (or another popular framework like Nest.js) and MongoDB (or any popular database like MySQL, PostgreSQL, DynamoDB, etc.).
• Well versed with one or more architectures and design patterns such as MVC, Domain Driven Design, CQRS, Event Driven Architecture, Cloud Native Architecture, etc.
• Experienced in writing automated tests (especially integration tests) and Continuous Integration. At STAGE, engineers own quality and hence, writing automated tests is crucial to the role.
• Experience with managing production infrastructure using technologies like public cloud providers (AWS, GCP, Azure, etc.). Bonus: if you have experience in using Kubernetes.
• Experience in observability techniques like code instrumentation for metrics, tracing and logging.
• Care deeply about code quality, code reviews, software architecture (think about Object Oriented Programming, Clean Code, etc.), scalability and reliability. Bonus: if you have experience in this from your past roles.
• Understand the importance of shipping fast in a startup environment and constantly try to find ingenious ways to achieve the same.
• Collaborate well with everyone on the team. We communicate a lot and don’t hesitate to get quick feedback from other members on the team sooner than later.
• Can take ownership of goals and deliver them with high accountability.

Key Responsibilities:

- Customize and develop Odoo modules as per business requirements.

- Integrate Odoo with third-party systems and APIs.

- Analyze, troubleshoot, and debug issues in existing modules.

- Create and maintain technical documentation.

- Migrate data and Odoo versions as needed.

- Collaborate with cross-functional teams (functional consultants, QA, UI/UX).

- Optimize performance and scalability of the Odoo platform.

Required Skills:

- Strong understanding of Python and Odoo framework.

- Proficiency in PostgreSQL, XML, JavaScript, QWeb and OWL.

- Experience with Odoo's core modules (Sales, Purchase, Inventory, Accounting, etc.).

- Familiarity with Odoo Studio and Odoo.sh is a plus.

Job DescriptionWe are seeking an experienced HubSpot CRM Developer to join our team. The ideal candidate will have a strong background in HubSpot development, integrations, and dashboard creation while working with cross-functional teams to optimize CRM functionality.

Key Responsibilities:●    Develop, customize, and optimize HubSpot CRM to meet business needs.

●    Integrate HubSpot with other technologies and external business intelligence tools like Power BI and Tableau.

●    Build and maintain dashboards and reports to support marketing, sales, operations, and finance teams.

●    Work with backend technologies (PHP, Python, Node.js, etc.) to implement integrations and automation.

●    High proficiency in JavaScript.

●    Develop and maintain scripts in any suitable scripting language to support CRM functionality.

●    Ensure seamless data flow and synchronization between HubSpot and external platforms.

●    Collaborate with multiple teams to understand data requirements and optimize CRM processes.

Requirements:●     7-10 years of relevant experience in HubSpot development and integration.

●    Strong expertise in backend development using any  PHP, Python, or Node.js.

●    High proficiency in JavaScript and any scripting languages.

●    Experience in HubSpot API integration with other platforms.

●    Proficiency in dashboard and reporting tools like Power BI and Tableau.

●    Ability to work independently (IC role) while collaborating with cross-functional teams.

●    Must have experience in handling end-to-end projects from scratch.

●    Exposure to multiple industries/domains is preferred (not limited to a single company for 5-10 years).

Job ID : LK0601

Java Developer JD;

•  2-7 years of Experience 
• Java 8
• Spring boot
• API development
• MVC architecture
• web services
• OOPS

Job Description:

• Code and test programming for software and mobile apps.
• Develop and deploy computer applications.
• Execute code builds to test and production environments.
• Fix bugs in existing code.
• Collaborate with product, design, and marketing teams.
• Creating top-quality applications.
• Collaborating with front-end developers.
• Ensuring that junior staff delivers according to standards.
• Improving functionality.
• Using the most updated and appropriate technologies.
• Designing and building application layers.

Sills required:

           .Net, Java & SQL Database