


💥 What will you do?
As a Lead Backend Engineer, you will
- Build out and help scale our Django (+ReactJS / VueJS) based web application as we add new features and customers
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Help us transition from monolithic system architecture to microservices and serverless system architecture to help meet our future scaling requirements
- Collaborate on a daily basis with a small, nimble team of product managers, engineers, and UX designers to understand business requirements and user experience goals and pain points.
- Build out features to enable multi-channel customer acquisition include partner channels, enterprise channels, and government channels
- Integrate third-party plugins to enhance customer experience and internal tooling build internal tooling to improve internal team efficiencies.
- Actively participate in code reviews
- Work with our quality assurance team to improve coverage on our automated testing suites
🙋 What are we looking for?
While we do not have a strict list of requirements for candidates interested in this role, some indicators that you would fit this role and our engineering culture are
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Prior experience of a few years (3+ years) with python based frameworks as Django or Flask would be essential to work on our application stack.
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You actively promote a culture of engineering excellence some of which could be writing efficient code, use of elegant design patterns, and styling your code through code-linting policies.
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You enjoy designing software architecture by collaborating with engineering managers, architects, and other lead engineers to explore existing systems, determining areas of complexity, potential risks to successful implementation.
- You enjoy coaching folks to achieve outcomes through nudges.
📢 Other information you may want to consider
- We will be flexible for the rest of the pandemic and work remotely; however, we are not a remote-first company, and the work location would be Bangalore when things settle.
- Our backend tech stack includes Django, FastAPI, Postgres, Redis, Clickhouse, and TigerGraph. Our environments are managed through Docker, Kubernetes, and Terraform.

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Job Description: Python Backend Developer
Experience: 7-12 years
Job Type: Full-time
Job Overview:
Wissen Technology is looking for a highly experienced Python Backend Developer with 7-12 years of experience to join our team. The ideal candidate will have deep expertise in backend development using Python, with a strong focus on Django and Flask frameworks.
Key Responsibilities:
- Develop and maintain robust backend services and APIs using Python, Django, and Flask.
- Design scalable and efficient database schemas, integrating with both relational and NoSQL databases.
- Collaborate with front-end developers and other team members to establish objectives and design functional, cohesive code.
- Optimize applications for maximum speed and scalability.
- Ensure security and data protection protocols are implemented effectively.
- Troubleshoot and debug applications to ensure a seamless user experience.
- Participate in code reviews, testing, and quality assurance processes.
Required Skills:
Python: Extensive experience in backend development using Python.
Django & Flask: Proficiency in Django and Flask frameworks.
Database Management: Strong knowledge of databases such as PostgreSQL, MySQL, and MongoDB.
API Development: Expertise in building and maintaining RESTful APIs.
Security: Understanding of security best practices and data protection measures.
Version Control: Experience with Git for collaboration and version control.
Problem-Solving: Strong analytical skills with a focus on writing clean, efficient code.
Communication: Excellent communication and teamwork skills.
Preferred Qualifications:
- Experience with cloud services like AWS, Azure, or GCP.
- Familiarity with Docker and containerization.
- Knowledge of CI/CD practices.
Why Join Wissen Technology?
- Opportunity to work on innovative projects with a cutting-edge technology stack.
- Competitive compensation and benefits package.
- A supportive environment that fosters professional growth and learning.


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Responsibilities:
- Contribute to the development and maintenance of our cloud management platform
- Collaborate with cross-functional teams to define, design, and deliver new features and functionality.
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- Stay up-to-date with the latest industry trends and technologies.
Requirements:
- A total of 2-4 years of professional experience in developing applications/platforms using Python programming
- Strong understanding of Object-Oriented Programming, SOLID principles and RDBMS.
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About koolio.ai
Website: www.koolio.ai
Koolio Inc. is a cutting-edge Silicon Valley startup dedicated to transforming how stories are told through audio. Our mission is to democratize audio content creation by empowering individuals and businesses to effortlessly produce high-quality, professional-grade content. Leveraging AI and intuitive web-based tools, koolio.ai enables creators to craft, edit, and distribute audio content—from storytelling to educational materials, brand marketing, and beyond. We are passionate about helping people and organizations share their voices, fostering creativity, collaboration, and engaging storytelling for a wide range of use cases.
About the Internship Position
We are looking for a motivated Backend Development Intern to join our innovative team. As an intern at koolio.ai, you’ll have the opportunity to work on a next-gen AI-powered platform and gain hands-on experience developing and optimizing backend systems that power our platform. This internship is ideal for students or recent graduates who are passionate about backend technologies and eager to learn in a dynamic, fast-paced startup environment.
Key Responsibilities:
- Assist in the development and maintenance of backend systems and APIs.
- Write reusable, testable, and efficient code to support scalable web applications.
- Work with cloud services and server-side technologies to manage data and optimize performance.
- Troubleshoot and debug existing backend systems, ensuring reliability and performance.
- Collaborate with cross-functional teams to integrate frontend features with backend logic.
Requirements and Skills:
- Education: Currently pursuing or recently completed a degree in Computer Science, Engineering, or a related field.
- Technical Skills:
- Good understanding of server-side technologies like Python
- Familiarity with REST APIs and database systems (e.g., MySQL, PostgreSQL, or NoSQL databases).
- Exposure to cloud platforms like AWS, Google Cloud, or Azure is a plus.
- Knowledge of version control systems such as Git.
- Soft Skills:
- Eagerness to learn and adapt in a fast-paced environment.
- Strong problem-solving and critical-thinking skills.
- Effective communication and teamwork capabilities.
- Other Skills: Familiarity with CI/CD pipelines and basic knowledge of containerization (e.g., Docker) is a bonus.
Why Join Us?
- Gain real-world experience working on a cutting-edge platform.
- Work alongside a talented and passionate team committed to innovation.
- Receive mentorship and guidance from industry experts.
- Opportunity to transition to a full-time role based on performance and company needs.
This internship is an excellent opportunity to kickstart your career in backend development, build critical skills, and contribute to a product that has a real-world impact.

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• 5+ years of experience improving the performance of Ruby on Rails applications with Memcached &
background job processing frameworks (Sidekiq, Resque etc.)
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deployment.


Card91 is simplifying business payments by providing a plug and play issuance infrastructure
to businesses for domestic and cross-border payments. Our full stack platform enables
businesses to gain control and visibility into their payment flows, controlling the entire payment
lifecycle from onboarding, to issuance, to transaction and data reconciliation. The platform
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execute faster
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● Knowledge of object-relational mapping (ORM)
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