
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—easily. 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 Full-Time Position
We are seeking a Junior Backend Engineer (Fresher) to join our team on a full-time, hybrid basis. This role is ideal for motivated recent graduates eager to gain hands-on experience in backend development. Working closely with senior engineers, you’ll play a vital role in enhancing koolio.ai’s backend infrastructure, focusing on building, maintaining, and optimizing server-side applications and APIs. This is a unique opportunity to grow within an innovative environment that values creativity and technical excellence.
Key Responsibilities:
- Assist in developing and maintaining backend services and APIs, ensuring stability, scalability, and performance
- Collaborate with the frontend and QA teams to ensure seamless integration of backend systems with user-facing features
- Help troubleshoot and resolve backend issues, working alongside senior developers to enhance system reliability
- Participate in code reviews, learning best practices and contributing to maintaining high code quality standards
- Support in monitoring and improving backend performance metrics
- Document processes, code, and system architecture under guidance to ensure comprehensive, up-to-date technical resources
Requirements and Skills:
- Education: Degree in Computer Science or a related field
- Work Experience: No prior work experience required; internships or academic projects related to backend development are a plus
- Technical Skills:
- Basic understanding of backend systems and APIs
- Working experience in Python
- Familiarity with basic version control systems like Git
- Knowledge of databases (e.g., MySQL, MongoDB) and basic proficiency in SQL
- Understanding of cloud platforms or services like Google Cloud is an advantage
- Soft Skills:
- Eagerness to learn and apply new technologies in a fast-paced environment
- Strong analytical and problem-solving skills
- Excellent attention to detail and a proactive mindset
- Ability to communicate effectively and work in a collaborative, remote team
- Other Skills:
- Familiarity with basic DevOps practices or interest in learning is beneficial
Compensation and Benefits:
- Total Yearly Compensation: ₹4.5-6 LPA based on skills and experience
- Health Insurance: Comprehensive health coverage provided by the company
Why Join Us?
- Be a part of a passionate and visionary team at the forefront of audio content creation
- Work on an exciting, evolving product that is reshaping the way audio content is created and consumed
- Thrive in a fast-moving, self-learning startup environment that values innovation, adaptability, and continuous improvement
- Enjoy the flexibility of a full-time hybrid position with opportunities to grow professionally and expand your skills
- Collaborate with talented professionals from around the world, contributing to a product that has a real-world impact

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The requirements are as follows:
1) Familiar with the the Django REST API Framework.
2) Experience with the FAST API framework will be a plus
3) Strong grasp of basic python programming concepts ( We do ask a lot of questions on this on our interviews :) )
4) Experience with databases like MongoDB , Postgres , Elasticsearch , REDIS will be a plus
5) Experience with any ML library will be a plus.
6) Familiarity with using git , writing unit test cases for all code written and CI/CD concepts will be a plus as well.
7) Familiar with basic code patterns like MVC.
8) Grasp on basic data structures.
Job Title: Backend Engineer – Python (AI Backend)
Location: Bangalore, India
Experience: 1–2 Years
Job Description
We are looking for a Backend Engineer with strong Python skills and hands-on exposure to AI-based applications. The candidate will be responsible for developing scalable backend services and supporting AI-powered systems such as LLM integrations, AI agents, and RAG pipelines.
Key Responsibilities
- Develop and maintain backend services using Python (FastAPI preferred)
- Build and manage RESTful APIs for frontend and AI integrations
- Support development of AI-driven features (LLMs, RAG systems, AI agents)
- Design and maintain both monolithic and microservices architectures
- Optimize database performance and backend scalability
- Work with DevOps for Docker-based deployments
Required Skills
- Strong experience in Python backend development
- Hands-on experience with FastAPI / Django / Flask
- Knowledge of REST APIs and microservices
- Experience with AI applications (LLM usage, prompt engineering basics)
- Database knowledge: MongoDB, PostgreSQL or MySQL
- Experience with Docker and basic cloud platforms (AWS/GCP/Azure)
- Hands-on experience with Redis for caching and in-memory storage
Good to Have
- Experience integrating payment gateways (Razorpay, Stripe, PayU, etc.)
- Exposure to event-driven architectures using RabbitMQ, Kafka, or Redis Streams
- Kubernetes
- Understanding of model fine-tuning concepts
• Writing and testing code, debugging programs and integrating applications with third-party
web services. To be successful in this role, you should have experience using server-side logic
and work well in a team.
• Ultimately, you'll build highly responsive web applications that align with our business needs.
• Write effective, scalable code Develop back-end components to improve responsiveness and
overall performance Integrate user-facing elements into applications.
• Test and debug programs
• Improve functionality of existing systems Implement security and data protection solutions
• Assess and prioritize feature requests
• Coordinate with internal teams to understand user requirements and provide technical
solutions
• Expertise in at least one popular Python framework (like Django, Flask, etc)
• Team spirit
• Good problem-solving skills.
Requirements
• 3 to 5 years of experience as a Python Developer
• Hands-on experience with Flask, Django or Gin or Revel or Sanic
• Knowledge of design/architectural patterns will be considered as a plus
• Experience working in an agile development environment with a strong focus on rapid
software development
• Experience in AWS or similar cloud technologies
• Excellent troubleshooting and debugging skills
• Proven ability to complete the assigned task according to the outlined scope and timeline
• Experience with messaging frameworks such as SQS/Kafka/RabbitMq
• Experience with Elastic Search
• Willingness to learn new and different technologies
Location - South Delhi
JioTesseract, a digital arm of Reliance Industries, is India's leading and largest AR/VR organization with the mission to democratize mixed reality for India and the world. We make products at the cross of hardware, software, content and services with focus on making India the leader in spatial computing. We specialize in creating solutions in AR, VR and AI, with some of our notable products such as JioGlass, JioDive, 360 Streaming, Metaverse, AR/VR headsets for consumers and enterprise space.
About the Job
As a Cloud Backend Engineer you will design, develop, and maintain scalable and reliable backend systems in cloud environments. You will be responsible for building cloud-native applications, optimizing backend performance, and ensuring seamless integration with frontend services and third-party systems.
What You’ll Be Doing
- Backend Development
- Design and implement scalable and high-performance backend services and APIs for cloud-based applications.
- Develop microservices architectures and serverless functions to support business needs.
- Ensure backend systems are secure, reliable, and performant, adhering to best practices and industry standards.
- Cloud Infrastructure and Deployment
- Build and manage cloud infrastructure using platforms such as AWS, Google Cloud Platform (GCP), or Azure.
- Deploy and maintain backend services using cloud-native technologies (e.g., Kubernetes, Docker, AWS Lambda, Google Cloud Functions).
- Implement and manage CI/CD pipelines to automate deployment processes and ensure smooth delivery of updates.
- Performance Optimization
- Monitor and optimize the performance of backend services, including database queries, API responses, and system throughput.
- Implement caching strategies, load balancing, and other performance-enhancing techniques to ensure scalability and responsiveness.
- Troubleshoot and resolve performance issues and system bottlenecks.
- Database Management
- Design and manage relational and NoSQL databases, ensuring data integrity, scalability, and performance.
- Implement data access patterns and optimize queries for efficient data retrieval and storage.
- Ensure backup, recovery, and data security practices are in place.
- Integration and Collaboration
- Collaborate with frontend developers, DevOps engineers, and other stakeholders to integrate backend services with frontend applications and third-party systems.
- Participate in architectural discussions and provide input on system design and technology choices.
- Ensure clear communication and documentation of backend services, APIs, and system interactions.
- Security and Compliance
- Implement security best practices to protect backend services from threats and vulnerabilities.
- Ensure compliance with relevant regulations and standards, including data privacy and protection requirements.
- Conduct regular security assessments and vulnerability scans to maintain system integrity.
- Testing and Quality Assurance
- Develop and maintain automated tests for backend services, including unit tests, integration tests, and end-to-end tests.
- Perform code reviews and participate in quality assurance processes to ensure high code quality and reliability.
- Monitor and address issues identified during testing and production deployments.
- Documentation and Knowledge Sharing
- Document backend services, APIs, and infrastructure setups to facilitate knowledge sharing and support.
- Create and maintain technical documentation, including architecture diagrams, API specifications, and deployment guides.
- Share knowledge and best practices with team members and contribute to a collaborative development environment.
What We Need To See
- Strong experience in backend development, cloud technologies, and distributed systems, with a focus on building robust, high-performance solutions.
- Minimum 5 years of experience in backend development, with a strong focus on cloud-based applications.
- Proven experience with cloud platforms (AWS, GCP, Azure) and cloud-native technologies.
- Experience in designing and implementing RESTful APIs, microservices, and serverless architectures.
- Technical Expertise in:
1. Backend Development
- Strong experience with backend programming languages such as Node.js, Python
- Expertise in working with frameworks such as NestJS, Express.js, or Django.
2. Microservices Architecture
- Experience designing and implementing microservices architectures.
- Knowledge of service discovery, API gateways, and distributed tracing.
3. API Development
- Proficiency in designing, building, and maintaining RESTful and GraphQL APIs.
- Experience with API security, rate limiting, and authentication mechanisms (e.g., JWT, OAuth).
4. Database Management
- Strong knowledge of relational databases (e.g., PostgreSQL, MySQL) and NoSQL databases (e.g. MongoDB).
- Experience in database schema design, optimization, and management.
5. Cloud Services
- Hands-on experience with cloud platforms such as Azure,AWS or Google Cloud.
6. Performance Optimization
- Experience with performance tuning and optimization of backend services.
7. Security
- Understanding of security best practices and experience implementing secure coding practices.
- Soft Skills:
- Strong problem-solving skills and attention to detail.
- Excellent communication and collaboration skills, with the ability to work effectively in a team environment.
- Ability to manage multiple priorities and work in a fast-paced, dynamic environment.
- Job Description
We are looking for a talented Platform Engineer with a strong background in Python programming and AWS services to join our growing team.
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.
- Provide technical support and guidance to internal and external stakeholders.
- 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.
- Demonstrated experience in utilizing AWS services, including Lambda, RDS, and DynamoDB.
- Strong understanding of cloud computing concepts, infrastructure, and architectural best practices.
- Experience in using source control systems, such as Git.
- Excellent problem-solving skills and the ability to debug complex systems.
- Strong communication skills, both written and verbal, with the ability to work effectively with team members and stakeholders.
- A constant hunger for learning and staying up-to-date with the latest industry advancements.
- Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent work experience.
Nice to have:
- AWS Certified Developer – Associate or other relevant AWS certifications.
- Experience with the AWS Boto3 SDK for Python.
- Experience with other cloud platforms (Azure, GCP, etc.).
- Familiarity with containerization and orchestration technologies, such as Docker and Kubernetes.
💥 What will you do?
As a Backend Engineer, you will
- Create and maintain server-side code
- Designing database schemas to support business requirements
- Building reusable code and libraries for future use
- Troubleshoot and debug applications
- Write unit tests
- Stay up to date with current best practices
- Collaborate with front end engineers
- Optimization of the application for maximum speed and scalability
- Work with stakeholders including the Executive, Product, Data, and Design teams to assist with web-application-related technical issues and support their requirements.
🙋 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
- 2+ years of relevant work experience as a Backend engineer using Python frameworks like Django, Flask, etc
- Experience with relational databases like MySQL, PostgreSQL
- Good understanding of OOP concepts
- Understanding of code versioning tools, such as Git
- Basic understanding of front-end technologies and platforms, such as JavaScript, HTML5, and CSS3.
- Experience writing unit tests for the application is a plus
- Experience with building REST APIs
- Superior analytical, conceptual, and problem-solving skills.
- Strong verbal and written communication skills in English.
Python Developer
6-8 Years
Mumbai
N.p only immediate or who is serving LwD is 1st week of july.
- Python knowledge: object-oriented programming: inheritance, abstract classes, dataclass, dependency injection, design patterns: comand-query, repository, adapter, hexagonal architecture, swagger/Open API, flask, connexion
- Experience on AWS services: lambda, ecs, sqs, s3, dynamodb, auroradb
- Experience with following libraries boto3, behave, pytest, moto, localstack, docker
- Basic knowledge about terraform, gitlab ci
- Experience with SQL DB
Job definition
Working at CAST R&D means being an important part of a highly-talented, fast-paced, multi-cultural and Agile team based in Paris (France) and Bangalore (India). The team builds a sophisticated source code analysis platform leveraging parsing, control flow, data flow and others mechanisms to fully understand the inner structure of the complex IT Systems developed and used by the Fortune 500 companies.
You, working as individual contributor as part of team, will contribute to the core part of our platform: source code analyzers. You will contribute to the evolution of our technology to support the latest evolution of languages and frameworks. You will have the opportunity to work on the different parts of the analysis chain from parsing to developing new quality rules notably the ones related to the emerging CISQ standard. Python or C++ will be your main languages.
About your Team
We develop source code analyzers which are plugins of our platform CAST AIP.
Close to customer needs, we deliver incrementally features and fixes according to priorities. Using Lean approach and eXtreme Programming:
• We write user documentation
• We thank our testers to find bugs which enable us to add more unit test coverage.
Profile
The candidate should have a passion for technology and a flexible, creative approach to problem solving.
• Must have at least 4 years of experience
• Must have expertise in Python or C++ development
• Must be pragmatic
• Must have excellent written, oral and telephone communication skills in English.
• Must have strong analytical and logical skills
• Must accept to follow a framework of rules on how to write/design static analyzers
• Hands on TDD addict: writing unit tests.
• Must accept to do a lot of maintenance
• Eager to learn new languages and frameworks at “high” level
JOB DESCRIPTION
DYT - Do Your Thing, is an app, where all social media users can share brands they love with their followers and earn money while doing so! We believe everyone is an influencer. Our aim is to democratise social media and allow people to be rewarded for the content they post. How does DYT help you? It accelerates your career through collaboration opportunities with top brands and gives you access to a community full of experts in the influencer space.
RESPONSIBILITIES
- Expert in Python with knowledge of Python best practices (PEP8)
- Strong knowledge of python web frameworks such as Django, Flask • Strong knowledge of building RESTful APIs using Django Rest Framework • Good Understanding of Django ORM Libraries
- Able to integrate multiple data sources and databases into one system • Strong experience on Linux
- Solid database skills in a relational database (i.e. PostgresSQL,MYSql) • Able to create database schemas that represent and support business processes • Strong unit test and debugging skills
- Proficient understanding of code versioning tools (git)
- Experience deploying on AWS is desirable
- Experience with Docker,Test Drive Development will be a plus
- Excellent interpersonal, leadership, influence and communication skills • Experience in designing scalable micro-services is desirable
QUALIFICATIONS
- 1-3 years of experience as a backend developer
- At least one product build and published
- SKILLS Contribute in all phases of the development lifecycle
- Write well designed, testable, efficient code
- Work well under pressure and meet deadlines without sacrificing quality • Work with distributed development teams
About the Role
The Dremio India team owns the DataLake Engine along with Cloud Infrastructure and services that power it. With focus on next generation data analytics supporting modern table formats like Iceberg, Deltalake, and open source initiatives such as Apache Arrow, Project Nessie and hybrid-cloud infrastructure, this team provides various opportunities to learn, deliver, and grow in career. We are looking for technical leaders with passion and experience in architecting and delivering high-quality distributed systems at massive scale.
Responsibilities & ownership
- Lead end-to-end delivery and customer success of next-generation features related to scalability, reliability, robustness, usability, security, and performance of the product
- Lead and mentor others about concurrency, parallelization to deliver scalability, performance and resource optimization in a multithreaded and distributed environment
- Propose and promote strategic company-wide tech investments taking care of business goals, customer requirements, and industry standards
- Lead the team to solve complex, unknown and ambiguous problems, and customer issues cutting across team and module boundaries with technical expertise, and influence others
- Review and influence designs of other team members
- Design and deliver architectures that run optimally on public clouds like GCP, AWS, and Azure
- Partner with other leaders to nurture innovation and engineering excellence in the team
- Drive priorities with others to facilitate timely accomplishments of business objectives
- Perform RCA of customer issues and drive investments to avoid similar issues in future
- Collaborate with Product Management, Support, and field teams to ensure that customers are successful with Dremio
- Proactively suggest learning opportunities about new technology and skills, and be a role model for constant learning and growth
Requirements
- B.S./M.S/Equivalent in Computer Science or a related technical field or equivalent experience
- Fluency in Java/C++ with 15+ years of experience developing production-level software
- Strong foundation in data structures, algorithms, multi-threaded and asynchronous programming models and their use in developing distributed and scalable systems
- 8+ years experience in developing complex and scalable distributed systems and delivering, deploying, and managing microservices successfully
- Subject Matter Expert in one or more of query processing or optimization, distributed systems, concurrency, micro service based architectures, data replication, networking, storage systems
- Experience in taking company-wide initiatives, convincing stakeholders, and delivering them
- Expert in solving complex, unknown and ambiguous problems spanning across teams and taking initiative in planning and delivering them with high quality
- Ability to anticipate and propose plan/design changes based on changing requirements
- Passion for quality, zero downtime upgrades, availability, resiliency, and uptime of the platform
- Passion for learning and delivering using latest technologies
- Hands-on experience of working projects on AWS, Azure, and GCP
- Experience with containers and Kubernetes for orchestration and container management in private and public clouds (AWS, Azure, and GCP)
- Understanding of distributed file systems such as S3, ADLS or HDFS
- Excellent communication skills and affinity for collaboration and teamwork








