


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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We are seeking a skilled and motivated Software Engineer with over 3 years of experience in designing and developing web-based applications using Node.js.
Key Responsibilities
- Design, develop, and maintain web-based applications using Node.js.
- Build scalable, high-performance RESTful APIs using Express.js or Restify frameworks.
- Develop and maintain robust SQL database systems, leveraging Sequelize ORM.
- Ensure responsiveness of applications across various devices and platforms.
- Collaborate with cross-functional teams during the product development lifecycle, including prototyping, hardening, and testing phases.
- Work with real-time communication technologies and ensure seamless integration.
- Learn and adapt to alternative technologies as needed to meet project requirements.
Required Skills & Experience
- 3+ years of experience in web application development using Node.js.
- Proficiency with frameworks such as Express.js or Restify.
- Strong expertise in SQL databases and experience with Sequelize ORM.
- In-depth understanding of JavaScript, browser technologies, and real-time communication.
- Hands-on experience in developing responsive web applications.
- Experience with React Native (a plus).
- Proficiency in Java.
- Familiarity with product development lifecycle, including prototyping, testing, and deployment.
Additional Skills & Experience
- Experience with NoSQL databases such as MongoDB or Cassandra.
- Knowledge of internationalization (i18n) and latest UI/UX design trends.
- Familiarity with JavaScript libraries/frameworks like ReactJS or VueJS.
- Experience integrating payment gateways for various countries.
- Strong communication skills and ability to facilitate group discussions effectively.
- Eagerness to contribute to product functionality and user experience designs.
Education Requirements
- Bachelor's or Master's degree in Computer Science or a related field.


Role
You will develop and maintain the key backend code and infrastructure of the company stack. You will implement AI solutions like LLMs for various tasks such as voice-based interactive systems, chatbots, and AI web apps. Ability to see projects through from start to finish with good organizational skills and attention to detail. This is a perfect role for someone who likes to build state-of-the-art AI products and work with cutting-edge AI technologies like GPT, LLAMA, etc
Qualifications
- BS or MS in Computer Science or relevant field.
- 4+ years experience in backend software development
- Be able to design high-throughput scalable backend systems
- Eagerness to learn applied AI technologies like LLMs, prompt engineering, etc
- Proficiency in Python.
- Experience with cloud computing platforms (AWS, GCP) and technologies like Docker
- Knowledge of Rest APIs, databases (mysql, mongo, vectorDB)


Job Description:
Candidate must have 2 to 5-years of experience in various phase of development of a python-based application or API development.
Requirements:
Must Have: Strong expertise in PYTHON and its built-in data structures, developing API using flask or fastapi, data wrangling using standard python frameworks like pandas, NumPy etc., integration of various applications (third party or inhouse) with python.
Good to Have: Deployment using Nginx, GUnicorn, IIS, docker and Kubernetes etc. Good understanding of optimization solutions like differential evolution. Hands on experience with python packages like Scipy. Tkinter to make python-based applications.
Roles and Responsibilities:
- Understanding/gathering the requirements from stakeholder, formulating the problem, and leveraging AI/ML to solve the business problems.
- Integration of third party or in house application with python solution.
- Working on Deployment and optimization of various engineering problems using Numerical/Constraint optimization frameworks such as Differential Evolution and deploy a web-based API using Flask and Nginx/IIS.
- Unit testing of various python modules developed and testing of the API.


About Hubler:
Hubler is a one-of-a-kind SaaS product company helping enterprises manage, digitize, automate and optimize business processes with ease. We enable the development of customizable digital business applications with simple, user-friendly automation solutions. Hubler’s no-code, DIY platform lets enterprises build powerful apps to automate their unique business processes. Build on iOS, Android and Web simultaneously and provide the software that fits like a glove across teams. Founded in 2016, the company has led to the successful digital transformation of Over 50 SME and Large customers across varied industry verticals and functions.
Backend Developer (Django + MongoDB) Bangalore Role and Responsibilities We're looking for a hands-on Sr. Backend Developer to work on the design and development of our backend services which are written in Python/Django.
Responsibilities
● Developing restful APIs using the Python Django framework.
● Design and implementation of low-latency, high-availability, and performant applications.
● Interface with business to define requirements, and deliverables, and provide the necessary engineering expertise & support to ensure on-time delivery.
● Work closely with front-end team, Android team, iOS team, Designers and operations to ease integration skills.
● Expert in Python, with knowledge of Django.
● Familiarity with MongoDB, Redis, and Celery.
● Experience with web paradigms such as RESTful APIs, and Test-driven Development (TDD).
● Understanding of the threading limitations of Python, and multi-process architecture.
● Knowledge of user authentication and authorisation between multiple systems, servers, and environments
● Proficient understanding of Git code versioning tool.
● Proven ability to work in a fast-paced, agile and in ownership and results-oriented culture
● Experience with architecting systems for AWS is compulsory.
Qualifications
● 5+ years of experience building web-scale, highly available backends for web and/or mobile.
● 5+ years of experience with Django, MongoDB, Celery, and Django REST Framework.
● Strong problem-solving skills.


About OJ Commerce:
OJ Commerce is a fast-growing, profitable online retailer based in Florida, USA with a full-fledged India office based in Chennai driven by a sophisticated, data-driven system to run the operations with virtually no human intervention. We strive to be the best-in-class ecommerce company delivering exceptional value to customers by leveraging technology, innovation and brand-partnerships to provide a seamless & enjoyable shopping of high-quality products at the best prices to our customers.
Responsibilities:
Work with business-stakeholders to understand requirements, prototype, build and deploy it.
CRUD the backend code you own keeping maintenance, performance and security in mind.
Keep up breast of latest technologies and its ecosystem and adopt ones that aid safe product delivery at speed.
Automate the boring and mundane stuff for you prefer to be productive than being busy.
We are flat. Be responsible for professional growth of self and the team.
- Tune application for performance.
- Take initiatives and manage change to work towards business goals at speed without compromising safety.
- Coach full-stack developers on backend skills.
- Provides problem resolution support, specific to application issues, identifies and resolves problems in application software, determines symptoms and ensures accurate problem definition
Develop functional, architectural and other documentation as required for productive functioning of teams.
- Be the brand ambassador for OJ Commerce by speaking at meetups, conferences, etc.
- We are fluid. Be ready for changing dynamics in responsibilities from time to time. Exciting isn't?
- Take the lead in digital transformation of legacy applications.
What you need to shine?
- You have the prior experience in modernising legacy applications.
- You are a passionate hands-on developer with deep experience in building enterprise grade software in Microsoft ASP.NET Core, ASP.NET MVC, Web API, SOA, Micro-Services and RESTful Services with knowledge of SQL Server database.
- You have the ability to see and work on the big picture (Application Architecture) and devilish details (Complex Code).
- Strong experience in developing web applications using C#, VB.Net, .NET, LINQ, Net Framework 4.0, MVC 3/4/5, ASP.NET Web API, .Net Core etc.
- You are Cloud savvy, preferably Google Cloud.
- You have rich experience in Object-Oriented Programming (OOP) with good knowledge of practical design-patterns and its applications.
Hands-on experience in building SOA or Micro-services preferably on .NET Core.
Proven Architectural skills with high standards in Code quality
Knowledge of ReactJS/Typescript would be added advantage.
Practical experience in Agile development methodologies of using CI/CD.
Extreme Programming (TDD) experience is sought after by us.
What we Offer
- Greenfield opportunity to transform legacy backend applications to latest technology stack.
- Fast-paced start-up environment: This is not for the faint hearted; you need grit and passion as much as you need the core skills.
- Work in an interdisciplinary team where learning from one another and developing solutions cross-functionally is a key part of our culture.
- Golden opportunity to make history by making big business impact.
- Competitive salary to take good care of self and family.
- Insurance Benefits: Medical and Accident cover.
- Flexible Working Hours


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
aims to provide holistic solutions around payment issuance and distribution management. Our
deep focus in payments will help us in bringing new issuance formats as well as technologies
to businesses.
The company has been founded by seasoned technology entrepreneurs who have founded
successful companies like Myntra, Mastiff Technologies earlier. Headquartered in Bangalore,
with presence in Mumbai and NCR, Card91 aims to disrupt the payment infrastructure space
in the issuer-processor segment.
Position: Python Developer
We are building our core team which will be responsible for a highly scalable, always available
microservices based backend for payment processing. The developer will be involved with the
design, implementation, and execution from day one and build a robust, secure, and scalable
payment processing engine.
Roles & Responsibilities
● Individual Contributors talking full ownership of the micro services
● Design and Implement the micro services from scratch
● Be creative and always try to evaluate new strategies to execute faster
● Team player and always eager to teach new team members about the code,
● structure and design
● Not afraid of bringing new designs (even languages) which will make the system
execute faster
Experience and Qualifications
● Having 2 - 5 years of experience
● Degree from a premier institute like IIT/NIT/BITS is desirable
● A strong expertise in Python framework (like Django, Flask or Pyramid)
● Experience in creating APIs with design standards, patterns and best-practices
● Knowledge of object-relational mapping (ORM)
● GoLang experience is a big plus
● Experience building web services in REST
● knowledge and hands-on experience in API security standards and implementation
(Oauth, OpenId)
● Experience in developing highly scalable and reliable web applications, including
integration with internal and external systems.
● Experience in databases like MySQL and NoSQL db like Cassandra, etc.
● Experience with Cloud computing AWS & Microservices architecture
● Exposure to front end technologies like VueJS, ReactJS etc is an advantage
● Docker & Kubernetes experience is a big plus
● Previous experience of Fintech company is an added advantage
What’s on offer
● Vibrant, fun and rewarding culture that nurtures and promotes excellence
● Opportunities to learn and interact with payment industry leaders
● Competitive remuneration, group health insurance & PF
● Other office perks of being part of an early-stage startup
Location: HSR Layout, Bangalore


Responsibilities:
- Understanding requirements from the product manager and translating to technical specifications
- DB schema development
- API development (structuring REST endpoints + real-time endpoints like socket.io integration)
- Integrating 3rd party services for payments, email, whatsapp, and other such services
- Optimizing our current architecture & processes for scale (we expect usage to go up)
- Guiding junior developers on best coding practices
Requirements:
- Experience in at least one Python-based Web Framework like Flask or Django
- Experience in SQL databases & API design
- Experience with Docker
- Hands on experience in full lifecycle development and deployment of a platform/system
- Being a self-starter with the ability to thrive in ambiguous and high pressure scenarios working towards a common goal with other teams

Period: 6 months+
JD:
● 4-7 years of experience building and scaling APIs and web applications.
● Experience building and managing large scale data/analytics systems.
● Have a strong grasp of CS fundamentals and excellent problem solving abilities. Have a good
understanding of software design principles and architectural best practices.
● Be passionate about writing code and have experience coding in multiple languages, including at least
one scripting language, preferably Python.
● Be able to argue convincingly why feature X of language Y rocks/sucks, or why a certain design decision
is right/wrong, and so on.
● Be a self-starter—someone who thrives in fast paced environments with minimal ‘management’.
● Have experience working with multiple storage and indexing technologies such as MySQL, Redis,
MongoDB, Cassandra, Elastic.
● Good knowledge (including internals) of messaging systems such as Kafka and RabbitMQ.
● Use the command line like a pro. Be proficient in Git and other essential software development tools.
● Working knowledge of large-scale computational models such as MapReduce and Spark is a bonus.
● Exposure to one or more centralized logging, monitoring, and instrumentation tools, such as Kibana,
Graylog, StatsD, Datadog etc.
● Working knowledge of building websites and apps. Good understanding of integration complexities and
dependencies.
● Working knowledge linux server administration as well as the AWS ecosystem is desirable.
● It's a huge bonus if you have some personal projects (including open source contributions) that you work
on during your spare time. Show off some of your projects you have hosted on GitHub.


ABOUT THE JOB
We are looking for a Senior Software Engineer to join our team. We believe in giving engineers responsibility, not tasks. Our goal is to motivate and challenge people to do their best work. To do that, we have a very fluid structure and give people flexibility to work on projects that they enjoy the most. This develops more capable engineers, and keeps everyone engaged and happy.
Responsibilities
- Design, develop, test, deploy, maintain and improve the software.
- Manage individual projects priorities, deadlines and deliverables with your technical expertise.
- Identify and solve for bottlenecks within our software stack.
ABOUT YOU
Rubrik Software Engineers are self-starters, driven, and can manage themselves. Bottom line, if you have a limitless drive and like to win, we want to talk to you - come make history!
- Bachelor’s or Master’s degree or equivalent in computer science or related field
- 8+ years of relevant work experience,
- Proficiency in one or more general purpose programming languages like Java, C/C++, Scala, Python
- Experience with Google Cloud Platform/AWS/Azure or other public cloud technologies is a plus
- Experience working with two or more from the following: Unix/Linux environments, Windows environments, distributed systems, networking, developing large software systems, file systems, storage systems, hypervisors, databases and/or security software development.
ABOUT THE TEAM
Galactus team owns the end to end development of Rubrik’s data management suite for commercial public clouds - AWS, Azure and GCP. Our objective is to bring the simplicity of Rubrik’s on-prem data protection and management offerings to our customers in the cloud through a solution designed from ground up to be highly scalable, available & secure and yet optimized to minimize our customer’s cloud costs. We achieve this by taking a cloud-first approach to design - leveraging technologies built for the scale, elasticity and automation needs of the cloud; and deploying on our brand new SaaS platform called Polaris.
Recently we have :-
- Built policy based backup and recovery for Virtual Machines in AWS, Azure and GCP and managed databases in AWS.
- Built features like granular file recovery leveraging managed Kubernetes Service in AWS for elastic compute
ABOUT RUBRIK
Rubrik is one of the fastest-growing companies in Silicon Valley, revolutionising data protection, and management in the emerging multi-cloud world. We are the leader in cloud data management, delivering a single platform to manage and protect data in the cloud, at the edge, and on-premises. Enterprises choose Rubrik to simplify backup and recovery, accelerate cloud adoption, enable automation at scale, and secure against cyberthreats. We’ve been recognized as a Forbes Cloud 100 Company two years in a row and as a LinkedIn Top 10 startup.
Rubrik provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, national origin, age, disability or genetics. In addition to federal law requirements, Rubrik complies with applicable state and local laws governing nondiscrimination in employment in every location in which the company has facilities. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.



