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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—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
About Us
Rezo.ai is an AI-Powered Contact Center that enables enterprises to enhance customer experience and boost revenue by automating and analyzing customer agent interactions across multiple channels including voice, email, chat/WhatsApp, and social, at the required scale, whilst training agents with minimal costs
How do we do it
Rezo’s AI-Powered contact center leverages groundbreaking technologies in AI, ML, ASR, NLP, RPA, and predictive intelligence to transform customer experience and reduce costs by automating, and analyzing customer-agent conversations across multiple channels including voice, email, chat/Whatsapp, and social media, whilst coaching them.
What Makes You A Good Fit :
- You are passionate about technology and software development
- You are continuously experimenting and learning more
- You love solving problems and digging into complex problems
- You believe in taking decisions as close to the product and technical expertise as possible.
- You believe in creativity, trying new things and learning from your mistakes.
- You believe in sharing insights and helping one another to build an even better user plan.
Key Skills Required:
- 3-8 years of Experience in Java Product Development.
- Good understanding of MYSQL.
- Practitioner of clean code and SOLID principles
- Exposure to GIT and Maven
- Good verbal and written communication skills
- Understands different major language paradigms (Object Oriented and Functional)
- Understanding and Experience with Multi-Threaded Applications
- Prior Experience in a SAAS Product company is a Plus
- Experience with Managing Team is a plus
Educational Background:
- Bachelor's/Master’s degree in Computer Science Engineering from Tier 1 College is a Plus.
Why You Should Join Rezo.AI
- You will be surrounded by Passionate Team Members with Exposure to Product Building
- You will be learning About various Product Development Cycles
- Big Career Opportunities
- Learning by doing
- The Opportunity of Innovation
- Recognition
- Enhanced Responsibility and Team Management
Cultural fitment
Work at the heart of AI and customer engagement.
If you are fascinated by AI and looking to work with the latest AI technologies, in a fast growing and flexible work environment with immense growth opportunities, come and join us.
Rezo is the place to be if you want to work in an atmosphere where you can do meaningful research, contribute to the platform, and grow fast.
Culture/Values
We believe that allowing employees to pursue their interests and challenge the existing quo only helps to make Rezo a successful workplace. To that end, we are committed to assisting our employees in enhancing the skills that are vital to their professional growth.
FOCUS, INTEGRITY, TEAMWORK, PASSION, INNOVATION
Why Us?
We are a fast-paced start-up with some of the best talents from diverse backgrounds. Working together to solve customer service problems. We believe a diverse workforce is a powerful multiplier of innovation and growth, which is key to providing our clients with the best possible service and our employees with the best possible career. Diversity makes us smarter, more competitive, and more innovative.
Visit our website: https://rezo.ai/">https://rezo.ai/ for more information
Key Responsibilities:
- Rewrite existing APIs in NodeJS.
- Remodel the APIs into Micro services-based architecture.
- Implement a caching layer wherever possible.
- Optimize the API for high performance and scalability.
- Write unit tests for API Testing.
- Automate the code testing and deployment process.
Skills Required:
- At least 3 years of experience developing Backends using NodeJS — should be well versed with its asynchronous nature & event loop, and know its quirks and workarounds.
- Excellent hands-on experience using MySQL or any other SQL Database.
- Good knowledge of MongoDB or any other NoSQL Database.
- Good knowledge of Redis, its data types, and their use cases.
- Experience with graph-based databases like GraphQL and Neo4j.
- Experience developing and deploying REST APIs.
- Good knowledge of Unit Testing and available Test Frameworks.
- Good understanding of advanced JS libraries and frameworks.
- Experience with Web sockets, Service Workers, and Web Push Notifications.
- Familiar with NodeJS profiling tools.
- Proficient understanding of code versioning tools such as Git.
- Good knowledge of creating and maintaining DevOps infrastructure on cloud platforms.
- Should be a fast learner and a go-getter — without any fear of trying out new things Preferences.
- Experience building a large scale social or location-based app.
We are looking for a Node.js Developer responsible for managing the interchange of data between the server and the users. Your primary focus will be the development of all server-side logic, definition and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end. You may also need to integrate the front-end elements built by your co-workers into the application. Therefore, a basic understanding of front-end technologies is desirable, but not essential.
We are a top-quality boutique software development company. Delivering solutions that meet customers’ needs, business expectations. We combine proven techniques, industry knowledge and our technology expertise of skilled software developers to deliver high-quality software solutions.
Duties and responsibilities:
- Work as part of a team developing applications and services using Agile development methods.
- Contribute to team and organizational improvements in process and infrastructure.
- Code, test and operate node.js based services.
- Effectively use tools and ingenuity to identify and fix defects before they become a problem.
Requirements and qualifications:
- Previous working experience as a Node.js Developer for 2 years or more.
- In depth knowledge of Node.js.
- Hands on experience with HTML, CSS, and AJAX.
- Applicable knowledge of web libraries and frameworks.
- Familiarity with the whole web stack, including protocols and web server optimization techniques.
- Strong analytical skills and problem-solving aptitude.
- Ability to work with stakeholders and fellow developers.
- Good understanding of SQL databases.
- Good understanding of REST APIs.
Required Technical Skills:
- Java (highly capable)
- SQL (highly capable)
- Strong knowledge of software best practices, build processes, IDEs, database tools (e.g. SQL Developer, SQL Management Studio)
- Strong knowledge of source code control systems (GIT)
- Confident with Windows, Linux, Unix operating systems including command line
- Working knowledge of JIRA
Beneficial Technical Skills:
- .Net
- C
- Javascript
- Experience in test management and test execution
- Experience of Agile development methods
Additional Skills and Behaviour Required
- Experience of full software development lifecycle
- Considers competing solutions and evaluates options to create the best outcome in all aspects of the role.
- Willingness to takes ownership of whole project and engineers assigned.
- Confident to make suggestions and recommendations for improvements.
- Excellent written and verbal communication skills and ability to build good rapport
- Fluency in English, both written and oral
- Collaborates with others to achieve objectives and ensure information flow
- Seeks assistance and feedback as appropriate
Education
- Bachelor's degree (or equivalent) in Computer Science or Engineering or other relevant discipline (MCA, MSc in Computer Science etc.)
Ruby and Rails
Creating JSON based web services from Ruby on Rails (RoR) apps
HTML5, CSS3, JavaScript, jQuery, CoffeeScript, Ajax, lodash/underscore.js
A firm grasp of object-oriented analysis and design
Good to have knowledge in any front end framework, Angular or above versions, Backbonejs, Ember.js
Should have extensive experience in Agile software development principles, practice, and process
Should have worked on enterprise-cl applications
RoR Performance tuning and scaling
Proficiency in English strongly preferred
A proactive and resourceful person who achieves with minimal oversight
Team player with the ability and desire to become an integral part of a fast-paced team
Good knowledge of relational databases MySQL, Oracle, Microsoft SQL Server, DB2 or similar
Hands-on experience with at least one of the NoSQL environments like MongoDB, Couchbase, Cassandra
Experience with text search systems like elastic, solr or similar
Hands-on experience in integrating with third-party REST APIs
Managing code with Git and other version control tools
Good to have knowledge of Nginx








