Senior Software Engineer Backend

About the Role

Unico Connect is an AI-first technology partner that builds custom mobile, web, and AI products for clients across multiple geographies. We are hiring a Backend Engineer for a dedicated client engagement building an AI-powered application builder platform.

The backend is the operational core of the product: it manages user projects and sessions, coordinates long-running AI agent workloads, maintains project state, and serves as the integration layer between the frontend, the AI system, and the underlying infrastructure.

The mandatory requirement is hands-on production experience shipping Node.js services, with end-to-end ownership of API design, data modelling, and at least one production system involving background job processing or event-driven patterns.

Responsibilities

API and service development: Design and build REST APIs in Node.js with TypeScript. Cover authentication, session management, input validation, structured error handling, streaming responses (SSE, WebSockets), and rate limiting. Maintain clean API contracts that the frontend and AI system can rely on.

Database design and management: Own PostgreSQL schema design for product domains including user accounts, projects, file trees, session state, and generated artefacts. Write efficient queries, manage migrations, and optimise for read patterns that serve a real-time editor experience.

Caching strategy: Implement and maintain caching with Redis for session data, project state, and frequently read configuration. Design cache invalidation logic that keeps the editor experience consistent without stale reads.

Queue and background job management: Implement and operate background job infrastructure using BullMQ or equivalent. AI agent runs are long-running and stateful; handle retries, failure states, priority queues, and concurrency limits.

AI system integration: Build the integration layer between the backend and the AI agent system. Manage job dispatch, result handling, streaming output to the frontend, and error propagation.

Multi-tenancy and access control: Implement tenant data isolation, RBAC, and resource ownership enforcement across all API surfaces.

Observability and reliability: Instrument services with structured logging, metrics, and tracing. Write defensive code with sensible timeouts, fallback behaviour, and circuit breaking on external dependencies.

Testing and code quality: Write unit and integration tests for the services you ship. Review the work of peers and contribute to shared engineering conventions.

Requirements

• Hands-on production Node.js experience (mandatory) — must have personally shipped at least one feature area end to end in a production Node.js service, owning API design, data modelling, and testing.

• 3 to 5 years of professional backend engineering experience. Candidates with slightly less time but strong demonstrated ownership are welcome to apply.

• Strong Node.js and TypeScript. Production experience with Express, NestJS, or Fastify. Solid with async patterns, streaming, error handling, and building services that run reliably under sustained load.

• PostgreSQL depth. Schema design, query writing, indexing, and migrations on at least one production system.

• Redis and caching. Production experience using Redis for caching and session management. Understands cache invalidation trade-offs.

• Queue and background job systems. Hands-on with BullMQ, RabbitMQ, SQS, or equivalent. Experience managing retries, dead-letter queues, job priority, and concurrency control.

• AWS working knowledge. Comfortable with EC2, S3, RDS, SQS, and IAM. Familiar with Docker and basic deployment and environment management.

• Strong written and spoken English. Able to communicate clearly with engineers across disciplines and write precise technical documentation.

Nice to Have

Experience integrating with AI or LLM services (streaming responses, structured outputs, retry patterns); WebSocket or SSE implementation for real-time features; multi-tenant SaaS product experience; GraphQL; OpenTelemetry instrumentation; prior work on developer tools or editor-style products.

Designation – Nodejs Developer

Experience – Min 3+ Yrs

Location: Ahmedabad ( WFO)

We are seeking a highly skilled Senior Node.js Developer with expertise in SQL and MongoDB to join our dynamic team.

As a key member of our development team, you will be responsible for managing the interchange of data between the server and users, as well as developing server-side logic. Your primary focus will be on the development of all server-side logic, ensuring high performance and responsiveness to requests from the front-end. Additionally, your experience with both SQL and NoSQL databases will be crucial in defining and maintaining our data storage solutions.

Responsibilities:

 Develop and maintain server-side applications using Node.js.

 Design and implement RESTful APIs for seamless integration with front-end applications.

 Collaborate with front-end developers to integrate user-facing elements with server-side logic.

 Optimize applications for maximum speed and scalability.

 Implement security and data protection measures.

 Design and maintain database schemas for both SQL (e.g., MySQL, PostgreSQL) and NoSQL (e.g., MongoDB) databases.

 Manage and mentor junior developers, providing technical guidance and support.

 Stay updated with emerging technologies and industry best practices.

Requirements:

 Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent work experience.

 Minimum 4 years of experience in Node.js development.

 Proficiency in JavaScript/TypeScript and frameworks such as Express.js.

 Strong understanding of asynchronous programming and event-driven architecture.

 Experience with SQL databases (e.g., MySQL, PostgreSQL) and proficiency in writing complex SQL queries.

 Experience with NoSQL databases (e.g., MongoDB) and familiarity with their query languages.

 Familiarity with ORM libraries (e.g., Sequelize, Mongoose) for database interaction.

 Knowledge of version control systems (e.g., Git).

 Understanding of CI/CD pipelines and deployment processes.

 Excellent communication and teamwork skills.

 Ability to lead and mentor a team of developers.

Job Description: Python Developer  

Location: Pune   Employment Type: Full-Time   Experience: 0.6-1+ year 

Role Overview 

We are looking for a skilled Python Developer with 0.6-1+ years of experience to join our team. The ideal candidate should have hands-on experience in Python, REST APIs, Flask, and databases. You will be responsible for designing, developing, and maintaining scalable backend services.  

Key Responsibilities  

• Develop, test, and maintain high-quality Python applications.  
• Design and build RESTful APIs using Flask.  
• Integrate APIs with front-end and third-party services.  
• Work with relational (PostgreSQL, MySQL) and NoSQL databases (MongoDB,  Redis).  
• Optimize performance and troubleshoot issues in backend applications.  
• Collaborate with cross-functional teams to define and implement new features.  
• Follow best practices for code quality, security, and performance optimization.  

Required Skills  

• Strong proficiency in Python (0.6-1+ years).  
• Experience with Flask (or FastAPI/Django).  
• Hands-on experience with REST API development.  
• Proficiency in working with databases (SQL & NoSQL).  
• Familiarity with Git, Docker, and CI/CD pipelines is a plus.  

Preferred Qualifications  

• Bachelor's degree in Computer Science, Engineering, or a related field.  
• Experience working in Agile/Scrum environments.  
• Ability to write clean, scalable, and well-documented code. 

Mandatory Skills - 4 years in Nodejs, JavaScript, Express.js, MongoDB, Data Structures, Algorithms

"Expertise in Node.js Web frameworks like Meteor, Express, and Kraken.JS

Expertise in building highly scalable web services using Node.js, Create REST API with the help of Node middleware

Deep understanding of REST and API design

Experience designing APIs for consistency, simplicity, and extensibility.

Expertise with JavaScript testing frameworks like Jasmine, Quit, Mocha, Sinnon and Chai.

Expertise with building tools like Web pack, gulp, and grunt.

Integration of various application components

Experience in various phases of the Software Development Life Cycle (SDLC) such as requirements

analysis, design, and implementation in an agile environment, etc.

A Node.js job description typically outlines the responsibilities, qualifications, and expectations for a Node.js developer or related role. Node.js is a popular runtime environment for executing JavaScript on the server-side, making it an essential technology for web and application development. Below is a sample Node.js job description:

Job Title: Node.js Developer

Job Description:

Position Overview:

We are seeking a skilled Node.js developer to join our dynamic team. As a Node.js developer, you will be responsible for designing, implementing, and maintaining server-side applications using Node.js. Your primary focus will be on developing scalable, efficient, and high-performance applications while working closely with our front-end and back-end developers.

Responsibilities:

1. Develop server-side applications using Node.js and Express.js or other Node.js frameworks.
2. Collaborate with front-end developers to integrate user-facing elements with server-side logic.
3. Build and optimize APIs for mobile and web applications.
4. Implement security and data protection measures.
5. Troubleshoot and resolve software defects and performance issues.
6. Write clean, maintainable, and testable code.
7. Deploy applications on cloud platforms like AWS, Azure, or Heroku.
8. Stay up-to-date with Node.js and related technologies, and incorporate best practices and emerging trends into development processes.
9. Perform code reviews to ensure code quality and adherence to coding standards.
10. Participate in the development of technical documentation.
11. Collaborate with cross-functional teams to develop and maintain software applications.
12. Support and maintain the application infrastructure, including monitoring, scaling, and performance optimization.

Qualifications:

1. Proven experience as a Node.js developer or similar role.
2. Strong proficiency in JavaScript and its core concepts.
3. Experience with Node.js and server-side frameworks like Express.js.
4. Familiarity with front-end technologies such as HTML, CSS, and JavaScript.
5. Understanding of asynchronous programming and event-driven architecture.
6. Knowledge of database systems (e.g., MongoDB, PostgreSQL, MySQL).
7. Experience with version control systems (e.g., Git).
8. Basic knowledge of DevOps and cloud platforms.
9. Good communication and collaboration skills.
10. Problem-solving abilities and attention to detail.
11. Ability to work both independently and as part of a team.
12. Bachelor's degree in Computer Science, Information Technology, or a related field (or equivalent work experience).

Additional Skills (Preferred but not required):

• Experience with microservices architecture.
• Knowledge of containerization technologies like Docker and Kubernetes.
• Familiarity with test-driven development (TDD).
• Understanding of authentication and authorization mechanisms.
• Experience with continuous integration and continuous deployment (CI/CD) pipelines.

Company Culture and Benefits:

• We offer a collaborative and innovative work environment.
• Competitive salary and benefits package.
• Opportunities for professional growth and development.
• Flexible work arrangements and remote work options.

About KAFQA

At Kafqa, we are building the next generation performing arts platform. Our mission is to transform how India learns, performs & watchers performing arts. We are currently in stealth mode with a target public launch date in April. Our launch services consist of technology enabled dance classes in our proprietary studios, production facilities and social media broadcasting & competitions.

Founder & Team

The founder is Shariq Plasticwala. He is a graduate of IIT Bombay & Stanford GSB. He was part of the founding team of Amazon India where he played a key role for over 8 years. Among his roles at Amazon, he was the CEO of Amazon’s first joint venture in India and a Board Member of Amazon’s payments business. The other members of the founding team consist of senior executives from Shiamak Davar & Byju’s.

Background

• At least 1+ years’ experience in back-end development in a fast-paced environment, working in Python & Django Framework
• Deep understanding of technologies used in web-deployed SaaS products, including Rest APIs
• Exposure to AWS, Azure or other cloud providers

Opportunity

We will share our workload as a team and we expect you to work on a broad range of tasks. Here’s are some of the things you might have to do on any given day:

• Developing APIs and endpoints for deployments of our product
• Infrastructure Development such as building databases, creating and maintaining automated jobs
• Build out the back-end to deploy and scale our product
• Build POCs for client deployments
• Document your code, write test cases, etc.

Skills

• Hands-on experience with Python (1+ years)
• Sound understanding of Postgres and NoSQL databases such as MongoDB
• Deep familiarity with UNIX, major cloud platforms (AWS, Azure), DevOps
• Understanding of databases, and related tools, paradigms

Node.js Developer Responsibilities:

• Developing and maintaining all server-side network components.
• Ensuring optimal performance of the central database and responsiveness to front-end requests.
• Collaborating with front-end developers on the integration of elements.
• Designing customer-facing UI and back-end services for various business processes.
• Developing high-performance applications by writing testable, reusable, and efficient code.
• Implementing effective security protocols, data protection measures, and storage solutions.
• Running diagnostic tests, repairing defects, and providing technical support.
• Documenting Node.js processes, including database schemas, as well as preparing reports.
• Recommending and implementing improvements to processes and technologies.
• Keeping informed of advancements in the field of Node.js development.

Node.js Developer Requirements:

• Bachelor's degree in computer science, information science, or similar.
• At least 4 years' experience as a Node.js developer.
• Extensive knowledge of JavaScript, web stacks, libraries, and frameworks.
• Knowledge of front-end technologies such as HTML5 and CSS3.
• Superb interpersonal, communication, and collaboration skills.
• Exceptional analytical and problem-solving aptitude.
• Great organizational and time management skills.
• Availability to resolve urgent web application issues outside of business hours.

About the role: We’re looking for a Node.Js Developer who can adapt to new tech stacks and innovate with cutting-edge technology solutions, to build eCommerce platforms that are unique, disruptive, and powerful.

What you'll do:
● Integrate user-facing elements developed by front-end developers with server-side logic
● Write reusable, testable, and efficient code
● Design and implement low-latency, high-availability, and performant applications
● Implement security and data protection integrations
● Integrate data storage solutions such as databases, key-value stores, blob stores, etc.
● Optimize components for maximum performance across a vast array of web-capable devices and browsers
● Ensure high performance and responsiveness to requests from the front-end.

What you'll need:
● Bachelor's degree with minimum 3 years of work experience as a Node Js.
● Strong proficiency in JavaScript or Typescript
● Understanding of Node.js and its frameworks such as Express or StrongLoop
● Understanding of the nature of asynchronous programming and its quirks and workarounds
● Basic understanding of front-end technologies, such as HTML5, and CSS3
● Understanding of accessibility, security compliance, user authentication and authorization between multiple systems, servers, and environments
● Understanding fundamental design principles behind a scalable application
● Understanding of code versioning tools, such as GIT
● Integration of multiple data sources and databases into one system
● Understanding of the differences between multiple delivery platforms, such as mobile and desktop and its optimization output
● Knowledge on creating database schemas that represent and support business processes
● Knowledge on implementing automated testing platforms and unit tests

Who Should Consider Joining:
● If you like challenges and think from a first principle basis,
● If you are driven to take ownership and are adept at rolling with the punches,
● If you have the aspiration to grow fast in the dynamic environment of a start-up,
● If you are a collaborative team member, who believes in collective success,
● If you are someone who makes objective, fact-based decisions

Who should not consider joining:
● If the role description does not excite you, then you should not join us
● We are a startup and things will move fast. If you are not comfortable in a fast-paced environment, then you should not join us
● If you are not a self-starter who is willing to learn & experiment more, then you should not join us.

What We Offer:
● Limitless growth and learning opportunities
● Exposure to cutting edge technology solutions and upcoming stacks in the market
● In house technical training on GIT, Automated Testing, Code Coverage, Language Training and much more
● A collaborative and positive culture — Your team will be as smart and driven as you.
● Guidance and mentorship from industry experts and renowned IIT Alumnus
● An opportunity to make an impact — Your work will contribute directly to our strategy and growth

Role- Full time
Experience Level- 8 to 13 Years
Job Location- Hyderabad
Key Responsibilities :

Serves as a technical point of contact within the organization by:

Influencing the product requirements, behaviour and design (Automation Platform)

Driving early adoption of technology, features and best practices around product development

Lead development at all layers GUI, Backend ( DevOps Tools API integration) & DB

Work with a team of developers and testers in a highly agile environment to produce high-quality software.

Design and developing house tools. Also, expected to demonstrate new ideas through prototypes/Proof of Concepts.

Evaluate and Assess newer technologies/architecture for product development

Keeping up to date with emerging technologies/tools in DevOps Space and developments trends to assess the impact of the projects.

Must have:

Should possess Bachelors/Masters/ PhD in computer science with a minimum of 8+ years of experience

Should possess a minimum of 3 years of experience in Products/Tools Development

Should possess expertise in using various DevOps tools libraries and API's (Jenkins/JIRA/AWX/Nexus/GitHub/BitBucket/ SonarQube)

Experience in designing and developing products, tools or test automation frameworks using Java or Python technologies.

Should have a strong understanding of OOPs, SDLC (Agile Safe standards), STLC

Proficient in Python, with a good knowledge of its ecosystems (IDEs and Frameworks)

Familiar with designing and developing applications using AngularJS, HTML5, Bootstrap, NodeJS, MongoDB, etc.

Experience in implementing, consuming and testing Web services Rest APIs would be an added advantage.

Experience working as a Full-Stack developer would be an added advantage

Regards,
Talent Acquisition Team