
Description:
For over 10 years, Zscaler has been disrupting and transforming the security industry. Our 100% purpose-built cloud platform delivers the entire gateway security stack as a service through 150 global data centers to securely connect users to their applications, regardless of device, location, or network in over 185 countries protecting over 3,900 companies and have detected 100 Million threats/day.
We work in a fast-paced, dynamic and make it happen culture. Our people are some of the brightest and passionate in the industry that thrives on being the first to solve problems. We are always looking to hire highly passionate, collaborative and humble people that want to make a difference.
About the role :
This is a senior staff backend engineer role in the engineering team that designs, implements and maintains our state of the art product IllusionBLACK. The team is responsible for designing and implementing secure, highly performant and maintainable product.
Responsibilities:
- Architect, develop and maintain high performance, fault tolerant and scalable cloud hosted service using NodeJS
- End to end responsibility to continuously create and monitor the services you build
- Help design reusable and clean API's for our frontend React app
- Guide team members with handling complex issues
- You will also be responsible for database schema design and development of migration scripts
- Experiment with new technologies and ideas and help shape our stack and processes
Requirement:
- 10+ years professional SW development experience
- All our production applications are built with either Typescript or Python. You must have a strong understanding of NodeJS express apps written in Typescript and ES6
- Must have good experience with Python
- Solid experience with databases is a must. We use and love Postgres here at Smokescreen
- You should be able to design a complex database SQL schema normalized to 3NF on the back of a napkin at 3am in the morning
- Deep understanding and working knowledge of Redis cache
- Experience with Solr or Elasticsearch is a must. We use Solr for our event analytics exclusively
- Experience with AWS, Azure or GCP is a plus. We have a large distributed application running on AWS
- Experience with Docker/Swarm is a plus
- Experience in some stream processing platforms like Kafka/Redis stream is a plus

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Backend Engineer – AI Video Intelligence
Location: Remote
Type: Full-Time
Experience Required: 3–6 years
About the Role
We are hiring a Backend Engineer who is passionate about building highly performant, scalable backend systems that integrate deeply with AI and video technologies. This is an opportunity to work with a world-class engineering team, solving problems that power AI-driven products in production at scale.
If you enjoy crafting APIs, scaling backend architecture, and optimizing systems to millisecond-level response times — this is the role for you.
Responsibilities
● Build and scale backend systems using Node.js, Python, and TypeScript/Javascript
● Architect microservices for real-time video analysis and LLM integrations
● Optimize database queries, caching layers, and backend workflows
● Work closely with frontend, data, and DevOps teams
● Deploy, monitor, and scale services on AWS
● Own the backend stack from design to implementation
Must-Have Skills
● 3+ years of experience with backend systems in production
● Strong in Node.js, Python, and TypeScript
● Experience designing REST APIs and microservices
● Proficient in PostgreSQL, MySQL, and Redis
● Hands-on with AWS services like EC2, S3, Lambda, etc.
● Real-world experience integrating with AI/LLM APIs
● Strong debugging and profiling skills
Bonus Skills
● Familiarity with Rust, Golang, or Next.js
● Prior experience in video tech, data platforms, or SaaS products
● Knowledge of message queues (Kafka, RabbitMQ, etc.)
● Exposure to containerization and orchestration (Docker/Kubernetes)
About NonStop io Technologies:
NonStop io Technologies is a value-driven company with a strong focus on process-oriented software engineering. We specialize in Product Development and have a decade's worth of experience in building web and mobile applications across various domains. NonStop io Technologies follows core principles that guide its operations and believes in staying invested in a product's vision for the long term. We are a small but proud group of individuals who believe in the 'givers gain' philosophy and strive to provide value in order to seek value. We are committed to and specialize in building cutting-edge technology products and serving as trusted technology partners for startups and enterprises. We pride ourselves on fostering innovation, learning, and community engagement. Join us to work on impactful projects in a collaborative and vibrant environment.
Brief Description:
NonStop io is seeking a proficient Java Developer to join our dynamic team. In this role, you will contribute to designing, developing, and maintaining high-quality Java-based applications. You will work closely with cross-functional teams, ensuring the delivery of robust and scalable software solutions.
Responsibilities:
● Develop and Maintain: Write clean, efficient, and maintainable code for Java-based applications
● Collaborate: Work with cross-functional teams to gather requirements and translate them into technical solutions
● Code Reviews: Participate in code reviews to maintain high-quality standards
● Troubleshooting: Debug and resolve application issues in a timely manner
● Testing: Develop and execute unit and integration tests to ensure software reliability
● Optimize: Identify and address performance bottlenecks to enhance application performance
Qualifications & Skills:
● Strong knowledge of Java, Spring Framework (Spring Boot, Spring MVC), and Hibernate/JPA
● Familiarity with RESTful APIs and web services
● Proficiency in working with relational databases like MySQL or PostgreSQL
● Experience with build tools like Maven or Gradle
● Understanding of version control systems, especially Git
● Strong understanding of object-oriented programming principles and design patterns
● Familiarity with automated testing frameworks and methodologies
● Excellent problem-solving skills and attention to detail
● Strong communication skills and ability to work effectively in a collaborative team environment
Why Join Us?
● Opportunity to work on cutting-edge technology products
● A collaborative and learning-driven environment
● Exposure to AI and software engineering innovations
● Excellent work ethic and culture
If you're passionate about technology and want to work on impactful projects, we'd love to hear from you


Mandate Skills:
- 3 - 7 years of experience in cloud-native applications (Azure strongly preferred) using Python.
- Thorough understanding of Object-Oriented Programming (OOP) design and practices.
- Strong RDBMS experience (PostgreSQL, MS SQL etc.) designing tables & writing queries.
- Great command of design patterns (especially integration design patterns)


• 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
Position Overview: We are looking for a senior developer who must be capable of building services using modern microservices architecture with NodeJS & serverless frameworks. Should have strong knowledge of ObjectOriented Concepts, and Node. Js frameworks like loopback, RDBMS, and microservice patterns. The candidate should be comfortable with application coding based on design and specifications, and also be comfortable working with JSON and RESTful services. The candidate must be a top-notch developer committed to keeping learning new things and becoming an integral part of and fostering growth within our development team.
Roles & Responsibilities:
- Developing and maintaining the backend systems that support the application
- Designing and implementing APIs and Microservices architecture to handle the application workload
- Developing and optimizing queries for RDBMS (MySQL) to manage data and ensure performance and scalability
- Managing and deploying the application on AWS using Lambda, ECS and other related services
- Collaborating with front-end developers to ensure smooth communication between front-end and back-end systems and back-end systems
- Writing clean, neat and reusable code that follows coding standards and best practices.
- Participating in code reviews and ensuring that coding standards are maintained
- Troubleshooting and debugging issues that arise in production environments
- Optimizing the application for performance, scalability, and security
- Continuously learning and staying up-to-date with the latest technologies and best practices in software development
- Documenting technical specifications, processes, and system design
Company Profile:
Livello India Private Limited is a start up company with its parent company based in Germany in the city of Dusseldorf. We started in the year 2016 with a vision to create revolution in the domain of retail technology to automate and simplify the shopping experience of our customers. We have started our R&D division in India with a vision to strengthen and expand our R&D team to come up with the products that will make the shopping experience of our customers fast and hassle free. Our expertise consists of fullstack, IoT,cloud, data science, computer vision, embedded systems, test automation, electronics and mechanical engineering.
For more information, please visit our website https://www.livello.com/technologies?lang=en
Tasks:
· You will take part in the design of the architecture and the development of modern software-based applications in the back-end (Node.JS &TypeScript)
· You support the technological conception, programming and implementation of new features
· You help manage IoT-to-Cloud services, Microservices and GCP
· Experience of working with MongoDB
Mandatory Requirements:
· Bachelor or Master student in an IT-related field of study
· 3-4 Years of Experience in Backend along with Software Deployment
· Ability to holistically conceive applications in multiple technologies in the backend
· Experience with Node.JS, TypeScript and Mongo DB.
· Hands on exposure to cloud infrastructure (GCP/AWS/Azure)
Nice to Have:
· Experience with GraphQL, Nest.JS, Docker and Kubernetes
· Understanding of IoT device management and message brokers like AMQP or MQTT
· Good to have DevOps experience
· Exposure to Agile Scrum Framework
Benefits:
· A responsible position in a fast-growing and highly innovative start-up
· An agile and diverse team with colleagues from all over the world
· English speaking open work environment, with flat hierarchies and short decision-making paths
· Advanced technology stack leveraging cutting-edge IoT hardware and software
· Creative freedom for own ideas, projects and personal development
· Team building, learning and start-up events
· Opportunity for diversifying your technical learning.
Be a part of IOT Product portfolio and execute towards Digital Transformational initiatives.
Prepare design documents in collaboration with product managers and engineering squads
in development of use cases for new features.
Hands on product lead developer expertise in designing solutions running on hybrid cloud
environments.
Work as a Software Lead in application development using Java, JavaScript, Python, SQL and
other latest technologies running on AWS environments.
Drive Engineering activities in Microservices and Cloud based Architecture by leveraging
DevOps efficiencies and adopting new technology stack in AWS.
Drive communication and consistently report accurate product status for stakeholders
Able to lead a team of engineers, help them with technical issues. (80% self-work and 20%
influencing scrum engineers).
Balance time on development projects including Technical Design, Code Reviews, Mentoring,
and training. Able to break down requirements and build traceability in design and
implementation details.
Work with developers to define unit & automated tests and closely monitor development
milestones. Collaborate with scrum team to identify functional, system and end to end
integration of products leading to deployment.
Understand end to end flow in product development and able to prepare design documents
and present to Engineering and Product Leadership team.
Full stack product development experience.
Skills Required :
Bachelor’s/Master’s degree equivalent with strong knowledge methodology and tools.
8+ years working Experience in designing data, keyword driven or hybrid strategies; Ability
to troubleshoot and think out of the box
Experience in CICD pipeline configuration, creation, and maintenance – from build to deploy
to integration.
Experience in writing clear, concise and comprehensive design documents covering
functional and non-functional requirements.
Hands-on experience in large enterprise development in a multi-cloud environment.
Strong expertise over Java, Python language, Databases, experience in web Frameworks like
Django required for backend development.
Experience of working in AWS (S3, Lambda, RDS, Security, ILM and AWS Services).
Experience with Docker and Kubernetes for Container Management and Orchestration by
setting CI/CD Pipelines using Jenkins / Ansible.
Experience with API (REST/SOAP). Experienced in PowerBI, RDBMS, DB Architecture design
and good control over SQL queries.
Experience with any NoSQL Database, Caching and Messaging is a plus. Experience with
Messaging Tool and Caching Frameworks
Strong Understanding of fundamental concepts: Data Structures, Algorithms, OOPs
concepts, Design patterns and Architectures. Experience with Agile programming techniques
such as test-driven development. Design applications to optimize for performance and
usability.


Responsibilities:
-
Design and implement backend infrastructure and APIs.
-
Write high quality code that is robust, readable and scales.
-
Possess the drive to dive deep. thrive and progress even in ambiguous situations.
-
Encourage and support knowledge sharing within teams and external groups.
-
Troubleshoot & debug applications.
-
Adopt problem solving as a way of life - always go to the root cause.
-
Collaborate with the team to discuss and implement ideas.
-
Build responsive, robust and optimised applications.
Requirements:
-
Passionate about building backend systems.
-
Desire to explore new ideas, open to other ideas as well.
-
Love for writing clean, beautiful, readable and testable code.
-
Experience in designing extensible DRY code.
-
Our stack is based on Django, Python3 Celery, Angular and Postgres.
-
We expect you to have a good understanding of Python. It's even better if you are familiar with some of Git. Django, Celery, Redis and Unix Shell.



- 5-7+ years of commercial Java development experience
- Experience with well known Open Source frameworks/libraries, like Spring Boot
- Work experience with Docker
- Microservice experience
- Experience with AWS like ECS, Lambda, SQS, RDS, Kinesis streams
- Familiar with iterative development
- Upper-intermediate level of English
- Solid understanding of communication and network protocols (TCP/IP, HTTP).
- At ease with Unix/Linux
- Excellent analytical and debugging skills
- Familiar with both SQL and noSQL databases (MySQL, DynamoDB, Memcached, Redis)
- Practical experience with scaling applications to big user numbers is a plus
- Experience with other programming languages is a plus.




