
As a Senior Backend & Infrastructure Engineer, you will take ownership of backend systems and cloud infrastructure. You’ll work closely with our CTO and cross-functional teams (hardware, AI, frontend) to design scalable, fault- tolerant architectures and ensure reliable deployment pipelines.
- What You’ll Do :
- Backend Development: Maintain and evolve our Node.js (TypeScript) and Python backend services with a focus on performance and scalability.
- Cloud Infrastructure: Manage our infrastructure on GCP and Firebase (Auth, Firestore, Storage, Functions, AppEngine, PubSub, Cloud Tasks).
- Database Management: Handle Firestore and other NoSQL DBs. Lead database schema design and migration strategies.
- Pipelines & Automation: Build robust real-time and batch data pipelines. Automate CI/CD and testing for backend and frontend services.
- Monitoring & Uptime: Deploy tools for observability (logging, alerts, debugging). Ensure 99.9% uptime of critical services.
- Dev Environments: Set up and manage developer and staging environments across teams.
- Quality & Security: Drive code reviews, implement backend best practices, and enforce security standards.
- Collaboration: Partner with other engineers (AI, frontend, hardware) to integrate backend capabilities seamlessly into our global system.
Must-Haves :
- 5+ years of experience in backend development and cloud infrastructure.
- Strong expertise in Node.js (TypeScript) and/or Python.
- Advanced skills in NoSQL databases (Firestore, MongoDB, DynamoDB...).
- Deep understanding of cloud platforms, preferably GCP and Firebase.
- Hands-on experience with CI/CD, DevOps tools, and automation.
- Solid knowledge of distributed systems and performance tuning.
- Experience setting up and managing development & staging environments.
• Proficiency in English and remote communication.
Good to have :
- Event-driven architecture experience (e.g., Pub/Sub, MQTT).
- Familiarity with observability tools (Prometheus, Grafana, Google Monitoring).
- Previous work on large-scale SaaS products.
- Knowledge of telecommunication protocols (MQTT, WebSockets, SNMP).
- Experience with edge computing on Nvidia Jetson devices.
What We Offer :
- Competitive salary for the Indian market (depending on experience).
- Remote-first culture with async-friendly communication.
- Autonomy and responsibility from day one.
- A modern stack and a fast-moving team working on cutting-edge AI and cloud infrastructure.
- A mission-driven company tackling real-world environmental challenges.

Similar jobs
🚀 Hiring: Python Developer
⭐ Experience: 2+ Years
📍 Location: Mumbai (Andheri East )
⭐ Work Mode:- 5 Days Work From Office
⏱️ Notice Period: Immediate Joiners
(Only immediate joiners & candidates serving notice period)
Looking for a skilled Python Developer with experience in Django / FastAPI and MongoDB / PostgreSQL.
⭐ Must-Have Skills:-
✅ 2+ years of professional experience as a Python Developer
✅Proficient in Django or FastAPI
✅Hands-on with MongoDB or PostgreSQL
✅Strong understanding of REST APIs & Git
Sizzle is an exciting new startup that’s changing the world of gaming. At Sizzle, we’re building AI to automate gaming highlights, directly from Twitch and YouTube streams. We’re looking for a superstar Python expert to help develop and deploy our AI pipeline. The main task will be deploying models and algorithms developed by our AI team, and keeping the daily production pipeline running. Our pipeline is centered around several microservices, all written in Python, that coordinate their actions through a database. We’re looking for developers with deep experience in Python including profiling and improving the performance of production code, multiprocessing / multithreading, and managing a pipeline that is constantly running. AI/ML experience is a plus, but not necessary. AWS / docker / CI/CD practices are also a plus. If you are a gamer or streamer, or enjoy watching video games and streams, that is also definitely a plus :-)
You will be responsible for:
- Building Python scripts to deploy our AI components into pipeline and production
- Developing logic to ensure multiple different AI components work together seamlessly through a microservices architecture
- Managing our daily pipeline on both on-premise servers and AWS
- Working closely with the AI engineering, backend and frontend teams
You should have the following qualities:
- Deep expertise in Python including:
- Multiprocessing / multithreaded applications
- Class-based inheritance and modules
- DB integration including pymongo and sqlalchemy (we have MongoDB and PostgreSQL databases on our backend)
- Understanding Python performance bottlenecks, and how to profile and improve the performance of production code including:
- Optimal multithreading / multiprocessing strategies
- Memory bottlenecks and other bottlenecks encountered with large datasets and use of numpy / opencv / image processing
- Experience in creating soft real-time processing tasks is a plus
- Expertise in Docker-based virtualization including:
- Creating & maintaining custom Docker images
- Deployment of Docker images on cloud and on-premise services
- Experience with maintaining cloud applications in AWS environments
- Experience in deploying machine learning algorithms into production (e.g. PyTorch, tensorflow, opencv, etc) is a plus
- Experience with image processing in python is a plus (e.g. openCV, Pillow, etc)
- Experience with running Nvidia GPU / CUDA-based tasks is a plus (Nvidia Triton, MLFlow)
- Knowledge of video file formats (mp4, mov, avi, etc.), encoding, compression, and using ffmpeg to perform common video processing tasks is a plus.
- Excited about working in a fast-changing startup environment
- Willingness to learn rapidly on the job, try different things, and deliver results
- Ideally a gamer or someone interested in watching gaming content online
Seniority: We are looking for a mid to senior level engineer
Salary: Will be commensurate with experience.
Who Should Apply:
If you have the right experience, regardless of your seniority, please apply.
Work Experience: 4 years to 8 years
About Sizzle
Sizzle is building AI to automate gaming highlights, directly from Twitch and YouTube videos. Sizzle works with thousands of gaming streamers to automatically create highlights and social content for them. Sizzle is available at www.sizzle.gg.
- Bachelor's or Master’s degree in Computer Science or equivalent area
- 10 to 20 years of experience in software development
- Hands-on experience designing and building B2B or B2C products
- 3+ years architecting SaaS/Web based customer facing products, leading engineering teams as software/technical architect
- Experiences of engineering practices such as code refactoring, microservices, design and enterprise integration patterns, test and design-driven development, continuous integration, building highly scalable applications, application and infrastructure security
- Strong cloud infrastructure experience with AWS and/or Azure
- Experience building event driven systems and working with message queues/topics
- Broad working experience across multiple programming languages and frameworks with in-depth experience in one or more of the following: .Net, Java, Scala or Go-lang
- Hands-on experience with relational databases like SQL Server, PostgreSQL and document stores like Elasticsearch or MongoDB
- Hands-on experience with Big Data processing technologies like Hadoop/Spark is a plus
- Hands-on experience with container technologies like Docker, Kubernetes
- Knowledge of Agile software development process
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 will also be responsible for integrating the front-end elements built by your co-workers
into the application. Therefore, a basic understanding of front-end technologies is necessary as well.
Responsibilities:
● Integration of user-facing elements developed by front-end developers with server-side logic
● Writing reusable, testable, and efficient code
● Design and implementation of low-latency, high-availability, and performant applications Implementation of security and data protection
● Integration of data storage solutions
Skills And Qualifications:
● 1-3 Years Experienced
● Strong proficiency with JavaScript
● Knowledge of Node.js and frameworks available for it (such as Express, StrongLoop, etc depending on your technology stack)
● Understanding the nature of asynchronous programming and its quirks and workarounds
● Good understanding of server-side templating languages
● Good understanding of server-side CSS preprocessors
● Basic understanding of front-end technologies, such as HTML5, and CSS3
● Understanding accessibility and security compliance (Depending on the specific project)
● User authentication and authorization between multiple systems, servers, and environments
● Integration of multiple data sources and databases into one system
● Understanding fundamental design principles behind a scalable application
● Understanding differences between multiple delivery platforms, such as mobile vs. desktop, and optimizing output to match the specific platform
● Creating database schemas that represent and support business processes
● Implementing automated testing platforms and unit tests
● Proficient understanding of code versioning tools, such as Git
- Design, implement, and maintain API-based applications and REST services.
- Proficiency with Node JS.
- Must have experience in cloud services Azure Cloud/AWS.
- Familiarity with database technology such as MySQL, PostgreSQL, and MongoDB.
- Develop high-quality, efficient, and scalable code.
- Understanding of Agile methodologies and SCRUM framework Strong debugging, analytical and problem-solving skills.
- Provide technical support during implementation efforts, working with technical team members and with business users as required to provide troubleshooting and solutions to technical issues.
Excellent programming skills in C/C++ and Python
Need experience on cloud/Virtualization experience.
Strong working experience in developing application on Linux
Experience of working with multi-threading, IPC and socket programming is must.
Familiarity with OS concepts like memory management, scheduling etc. is desirable.
Familiarity with TCP/IP protocol stack is desirable
Knowledge of Linux networking stack including conceptual understanding of IPsec, iptables, conntrack, bridging, policy based routing etc. is desirable
Familiarity with container technology
Aware of Agile Methodologies, CI/CD methods
Experienced with all phases of project in development, testing and deployment and management of enterprise solutions.
Excellent verbal written communication skills.
Self-motivation and the ability to work under aggressive timeline is must.
Strong problem-solving skills and very good time management skills
If you are looking for a change this is what we can promise you:
You will have challenging problems to solve
You will have flexibility and autonomy to solve problems and deliver solutions
We will provide a highly collaborative environment with skilled and super friendly teammates
We will fully support you in developing software the right way
We won't burden you with useless policies and procedures
We will provide you the tools you need to do your job right
If that sounds attractive please apply! We'd love to talk to you.
Here are some more details about the position:
You will be hands-on writing code, unit tests, and performing peer code reviews. You will work with a project manager, software development engineers, user experience and interface designers, quality assurance engineers and customer stakeholders to deliver high quality, scalable and maintainable software solutions.
Required Qualifications
4+ years experience developing web applications using PHP
Ability to work effectively with offshore and nearshore team members
Experience performing peer code reviews
Experience writing unit tests
Experience with Git and merge conflict resolution
JavaScript and HTML, CSS
Ajax, Restful APIs and JSON
SQL (MSSQL, MySQL or similar)
Scalable Architectural Patterns
API Integrations
Asynchronous Processes and Multithreading
Desired Qualifications
5+ year of experience developing web applications.
Experience in Codeigniter PHP framework
Experience with React and Flux
frameworks like Angular, React, Bootstrap, Ember or similar
Experience working with offshore and nearshore development teams.
HTML 5 and CSS 3
Caching Technologies
Cloud Platforms (AWS, Azure, or Heroku)
Serverless technologies
IoC / Dependency Injection
Continuous Integration
Continuous delivery
Git
SourceTree and Bitbucket
Scrum
Project management software - Jira, Rally or similar
Virtual Machines
Postman
Strong proficiency with JavaScript
Knowledge of Node.js , react js and frameworks available for it.
Understanding the nature of asynchronous programming and its quirks and workarounds
Good understanding of server-side templating languages
Good understanding of server-side CSS preprocessors
Basic understanding of front-end technologies, such as HTML5, and CSS3
Understanding accessibility and security compliance
User authentication and authorization between multiple systems, servers, and environments
Integration of multiple data sources and databases into one system
Understanding fundamental design principles behind a scalable application
Understanding differences between multiple delivery platforms, such as mobile vs. desktop, and optimizing output to match the specific platform.
Knowledge on Blockchain development is added advantage.
Previous Experience in .Net or PHP is a Plus
Experience : 1.5 to 4 years
Location : Mumbai / work from home for other Locations
Immediate joiner
*Candidate has knowledge of typescript will be most preferrable.*









