Backend Developer

Job Title : Python Backend Engineer (with MLOps & LLMOps Experience)

Experience : 4 to 8 Years

Location : Gurgaon Sector - 43

Employment Type : Full-time

Job Summary :

We are looking for an experienced Python Backend Engineer with a strong background in FastAPI, Django, and hands-on exposure to MLOps and LLMOps practices.

The ideal candidate will be responsible for building scalable backend solutions, integrating AI/ML models into production environments, and implementing efficient pipelines for machine learning and large language model operations.

Mandatory Skills : Python, FastAPI, Django, MLOps, LLMOps, REST API development, Docker, Kubernetes, Cloud (AWS/Azure/GCP), CI/CD.

Key Responsibilities :

• Develop, optimize, and maintain backend services using Python (FastAPI, Django).
• Design and implement API endpoints for high-performance and secure data exchange.
• Collaborate with data science teams to deploy ML/LLM models into production using MLOps/LLMOps best practices.
• Build and manage CI/CD pipelines for ML models and ensure seamless integration with backend systems.
• Implement model monitoring, versioning, and retraining workflows for machine learning and large language models.
• Optimize backend performance for scalability and reliability in AI-driven applications.
• Work with Docker, Kubernetes, and cloud platforms (AWS/Azure/GCP) for deployment and orchestration.
• Ensure best practices in code quality, testing, and security for all backend and model deployment workflows.

Required Skills & Qualifications :

• 4 to 8 years of experience as a Backend Engineer with strong expertise in Python.
• Proficient in FastAPI and Django frameworks for API and backend development.
• Hands-on experience with MLOps and LLMOps workflows (model deployment, monitoring, scaling).
• Familiarity with machine learning model lifecycle and integration into production systems.
• Strong knowledge of RESTful APIs, microservices architecture, and asynchronous programming.
• Experience with Docker, Kubernetes, and cloud environments (AWS, Azure, or GCP).
• Exposure to CI/CD pipelines and DevOps tools.
• Good understanding of Git, version control, and testing frameworks.

Nice to Have :

• Experience with LangChain, Hugging Face, or similar LLM frameworks.
• Knowledge of data pipelines, feature engineering, and ML frameworks (TensorFlow, PyTorch, etc.).
• Understanding of vector databases (Pinecone, Chroma, etc.).

Education :

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.

Backend Engineer at Reo.Dev : Job Description

[Disclaimer: This is a longish read. However, we felt you might be interested to read in detail, about what you could be doing for the next 5ish years 😊]

Job Function: Backend Engineer

Experience: 2 – 4 years [number of years of experience is not a filter]

Salary and Incentives: Open for discussion

Location: Bangalore, India [Hybrid work - Remote + Office]

👋 Meet Reo.Dev

• Reo.Dev was founded in January 2023. So we are quite young 😊
• Reo was started by Achintya, Gaurav and Piyush – All of them have successfully built companies before [more on the Founding team below]
• We are building a Revenue Operating System for the Developer Focussed Companies (Think of us like a 6sense.com for Dev Focussed Companies).
• What we are building is quite innovative. Currently, no other company offers the capabilities Reo.Dev is building
• We recently closed our Seed round with top early stage investors (not disclosed yet)

Key Responsibilities

• Design and develop backend services using Django and Python.

• Architect and implement microservices-based solutions for scalability and maintainability.

• Work with PostgreSQL and Redis for efficient data storage and caching.

• Build and maintain RESTful APIs and ensure robust API design principles.

• Implement system design best practices for high availability and fault tolerance.

• Containerize applications using Docker and manage deployments with Kubernetes.

• Integrate with cloud platforms (AWS/Azure) for hosting and infrastructure management.

• Apply security best practices to protect data and application integrity.

• Collaborate with frontend, QA, and DevOps teams for seamless delivery.

• Mentor junior developers and conduct code reviews to maintain quality standards. 

Required Skills & Expertise

• Django/Python – Advanced proficiency in backend development.

Microservices Architecture – Strong understanding of distributed systems.

• PostgreSQL & Redis – Expertise in relational and in-memory databases.

• Docker/Kubernetes – Hands-on experience with containerization and orchestration.

• API Design & System Design – Ability to design scalable and secure systems.

• Cloud (AWS/Azure) – Practical experience with cloud services and deployments.

• Security Best Practices – Knowledge of authentication, authorization, and data protection.

About Blitzy

Blitzy is a Cambridge, MA based AI software development platform on a mission to revolutionize the software development life cycle by autonomously building custom software to unlock the next industrial revolution. We're transforming how enterprises build software, turning enterprise requirements into production-ready code with an agentic software development platform that can autonomously execute 80% of the quantum of software development work. We're backed by multiple tier 1 investors, and have proven success as founders of previous start-ups.

The Role

We're seeking an experienced POC Engineer to join our India HQ2 team. This critical role sits at the intersection of cutting-edge AI technology and enterprise customer success. You'll lead the technical design, development, and delivery of proof-of-concept implementations that demonstrate the transformative power of Blitzy's agentic software development platform to Fortune 500 clients. This role requires deep technical expertise, strong customer-facing skills, and the ability to rapidly prototype and iterate on complex AI-driven solutions.

What You'll Do

• Lead Technical Pilots and POCs: Design, architect, and implement end-to-end proof-of-concept solutions that showcase Blitzy's platform capabilities to enterprise customers
• Customer Collaboration: Work directly with Fortune 500 clients to understand their technical requirements, challenges, and success criteria for POC engagements
• Rapid Prototyping: Build functional demonstrations and prototypes that prove technical feasibility and business value, often under tight timelines
• AI/ML Integration: Leverage LLMs, agentic workflows, and multimodal AI capabilities to solve complex customer use cases
• Technical Architecture: Design scalable, production-grade architectures that can transition from POC to full implementation
• Performance Optimization: Conduct performance analysis, identify bottlenecks, and optimize solutions for speed, efficiency, and reliability
• Documentation & Knowledge Transfer: Create comprehensive technical documentation and effectively communicate architecture decisions to both technical and non-technical stakeholders
• Cross-functional Collaboration: Partner with Sales, Product, and Engineering teams to refine platform capabilities based on customer feedback
• Innovation Leadership: Stay at the forefront of AI/ML advances and identify opportunities to incorporate new techniques into POC solutions

What We're Looking For

Required Qualifications

• 10+ years of software engineering experience with proven track record in enterprise software development and production systems
• Deep expertise in AI/ML technologies, particularly with LLMs, agentic systems, and generative AI applications
• Strong background in building enterprise-grade solutions that have shipped to production
• Extensive experience with modern software architecture, including cloud-based platforms (AWS, GCP, or Azure)
• Proficiency in multiple programming languages (Python, TypeScript/JavaScript, Go, Java, or C++)
• Demonstrated experience leading technical teams and mentoring engineers
• Proven ability to translate complex technical concepts for diverse audiences
• Track record of working directly with enterprise customers in technical consulting or solutions engineering capacity
• Strong analytical and problem-solving skills with focus on performance optimization
• Excellent communication skills with ability to present to C-level executives

Preferred Qualifications

• Background in developing AI agentic workflow orchestrators or similar multi-agent systems
• Experience with GPU-based computing and optimization
• Experience with sequence-to-sequence models and deep neural network architectures
• M.S. or Ph.D. in Computer Science, Engineering, or related field
• Experience leading distributed teams across geographies
• Track record of innovation (patents, publications, or open-source contributions)
• Experience with Responsible AI practices and frameworks

Key Success Metrics

• Successfully deliver POCs that convert to paid customer engagements
• Achieve high customer satisfaction scores and build strong customer relationships
• Reduce time-to-value for POC implementations through reusable frameworks and components
• Contribute technical insights that improve core platform capabilities
• Build scalable POC processes and best practices for the India team

Our Culture

Who we are: Led by two pioneering co-founders we are one of the fastest growing companies in the U.S., creating our own category of enterprise autonomous software development. We automate thousands of hours of software development for our customers, which includes strong representation within the Fortune 500.

How we work:

• We move Blitzy Fast: Time is both our company's and our clients' most precious asset. We move quickly and decisively to innovate internally and deliver exceptional software externally.
• Championship Mindset: We operate like a professional sports team. We win as a team by holding ourselves and each other to high standards, collaborating in-person, and remaining focused on the mission.
• Passion for Invention: We're pushing the frontier of what's possible, requiring constant innovation and iteration.
• We Work for the Customer: We focus on delivering outsized value to the customers we work with and expanding those relationships into deep, meaningful partnerships.

We believe in being 'everyday athletes'—taking care of ourselves so we can bring our best minds to work. We promote great sleep, movement, and restorative activities for optimal mental performance. It makes for a happier and more productive team.

What We Offer

• Opportunity to shape Blitzy's expansion in India as a founding member of HQ2
• Work with cutting-edge AI technology and Fortune 500 enterprise clients
• Competitive compensation package including equity
• Collaborative, high-performance team environment
• Professional growth opportunities in a fast-scaling startup
• Chance to make significant impact on product direction through customer insights
• Culture that values innovation, technical excellence, and work-life balance

Must Have:

• Thorough experience (Sr. Developer: 3+ years) in core python as well as the Django framework.
• Deep understanding of designing and implementing REST web services/APIs.
• Ability to address authentication and security constraints efficiently.
• Knowledge about Amazon web services and ability to integrate it.
• Ability to write complex python utility scripts.
• Ability to deliver design documentations whenever needed.
• Knowledge of Version Control using SVN/GIT.
• Ability to analyse, debug and resolve basic to complex problems on-demand (independently).

Nice To Have:

• Knowledge with microservice architecture is a BIG plus.
• Knowledge of the docker platform to serve the applications in docker containers and being able to use docker compose will be a plus.
• Leadership and Time Management skills.

• Experience in Node.js Frameworks
• Hands-on experience with MongoDB
• Strong proficiency with JavaScript, Socket IO, ExpressJS & SailsJS
• Experience working with third-party developer tools, including documentation, APIs, and SDKs
• Good Grasp of Asynchronous Programming and Its Workarounds
• Database Schema design for Business Processes
• Working Knowledge of JWT-based passport Authentication
• Can Write and Refactor Efficient Codes
• Experience in Implementing Data Protection
• Must have demonstrated the ability to deliver high-quality products on time
• Knowledge of GIT, SVN technology

• Strong proficiency with JavaScript 
• Knowledge of Node.js and frameworks available for it 
• A good understanding of the nature of asynchronous programming, its challenges, 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 of accessibility and security compliance 
• Experience in user authentication and authorization between multiple systems, servers, and environments
• Proficiency in API integrations
• Understanding of fundamental design and architecture principles to scale an 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
• A degree in any discipline
• Good communication and team skills
• Ability to listen to the requirements of team members and clients and translate them into great solutions

Roles and Responsibilities:

6+ Experience in  Node.js, React Js

excellent written and verbal communication skill

• Healthy team and relationship building skills
• Hands-on experience delivering web applications in the cloud to on-demand production clients
• Experience in JavaScript, OOP Patterns, ES6, HTML, CSS, LESS
• Experience with  MS Sql Server, Mongo DB
• Experience with SSO, SAML, OAuth, JWT for API and Web Session Authentication and Authorization
• Experience with Azure Devops platform will be an added advantage
• Experience with test and/or process automation, source control
• Possess solid debugging process and exhibit technical intuition