Backend Developer

Python Software Engineer (3–5 Years Experience)

Location: [Pune]

Role Overview

We are seeking skilled Python engineers to join our core product team. You will work on backend services, API development, and system integrations, contributing to a codebase of over 250,000 Python lines and collaborating with frontend, DevOps, and native code teams.

Key Responsibilities

·    Design, develop, and maintain scalable Python backend services and APIs

·    Optimize performance and reliability of large, distributed systems

·    Collaborate with frontend (JS/HTML/CSS) and native (C/C++/C#) teams

·    Write unit/integration tests and participate in code reviews

·    Troubleshoot production issues and implement robust solutions

Required Skills

·    3–5 years of professional Python development experience

·    Strong understanding of OOP, design patterns, and modular code structure

·    Experience with MongoDB (PyMongo), Mako, RESTful APIs, and asynchronous programming

·    Familiarity with code quality tools (flake8, pylint) and test frameworks (pytest, unittest)

·    Experience with Git and collaborative development workflows

·    Ability to read and refactor large, multi-module codebases

Nice to Have

·    Experience with web frameworks (web.py, Flask, Django)

·    Knowledge of C/C++ or C# for cross-platform integrations

·    Familiarity with CI/CD, Docker, and cloud deployment

·    Exposure to security, encryption, or enterprise SaaS products

What We Offer

·    Opportunity to work on a mission-critical, enterprise-scale product

·    Collaborative, growth-oriented engineering culture

·    Flexible work arrangements (remote/hybrid)

·    Competitive compensation and benefits

We’re seeking a Back-End Developer with hands-on experience in Node.js or any other modern backend framework. You’ll be responsible for building robust, scalable APIs and server-side logic powering Zilo’s high-velocity quick commerce platform.

Key Responsibilities

Develop, maintain, and optimize back-end applications and APIs.

Work on microservices, API integrations, and data modeling.

Ensure system scalability, reliability, and performance under high traffic.

Collaborate with front-end and mobile developers for seamless API integration.

Implement best practices in code quality, security, and database design.

Troubleshoot production issues and support deployment cycles.

Technical Skills Required

Strong proficiency in Node.js, Express.js, or similar backend frameworks.

Experience in MongoDB, MySQL, or PostgreSQL.

Understanding of RESTful APIs, authentication (JWT/OAuth), and middleware.

Familiarity with AWS, Docker, or other deployment environments.

Hands-on experience with Git and CI/CD pipelines.

Knowledge of other programming languages like Python, Java, or Go is an added advantage.

Our Mission

To make video as accessible to machines as text and voice are today.

At lookup, we believe the world's most valuable asset is trapped. Video is everywhere, but it's unsearchable—a black box of insight that no one can open or atleast open affordably. We’re changing that. We're building the search engine for the visual world, so anyone can find or do anything with video just by asking.

Text is queryable. Voice is transcribed. Video, the largest and richest data source of all, is still a black box. A computer can't understand it, and so its value remains trapped.

Our mission at lookup is to fix this.

About the Role

We are looking for founding Backend Engineers to build a highly performant, reliable, and scalable API platform that makes enterprise video knowledge readily available for video search, summarization, and natural‑language Q&A. You will partner closely with our ML team working on vision‑language models to productionize research and deliver fast, trustworthy APIs for customers.

Examples of technical challenges you will work on include: distributed video storage, a unified application framework and data model for indexing large video libraries, low‑latency clip retrieval, vector search at scale, and end‑to‑end build, test, deploy, and observability in cloud environments.

What You’ll Do:

• Design and build robust backend services and APIs (REST, gRPC) for vector search, video summarization, and video Q&A.
• Own API performance and reliability, including low‑latency retrieval, pagination, rate limiting, and backwards‑compatible versioning.
• Design schemas and tune queries in Postgres, and integrate with unstructured storage.
• Implement observability across metrics, logs, and traces. Set error budgets and SLOs.
• Write clear design docs and ship high‑quality, well‑tested code.
• Collaborate with ML engineers to integrate and productionize VLMs and retrieval pipelines.
• Take ownership of architecture from inception to production launch.

Who You Are:

• 3+ years of professional experience in backend development.
• Proven experience building and scaling polished WebSocket, gRPC, and REST APIs.
• Exposure to distributed systems and container orchestration (Docker and Kubernetes).
• Hands‑on experience with AWS.
• Strong knowledge of SQL (Postgres) and NoSQL (e.g., Cassandra), including schema design, query optimization, and scaling.
• Familiarity with our stack is a plus, but not mandatory: Python (FastAPI), Celery, Kafka, Postgres, Redis, Weaviate, React.
• Ability to diagnose complex issues, identify root causes, and implement effective fixes.
• Comfortable working in a fast‑paced startup environment.

Nice to have:

• Hands-on work with LLM agents, vector embeddings, or RAG applications.
• Building video streaming pipelines and storage systems at scale (FFmpeg, RTSP, WebRTC).
• Proficiency with modern frontend frameworks (React, TypeScript, Tailwind CSS) and responsive UI design.

Location & Culture

• Full-time, in-office role in Bangalore (we’re building fast and hands-on).
• Must be comfortable with a high-paced environment and collaboration across PST time zones for our US customers and investors.
• Expect startup speed — daily founder syncs, rapid design-to-prototype cycles, and a culture of deep ownership.

Why You’ll Love This Role

• Work on the frontier of video understanding and real-world AI — products that can redefine trust and automation.
• Build core APIs that make video queryable and power real customer use.
• Own systems end to end: performance, reliability, and developer experience.
• Work closely with founders and collaborate in person in Bangalore.
• Competitive salary with meaningful early equity.

As a back-end developer, you’ll work on our back-end app that is built with Ruby on Rails. You’ll help to plan and develop new features, review other people’s code, fix bugs, help in technological and business decisions, and support the internal team.

Responsibilities

• Work in our main app back end built with Ruby on Rails
• Act as an architect of new features
• Review other people's code
• Fix bugs
• Help in decisions of technology and business
• Support internal team
• Refactor code

Requirements

• At least 3 years of industry experience
• At least 1 year of experience working on Ruby on Rails projects
• Comfortable in dealing with server infrastructure and deployment processes
• Experience with continuous delivery and automated testing.
• Experience with refactoring Ruby on Rails applications
• Experience in designing, developing and maintaining APIs
• Can work for at least a couple of hours during Japanese business hours

Nice to haves

These aren’t required, but be sure to mention them in your application if you have them.

• UI/UX design principles
• Good understanding of coding best practices and design patterns
• Understanding of security technologies (encryption, authentication, OAuth 2.0)
• Contribution to open source projects
• Interest and ability to learn other coding languages as needed
• Agile Development experience

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.

• Implement best practices for the engineering team across code hygiene, overall architecture design, testing, and deployment activities
• Drive technical decisions for building data pipelines, data lakes, and analyst access.
• Act as a leader within the engineering team, providing support and mentorship for teammates across functions
• Bachelor’s Degree in Computer Science or equivalent job experience
• Experienced developer in large data environments
• Experience using Git productively in a team environment
• Experience with Docker
• Experience with Amazon Web Services
• Ability to sit with business or technical SMEs to listen, learn and propose technical solutions to business problems

·       Experience using and adapting to new technologies

·       Take and understand business requirements and goals

·       Work collaboratively with project managers and stakeholders to make sure that all aspects of the project are delivered as planned

·       Strong SQL skills with MySQL or PostgreSQL

• Experience with non-relational databases and their role in web architectures desired

 Knowledge and Experience:

• Good experience with Elixir and functional programming a plus

• Several years of python experience
• Excellent analytical and problem-solving skills
• Excellent organizational skills

Proven verbal and written cross-department and customer communication skills

Job Description:

• In depth knowledge of NodeJS, ExpressJS, Mongo DB

• Experience implementing applications using React

• Experience creating front end applications using HTML5, React, Saga

• Hands on experience with JavaScript Development on both client and server-side

• Experience with modern frameworks and design patterns

• Experience in using Github / Bitbucket

• Knowledge of using AWS and deploying applications on AWS

JOB SUMMARY

     THE ROLE IN SUMMARY

Omnicom Media Group (OMG) has an immediate opening for a highly motivated and talented backend web application developer, specializing in AWS cloud technologies. In this position you will be joining an in-house development team whose primary responsibility is developing new features and functionality for multiple existing web applications and day to day troubleshooting and issue resolution. The ideal candidate will possess excellent critical thinking and troubleshooting skills and have proven experience using popular AWS services commonly used to build serverless web application architectures. Candidates are expected to have strong knowledge of AWS API Gateway, Lambda, DynamoDB and Python programming. Familiarity with Cloud infrastructure as code frameworks, such as Serverless Framework, Terraform or CloudFormation, etc. is also required. Excellent English communication skills are a must as you will be a part of a team working alongside our primary development team in addition to several business analysis and project managers. 5+ years of prior backend and Cloud web application and software development experience required.

KEY WORKING PRINCIPLES

• Passionate about modern web application architecture and programming. Hands on backend developer.
• Prior experience with modern RESTful API design and implementation. Microservices and single page web applications.
• Strong AWS knowledge, specifically serverless technologies (S3, API Gateway, Lambda, IAM, DynamoDB) as they relate to web application development.
• Excellent knowledge of web application security fundamentals (identity management, authentication, authorization, SSO).
• Designed several application databases in SQL and at least one non-relational database system, preferably
• Familiarity with DevOps practices including continuous integration and deployment, infrastructure as code in preferably Serverless Framework.
• Excellent verbal and written communication skills.
• 5+ years professional software development experience.
• Bachler’s degree in computer science or related field.

MUST HAVE SKILLS

• Backend Web Application Development
• Python
• AWS Services Including, CloudFront, S3, API Gateway, Lambda, Step Functions, SES, DynamoDB, Serverless Framework
• AWS Identity and Access Management principles (IAM)
• SQL (MS SQL Server, PostgreSQL, AWS Aurora or comparable)
• GIT, JIRA, Agile / Scrum

NICE TO HAVE SKILLS

• AWS Cognito