
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.

About Lookup
About
Join Us in Building the Search Engine for Video 🔭
At lookup, we believe the world's most valuable data asset is trapped. Video is everywhere, but it's unsearchable—a black box of insight that no one can open. We’re changing that. We're building the search engine for the visual world, so anyone can find a single moment in a mountain of footage, ask + analyse any video and autonomously take decisions from teaching our machines to watch a video.
Our Mission
To make video as accessible to machines as text and voice are today.
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.
When video is truly accessible to machines, it doesn't just mean a person can finally search their archives. It means an entirely new generation of automated workflows, creative tools, and intelligent applications can be built. We are not just building an app; we are building the API for software to see the world!
The lookup Engine: The Core Platform
At its core, lookup is a hardware-agnostic, API-first platform designed to do for unstructured video what a database does for structured data. Our proprietary platform ingests any video feed and transforms it into a rich, structured index. Every element—dialogue, on-screen text, objects, and actions—is cataloged, creating a queryable asset that allows users to ask complex questions about their visual content and receive answers in milliseconds.
Our Launch: "Ask Video Anything"
We published our "Ask Video Anything" engine. This public beta showcased our first-vision understanding, general-purpose model—a multi-modal AI optimized for the core tasks of Content Discovery and Visual Question Answering (VQA).
Tech stack
Candid answers by the company
At its core, lookup is a hardware-agnostic, API-first platform designed to do for unstructured video what a database does for structured data. Our proprietary platform ingests any video feed and transforms it into a rich, structured index. Every element—dialogue, on-screen text, objects, and actions—is cataloged, creating a queryable asset that allows users to ask complex questions about their visual content and receive answers in milliseconds.
Connect with the team
Similar jobs
Proficient in Golang, Python, Java, C++, or Ruby (at least one)
Strong grasp of system design, data structures, and algorithms
Experience with RESTful APIs, relational and NoSQL databases
Proven ability to mentor developers and drive quality delivery
Track record of building high-performance, scalable systems
Excellent communication and problem-solving skills
Experience in consulting or contractor roles is a plus
-
Preferred Education & Experience:
-
Bachelor’s or master’s degree in Computer Engineering, Computer Science, Computer Applications, Mathematics, Statistics or related technical field or equivalent practical experience. Relevant experience of at least 3 years in lieu of above if from a different stream of education.
-
Well-versed in and 5+ years of hands-on demonstrable experience with:
▪ Object Oriented Modeling, Design, & Programming
▪ Microservices Architecture, API Design, & Implementation
▪ Relational, Document, & Graph Data Modeling, Design, & Implementation -
Well-versed in and hands-on demonstrable experience with:
▪ Stream & Batch Big Data Pipeline Processing
▪ Distributed Cloud Native Computing
▪ Serverless Computing & Cloud Functions -
5+ years of hands-on development experience in Java programming.
-
3+ years of hands-on development experience in one or more libraries & frameworks such as Spring Boot, Apache Camel, Akka, etc.;
extra points if you can demonstrate your knowledge with working examples.
2+ years of hands-on development experience in one or more Relational and NoSQL datastores such as Amazon S3, Amazon DocumentDB, Amazon Elasticsearch Service, Amazon Aurora, AWS DynamoDB, Amazon Athena, etc. -
2+ years of hands-on development experience in one or more technologies such as Amazon Simple Queue Service, Amazon Kinesis, Apache Kafka, AWS Lambda, AWS Batch, AWS Glue, AWS Step Functions, Amazon API Gateway, etc.
-
2+ years of hands-on development experience in one or more technologies such as AWS Developer Tools, AWS Management & Governance, AWS Networking and Content Delivery, AWS Security, Identity, and Compliance, etc.
-
Well-versed in Virtualization & Containerization; must demonstrate experience in technologies such as Kubernetes, Istio, Docker, OpenShift, Anthos, Oracle VirtualBox, Vagrant, etc.
-
Well-versed with demonstrable working experience with API Management, API Gateway, Service Mesh, Identity & Access Management, Data Protection & Encryption.
-
Hands-on experience with demonstrable working experience with DevOps tools and platforms viz., Jira, GIT, Jenkins, Code Quality & Security Plugins, Maven, Artifactory, Terraform, Ansible/Chef/Puppet, Spinnaker, etc.
-
Well-versed with Storage, Networks and Storage Networking basics which will enable you to work in a Cloud environment.
-
Experience : 5+Years
-
Job Location : Remote/Pune
Senior Node JS developer
Job Description
- Working experience in Nodejs, MySQL, Postgres SQL
- Good knowledge of designing and writing restful API
- Working experience of GIT
- Will prefer candidates who have knowledge of GraphQL, Typescript
- Well-versed and experienced with unit testing, code coverage.
- Well versed with SOILD design principles and their application
- Knowledge of AuthO, typeORM required
- Good to have – some experience with Azure DevOps and/or azure functions.
-Working experience on Docker- good to have
Job Description
We are looking for a ROR developer. If you're a creative problem solver who is eager to develop amazing products and hungry for a new adventure, a word class workplace is waiting for you in the heart of Bengaluru / Kolkata or remote.
- Production experience in Ruby.
- A completed technical degree in Computer Science or any related fields.
- 3+ years of professional product development experience.
- Being comfortable with microservices architectures, API-based
- You are a pragmatic programmer who understands what is needed to get things done.
- Problem solving and collaborative mindset.
- Experience working with DevOps (Docker, Kubernetes, Terraform).
- Experience with AWS (RDS, DDB, Lambda, CW, EC2, SQS, SNS, Cognito, Kinesis).
- Experience with performance improvements (Caching Techniques, SQL Query Optimization, Performance monitoring and profiling.
- Deep understanding of service-oriented and microservices architectural patterns, troubleshooting methods and best practices.
- Takes end to end ownership of the development and operation of complete features.
What we look for:
- Strong analytical and problem-solving skills
- Hands on programming work in Advance Java, Springs, Spring Boot framework,
- Ability to independently work on complex business requirements
- Ability to communicate clearly and concisely
What will you do:
You will independently work on designing and developing solutions that solve customer’s business problems. You will own the assigned problem statements, evaluate multiple technical approaches and use design-thinking to take independent decisions while implementing the solution. You will also guide junior members of the team and participate in code and design review process.
Who should apply:
You have -
- a graduate degree in BE, BTech, MTech, MCA from a reputed institute
- 5 to 7 years of hands-on experience in programming Core Java 8, Spring Boot, Spring Rest Template, Spring Security, Spring Data, Spring JDBC Template
- Good to Have experience/knowledge on Docker, Oracle, MongoDB, Quartz Scheduler, Shell scripting
- Working experience with Windows, Linux environments
What will I be doing? 👩💻👨💻
Leading parts of the product from inception to launch, and own large parts of the product’s execution.
Working with our Sales and frontend team to build products with the goal of delighting and increasing the success of our users.
Architecting, building, testing, and releasing product-facing features.
Contributing to our side projects and free tools for the education industry.
What do I need? 🤓
1-2 years of industry experience in a software engineering role, preferably building a SaaS product. You can demonstrate significant impact that your work has had on the product and/or the team.
Deep knowledge of a high-level programming language (for example, PHP, Python, etc.) but it doesn’t need to be a language that we use here! Great people are effective and learn what we use quickly (or introduce us to better ways of working)
Deep knowledge of SQL Databases
Experience with scalable distributed systems, both built from scratch as well as on AWS primitives
Willingness to learn and use new technologies
Extremely data-driven
Ability to debug complex systems
Brownie points 🍰
Using a framework (for example, Laravel, Code Igniter, Django)
Understanding of containerisation (Docker/Kubernetes) along with ability to deploy to AWS ECS (or similar tools)
Feel free to apply even if you feel unsure about whether you meet every single requirement in this posting. As long as you're a quick learner, and are excited about changing the status quo for tech recruitment, we're happy to support you as you come up to speed with our tech stack.
Perks 😍
Flexible vacation
Take a tutorial, on us
Monthly remote meals
Tech stack 🔨
PHP
Laravel
NodeJS
VueJS
Ionic Angular
Digital Ocean
AWS
MySQL
Why Classcard? 🚀
We are still in the early stages of our journey. You will be working closely with our users, acting on both their feedback and what our data says. Things you build here will have tremendous impact on both our business and Classcard as a company.
What happens after I apply? 🤔
-
Quick phone call with a member of our engineering team to find out more about your experience and why you want to work at Classcard.
-
Video interview:
Technical discussion with a senior engineer
Pairing on an interesting problem
Meet the founders
Rejolut is among the fastest-growing and award winning Tech companies working on leading technologies namely Blockchain, Machine Learning & Artificial Intelligence, Complex mobile & Web Apps, IoT, etc.Rejolut is a venture-backed company with clients in over several countries namely Malaysia Airlines,gba global,my-earth,biomes, Dlg-hub,etc.
We are looking for Tech geeks having hands-on experience and in love with building scalable, distributed and large web/mobile products and tech solutions. He/She must be an excellent problem solver with passion to self-learn and implement web technologies (frontend + backend). He/She would be responsible for the architecture design, code review, and technology build and deployment activities of the product.
Responsibilities:-
- Own the product development from scratch.
- Architect scalable, distributed and large-scale web and mobile solutions from scratch.
- Code for fresh development and to troubleshoot and resolve issues.
- Writing reusable, testable, and efficient code.
- Creating database schemas that represent and support business processes.
- Design and implementation of low-latency, high-availability, and performant applications.
- Able to learn & implement new technology/framework/library at God Speed.
- Customer-focused, react well to changes, work with teams and be able to multitask.
- Experience and knowledge of open-source tools and frameworks, broader cutting edge technologies around server side development.
Desired Candidate Profile:-
- A Bachelor's degree in Computer Science or related field(or combined with related experience)
- Strong Expertise in Node.js/Javascript
- Hands-on experience in writing Node.js applications
- Deep knowledge of Restful APIs, Web Services, command-line programs and solid design principles.
- Knowledge of Node.js and frameworks like Express.js,Sails.js,StrongLoop, Meteor,Loopback.js, etc
- Knowledge of SQL and NoSQL database(MongoDB)
- Knowledge of tools like Docker, Git, Postman, JSdocs, etc.
- Well versed with front-end technologies - HTML5, and CSS3, AWS, GCP, Azure, Good hold on CLI command, OS
- Proficiency in multiple programming languages, both dynamic(Javascript, Python, Ruby, etc.) and strongly typed object-oriented language.
- Implementing automated testing platforms and unit tests.
- Must be a proven performer and team player that enjoys challenging assignments in a high energy, fast growing and start-up workplace.
- Good communication and interpersonal skills
Rejolut - As a Career Differentiator
- We are a young and dynamic team who are obsessed with solving futuristic and evolutionary business problems at scale with the next generation technology like blockchain, crypto and machine learning. Focuses on empowering people across the globe to be technically efficient, making advancements in technology and providing new capabilities that were previously thought impossible.
- We provide exposure to higher learning opportunities so that you can work on complex and cutting edge technology like React, React Native, Flutter, NodeJS, Python, Go, Svelte, WebAssembly. Strong expertise in blockchain and crypto technology and working with the networks like Hedera Hashgraph, Tezos, BlockApps, Algorand, Cardano.
- We maintain high end transparency with clients and employees as Visibility unlocks Efficiency and trust unlocks Visibility.
- Company is backed by two technology Co-founders, well-versed with consumer applications and their work has been downloaded millions of times and have led teams in leadership positions in companies like Samsung, Purplle, Loylty Rewardz.
Benefits :
> Health Insurance
> Work from Home
> Fast growth and more visibility into the company
> Experience to work on the latest technology
> Competitive Learning Environment with supportive co-workers
> Employee friendly HR Policies
> Paid leaves up to certain limits
> Competitive salaries & Bonuses
> Liberal working atmosphere
> Get mentored by the best in the industry
Schedule:
- Day Shift/Flexible working hours
- Monday to Friday
• Strong Nodejs experience with knowledge and understanding of ES6/7/8.
• Experience with DevOps.
• Understanding multi-threading concepts.
• Experience with NoSQL Databases.
• Proficiency with code versioning tools, such as Git, Github, Bitbucket.
• Experience working with common project management tools and Agile
development workflow
• Ingenuity, creativity, drive and determination are a must
Responsibilities:
- Should be able to write web services for the app.
- Manage projects from conceptualization, all the way through deployments by collaborating with everyone.
- Take initiatives to optimize.
- Keep up with the latest trends and tools and keep updating.
Our Tech Stack:
- On the backend, we use Node JS
- For the frontend, we use React
Skills
Mandatory:
Nodejs, Mongo DB, Express js, AWS Experience, Experience with mail, and phone authentication.
Must have exp in kafka and integrating with other data sources










