Lead Data Engineer

Job Title : QA Engineer – Web3/Blockchain

Experience : 3+ Years

Location : Noida Sector 18

Job Type : Full Time

Job Summary :

We are seeking a skilled QA Engineer with hands-on experience in testing Blockchain/Web3 projects such as wallets, DApps, and related decentralized applications. The ideal candidate should be detail-oriented, proactive, and passionate about ensuring the quality and reliability of Web3 solutions.

Mandatory Skills : QA testing of Web3 wallets, DApps, smart contracts, blockchain transactions, and API testing (Postman/Swagger).

Responsibilities :

• Design, develop, and execute test cases for Web3 wallets, DApps, and smart contract integrations.
• Perform functional, regression, API, and end-to-end testing of blockchain applications.
• Validate transactions, gas fees, wallet functionalities, and blockchain data consistency.
• Collaborate with developers, product managers, and other stakeholders to identify and resolve issues.
• Work with automation tools (if applicable) to enhance QA efficiency.

Requirements :

• 3+ years of QA/testing experience with a focus on Blockchain/Web3 applications.
• Strong knowledge of wallets (MetaMask, Trust Wallet, etc.) and DApps.
• Understanding of smart contracts, Ethereum, and blockchain fundamentals.
• Experience with API testing tools (Postman/Swagger) and bug tracking systems (Jira, etc.).
• Good problem-solving and communication skills.

Core AI Backend Engineer – LLM Fine-Tuning

You know that moment when you don’t just debug code — you train a model, fine-tune it, and suddenly it understands your domain better than you expected? That’s the kind of magic we’re looking for.

We’re building something that turns chaotic social video data into crystal-clear business intelligence. Not just another API — but AI-backed architecture fine-tuned to our world. Systems that marketing teams thank you for, because they feel the intelligence, not just the infrastructure.

Either you feel the craft when you read this, or you don’t. This isn’t just another backend role. This is where you bring together scalable systems and cutting-edge LLMs to build something the world hasn’t seen before.

Who We Are

We’re a small, global team that ships fast. Every line of code and every model choice affects millions of video analysis requests.

Our engineers don’t just build APIs — they architect solutions, they optimize at scale, and now, they fine-tune models to make AI work in the real world. Our CPTO still codes. Our senior engineers make complexity look effortless. Our backend team sets a standard that others ask how we move so fast.

What We Need

We need someone who’s lived both sides of this life:

• Backend excellence: building high-scale, high-performance systems.
• LLM fine-tuning: hands-on with open-source models, not just calling APIs.

Someone who can sit with a requirement at 2pm and by 6pm not only has endpoints working, but also has a fine-tuned model running behind them — customized to our use case.

Your Craft

• JavaScript/TypeScript & NodeJS as core backend tools.
• Next.js for full-stack where needed.
• Rust when performance is non-negotiable.
• Golang/Python as comfortable tools of choice.
• MySQL/Postgres/Redis — wielded with intention.
• AWS ecosystem — your playground, not your puzzle.
• LLM/AI integration you’ve actually shipped.
• Open-source LLM fine-tuning experience:
• Bringing in open-source models (LLaMA, Mistral, Falcon, etc.).
• Fine-tuning/adapting them for specific domains.
• Optimizing for inference cost, latency, and accuracy.

The Reality

The work is beautifully complex. The scale is real and growing. The problems are the kind that wake you up at 3am with solutions.

If you get your energy from building backend systems and adapting LLMs to make them smarter for real-world use, you’ll probably fall in love with what we do. If you’re only interested in APIs without touching models, this won’t be your thing — and that’s completely okay.

How to Apply

If you’re reading this thinking “finally, a team that actually cares about real AI engineering” — we’d love to see something you’ve built.

Not just a resume. Show us your craft:

• An LLM fine-tuning repo.
• A domain-adapted model you worked on.
• A system design where you combined backend and AI.
• Or even a short write-up or voice note explaining what you’ve fine-tuned.

We’re genuinely excited to see what you’ve done and have a meaningful conversation about whether this could be magic for both of us.

Responsibilities:

 Ensure product delivery is fast, low-cost and sustainable.

 Take responsibility from development to customer support.

 Research and implement things wherever needed, improve efficiency using

automation, and methods like test driven development.

 Setting up events for user, performance and error analytics.

 Participate in product and design ideation, collaborate with the team to

implement high-quality features.

Skills & Qualifications

 2 years of experience in software development preferably B2C experience.

 Experience in React native, Javascript.

 Experience with popular React workflows (such as Flux or Redux).

 Familiarity with newer specifications of ECMAScript (ES6 & ES5 ).

 Familiarity with RESTful APIs.

 Experience in working with the MERN stack or similar frameworks

• Structuring campaigns and ad groups, and determining the best settings
• Conducting social media audits to ensure best practices are being used
• Coordinating with the sales team to create marketing campaigns
• Monitoring key online marketing metrics to track the success
• Optimizing content for the website and social media platforms
• Analyzing campaign metrics/data and providing interpretation and suggestions for improving performance
• Ensuring that the brand message is consistent
• Executing new and creative collaborations among technologies and platforms
• Determining what content will reach customers

• Bachelor’s degree in any discipline is required
• Exceptional knowledge and experience in lead generation/performance marketing on Google and Facebook
• Analytical mindset with experience in Google Analytics and Google Tag Manager
• Minimum 1 year of proven work experience
• Ability to work independently and in a team environment
• SEO, SEM Knowledge
• Google AdWords and Facebook Ads
• Knowledge of PPC
• Campaign Delivery
• Managing Campaign Budgets
• Campaign optimization

Responsibilities

• Understand both functional and non-functional requirements and translate them into tasks that can be worked upon individually or in a team.
• Use your skills in programming and system design to develop robust and scalable software.
• Perform POCs and build solutions that require integration with other systems.
• Provide estimations for a Sprint or Tasks, and share inputs in design and architectural choices.
• Work in a fast-paced environment and contribute to all phases of SDLC.
• Maintain minimal yet essential engineering documentation to complement the product.
• Collaborate with engineers, product, and business teams as part of Agile delivery.
• Perform code reviews and provide guidance to the team in building software and following the defined process.
• Carry an ownership attitude when working on any solution.

Requirements

• Strong at problem-solving using Java 8 and above.
• Good understanding of SDLC using agile methodologies iterative development.
• Basic skills in HTML, CSS, and JavaScript are desired.
• Hands-on knowledge of using Spring Boot or Quarkus for building Microservices or API driven solutions.
• Good knowledge of SQL and experience in using any RDBMS like MySQL, PostgreSQL.
• Understanding or exposure to Cloud-Native development using AWS is an added advantage.
• Any experience in working on projects built using Microservice architecture, esp if using React and Java with Docker is an added advantage.

• Own Android SDKs, working hand-in-hand with the founding team
• Design and build delightful user interfaces for native apps on Android
• You will be (co-) responsible for our software development kit (SDK) for Android
• Building mobile apps in both Swift and Kotlin.
• You work independently on your own code, but you also spend time collaborating with others.
• You are involved in all stages of app development and contribute to the roadmap.
• You get the freedom to experiment with new Android technology.
• Ownership — advocate for projects and solutions that need to be launched ground up.

• Min 2 to 4 years in developing Android applications in Java / Kotlin / C++ /
• Gradle/Groovy.
• Worked on SDKs/Frameworks.
• Strong understanding of software design patterns as well as Android specifics.
• Experience with authenticated sessions using authentication tokens and have at-least
• fundamental knowledge of app security.
• Good to have:-
• Experience with Cross-platform frameworks is a plus (React Native, Flutter, Cordova,
• Xamarin).
• Have implemented security standards and guides.
• Experience building applications at scale.
• Experience with third-party libraries and APIs like Mobile Vision, MLKit and/or
• Camera API.
• Good understanding of garbage collection, design patterns and continuously
• discover, evaluate, and implement new technologies to maximise development
• efficiency.
• Unit-test code for robustness, including edge cases, usability, and general
• reliability