SDE 1/2/3 - Backend (NodeJS/Scala)

AI Engineer — Vertexcover Labs

Who We Are

Vertexcover Labs is an employee-focused, engineer-run software studio. We partner with fast-growing, funded startups around the world—Rephrase.ai, Dhiwise, Dunzo, Dubdub, Xapo, Arintra etc.—to crack their toughest engineering problems. Everyone is an individual contributor; no management layers. Engineers choose the projects they work on, see each project's P&L, and share directly in the profits.

Whether it's building multi-agent systems for production, scaling ML pipelines across GPU clusters, or shipping RAG-powered products that end-users rely on—we solve hard AI problems for real companies.

A Few Problems We Are Currently Working On

• AI Agents Test-authoring agents that convert natural language into e2e tests.
• Ad-performance agents that learn what works for your brand and generate winning creatives automatically.
• Scale + MLOps Optimise ML pipelines and fix autoscaling by applying queuing theory while juggling CPU / GPU memory contention.
• RAG & Knowledge Systems Design and deploy retrieval-augmented generation pipelines—chunking strategies, embedding models, reranking, and evaluation loops.
• AI Video & Image Processing Build rendering pipelines, diffusion-model integrations, and real-time video processing at scale. You'll own at least one project like these—design, build, iterate.

Signals You're Probably the Right Fit

• Strong in at least one other language (Python, Go, Rust, TypeScript, Java …); happy to learn more.
• First principle understanding of how LLMs, embeddings, vector databases and AI Agents work
• Evidence of shipping real AI-powered software—OSS, side projects, or production features.
• Comfortable navigating the fast-moving AI landscape—papers, new model releases, evolving APIs.
• Clear written & spoken communication; async collaboration is our default.
• Self-directed—you ask for context, not permission.

How We Operate

• Project choice. Engineers vote on which engagements we take.
• Stack agnostic. We pick tools that fit the job, not the résumé.
• Pragmatic craftsmanship. Durable design, no gold-plating.
• Transparent economics. Know what your work is worth, share in the profits.
• Remote-native. Async by default; sync when it helps.

Hiring Process (Lean & Human)

1. 2–3 technical deep-dives with future teammates.
2. 30-minute culture chat.
3. Offer. No LeetCode marathons, no trick puzzles.

We read every application and reply to all candidates.

Job description :

Back-End Developer (B2B SaaS)

Location : Kashmere Gate, Delhi (Hybrid)

NP : Immediate Joiner

Experience : 2.5years to 4years

About Us :

Eazybe is transforming workplace communication by creating innovative tools on top of popular messaging platforms like WhatsApp, phone calls, and more. As we expand our reach into international markets, we're looking for dynamic sales professionals to join our team!

Key Responsibilities :

Backend Development: Write clean, maintainable, and efficient code for server-side applications.

API Design & Integration: Build and maintain RESTful or GraphQL APIs to support various front-end and mobile applications.

Database Management: Design, implement, and maintain robust databases, ensuring data integrity and security.

Performance Optimization: Optimize applications for maximum speed and scalability.

Collaboration: Work closely with front-end developers, product managers, and other team members to ensure seamless integration of functionalities.

Debugging & Troubleshooting: Identify and fix bugs, bottlenecks, and system issues.

Security: Implement best practices for securing backend systems and data.

Documentation: Prepare technical documentation and reports for system and code processes.

Qualifications :

- Proficient in solving Data Structures and Algorithms (DSA) problems.

- Demonstrated experience with platforms like LeetCode or similar competitive programming environments.

- Strong aptitude and problem-solving skills, with the ability to think critically and approach challenges creatively.

- A sharp analytical mindset with a proven ability to learn and adapt quickly.

- Proficiency in server-side programming languages such as Python, Node.js, Ruby, Java, PHP, or others.

- Experience with frameworks like Django, Express, Flask, Spring Boot, etc.

- Strong understanding of databases (SQL and NoSQL), such as MySQL, PostgreSQL, MongoDB, Redis, etc.

- Familiarity with API standards and development (REST, GraphQL).

- Knowledge of cloud platforms like AWS, Azure, Google Cloud, or others.

- Experience with version control tools like Git.

What We Offer :

- 12 days of Paid Time Off (PTO) annually

- 10 days of Working From Anywhere (WFA) annually

- Hybrid Work Model: 4 days in-office and 2 days from home

Convenient Office Location : Just a 7-minute walk from Kashmiri Gate Metro

- Candidates who meet the criteria will undergo 2 to 3 interviews and a possible paid work trial focusing on analytical and technical skills.

- If you're passionate about backend development and eager to work in a fast-paced, innovative environment, we want to hear from you.

• 6+ years of experience in building web applications using ASP.net, web API, SQL Server, and Testable code.
• C# with Strong in OOPS,
• Hands on experience in React JS or Node JS,
•Experience of architecting and designing web applications and services
• Must have at least 1+ year experience using React or Node JS.
• Passion for building and delivering great software with a strong sense of ownership, while working closely with junior team members.
• Conceptual knowledge of middleware architecture.
• Strong experience with Agile processes.
• Exposure to tools to optimize web application performance-MH
• Understanding and experience of working with Product Management, Design and DevOps teams

• Experience in building applications on .NET Core, is a great plus
• Experience working with CRM Products 

• Strong proficiency with JavaScript and TypeScript
• Knowledge of Node.js and loopback 4 frameworks
• Understanding the nature of asynchronous programming and its quirks and workarounds
• Basic understanding of front-end technologies, such as React
• 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

Required Candidate profile

Perks and Benefits 

We’re seeking an expert Full-Stack developer ( Expert in  HTML 5, PHP, Canvas & JQuery) to help us update our back-end admin. You will work from layouts in Adobe XD and Anima and work side by side with our development team in Manila and coordinate tasks and timelines to complete our  project.  Estimate full-time 3 month timeline- possibility may need you for ongoing freelance work after project completion.

We are looking to hire a temporary, freelance position for now. 


REQUIREMENTS

• At least 3 year(s) of working experience in eCommerce web development  is  required for this position

• Strong knowledge of current architectural approaches to web-based applications development

• Experience with Agile development projects

• Ability to effectively manage changing and multiple priorities

• Experience with PHP, CSS, HTML / HTML 5, Javascript coding

• MVC based PHP framework (Laravel)

• jQuery/AJAX/JSON or other Javascript frameworks (AngularJS, React Backbone, etc)

• HTML5 Responsive framework (Bootstrap, foundation, skeleton, etc)

Knowledge of Linux command-line

• Experience of using version control (Github, Subversion, BitBucket, Adobe Photoshop, Adobe XD, Anima)

• Knowledge and understanding of how to update modules using Angular or React 

• Knowledge and understanding of Databases (MySql/MSSQL)

• Knowledge and understanding of SEO tools application

• Experience with open-source software

• Enjoy mentoring team members; helping them to advance their technical skills

• Must be able to stay on top of advancing internet and computer technology and its effects to the business environment

• Be willing to work in a research capacity ñto find, test, and critically review open-source frameworks and technologies.

HOW TO APPLY

Make an intro answering the following questions:

1) Provide an example of a web application that you've built that uses HTML 5, Canvas or where multiple files can be uploaded simultaneously 

We are looking for 2+ Year experienced Back-end developer to join our Team.
You will be responsible for the development and management of server side of our web applications in terms of quality and scalability. 

You should be passionate about writing optimised codes, and solving problems in real time, Data Structure and Algorithm. 

Responsibilities : 

- Write clean code to develop functional web applications 

- Should be adaptable to good practices and standards 

- Capable to write scalable codes. 

- Gather and address technical and design requirements 

- Build reusable code and libraries for future use 

- Follow emerging technologies 

Required Candidate profile

Requirements : 

- Hands on experience on Node Js, Typescript, Mongodb, Elastic Search, Kafka, RESTfull Apis, Python(Django),  Angular, Flutter / Dart

- Excellent analytical and time management skills 

- Teamwork skills with a problem-solving attitude 

- Understanding of deployment process with AWS/Digital Ocean/Microsoft Azure 

- Good Understanding of System Design. 

- Should be aware of design patterns 

- Understanding of TDD 

- Unit Test Frameworks - Chai, Mocha, Sinon, Supertest, Knock 

What we are looking for

- We are looking for a candidate with around 2 years of experience in Backend Development. We are looking for a team player with a very good attitude.