
Backend Engineer (MongoDB / API Integrations / AWS / Vectorization)
Position Summary
We are hiring a Backend Engineer with expertise in MongoDB, data vectorization, and advanced AI/LLM integrations. The ideal candidate will have hands-on experience developing backend systems that power intelligent data-driven applications, including robust API integrations with major social media platforms (Meta, Instagram, Facebook, with expansion to TikTok, Snapchat, etc.). In addition, this role requires deep AWS experience (Lambda, S3, EventBridge) to manage serverless workflows, automate cron jobs, and execute both scheduled and manual data pulls. You will collaborate closely with frontend developers and AI engineers to deliver scalable, resilient APIs that power our platform.
Key Responsibilities
- Design, implement, and maintain backend services with MongoDB and scalable data models.
- Build pipelines to vectorize data for retrieval-augmented generation (RAG) and other AI-driven features.
- Develop robust API integrations with major social platforms (Meta, Instagram Graph API, Facebook API; expand to TikTok, Snapchat, etc.).
- Implement and maintain AWS Lambda serverless functions for scalable backend processes.
- Use AWS EventBridge to schedule cron jobs and manage event-driven workflows.
- Leverage AWS S3 for structured and unstructured data storage, retrieval, and processing.
- Build workflows for manual and automated data pulls from external APIs.
- Optimize backend systems for performance, scalability, and reliability at high data volumes.
- Collaborate with frontend engineers to ensure smooth integration into Next.js applications.
- Ensure security, compliance, and best practices in API authentication (OAuth, tokens, etc.).
- Contribute to architecture planning, documentation, and system design reviews.
Required Skills/Qualifications
- Strong expertise with MongoDB (including Atlas) and schema design.
- Experience with data vectorization and embeddings (OpenAI, Pinecone, MongoDB Atlas Vector Search, etc.).
- Proven track record of social media API integrations (Meta, Instagram, Facebook; additional platforms a plus).
- Proficiency in Node.js, Python, or other backend languages for API development.
- Deep understanding of AWS services:
- Lambda for serverless functions.
- S3 for structured/unstructured data storage.
- EventBridge for cron jobs, scheduled tasks, and event-driven workflows.
- Strong understanding of REST and GraphQL API design.
- Experience with data optimization, caching, and large-scale API performance.
Preferred Skills/Experience
- Experience with real-time data pipelines (Kafka, Kinesis, or similar).
- Familiarity with CI/CD pipelines and automated deployments on AWS.
- Knowledge of serverless architecture best practices.
- Background in SaaS platform development or data analytics systems.

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- Python knowledge: object-oriented programming: inheritance, abstract classes, dataclass, dependency injection, design patterns: comand-query, repository, adapter, hexagonal architecture, swagger/Open API, flask, connexion
- Experience on AWS services: lambda, ecs, sqs, s3, dynamodb, auroradb
- Experience with following libraries boto3, behave, pytest, moto, localstack, docker
- Basic knowledge about terraform, gitlab ci
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Job Description:
Good knowledge of python & Java. The order of need should be
- Builds (TeamCity/Jenkins, Urban Code Deploy, ANT/Maven)
- Python scripting
- JAVA
- Linux/Unix
And candidate should possess knowledge on the below :
- JIRA or other
- Agile (Scrum/Kanban, etc.)
- Bit bucket/GIT/SVN/Artifactory
- Linux/Unix
- Jenkins/Team City – ANT/Maven
- Usage & setup of IDE’s
About the team
Vakilsearch is on a mission to make Legal Simple. We are the leaders in Indian Legal, Tax and Compliance. Our mission is simplifying businesses to be in compliance with Government through end to end process and workflow automation. This is the key initiative of Vakilsearch as we look to revolutionize legal space in India.
We are a technology-driven platform, offering services that cover the legal needs of start-ups and established businesses. Some of our services include incorporation, government registrations & filings, accounting, documentation and annual compliances. In addition, we offer a wide range of services to individuals, such as property agreements and tax filings. Our mission is to provide one-click access to individuals and businesses for all their legal and professional needs.
Key Skills
- Strong proficiency with JavaScript
- Strong knowledge in JavaScript Object Oriented Programming
- Strong Knowledge of Node.js and frameworks such as Express
- Good Understanding of the nature of asynchronous programming model
- Good Understanding of callbacks and event emitters
- Good Experience in Node.js Module/Library development
- Basic understanding of front-end technologies, such as HTML5, and CSS3
- Proficient understanding of code versioning tools, such as Git
- Working experience with MongoDB or equivalent nosql data store
- 3+ years of experience in Ruby / RoR
• Experience with data files processing (xls, csv, json, xls, text: 834, NACHA, segments)
• Experience working with relational databases (PostgreSQL)
• Experience with Git
• Good written and spoken English (Intermediate and higher)
• Experience deploying Rails applications
• RESTful API, JSON API
Will be a plus:
• Experience working with Unit and Integration Testing (Rspec, Capybara)
• Experience of integration with 3rd party systems and services and cloud technologies ( AWS stack: EC2, RDS, S3, etc.)
• Experience with RuboCop, JSHint/JSLint
• Experience with Microservice Architecture
• Knowledge of HTML5, CSS3
• Experience working with modern JavaScript frameworks — Ember.js, Vue.js
We're looking for exprienced Python developers with over 2+ years of production experience and strong expertise in building web applications and APIs using Python, Django and DRF. We are looking for cadidates who are go-getters and are leaning towards leadership positions. Candidates must have a proven history of building, scaling, optimising and securing Python based backends and APIs using a microservice architecture.
Bonus Skills : Experience with ReactJs, Node.js, FastAPI
We would prefer candidates who can join immediately or are currently serving their notice period. Jumpers please excuse, your application will be ignored
Key Skills Required
- Proficiency in Python 3.x based web and backend development
- Solid understanding of Python concepts
- Strong experience in building web applications using Django
- Experience building REST APIs using DRF or Flask
- Experience with some form of Machine Learning (ML)
- Experience in using libraries such as Numpy and Pandas
- Hands on experience with RDBMS such as Postgres or MySQL including querying
- Comfort with Git repositories, branching and deployment using Git
- Working experience with Docker
- Basic working knowledge of ReactJs
- Experience in deploying Django applications to AWS,Digital Ocean or Heroku
Responsibilities
- Understanding requirement and congributing to engineering solutions at a conceptual stage to provide the best possible solution to the task/challenge
- Building high quality code using coding standards based on the SRS/Documentation
- Building component based, maintainable, scalable and reusable backend libraries/modules.
- Building & documenting scalable APIs on the Open Spec standard
- Unit testing development modules and APIs
- Conducting code reviews to ensure that the highest quality standard are maintained
- Securing backend applications and APIs using industry best practices
- Troubleshooting issues and fixing bugs raised by the QA team efficiently.
- Optimizing code
- Building and deploying the applications
-
Full-time
Employment type
- Bachelor’s Degree in Computer Science or equivalent
- 8-12 years’ of industry experience in programming web applications, mobile and/or large scale enterprise products
- Deep knowledge of C#, ASP, .NET, MVC, .Net core
- Deep knowledge and extensive experience working on Ruby or React and JavaScript, as required
- Experience with XML, ADO/ADO.NET, LINQ, AJAX, IIS
- Extended experience with SQL, relational and non-relational databases
- Experience in TFS and Visual Studio
- Hands on experience with SDLC and programming design patterns
- Experience with Agile methodology
- Skillful at reviewing new feature impact on an application and recognizing potential risks
- Uses time effectively and efficiently
- Quickly learns new technologies
- Detailed oriented, professional and possesses a positive work attitude
- Communicate professionally both verbally and in writing
- Effective time management skills
- Knowledge on UI technologies will be plus
PRINCIPAL DUTIES AND RESPONSIBILITIES:
- Develops software solutions by studying information needs, conferring with users, studying systems flow, data usage, and work processes, investigating problem areas, following the software development lifecycle.
- Conducts systems analysis and makes recommendations to improve the system to achieve an outcome.
- Promotes internal best practices and coding conventions to write and execute tests for your own code, including creating comprehensive unit tests.
- Contributes to Technical Requirements Documents.
- Requests constructive feedback for designs early in the process.
- Communicates successfully with large teams and many stakeholders.
- Provides mentorship for Software Engineers and participates in interview panels to hire new Software Engineers.
- Assists in removing obstacles for the team to yield successful sprints.
- Performs peer code reviews to ensure quality of the codebase.
- Ability to decompose and delegate work to junior engineers.
- Updates job knowledge by studying state-of-the-art development tools, programming techniques and computing equipment; participating in educational opportunities, reading professional publications, maintaining personal networks, participating in professional organizations.
- Works effectively with multiple projects and features.
- All other duties as assigned.









