NodeJS Developer

Job Title: Lead Backend Engineer

Company: DoubleTick.io (Conversational CRM powered by Meta WhatsApp's API)

Location: Mumbai (on-site)

About the Role

We're looking for a hands-on QA leader to own quality across our products. You'll set the QA strategy, build and scale our automation and testing infrastructure, and lead a growing team — while staying close enough to the work to dig into a tricky bug yourself. This is a high-ownership role for someone who wants to define how quality is done, not just execute test cases.

Key Responsibilities

• Lead and mentor a team of 5-6 backend engineers, ensuring high-quality code delivery, adherence to best practices, and timely project completion.
• Hands-on development using TypeScript, Node.Js, and NestJs to build robust and scalable backend systems.
• Proficient in managing databases PostgreSQL and MongoDB. Implement efficient data storage and retrieval strategies.
• Expertise in Elasticsearch
• Work with Neptune and Gremlin to handle complex data structures and relationships.
• Conduct code reviews, enforce coding standards, and maintain high-quality software.
• Work closely with frontend teams, designers, and product managers to ensure seamless integration and alignment with business goals.
• Plan, track, and report on project progress. Manage resources effectively to meet deadlines.

Required Skills and Qualifications

• Bachelor’s degree in Computer Science or related field.
• Minimum 5 years of experience in backend development.
• Strong proficiency in Node.Js, PostgreSQL and JavaScript
• Strong experience in architecture and database design.
• Proven experience leading a team of engineers.
• Excellent problem-solving skills and attention to detail.
• Proven experience in scaling backend.
• Strong communication and collaboration skills.
• Experience in a fast-paced, agile environment.
• Prior experience in a similar lead role.

Good to have

• Experience with Gremlin, Neptune, MongoDB, Elasticsearch, TypeScript, and BigQuery
• Familiarity with AWS and its cloud-based services

What We Offer

• Competitive salary and benefits package.
• A dynamic and inclusive work environment.
• Opportunities for professional growth and development.
• A chance to work on cutting-edge technologies.

About Us:

DoubleTick is a mobile-first conversational CRM built on the official WhatsApp Business API, designed to unlock WhatsApp-led sales, marketing, and customer engagement at scale.It enables businesses to manage conversations through a centralized team inbox, automate workflows with chatbots and bot studio, and drive growth via bulk broadcasting and analytics. With features like WhatsApp Calling, commerce & cataloging, and role-based access, DoubleTick helps teams streamline operations and improve conversion efficiency.

Backed by Info Edge Ventures and BeeNext, the platform serves 10,000+ businesses across India and UAE in 100+ industries. Leading brands such as MakeMyTrip, Royal Enfield, CoinDCX, Tarun Tahiliani, Times Media, GRT Jewellers, Malabar Gold and Diamonds, Jaro Education, Sabyasachi, and DarGlobal trust DoubleTick to power their customer conversations. 

About the Role:

We are seeking a highly skilled and motivated individual to join our development team. The ideal candidate will have extensive experience with Node.js, AWS, and MongoDB, and a strong pro-activeness and ownership mindset.

Technical Expertise:

• Architect, design, and develop scalable and efficient backend services using Node.js (Nest.js).
• Design and manage cloud-based infrastructure on AWS, including EC2, ECS, RDS, Lambda, and other services.
• Work with MongoDB to design, implement, and maintain high-performance database solutions.
• Leverage Kafka, Docker and serverless technologies like SST to streamline deployments and infrastructure management.
• Optimize application performance and scalability across the stack.
• Ensure security and compliance standards are met across all development and deployment processes.

Bonus Points:

• Experience with other backend languages like Python and worked on Agentic AI
• Security knowledge and best practices.

• Must have hands-on experience in web applications development, and open-source technologies stack (Node.JS, React JS, Gatsby, PHP, etc.).
• Resolution conflicts and understands the logical implementation to find optimal solutions.
• Experience in developing end-to-end solutions and backend architecture.
• Ability to apply advanced concepts, and contribute to the development of innovative principles and ideas.
• Advanced knowledge of back-end configuration and deployments.
• Advanced understanding of RDBMS and NoSQL databases.
• Advanced knowledge Git source code management.
• Minimum 8 years of experience required.

Job description for Backend Developer:

Responsibilities
• Hands-on experience in Springboot and good knowledge of MySQL, MongoDB
• Hands-on experience in building RESTful based APIs
• Develop and manage well-functioning databases and applications
• Write effective APIs
• Integration of user-facing elements developed by front-end developers with server-side logic
• Building reusable code and libraries for future use
• Optimization of the application for maximum speed and scalability•
• Implementation of security and data protection

Skills And Qualifications
• Basic understanding of front-end technologies and platforms, such as JavaScript, HTML5, and CSS3
• Understanding accessibility and security compliance (Depending on a specific project)
• User authentication and authorization between multiple systems, servers, and environments
• Integration of multiple data sources and databases into one system
• Management of hosting environment, including database administration and scaling an application to support load changes
• Data migration, transformation, and scripting
• Outputting data in different formats
• 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 knowledge of a back-end programming language (Java 8 and above and Spring Boot)
• Proficient understanding of code versioning tools, such as Git
• Proficient understanding of OWASP security principles
• Understanding of “session management” in a distributed server environment

Required qualification:

*)  Any degree from a reputed university

*) Proven software development experience and Java/J2EE skills development. 

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

Purpose

We are looking for Sr. Laravel Developer. The candidate must have Good level of proficiency in PHP, MySQL, object-oriented JavaScript, HTML5, CSS3, AJAX, XML, JSON required and Write clean PHP code in a timely and scalable way.

Key Responsibilities

• Responsible to Code, Test, Deploy and Scale SaaS-based Products using PHP, MySQL, with Laravel and Lumen MVC framework.
• Can write functional requirement documents and guides others within the project / team.
• Develop, write and implement software programming applications following established architecture standards as well as software development and project management methodologies.
• Integrate / Develop to third-party APIs.
• Write high quality code using the guidelines and effectively debug the code; perform code review of junior members.
• Azure or Aws cloud knowledge is good to have.
• Proficient understanding of code versioning tools, such as SVN, GIT.
• Build and implement web applications and back-end services that integrate with mobile applications.
• Build reusable code and libraries for future use & Optimize application for maximum speed and scalability.
  
  

Skills

• Strong coding experience with Laravel (5.5 and above) and Lumen
• Knowledge of PHP frameworks like CodeIgniter / YII / Zend / Joomla / Drupal etc will be a plus point.
• Strong skills in OOPs PHP, MySQL, CSS, HTML5, jQuery, JavaScript, AJAX, Web Services, JSON.
• Must have used frameworks such as JQuery /Angular/ React JS/Backbone.
• Strong knowledge of design patterns and OOPs concepts.
• Experience with databases like MySQL / MariaDB / Postgres.
• Experience in Source Code Versioning GitHub / GitLab / BitBucket and continuous integration tools like Jenkins.
• Working knowledge of XML / JSON and third-party APIs.
• Good to have skills: knowledge of non-relational databases like MongoDB; Exposure to Varnish, Redis, Elastic Search, Apache Solr.
• Payment processing integration experience in a PCI compliant environment is a plus
  Understanding of web and application security (OWASP)
• Experience in common third-party APIs (Google, Facebook, Twitter, Instagram, etc.)
• Good written and verbal communication with good analytical and multitasking skills
  
  

•  5-10 years of experience in building API services using NodeJS Express and related frameworks
• Expert level understanding of NodeJS asynchronous runtime
• Expert level understanding of Javascript concepts on callbacks and closures
• Experience with Postgres, NoSQL, Redis, and Firebase real-time database
• Experience with AWS services like Elastic Beanstalk, Cloudfront, S3, EC2, Lambda, API Gateway, SQS, etc
• Understanding of patterns and techniques for building scalable back-end infrastructure including caching, rate limiting, authentication, and authorization schemes.
• Experience in building highly scalable and high throughput services with millisecond response times
• Experience working in a collaborative team environment
• Excellent communication & interpersonal skills
• Willingness to learn and pick up new technology along with patience to mentor

Bonus skills – 

• Experience with Elastic Search, Puppeteer
• Experience writing unit test