
We are seeking a highly skilled Team Lead – MERN Stack Developer to lead the development and delivery of scalable, maintainable, and high-performance applications using MongoDB, Express.js, React.js, and Node.js. The ideal candidate will have strong technical expertise, leadership skills, and a passion for building innovative solutions. If you have experience in microservices, micro-frontends, message queues, Redis, CI/CD, and best practices for large-scale applications, we’d love to have you on our team.
Key Responsibilities
Technical Leadership & Team Management
- Lead and mentor a team of developers, ensuring smooth collaboration, technical growth, and high-quality deliverables.
- Assign tasks, set priorities, track progress, and ensure project deadlines are met.
- Conduct code reviews to maintain coding standards, ensure maintainability, and improve code quality.
- Promote a culture of innovation, continuous learning, and problem-solving.
- Architect and implement microservices, micro-frontends, and modular micro-apps for scalable and maintainable solutions.
- Collaborate with stakeholders to translate business requirements into technical designs and implementation plans.
- Optimize performance and scalability for large-scale applications with dynamic data flows.
Backend Development (Node.js & Express.js)
- Design and implement secure, scalable backend structures and APIs.
- Develop reusable tools and libraries to support a microservices architecture.
- Handle error management and debugging for seamless application functionality.
- Work with message queues like RabbitMQ, Kafka, or Redis for event-driven communication.
- Use tools like New Relic or Prometheus to monitor and debug production systems.
- Solve challenging technical problems with smart, scalable solutions.
Database Management (MongoDB)
- Design efficient and scalable database schemas for large-scale projects.
- Optimize database performance using indexing, aggregation, and advanced querying techniques.
- Leverage MongoDB features like sharding and replication to handle large datasets efficiently.
Frontend Development (React.js & JavaScript)
- Build and optimize reusable, high-performance React.js components and dynamic user interfaces.
- Develop robust solutions for complex UI interactions, including drag-and-drop functionality.
- Implement efficient state management using Redux, Context API, or React Query.
- Optimize web performance, including DOM manipulation, memory management, and responsiveness.
- Ensure applications adhere to WCAG accessibility standards and provide excellent user experiences.
Best Practices & Continuous Improvement
- Define and enforce coding standards, workflows, and best practices for high-quality development.
- Develop and maintain CI/CD pipelines for automated testing and deployment.
- Write secure and robust code to protect against vulnerabilities like XSS and CSRF.
- Regularly monitor and optimize application performance, security, and scalability.
- Stay updated on the latest trends in MERN stack technologies and software development practices.
- Collaborate with DevOps teams for containerized deployments using Docker and Kubernetes.

About Saeculum Solutions Pvt Ltd
About
Saeculum Solutions Pvt Ltd is an emerging company and is always looking to hire fresh enthusiastic talents to join our growing team. We believe in delivering the best services to our clients and therefore we only hire talents who are all-rounders and who say “All-is-Well” to all projects. So, if you share the same passion and vision, join our team today..!
Tech stack
Candid answers by the company
- Web Application Development
- Mobile Application Development
- Hire Dedicated Developers
- Front-end Development
- SaaS Product Development
- UI / UX Design
- CMS Development
- QA & Software Testing
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We are seeking a highly skilled and experienced MERN (MongoDB, Express.js, React, Node.js) Stack Developer to join our dynamic development team. As a MERN Stack Developer, you will be responsible for designing, developing, and maintaining scalable web applications using the MERN stack framework.
- Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model.
- Expertise in backend programming with Node.js and MongoDB.
- Experience with React.js and redux.
- Material UI and 3rd party libraries.
- Experience with clean code writing practices like avoiding callback hell like promises, async.
- Thorough understanding of Node.js and its core principles.
- Experience with popular React.js workflows (such as Flux or Redux).
- Familiarity with newer specifications of ECMAScript.
- Experience with data structure libraries (e.g., Immutable.js).
- Familiarity with RESTful APIs.
- Knowledge of modern authorization mechanisms, such as JSON Web Token.
- Familiarity with modern front-end builds pipelines and tools.
- A knack for benchmarking and optimization.
- Familiarity with code versioning tools (such as Git, SVN, and Mercurial).
Responsibilities:
- Build Node.js APIs using microservices.
- Rewriting backend code with microservices architecture & Unit tests.
- Developing new user-facing features using React.js.
- Building reusable components and front-end libraries for future use.
- Translating designs and wireframes into high-quality code.
- Optimizing components for maximum performance across a vast array of web-capable devices and browsers.
If you are a passionate MERN Stack Developer looking for an exciting opportunity to work on challenging projects and be part of a talented team, we would love to hear from you. Please submit your application, including your resume and portfolio, highlighting your relevant experience and projects.

Role: Sr Full Stack SW Developer
Location: Okhla, New Delhi
Experience: Minimum: 7 Years
In this role, the person will be responsible for developing and implementing solutions using React.js, Node Js, JSX, Expressand MySQL concepts, and workflows such as Redux, Flux, and Webpack. The candidate will also be responsible for profiling and improving front-end & back-end performance and documenting our codebase. A top-class React.js Developer should be able to design and build modern user interface components to enhance application performance.
Responsibilities
- Ability to translate Wireframes and PSD Designs into functional web apps using HTML5, React, Redux, JavaScript, TypeScript, Node.js, Express, JSX, and MySQL.
- Creating RESTful services with Node.js & MySQL.
- AWS (Amazon Web Services) development & services like EC2, CloudFront, S3, load balancer, etc.
- Architect scalable web architectures.
- Work in a cross-functional team to deliver a complete user experience.
- Create Unit and Integration tests to ensure the quality of code.
- Be responsive to change requests and feature requests.
- Mentor junior members of the team*
- Managing & Integrating Amazon Web Services*
- Managing 3rd party software tools & subscriptions*
Requirements
- Detail-oriented experience as a Full Stack Developer/Lead creating React, Redux, Node js and (RDBMS) MySQL-based solutions.
- Ability to work both independently and in collaborative teams to communicate design and build ideas effectively.
- Fluent knowledge of the latest HTML/CSS, JavaScript & Typescript standards, and best practices.
- Strong hands-on of Node.js, Express server, and RESTful web APIs.
- Strong Hadson of MySQL or any other SQL-based RDBMS.
- Strong Hands-on in integrating AWS services into the application. AWS developer certificate will be a plus but not mandatory.
- Solid understanding of HTTP protocol and how server-side code is processed on the client.
- Working knowledge of front-end optimization and performance techniques.
- Obsession with lean, clean, and organized front-end code.
- Cross-browser development and troubleshooting.
- Experience building Responsive websites for web, tablet, and mobile devices.
- Good understanding of overall web design including basic usability, accessibility, industry standards, architecture, and navigation.
Responsibilities
Design, implementation and delivery of solutions.
Solving new problems and address any issues regarding the architecture and performance.
Focused on understanding customer needs and anticipate the changing business and technology landscape.
Collaborate with teams from various verticals within and outside the company.
Qualifications
2-5 years of Software Engineering experience in Node.js and React.
Proven experience in architecting performant, complex application on web or mobile applications.
Knowledge of end to end Software development life cycle.
Ability to work individually or in teams and mentor new developers to the team.
Strong knowledge of computer science, algorithms and design patterns.
A degree in Computer Science or related field, or equivalent industry experience.
We are looking for Full Stack Developer.
Experience - 2 to 5 years
Location - Ahmedabad
5 Days working
Required Skills:
- Should have strong hands on experience in Node.js, React.js & Angular.js.
- Deep understanding of object - oriented JavaScript and design principles and standards, and has a solid programming background
- Experience handling different browser capabilities
- Hands - on experience in UI optimization best practice implementations
- Demonstrated ability to accurately estimate and scope development work
- Good analytical and problem - solving skills
- Communication skills are imperative both in written and in verbal form
- Excellent organizational and coordination skills
About the company:
CogniTensor is an analytical software company that brings data to the heart of decision-making. CogniTensor leverages its product, DeepOptics - an integrated platform to implement 3A (Automation, Analytics and AI) at scale.
Cognitensor has customers ranging in Finance, Energy, Commodity, Retail & Manufacturing. More details can be found on our website: https://www.cognitensor.com/">https://www.cognitensor.com/
Our strategic investors include Shell and CIIE.CO (IIM-A/Accenture).
Qualification & Experience:
- BE/B.Tech Degree in Computer Programming, Computer Science, or a related field.
- +2 years experience as a Software Developer.
- Hands on experience in developing finance applications is must
Roles & Responsibilities:
We are looking for a Full Stack Developer to produce scalable software solutions. You’ll be part of a cross-functional team that’s responsible for the full software development life cycle, from conception to deployment.
As a Full Stack Developer, you should be comfortable around both front-end and back-end coding languages, development frameworks and third-party libraries. You should also be a team player with a knack for visual design and utility. Along with familiar with Agile methodologies and testing skills
- Work with development teams and product managers to ideate software solutions
- Design client-side and server-side architecture
- Develop and manage well-functioning databases and applications
- Write effective APIs
- Write technical documentation
- Excellent communication and teamwork skills
Technical Skills:
Must Have
- React JS
- Git / Bitbucket,
- Express JS, Python, HTML, CSS, Node JS
- CI/CD like CircleCI
- Postgres or any DB knowledge
- Familiarity with AWS or Azure or both
Good to Have
- Docker
- Redux
- Android development
- React Native
- Electron
- GraphQL
- Jira
What’s in for you:
- An opportunity to lead a business segment
- Extensive liaising with customers and partners
- A rewarding career progression
Preferred Location:
Delhi NCR
* Explore
As an engineer, you will have multiple ways, tools & technologies to solve a particular problem. We want you to take things in your own hands and figure out the best way to solve it.
* PDCT
Plan, design, code & write test cases for problems you are solving
* Tuning
Help to tune performance, including reviewing system and application logs
* Security
Work on code-level application security
Technologies :
* React
* Python (Some knowledge or past work-ex)
* Typescript (Optional)
The challenges are great (as are the rewards). If you are looking to take these backend challenges head on & wish to learn a great deal out of it and contribute to the company along the way, this is the role for you.
Company & team :
Until now companies across the world, manage their analytical workflow through a number of data tools, for each use case adding one more tool to the stack leading to high maintenance cost and difficulties with respect to scaling. Research shows, companies only spend about 11% of time on extracting value out of their data and the other 89% of their time goes on just maintaining the “Frankenstein” data infrastructure.
Here enters Datazip Software-as-a-service, which is a no-code, scalable, all-in-one, data stack (Data Ops) for organisations to ingest, store, transform and visualise data, resulting in fast data-driven decision making, all without the need for expensive data teams. We are providing Ingestion with 150+ sources, Data Warehousing, Data analytics (BI tool), Data transformation solutions as a whole managed stack.
Companies have more data than ever to activate and extract value. But they’re also approached by a plethora of data tools and service providers for different steps in the process.
Our mission is to provide the quickest, trustworthy and most reliable end-to-end way for a company to extract the value of their data covering all steps.
What sets us apart : Product and our character
* We have accepted the challenge of solving the problem of data infrastructure end-to-end, not just the part of it and you will not find us resting till we solve this. ( yeah, we are Tireless! )
* An incredibly consistent culture based on 5 distinguishing characteristics: Persistence, Impact, Passion, Integrity & Fun (of course !!)
And it’s working! Within 3 months of incorporation Datazip shipped out its V0, secured funding and was also entrusted by multiple startups for their data infrastructure needs.
Given the Core deep tech nature of our product, we are on the lookout of Rockstar Founding Team engineers. Your main job will be to get already present best in class open source tools, and modify them to fit the use cases in scalable, secure & observable manner. These tools should work well together as well.
Founding team
Shubham Baldava
Shubham CTO, 7 years industry experience with 3 unicorns, solving data. NIT Jamshedpur alumn
Rohan Khameshra
Rohan was a data scientist at Khatabook. He loves data and is helping with product and sales at Datazip. IIT Kharagpur alumn
Sandeep Devarapalli
Sandeep was a space scientist at ISRO, loves to build Tech products and he is currently contributing to Datazip to help anyone work with data at scale, mainly handling growth and marketing. IIM Calcutta alumn
We are looking for a Full Stack Developer with 4+ years of experience, to produce scalable
software solutions. As a Full Stack Developer, you should be comfortable around both front-
end and back-end coding, building web environments on AWS
Responsibilities
Strong understanding of algorithms, data structures, and system design
Develop client side and server-side architecture.
Develop and manage well-functioning databases and applications
Be responsible for the planning, implementation, and growth of the AWS cloud
infrastructure
Manage a continuous integration and deployment methodology for server-based
technologies
Ensuring cross-platform optimization.
Designing user interactions on web pages.
Test software to ensure responsiveness and efficiency Troubleshoot, debug and
upgrade software
Meeting both technical and consumer needs.
Staying abreast of developments in web applications and programming languages.
Requirements ·
1+ years in Front-end and 3+ years in Back-end development.
Knowledge of front-end technologies and its libraries: React JS, Angular
Knowledge of back-end technologies and its libraries: Express.js, Node.js
Familiarity with databases: MongoDB
Familiarity with continuous integration/continuous delivery (CI/CD) pipelines
Experience designing and building web environments on AWS, which includes
working with services like EC2, ELB, RDS, and S3
Familiarity with tools like AWS CodeBuild, AWS CodeDeploy, and AWS
CodePipeline
Proven experience as a Full Stack Developer or similar role
Experience developing SAAS Products.
Good problem-solving skills and attention to detailing.
Job Description
1. JavaScript, ReactJs, Node.js, Express.js, MongoDB, Web-Services
2. Working Experience of Ajax,Json
3. Rest/ SOAP API Integration
4. Good Logical and Analytical and communication Skills
5. Should have knowledge of CI/CD.
6. Must have experience in writing unit test cases and good in TDD approach.
7. Should have basic knowledge of HTML5 and CSS.
8. Ensuring high performance of applications on mobile/desktop
9. Knowledge of Jenkins, GIT, Docker, Linux (Basic)
10. Writing tested, idiomatic, and documented JavaScript, HTML and CSS
11. Coordinating the workflow between the design team, the HTML coder, and yourself
12. Communicating with internal/external web services.
GOOD TO HAVE
1. Experience with Amazon web services, DocumentDB, etc.
2. Understanding of Ecommerce applications.
3. Understanding of fundamental design principles behind a scalable application.
4. Creating database schemas that represent and support business processes Implementing automated testing platforms and unit tests Proficient understanding Roles and Responsibilities
5. Design client-side & server-side architecture
6. Build the front-end of application through appealing visual design
7. Test software to ensure responsiveness and efficiency
8. Troubleshoot, debug and upgrade software
9. Build features and applications with a mobile responsive design
10. Ability to work effectively under very tight deadline pressure.
11. Analyze issues, recommend alternatives, and implement the best recommendation
12. Prioritize tasks and responsibilities while managing multiple, competing priorities
Our ideal candidate is comfortable collaborating with Product Owners, UX and UI Designers, Data Scientists and senior technical team members to build sound solutions to complex business challenges. A Self-starter and problem-solver will thrive in this position.
You should be strong JavaScript developer comfortable in all areas of the software development lifecycle and have experience with React, Node, Mongo, MySQL and Express in a scalable production environment. Some Python and familiarity with AWS would be welcomed.
Focus Areas and Core Responsibilities
Accountable for day-to-day implementation and launch of product roadmap features and updates.
Collaborate with Data Science, Tech and UX teams to create systems design and information architecture based off of user stories and requirements. Ensure test cases are properly written.
Maintain and work on the continuous improvement and development of company tools.
Coordinate with dev ops and QA to ensure continuous integration and deployment of production ready code.
Skillset, Qualifications, and Experience
- 5+ years of web application development experience including strong working knowledge of JavaScript, ReactJS, NodeJS, Mongo and Express.
- Familiar with asynchronous programming and object-oriented programming best practices. Must have prior experience with MVC design pattern
- Experience with node and linux commands necessary for debugging installations and deployment locally and on cloud services such as AWS
- Strong familiarity with a variety of APIs and RESTful interfaces
- Familiar with various methods for performance optimization
- Ability to work with UX/UI team to create a frictionless user experience and pixel perfect web components and data visualizations
- Experience integrating security best practices into the SDLC
- Expert level Git, including branching and best practices to resolve merge conflicts
- 1+ years of Agile development experience
- Experience manipulating and working with data in a variety of forms: csv, xml, json, structured and unstructured
- Excellent communicator who can work independently and be a team player
- Passion for Technology: excitement for new technology, bleeding edge applications, and a positive attitude towards solving real world challenges
We are proud to be an Equal Opportunity/Affirmative Action Employer and committed to leveraging the diverse backgrounds, perspectives and experience of our workforce to create opportunities for our colleagues and our business. We do not discriminate in employment decisions based on any protected category.

● Design and develop software to support business practice management of current products based on the Java/Python/PHP/Node JS platforms
● Ensure design meets product requirements and structured to scale with business growth
● Ensure design comply to industry standards and interoperates with 3rd party software
● Conduct thorough design unit and integration testing with other software components
● Adhere to proper software design principles and processes with design documentations, reviews, test plans and release notes.
● Mentor/coach and guide other team members to achieve project deliverables
Skills & Competencies:
● Significant and demonstrable Java/Python/PHP/NodeJS development experience (server side).
● Significant and demonstrable experience of using Unix / Linux based Operating Systems including performing basic administrative tasks.
● Desirable experience of scripting languages e.g Ruby or Perl
● Significant and demonstrable experience of responsive websites
● Significant and demonstrable experience of integrating payment systems to websites
● Significant and demonstrable experience in any database system
● Sound problem solving skills and aptitude
● Sound communication skills and team working
● Experience of the following is highly desirable: memcache, Apache HTTPd server, Tomcat, Linux, HTTP, MySQL, PostgreSQL
● Experience in creating cloud based solutions (AWS, …)
● Experience in working with highly scalable solutions (load balancing, sharding, clustering)
● Good problem-solving skills
● Team player ● Good time-management skills
● Great interpersonal and communication skills
● Excellent documentation skills
● Proven ability to mentor, coach and guide team members.
● Proactive and take ownership of delivering best-in-class solutions that serve business outcomes.
Qualifications ● B.E/BS/Masters degree in Computer Science










