
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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Job Description:
We are seeking a skilled .NET Developer with hands-on experience in MongoDB to design, develop, and maintain high-performance applications. The ideal candidate will have strong expertise in .NET Core/.NET 6+, C#, and NoSQL databases (MongoDB), along with a solid understanding of microservices architecture and cloud platforms.
Key Responsibilities:
- Design, develop, and maintain scalable, .NET applications using C# and .NET Core/.NET 6+.
- Work with MongoDB to design efficient data models and optimize queries.
- Develop and integrate RESTful APIs and microservices.
- Implement best practices for performance tuning, security, and scalability.
- Collaborate with frontend developers (React) to ensure seamless integration.
- Write clean, maintainable, and testable code.
- Troubleshoot and debug applications to resolve issues.
- Work in an Agile/Scrum environment, participating in sprint planning and code reviews.
- Deploy applications on Azure/AWS (or other cloud platforms).
Required Skills & Qualifications:
- 2+ years of experience in .NET development (C#, .NET Core/.NET 6+).
- Strong experience with MongoDB (schema design, aggregation pipelines, indexing).
- Proficiency in Entity Framework Core or other ORMs.
- Experience with REST APIs, microservices, and cloud platforms (Azure/AWS).
- Knowledge of Docker, Kubernetes, and CI/CD pipelines is a plus.
- Familiarity with message brokers (RabbitMQ, Kafka) is desirable.
- Strong understanding of OOP, design patterns, and clean code principles.
- Experience with unit testing (xUnit/NUnit/Moq).
- Good problem-solving skills and ability to work in a collaborative team.
- GraphQL experience/exposure would be a plus
We like to keep our job descriptions super simple, so please spend 3 minutes reading this.
Details about the job. You will ...
- Work very closely with the Head of Engineering and the CEO directly
- Own major parts of our tech stack (Node.js/React.js) and your job will be focused primarily on backend (Node/SQL/MQs etc.), but with some front-end JS work (React) as needed
- Design, code, and deliver top-quality software that performs beautifully at scale
- Take ownership for your job and treat it like it is your baby
- This job is based in Chennai (NOT Remote). But we have a lot of flexibility for when life situations require you to work from home
- We are only a 40 person company (by choice) - so you will get amazing ownership!
A Bit About You.
- Really strong in Javascript especially in Node.js with at least 5 years of experience - if you are genuinely not super strong, please do not apply as you will find our interviews challenging and it might be a waste of your time
- Also has React.js experience so that you can support the front-end work as needed
- A strong Engineer who LIKES building software - not just someone who knows the frameworks and can code
- We don't care about college degrees or if you are self taught - we only care that you're exceptional in your work and can be professional
- Must have strong communication skills
- Must be organized, and deliver their own work within deadlines, professionally
- Strong sense of ownership and take pride in your work.
What Will We Do For You?
- Office next to the beach
- "Sports team with a heart" mentality. Even though we work hard, we take care of our people.
- Free breakfast and snacks every day
- Non-hierarchical work environment
- Macbook Pro, free swag etc. of course!
- Huge potential for career growth - the limiting factor will be just your commitment and ambition.
Required Skills:
- .NET Core
- C#
- Web API
- Aware of Microservice concepts
- MongoDB
- Excellent communication
Docker, Kubernetes, and Linux knowledge is desirable. Having worked in a product development environment is desirable. Having worked in the finance and banking domain is desirable.
We are looking for a full stack Java Developer with an experience of 1+ years. The individual should have good technical knowledge of Core Java, Sql, Spring, Spring Batch, Spring Boot, Apache Spark. Exposure to sql databases like Oracle, Mysql, Microsoft Sql is a must. Any experience / knowledge / certification on Cloud technology preferrably Microsoft Azure is good to have. Exposures to non sql databases like Neo4j or Document database is again good to have.
The individual should have good knowledge of design patterns and also be able to implement them in desired conditions. Finally the individual should be smart and look to provide solutions for problems.
Reports to Technical Lead
Sr. React Native Developer
The candidate should be proficient in ReactJS, React Native and is able to develop application with
Redux.
The candidate must be fluent in Javascript (and Typescript) and its nuances including ES6+ syntax.
The candidate will be responsible for architecting and building these applications, as well as
coordinating with the teams responsible for other layers of the product infrastructure.
The candidate should have good working experience of project management tools like JIRA and is
able to understand the nuances of version control like GIT.
Building a product is a highly collaborative effort, and as such, a strong team player with a commitment
to perfection is required.
Primary Job Responsibilities
Build pixel-perfect, buttery smooth UIs across both mobile platforms.
Leverage native APIs for deep integrations with both platforms.
Maintain code and write automated tests to ensure the product is of the highest quality.
Collaborate with Project Management regarding priorities, timelines, and estimates
Contribute regularly and proactively in team discussions
Troubleshoot and problem-solve as needed, while developing and sharing innovative solutions
Proactively manage workflow and minimize downtime between assignments
Communicate consistently with supervisor regarding workload, challenges, and potential issues
Take ownership and pride in work and see the work through to completion
Additional Responsibilities
Project a positive, professional attitude at all times
Maintain open lines of communication with peers and department managers to help answer questions,
provide assistance, and promote an atmosphere of teamwork
Reach out to the open source community to encourage and help implement mission-critical software
fixes-React Native moves fast and often breaks things.
- Bachelor of Engineering or Masters Degree in Computer Science
- MEAN stack developer with
- Experience in software development, prototyping, functional analysis, integration, and testing.
- Experience with Javascript and RESTful technologies including building RESTful APIs
- In-depth understanding of the JavaScript programming languages especially Angular and node.js and the ability to peer review other engineer's code constructively
- Highly skilled at problem-solving, unit-testing, and debugging.
- Expert understanding of best practice engineering principles for building MEAN applications.
- In-depth knowledge of database systems and an understanding of data structures, data normalization, and query performance considerations. Particularly Non-Relational/NoSQL databases including MongoDB.
- Automated unit testing and CI experience
- Ability to effectively communicate technical concepts pictorially, orally or in writing.
- Docker experience desired
- Ability to learn business rules quickly by reading requirements, engaging in conversation, or reverse engineering.
- Expertise in source code control and versioning concepts.
Software Architect
Symbl is hiring a Software Architect who is passionate about leading cross-functional R&D teams. This role will serve as the Architect across the global organization driving product architecture, reducing information silos across the org to improve decision making, and coordinating with other engineering teams to ensure seamless integration with other Symbl services.
*Symbl is seeking for a leader with a demonstrated track record of leading cross-functional dev team, you are fit for the role if *
- You have a track record of designing and building large-scale, cloud-based, highly available software platforms.
- You have 8+ years of experience in software development with 2+ years in an architect role.
- You have experience working on customer-facing machine learning implementations (predictions, recommendations, anomaly detection)
- You are an API first developer who understands the power of platforms.
- You are passionate about enabling other developers through your leadership and driving teams to efficient decisions.
- You have the ability to balance long-term objectives with urgent short-term needs
- You can successfully lead teams through very challenging engineering problems.
- You are domain Expertise in one or more of: Data pipelines and workflow, telephony systems, real time audio and video streaming machine learning.
- You have bachelor's degree in a computer science-related field is a minimum requirement
- You’ll bring your deep experience with distributed systems and platform engineering principles to the table.
- You are passionate about operational excellence and know-how to build software that delivers it.
- You are able to think at scale, define, and meet stringent availability and performance SLAs while ensuring quality and resiliency challenges across our diverse product and tech stacks are addressed with NodeJs as mandatory, Java, Python, Javascript, ReactJS with intersection with ML platform + open source DBs.
- You understand end-user use cases and are driven to design optimal software that meets business needs.
Your day would look like:
- Work with your team providing engineering leadership and ensuring your resources are solving the most critical engineering problems while ensuring your products are scalable, performant, and highly available.
- Focused on delivering the highest quality of services, and you support your team as they push production code that impacts hundreds of Symbl customers.
- Spent time with engineering managers and developers to create and deliver critical new products and/or features that empower them to introduce change with quality and speed.
- Made sure to connect with your team, both local and remote, to ensure they are delivering on engineering and operational excellence.
*Job Location : Anywhere – Currently WFH due to COVID
Compensation, Perks, and Differentiators:
- Healthcare
- Unlimited PTO
- Paid sick days
- Paid holidays
- Flexi working
- Continuing education
- Equity and performance-based pay options
- Rewards & Recognition
- As our company evolves, so do our benefits. We’re actively innovating how we support our employees.
As a core member of the Software Development team, you will be responsible for the architecture, coding, development, testing and release of customer applications hosted both on-premise and on-cloud. Candidates with proven experience in both Frontend and Backend Development (predominantly Backend Development) with prior experience in deploying applications on AWS/Azure cloud will be preferred.
You will be leading a small team of developers (not more than 3 at a time) on a given project, and be a client-facing SPOC to work with the client and meet stringent deadlines. You will be responsible for Coding and Development with a code coverage of minimum 90%. You will adhere to coding and security standards and ensure that your delivery is secure and free from any critical, high and medium-rated vulnerabilities.
We are looking for a lean MERN Stack developer who is specialized in developing JavaScript-based technologies i.e. MongoDB, ExpressJS, ReactJS, NodeJS. If you have that energy and passion to create impacts, we have the perfect job for you! Job has flexible or temporary work from home options.
Job Responsibilities-
- Requirement gathering, UML & Database modelling and documentation
- Building interactive consumer data from multiple systems and RESTfully abstract to the UI through a Node.js backend
- Defining code architecture decisions to support a high-performance and scalable product with a minimal footprint
- Address and improve any technical issues
- Collaborate well with engineers, researchers, and data implementation specialists to design and create advanced, elegant and efficient systems.
Requirements-
- BSc degree in Computer Science or similar relevant field
- Previous working experience as a MERN Stack Developer for 3+ years
- Experience with modern frameworks and design patterns
- In depth knowledge of NodeJS, ExpressJS or Restify
- Experience of implementing applications using Angular or React
- Experience for creating front end applications using HTML5, CSS3 Angular, LESS/SASS
- Hands on experience with JavaScript Development on both client and server-side
- Knowledge of Functional Testing regarding Unit Testing, Integration Testing & End-to-End Testing is required
- Strong knowledge of Testing tools is required with subject to Jest and Enzyme, React Testing Library, Puppeteer (or PhantomJS, Nightmare or Headless Chrome) and Selenium WebDriver
- Rest API development, documentation and testing using tools like Postman
Knowledge of the following will be considered as an advantage-
- Requirements gathering, modeling, documentation and project management using Visual-paradigm.com
- Javascript based workflow engines and Flow-Based Programming
- Consumer Web Development Experience for High-Traffic, Public Facing web applications,
- Experience with cloud technologies
- Creating secure RESTful-based web services in XML and JSON, JavaScript, JQuery,
- Continuous integration (Jenkins/Hudson) and version control (SVN, Git).
- Converting UI and website designs (.psd, .xd, etc) into react components using Storybook.js and creating test cases with scripts; including documentation and automated visual testing
- React with WordPress Headless CMS using frameworks like Frontity.org
- org for authorization and access control models
- io microfrontend’s architecture framework for highly modular fully flexible applications
- Speech Recognition , voice interface , and other AI functionility
- React native mobile, Electron desktop application conversion
- Heroku Pipelines, Heroku: Browser and UAT, Heroku CI, DevOps tools and processes.















