Mern Stack Developer

Position : Tech Lead – Fullstack Developer

Experience : 7 to 15 Years

Location : MG Road, Bengaluru (Hybrid – 3 Days in Office)

Notice Period : Immediate / Serving / 15 Days or Less

About the Opportunity :

We are hiring a Tech Lead – Fullstack Developer for a well-funded product startup building an enterprise-grade SaaS platform in the Cybersecurity domain.

The role involves designing and delivering scalable microservices and cloud-native applications in a high-performing, Agile engineering environment.

You'll work alongside industry veterans from billion-dollar digital firms, contributing to technical design, product architecture, and engineering best practices.

Mandatory Skills : Java, Spring Boot, ReactJS (or any modern JavaScript framework), RESTful APIs, PostgreSQL, Docker, Kubernetes, CI/CD, Hibernate/JPA, Multithreading, and Microservices architecture.

Role Highlights :

• Lead fullstack product development using Java (Spring Boot) and ReactJS (or similar frameworks).
• Design, develop, test, and deploy scalable microservices and RESTful APIs.
• Collaborate with Product, DevOps, and QA teams in a fast-paced Agile environment.
• Write modular, secure, and efficient code optimized for performance and maintainability.
• Mentor junior developers and influence architecture decisions across the team.
• Participate in all stages of the product lifecycle, from design to deployment.
• Create technical documentation, UML diagrams, and contribute to knowledge-sharing through blogs or whitepapers.

Key Skills Required :

1. Strong expertise in Java (mandatory) and Spring Boot.
2. Proficient in frontend development using ReactJS or similar frameworks.
3. Hands-on experience building and consuming RESTful APIs.
4. Solid knowledge of PostgreSQL, Hibernate/JPA, and transaction management.
5. Familiarity with Docker, Kubernetes, and cloud platforms (Azure/GCP).
6. Understanding of API Gateway, ACID properties, multithreading, and performance tuning.
7. Experience with CI/CD tools (Jenkins, GitHub Actions, GitLab CI) and Agile methodologies.
8. Strong debugging and profiling skills for performance bottlenecks.

Nice to Have :

• Experience with data integration tools (e.g., Pentaho, Apache NiFi).
• Exposure to the Healthcare or Cybersecurity domain.
• Familiarity with OpenAI APIs or real-time analytics tools.
• Willingness to contribute to internal documentation, blog posts, or whitepapers.

Perks & Benefits :

• Opportunity to build a product from scratch.
• Flat hierarchy and direct access to leadership.
• Strong focus on learning, mentorship, and technical innovation.
• Collaborative startup culture with long-term growth opportunities.

Interview Process :

1. Technical Round – Technical Assessment
2. Technical Interview – Core Development
3. Advanced Technical Interview – Design & Problem Solving
4. Final Round – CTO Discussion

Responsibilities

• Design and develop scalable web applications using Java and Angular/React
• Collaborate with cross-functional teams to define, design, and ship new features
• Maintain code quality through code reviews and automated testing
• Implement RESTful APIs to support front-end functionality
• Troubleshoot and debug applications to ensure optimal performance
• Participate in agile development processes and contribute to continuous improvement

Qualifications

• Bachelor's degree in Computer Science or related field
• 3+ years of experience in full stack development using Java and Angular/React
• Strong understanding of front-end technologies like HTML, CSS, and JavaScript
• Experience with back-end development including RESTful API design
• Familiarity with database technologies such as SQL and NoSQL
• Excellent problem-solving skills and attention to detail

Vacancy: Full Stack Senior developer for BeYoungBrands start-up - Paris.

Project description:

We are a small innovative team with a big-picture vision. 

Our goal - to help people be healthier, younger, happier and to live long and active lives.   

We are advocates of holistic approach and inclusion. We believe that the best results are brought by uniting science and ancient wisdom which science cannot explain yet.  

Our goal is very challenging – we want to create a one-point access tool to manage induvial wellbeing and health (with a collaboration platform with doctors) from the convenience of home and smartphones.

Our goal if far beyond just teaching how to eat and exercise healthier.  We want gradually to transform the way a patient and client talk and communicate about health issues. 

Our future network of doctors will include only best medicines embracing the holistic approach to each client, accepting limitation and negative impacts of some modern therapies and willing to accept the usage of alternative and holistic therapies by their patients.   

Role description:

The successful candidate to join our team will be the first architect of our ambitious project.  Along with immensely challenging tasks and responsibility, he/she will have joy of being the person to layout the design and develop the initial model of the product.

We are looking for a self-starter with already proven experience. The job will have a title of senior developer and an employee will have to deliver to its title.  We put great worth on the personality of a candidate and his/her ability to get things done, to deliver results and to quickly update one’s knowledge based on the requirement of a task at hand.

Job description:

3+ years of experience

Candidate with experience in both Backend and Frontend technology using Java and Python with JavaScript/Angular/Django. Would prefer Full Stack experience in the current project.

Internal Title: Senior Developer

Experience Range: Mid Level with a proven track record in the development

Skill(s): Python, Django, JavaScript, AngularJS/ReactJS, NodeJS, MongoDB, ExpressJS

Education:

• Bachelor's in Computer Science (Required)
• Master (preferred)

Job Type: Full-time
Location(s): Remote

Responsibilities

• Design, build and maintain efficient, reusable, and reliable codes for front and backend development.
• Build a layout for structured system data and regularly feed and update it.
• Conceptualizing and developing the data, programming and analysis for online behaviour.
• Building a first draft of the AI algorithm.
• Programming machine learning and its applications.
• Design client-side and server-side architecture
• Build the front-end of applications through appealing visual design.
• Develop and manage well-functioning databases and applications.
• Write effective APIs
• Test software to ensure responsiveness and efficiency
• Troubleshoot, debug and upgrade application.
• Create security and data protection settings.
• Build features and applications with a mobile responsive design.
• Write technical documentation.
• Work with data scientists and analysts to improve software

Technical and Professional Requirements

• Minimum 3 years of relevant experience.
• Proven work experience as a Full Stack developer (Anyone project would do, we are open for freshers with great knowledge and proven experience too).
• In-depth understanding of the entire web development process (design, development and deployment)
• Strong understanding of data structures/algorithm.
• Excellent coding skill in Node js/Angular/Reactjs, JavaScript, Python, Shell Scripts, Groovy.
• Experience in designing, developing and building end to end web applications.
• Responsive Web Design Development experience
• Experience in web libraries.
• Experience with one or more of databases.
• Experience working with deployment and orchestration technologies.
• Knowledge of Agile engineering and testing practices.
• Must have flexibility in work hours
• Knowledge of API Design and Development and Security Patterns on API’s using API Gateway.
• Familiar with modern reactive frameworks and Event-Driven architectural patterns.
• Implementing automated testing platforms and unit tests.
• Good Error and Exceptional Handling Skills.
• Knowledge of Automation scripts.
• Experience in Cloud Technology for Deployment of Services is a plus.
• Analyzing user requirements, envisioning system features and functionality.
• Identify bottlenecks and bugs, and recommend system solutions by comparing advantages and disadvantages of custom development.
• Understand Architecture Requirements and ensure effective Design, Development, Validation, Testing and Performance, monitoring.
• Strong knowledge of front-end languages (e.g. HTML, JavaScript and CSS)
• Very strong Integration knowledge is desired.
• Excellent analytical and time management skills
• Teamwork skills with a problem-solving attitude.

Deliveries plan and personal achievements goal for a

role of Senior developer in BeYoungBrands

1. First 3 months at the role
   1. Develop and builds a new multilingual website to reflect the main features of the project and backend structure.
   2. Build initial backend design and architecture.
   3. Develop personal area zone with automated functions.
   4. Develop security strategy to protect sensitive client information.
   5. Start building algorithm on existing processes and activities of a clients. Integarate currently available research into algorithm.
   6. Be support on daily tasks and automations.
   7. Propose and replace external resources for automation or selling tools with own development plan.
2. Second 3 months at role:
   1. Continue developing interactive client area.
   2. Work further on algoright with integrating research database, database of clients actions and reported results.
   3. Start building mobile application for everyting what is already done in platform.
   4. Build food extension of the platform and mobile section to it with full food directory database, menu planning, photo recognition, input areas and calories calculations.
   5. Start building exercise module (possible with 3^rd party license to use, to be discussed), with video, calories count, instructions, etc.

Job Description:

We are seeking an experienced Full Stack React Developer who is passionate about building and maintaining scalable mobile and web applications. The ideal candidate will have a strong background in both front-end and back-end development, with expertise in React for web and React Native for mobile development. You will work closely with our founder to implement new features, optimize performance, and ensure the highest quality user experience across both platforms.

Key Responsibilities:

• Develop and maintain the front-end of our app using React for web and React Native for mobile.

• Build and manage the back-end services and APIs to support both the mobile and web apps, including database design and integration.

• Implement responsive design principles to ensure the app works seamlessly across various devices and screen sizes.

• Optimize the app for maximum speed and scalability.

• Integrate third-party services and APIs as needed.

• Troubleshoot and debug issues to ensure the apps run smoothly on both web and mobile platforms.

Requirements:

• Proven experience as a Full Stack Developer or similar role with a focus on React and React Native.

• Strong proficiency in JavaScript, HTML, and CSS.

• Experience with back-end frameworks (Node.js, Express, Firebase etc.).

• Proficiency in database design and management (Firestore, SQL, NoSQL).

• Experience with RESTful APIs and third-party integrations.

• Familiarity with version control systems (Git).

• Knowledge of responsive design principles and mobile-first development.

• Excellent problem-solving skills and attention to detail.

• Strong communication skills and the ability to work collaboratively in a remote team environment.

Preferred Qualifications:

• Experience in building and scaling e-commerce or rental platforms.

• Familiarity with cloud services (AWS, Google Cloud, etc.).

• Understanding of CI/CD pipelines and automated testing.

• Knowledge of UI/UX design principles.

• BTech, BE, BS degree in Computer Science, a similar technical field of study, or equivalent practical experience.
• 6+ years experience in web and software development.

• 3+ years of experience with the microservices architecture.
• At least 1 year of experience in leading a team.
• Demonstrated experience in Node, Mongo, Python2/3, Express, ReactJS.
• Experience with testing frameworks like Mocha, Jest, Jasmine etc.
• Experience with asynchronous messaging using RabbitMQ/Apache Kafka.
• Ability to work independently and multi-task effectively.
• Flexible and willing to accept a change in priorities as necessary.
• Strong attention to detail.

Design and build applications, bug fixing and improving application performance.

• Delegate tasks and achieve daily, weekly, and monthly goals.
• Enforce processes to improve productivity of the team.
• Collaborate with cross-functional teams to define, design, and ship new features.
• Work on continuously discovering, evaluating, and implementing new technologies to maximize

development efficiency.

At Smart Audit, we rely on our dynamic team of engineers to solve the many challenges and puzzles that come with our rapidly evolving technical stack. We’re seeking a full-stack engineer who is ready to work with new technologies and architectures in a forward-thinking organization that’s always pushing boundaries. Here, you will take complete, end-to-end ownership of projects across the entire stack. Our ideal candidate has experience building products across the stack and a firm understanding of web frameworks, APIs, databases, and back end languages. You’ll be joining a small team working at the forefront of new technology, solving the challenges that impact both the front end and back end architecture, and ultimately, deliver amazing global user experiences.

What do we expect:

• Experience in MERN Stack
• Passion for learning & solving challenging problems
• Hands-on role and huge potential to grow
• Saas experience and design skills are a huge plus
• Creative thinking