Full Stack JavaScript Developer - React.js/Redux/Node.js

Role: Core infrastructure for two global applications.

Key responsibilities:

Heavy Data Lifting: Designing and maintaining complex MongoDB aggregation pipelines and executing high-volume bulk updates.

Systems Connectivity: Managing the lifecycle of Bridges, WebSockets, and REST APIs for global traffic.

Global Reliability: Troubleshooting performance regressions, managing SSL/TLS certificates, and optimizing AWS S3/EC2 resources.

Core Logic: Implementing server-side push notifications, custom payment flows, and background Cron orchestration.

Requirements (Must Have)

Production Experience: Proven experience managing backend services for live, high-traffic applications. (Must have)

Note: Learning projects, bootcamps, and online courses will not be considered.

Python Mastery: Expert-level proficiency in backend Python development. (Must have)

MongoDB Expertise: Deep knowledge of Aggregations and Bulk operations. (Must have)

AWS Proficiency: Direct experience with S3 and EC2 in a production setting. (Must have)

Infrastructure Logic: Ability to manage SSL/Encryption and optimize resource allocation (Cron vs. API). (Must have)

Job Details

- Job Title: Full Stack Engineer

- Industry: SAAS

- Function – Information Technology

- Experience Required: 5-7 years

- Working Days: 6 days

- Employment Type: Full Time

- Job Location: Bangalore

- CTC Range: Best in Industry

Preferred Skills: TypeScript, NodeJS, mongodb, RESTful APIs, React.js

Criteria

Candidate should have at least 4+ years of professional experience as a Full Stack Engineer

Hands-on experience with both React.js and Node.js

Solid understanding of MongoDB

Should have experience in RESTful APIs

Should be from a startup or scale up companies

Should have good experience in Typescript

Strong understanding of asynchronous programming patterns

Preferred candidates from SAAS/Software/IT Services based startups or scaleup companies

Job Description

The Role:

We’re looking for a Full Stack Engineer to build, scale, and maintain high-performance web applications for company’s technology platforms. This role involves working across the stack-frontend, backend, and infrastructure - using modern JavaScript-based technologies.

You’ll collaborate closely with product managers, designers, and cross-functional engineering teams to deliver scalable, secure, and user-centric solutions. This role is ideal for someone who enjoys end-to-end ownership, technical problem-solving, and working in a fast-paced startup environment.

What You’ll Own

1. Full Stack Development

● Design, develop, test, and deploy robust and scalable web applications.

● Build and maintain server-side logic and microservices using Node.js, Express.js, and TypeScript.

● Contribute to frontend feature development and integration.

● Participate in feature planning, estimation, and execution.

2. Backend & API Engineering

● Design and develop RESTful APIs and backend services.

● Implement asynchronous workflows and scalable microservice architectures.

● Ensure performance, reliability, and security of backend systems.

● Implement authentication, authorization, and data protection best practices.

3. Database Design & Optimization

● Design and manage MongoDB schemas using Mongoose.

● Optimize queries and database performance for scale.

● Ensure data integrity and efficient data access patterns.

4. Frontend Collaboration & Integration

● Collaborate with frontend developers to integrate React components and APIs seamlessly.

● Ensure responsive, high-performing application behavior.

5. System Design & Scalability

● Contribute to system architecture and technical design discussions.

● Design scalable, maintainable, and future-ready solutions.

● Optimize applications for speed and scalability.

6. Product & Cross-Functional Collaboration

● Work closely with product and design teams to deliver high-quality features in rapid iterations.

● Participate in the full development lifecycle—from concept to deployment and maintenance.

7. Code Quality & Best Practices

● Write clean, testable, and maintainable code.

● Follow Git-based version control and code review best practices.

● Contribute to improving engineering standards and workflows.

What We’re Looking For

Must-Haves

● 4+ years of professional experience as a Full Stack Engineer or similar role.

● Strong proficiency in JavaScript and TypeScript.

● Hands-on experience with Node.js and Express.js.

● Solid understanding of MongoDB and Mongoose.

● Experience building and consuming RESTful APIs and microservices.

● Strong understanding of asynchronous programming patterns.

● Good grasp of system design principles and application architecture.

● Experience with Git and version control best practices.

● Bachelor’s degree in Computer Science, Engineering, or a related field.

Good-to-Have / Preferred

● Frontend development experience with React.js.

● Exposure to Three.js or similar 3D/visualization libraries.

● Experience with cloud platforms (AWS, GCP, Azure – EC2, S3, Lambda).

● Knowledge of Docker and containerization workflows.

● Experience with testing frameworks (Jest, Mocha, etc.).

● Familiarity with CI/CD pipelines and automated deployments.

Tools You’ll Use

● Backend: Node.js, Express.js, TypeScript

● Frontend: React.js (preferred)

● Database: MongoDB, Mongoose

● Version Control: Git, GitHub / GitLab

● Cloud & DevOps: AWS / GCP / Azure, Docker

● Collaboration: Google Workspace, Notion, Slack

Key Metrics You’ll Own

● Code quality, performance, and scalability

● Timely delivery of features and releases

● System reliability and reduction in production issues

● Contribution to architectural improvements

Why company

● Work on impactful, product-driven tech platforms.

● High-ownership role with end-to-end engineering exposure.

● Opportunity to work with modern technologies and evolving architectures.

● Collaborative startup culture with strong learning and growth opportunities.

Responsibilities

• Build and maintain frontend applications using Next.js, React, TypeScript, and TailwindCSS
• Design and develop RESTful APIs using Node.js and Express.js
• Integrate frontend with backend APIs efficiently
• Write clean, reusable, and well-documented code
• Optimize applications for performance, SEO, and scalability
• Work with databases to design schemas and write optimized queries
• Implement authentication, authorization, and role-based access
• Debug, test, and improve existing systems
• Collaborate with designers and product managers to translate requirements into technical solutions
• Participate in code reviews and technical discussions

What’s the opportunity?

Are you a backend developer looking to fast-track your learning and growth? Have you looked at world-class products like Asana, Notion, or Airtable, and felt “I wish I were part of the early team that built these products”?

We’re a team that has previously built and rolled out globally successful SaaS products used by tens of thousands of customers. We’re laser-focused on delivering a world-class product again, and looking for an ambitious backend engineer to join our existing team of 9 engineers. 

If it excites you to think of a fast-paced start-up environment, building something big from scratch, breaking down new problems, creating new APIs, working on performance issues, getting hands-on with DevOps initiatives, and showcasing demos of your work every Friday with a happy and passionate team, then this is the right opportunity for you.

Some of the tech problems you get to work on as a backend engineer would be to build the backend for a modern spreadsheet experience from scratch, work on infra as code, write robust code that is fault-tolerant, work on performant code that adheres to SLOs set by the organization.

About you:

● 3- 5 years of experience

● Expertise in the following areas ○ Java ○ HTTP Protocol

● You’ve heard of or worked with some of the following tech stacks/products ○ Spring ○ PostgreSQL ○ Redis ○ Docker ○ Message brokers ○ GitHub

● These non-functional areas are familiar to you ○ Performance ○ Debugging ○ Log management

Nice to have:

● Familiarity with AWS

What’s in it for me?

● Great opportunity: We genuinely care about everyone we hire. You’ll learn new things and grow no matter how experienced you are; you will be working with founders who have more than three decades of collective experience in building significant B2B SaaS startups.

● Great team: Work with a world-class, high-velocity team that truly embodies the values of empathy, curiosity, and customer-centricity. Check out the MTT(Meet The Team) videos on our LinkedIn.

● Great culture: An open, fun, and exciting startup culture that empowers its people to champion big problems with the freedom to think and innovate.

● Growth: You could easily and quickly transition into other roles you might like.

● Impact: You get to be part of a global, passionate team in a fast-paced and growth-oriented environment. The team has a work philosophy of being high on ambition, ownership, and a bias for action.

● Monetary rewards and benefits: Competitive stipend, flexible leave policy, and more

Availability: Full time  

Location: Pune, India  

Experience: 4- 6 years 

Tvarit Solutions Private Limited (wholly owned subsidiary of TVARIT GmbH, Germany). TVARIT provides software to reduce manufacturing waste like scrap, energy, and machine downtime using its patented technology. With its software products, and highly competent team from renowned Universities, TVARIT has gained customer trust across 4 continents within a short span of 5 years. TVARIT is awarded among the top 8 out of 490 AI companies by European Data Incubator, apart from many more awards by the German government and industrial organizations making TVARIT one of the most innovative AI companies in Germany and Europe.   

We are looking for a passionate Full Stack Developer Level 2 to join our technology team in Pune. You will be responsible for handling operations, design, development, testing, leading the software development team and working toward infrastructure development that will support the company’s solutions. You will get an opportunity to work closely on projects that will involve the automation of the manufacturing process.  

Key responsibilities 

• Creating Plugins for Open-Source framework Grafana using React & Golang. 
• Develop pixel-perfect implementation of the front end using React. 
• Design efficient DB interaction to optimize performance. 
• Interact with and build Python APIs. 
• Collaborate across teams and lead/train the junior developers. 
• Design and maintain functional requirement documents and guides. 
• Get feedback from, and build solutions for, users and customers. 

Must have worked on these technologies.  

• 2+ years of experience working with React-Typescript on a production level 
• Experience with API creation using node.js or Python 
• GitHub or any other SVC   
• Have worked with any Linux/Unix-based operating system (Ubuntu, Debian, MacOS, etc)  

Good to have experience: 

• Python-based backend technologies, relational and no-relational databases, Python Web Frameworks (Django or Flask) 
• Experience with the Go programming language 
• Experience working with Grafana, or on any other micro frontend architecture framework 
• Experience with Docker 
• Leading a team for at least a year 

Benefits and perks:

• Culture of innovation, creativity, learning, and even failure, we believe in bringing out the best in you. 
• Progressive leave policy for effective work-life balance. 
• Get mentored by highly qualified internal resource groups and opportunities to avail industry-driven mentorship programs.
• Multicultural peer groups and supportive workplace policies.  
• Work from beaches, hills, mountains, and many more with the yearly workcation program; we believe in mixing elements of vacation and work. 

How it's like to work for a Startup?

Working for TVARIT (deep-tech German IT Startup) can offer you a unique blend of innovation, collaboration, and growth opportunities. But it's essential to approach it with a willingness to adapt and thrive in a dynamic environment.

If this position sparked your interest, do apply today!

By submitting my documents for the recruitment process, I agree that my data will be processed for the purpose of the recruitment process and stored for an additional 6 months after the process is completed. Without your consent, we unfortunately cannot consider your documents for the recruitment process. You can revoke your consent at any time. Further information on how we process your data can be found in our privacy policy at the following link: https://tvarit.com/privacy-policy/

Durch das Abschicken meiner Unterlagen für den Rrecruitingprozess erkläre ich mich damit einverstanden, dass meine Daten zum Zweck des Recruitingprozesses verarbeitet und nach Abschluss des Recruitingprozesses für weitere 6 Monate gespeichert werden. Ohne dein Einverständnis können wir deine Unterlagen für den Rrecruitingprozess leider nicht berücksichtigen. Du kannst dein Einverständnis jederzeit widerrufen. Weitere Informationen, wie wir deine Daten verarbeiten findest du in unserer Datenschutzerklärung unter folgendem Link: https://tvarit.com/privacy-policy/ 

Roles and Responsibilities
1. Ability to work on diverse backend stack such as Node JS, Express JS
2. Ability to work on diverse frontend stack such as Meteor JS, React JS, HTML5, CSS3

3. Ability to deliver quick POC’s using cutting edge technologies.

4. Preparing reports, manuals and other documentation on the status, operation and maintenance of software.

5. Design, develop, and unit test applications in accordance with established standards

6. Developing, refining, and tuning integrations between applications. Analyzing and resolving technical and application problems.

7. Ability to debug the application.

8. Should have complete knowledge of developing RESTful Services.

9. Should be able to also work in agile development methodology.
10. Work with designated JavaScript framework to design, develop, and debug web applications
11. Work with the team to manage, optimize, and customize multiple web applications
12. Manage end to end module lifecycle management of the product
13. Push and pull codes via Git repository

Competency Requirements

1. Experience in NodeJS and development using MeteroJS
2. Experience in front end frameworks - Meteor JS
3. Experience in client/server application development
4. Knowledge of agile development methodologies
5. Knowledge of unit testing theory
6. Knowledge of AWS cloud
7. Knowledge of other frontend frameworks like ReactJS, AngularJS will be an advantage

Job Description:

• 3 - 4 years of hands-on Python programming & libraries like PyData, Pandas
• Exposure to Mongo DB
• Experience in writing Unit Test cases
• Expertise in writing medium/advanced SQL Database queries
• Strong Verbal/Written communication skills
• Ability to work with onsite counterpart teams

• Relevant Experience : Minimum 2 Years
• You have prior experience developing and working on consumer facing web/app products
• Hands-on experience on Python. Exceptions can be made if you’re really good on any other language with experience on building web/app based tech products
• Experience in at least one of the following frameworks - Django, Flask, Falcon, web2py, Twisted, Tornado
• Working knowledge of MySQL, MongoDB, Redis
• Good understanding of Data Structures, Algorithms and Operating Systems
• You've worked with core AWS services in the past and have experience with EC2, ELB, AutoScaling, CloudFront, S3
• You can dabble in Frontend codebases using HTML, CSS and Javascript
• You love doing things efficiently. At Fynd, the work you do will have a disproportionate impact on the business. We believe in systems and processes that let us scale our impact to be larger than ourselves
• You might not have experience with all the tools that we use but you can learn those given the guidance and resources