MERN Stack Developer

Simstar.co is a billion-dollar diamond enterprise, a joint venture between Sim Gems Group and Star Gems Group.

We combine decades of expertise in jewelry manufacturing and trading with modern technology and data-driven operations.

Our 25-member Tech, Product, and ERP team is the engine behind digital innovation at Simstar. We’re now looking to expand this team with a Senior Software Engineer (SSE) who can help us scale faster.

Role Overview

As a Senior Software Engineer, you’ll be responsible for building and maintaining high-performance web applications across the stack. You’ll collaborate with product managers, designers, and business stakeholders to translate complex business needs into reliable digital systems.

Key Responsibilities

• Design, build, and maintain scalable web applications end-to-end.
• Work closely with product and design teams to deliver user-centric, high-performance interfaces.
• Develop and optimize backend APIs, database queries, and integrations.
• Write clean, maintainable, and testable code following best practices.
• Mentor junior developers and contribute to team-wide tech decisions.

Requirements

• Experience: 5+ years of hands-on full-stack development experience.
• Backend: Proficiency in Python (Java, RoR, or Node.js experience is fine if you can ramp up on Python quickly).
• Frontend: Experience with React, Angular, or Vue.js.
• Database: Strong knowledge of SQL databases (MySQL, PostgreSQL, or Oracle).
• Communication: Comfortable in English or Hindi.
• Location: Bangalore, 5 days a week (Work from Office).
• Availability: Immediate joiners preferred.

Why Join Us

• Be part of a fast-growing global diamond brand backed by two industry leaders.
• Collaborate with a sharp, experienced tech and product team solving real-world business challenges.
• Work at the intersection of luxury, data, and innovation — building systems that directly impact global operations.

Full Stack Developer (Senior Lead)

• Department: IT
• Location: Gurugram / Mohali / Karnal
• Shift: General
• CTC: 10–30% hike on last CTC (Max ₹20 LPA)
• Experience: 2Years-10Years
• Language: English
• Skills & Requirements:
• Core: React, Node.js
• Additional (Good to Have): Python, Flutter, Angular
• Strong problem-solving and system design skills
• Proven leadership in software teams
• Experience in building scalable web applications

Overview:

We are seeking a skilled Full Stack Engineer with strong backend experience in .NET/.NET Core and frontend development using TypeScript and modern JavaScript frameworks. You will play a key role in building robust, scalable web applications that deliver a seamless user experience.

Responsibilities:

• Design, develop, and maintain backend services and APIs using .NET/.NET Core (C#)
• Build responsive and interactive frontend components using TypeScript and frameworks like React, Angular, or Vue
• Collaborate cross-functionally with designers, product managers, and other engineers
• Ensure code quality through unit testing, code reviews, and best practices
• Optimize application performance and scalability

Requirements:

• Strong programming skills in C# and experience with .NET/.NET Core
• Proficiency in TypeScript and modern frontend frameworks (React, Angular, or Vue)
• Experience with REST APIs, relational and/or NoSQL databases, and Git
• Solid understanding of web security, performance, and responsive design
• Strong problem-solving and communication skills

Nice to Have:

• Experience with cloud platforms such as Azure or AWS
• Familiarity with containerization tools like Docker and orchestration using Kubernetes
• CI/CD pipeline knowledge

About Vyapar:

We are a technology and innovation company in the fintech space, delivering business accounting software to Micro, Small & Medium Enterprises (MSMEs). With more than 5 Million users across 140 countries, we are one of the fastest growing companies in this space. We take the complexity out of invoicing, inventory management & accounting, making it so simple, such that small businesses can spend less time on manual bookkeeping and spend more time focusing on areas of business that matter.

Role Summary:

Vyapar's Engineering team builds the technology platform that eases and digitizes our customers' bookkeeping and enables the transition of cumbersome accounting data from general bookkeeping to a digitized always available resource.

The Javascript engineer will be responsible for the developing features in Vyapar application. Strong understanding of HTML, CSS, JavaScript, Responsive design, JQuery, React, database etc. concepts is critical

Key Responsibilities:

• Translate designs and wireframes into high-quality code.
• Design, build and maintain high performance, reusable, and reliable code.
• Ensure the best possible performance, quality, and responsiveness of the application.
• Use of complex algorithm to build the business requirements.
• Help maintain code quality, organization, and automatization.
• Ability to understand business requirements and translate them into technical requirements

Desired Skills And Requirements

Must have

• Strong JavaScript
• HTML, CSS 
• React/Angular/JQuery/Vue
• Problem-solving skills, and Data Structures.
• Strong knowledge of SQL database or RDBMS.

Good to have

• Familiarity with RESTful APIs to connect applications to back-end services.
• Strong knowledge of Web UI design principles, patterns, and best practices.
• Experience with offline storage and performance tuning.
• Experience and understanding of database concepts and sql queries.
• Familiarity with cloud message APIs and push notifications.
• Familiarity with continuous integration.
• A knack for benchmarking and optimization.

Experience:

• Minimum 4 years of experience in JavaScript
• Minimum 3 years of experience in HTML, CSS
• Minimum 3 years of experience in SQL/ RDBMS.

Education:

• A full-time B.E/ B.Tech Degree from a recognized university.

• Solid background and proven experience in the tech stacks
• Strong proficiency in JavaScript
• Proficiency in HTML, CSS, JavaScript and jQuery
• Familiar with JavaScript frameworks such as jQuery, ReactJS
• Understanding and Work experience in ES6, Redux, Regex, MaterialUI and MUIdatatables is a plus
• Should be familiar with REST API’s
• Excellent communication and team handling skills
• Great attention to detail and problem-solving skills

Are you an ambitious Backend or Full Stack Tech Lead looking for a challenging role where you can learn and achieve lots more?

We are looking for Team Leads to come & join our agile team of professionals. If you are passionate about technology, constantly seeking to learn and improve your skillset, have hands-on experience of working on LAMP Stack with PHP / Laravel, then you are the type of person we are looking for.

We are offering superb career growth opportunities, great compensation, and benefits.

Responsibilities

• Revise, edit, proofread & optimize web content
• Perform code reviews, unit testing, and continuous integration
• Work cross-functionally to enhance the overall user experience of our platforms
• Own various design tasks involved in the web development life cycle from start to finish
• Develop, record, and maintain cutting edge web-based PHP/Node applications on portal plus premium service platforms
• Build innovative, state-of-the-art applications and collaborate with the User Experience (UX) team
• Ensure HTML, CSS, and shared JavaScript is valid and consistent across applications
• Prepare and maintain all applications utilizing standard development tools
• Utilize backend data services and contribute to increasing existing data services API
• Lead the entire web application development life cycle right from concept stage to delivery and post-launch support
• Convey effectively with all task progress, evaluations, suggestions, schedules along with technical and process issues
• Document the development process, architecture, and standard components
• Coordinate with co-developers and keeps project manager well informed of the status of development effort and serves as a liaison between development staff and project manager
• Keep abreast of new trends and best practices in web development

Qualifications

• Bachelor's / Master's degree or equivalent experience in Computer Science
• Experience using HTML, CSS, and JavaScript
• Proficiency in server-side technology (PHP)
• Ability to multi-task, organize, and prioritize work
• Previous working experience as a PHP / Laravel Developer
• Hands-on experience with SQL schema design, SOLID principles, REST API design 
• MySQL profiling and query optimization
• Creative and efficient problem solver

1. Good communication skills, should able to demonstrate website features
2. Must have good hands-on experience on HTML/CSS and Javascript,C#
3. Experience using SQL to update and retrieve data
4. Good to have experience with vue.js, AngularJS, selenium frameworks and code repositories such as GitLab
5. Analytical skills
6. Understanding of testing frameworks

1. Collaborate with other developers and engineers to design, build, and maintain applications
2. Candidate is responsible for design and development of small modules in ASP.Net core MVC, C#, SQL Server and client side technology as javascript/jquery
3. Write and debug code
4. Troubleshoot application issues
5. Ability to learn and pick up new frameworks