MERN Stack Developer

Job Title - MERN Stack Developer

Experience Range – 3 to 6 Years

Location- Mumbai (Andheri East)

Mode- 5 Days working from office

Some specific Requirements:

• You have prior experience developing and working on consumer-facing web/app products
• Hands-on experience in JavaScript. Exceptions can be made if you’re really good at any other language with experience in building web/app-based tech products
• Expertise in Node.JS and Experience in at least one of the following frameworks - Express.js, Koa.js, Socket.io .
• Good knowledge of async programming using Callbacks, Promises, and Async/Await
• Hands-on experience with Frontend codebases using HTML, CSS, and AJAX
• Working knowledge of MongoDB, Redis, MySQL
• Good understanding of Data Structures, Algorithms, and Operating Systems
• You've worked with AWS services in the past and have experience with EC2, ELB, AutoScaling, CloudFront, S3
• Experience with Frontend Stack would be added advantage (HTML, CSS)
• You might not have experience with all the tools that we use but you can learn those given the guidance and resources
• Experience in Vue.js would be plus

Web Developer

Job Description

• The web developer will be responsible for providing full life-cycle development (design, coding, and testing) and maintenance of web-based system on Azure
• Candidate should have experience in GitHub, knowledge of DevOps is a plus
• Experienced in designing and implementing web portals, experience with DNN is a plus
• Ability to work with multiple languages including C#, ASP.Net, MVC, Javascript and related libraries, HTML, Complex SQL queries, CSS, BootStrap, JSON
• Experience in Agile project management methodology
• Developing and Delivering Excellent Web based solutions/portals/sites based on customer’s requirement within the stipulated timeline
• The candidate should be flexible to learn new technology and platform and should be creative, innovative for improvement ideas, detail oriented, diligent, and eager to learn and grow

Duties & Responsibilities:

• Understand how FTP server is setup for the site
• Understand business requirements to apply logic to integrate functionalities
• Identify and understand any technical bugs on the server, site, log files or modules and work on resolving the bugs
• Understand system/site technical requirements and suggest enhancements if applicable
• Designing, coding, unit Testing, and integration with Database
• Handle site deployment
• Designing, coding, debugging, technical problem solving, and writing Unit Test cases, etc.

Technical Expertise:

• ASP/ASP.NET/VB.NET/MVC/C#/SQL Server 2012+
• HTML, Javascript, Jquery, CSS, Bootstrap
• GitHub/DevOps, Azure
• Web API/ Web Services, Email Services

Skills and Abilities:

• Be able to work with diverse global teams and in an individual contributor role as needed
• Excellent English written and verbal communication skills (for local team and global stakeholders/team members)
• Strong task management skills including time management, and ability to manage multiple projects simultaneously
• Flexibility required to attend late evening meetings with global team members
• Attention to detail and delivering quality projects and knowledge assets

Why This Role Matters

We’re looking for a Principal Engineer to lead the architecture and execution of our GenAI-powered, self-serve marketing platforms. You will work directly with the CEO to shape, build, and scale products that change how marketers interact with data and AI. This is intrapreneurship in action — not a sandbox innovation lab, but a real-world product with traction, velocity, and high stakes.

What You'll Do

• Co-own product architecture and direction alongside the CEO.
• Build GenAI-native, full-stack platforms from MVP to scale — powered by LLMs, agents, and predictive AI.
• Own the full stack: React (frontend), Node.js/Python (backend), GCP (infra), BigQuery (data), and vector databases (AI).
• Lead a lean, high-caliber team with a hands-on, unblock-and-coach mindset.
• Drive rapid iteration with rigor, balancing short-term delivery with long-term resilience.
• Ensure scalability, observability, and fault tolerance in multi-tenant, cloud-native environments.
• Bridge business and tech — aligning execution with evolving user and market insights.

What You Bring

• 8–12 years of experience building and scaling full-stack, data-heavy or AI-driven products.
• Fluency in React, Node.js, and Google Cloud (Functions, BigQuery, Cloud SQL, Airflow, etc.).
• Hands-on experience with GenAI tools (LangChain, OpenAI APIs, LlamaIndex) is a bonus.
• Track record of shipping products from ambiguity to impact.
• Strong product mindset — your goal is user value, not just elegant code.
• Architectural leadership with ownership of engineering rigor and scaling best practices.
• Startup or founder DNA — you’ve built things from scratch and know how to move fast without breaking things.

Who You Are

• A former founder, senior IC, or tech lead who’s done zero-to-one and 1-to-n scaling.
• Hungry for ownership and velocity — frustrated by bureaucracy or stagnation.
• You code because you care about solving real problems for real users.
• You’re pragmatic, hands-on, and grounded in first principles.
• You understand that great software isn't just shipped — it's hardened, maintained, and evolves with minimal manual effort.
• You’re open to evolving into a founding engineer role with influence over the tech vision and culture.

What You Get

• Equity in a high-growth product-led startup.
• A chance to build global products out of India with full-stack and GenAI innovation.
• Access to high-context decision-making and direct collaboration with the CEO.
• A tight, ego-free team and a culture that values clarity, ownership, learning, and candor.

Why YOptima?

YOptima is redefining how leading marketers unlock growth through full-funnel, AI-powered media solutions. As part of our growth journey, this is your opportunity to own the growth charter for leading brands and agencies globally and shape the narrative of a next-generation marketing platform.

Ready to lead, build, and scale?

We’d love to hear from you.

• Drive the architecture and design of large-scale, multi-tiered, distributed software applications, tools, systems and services using object-oriented design, distributed programming, Java/Node/ Python, .Net.
• Hands on experience in delivering high quality software products.
• Gather business and functional requirements from external and/or internal customers and end-users, and translate requirements into technical specifications to build robust, scalable, supportable solutions that work well between a ranges of complex systems.
• Serve as technical lead throughout the full development lifecycle, end-to-end, from scoping, planning, conception, design, implementation and testing, to documentation, delivery and maintenance.
• Provide design reviews for other engineers, including feedback on architecture and design issues, as well as integration, performance and scalability.
• Manage resources on multiple technical projects and ensure schedules, milestones, and priorities are compatible with technology and business goals.

Role: Full Stack Web Developer (full time, remote)

Job description:
Ycenter is looking for a Full Stack Developer to join its Digital Innovations and product development team. This is a fully remote, full time position. You will be employed under the Ycenter India office.

We’re looking for a dynamic coder and problem-solver to work with our Digital Innovations team and help build web products that solve complex global problems for our clients. Preferably a Full Stack Developer / Software Engineer with 2-4 years of experience in building & maintaining web applications, not afraid of taking on new challenges in a fast paced startup environment, able to take leadership decisions independently (read: without a boss) and an obsession for effective & timely communication.

Why you should work with us:

1. If you’ve ever felt that technology should be used for social good, or wanted to create measurable impact through your work, this is the opportunity
2. Be a part of a global team of engineers, entrepreneurs, researchers, designers, and a bot to tackle complex business & social problems for our clients. Past clients include Abbott Global Healthcare, US Department of Commerce, GODAN (Global Open Data For Agriculture & Nutrition), Microsoft and United Nations.
3. Work directly with Ycenter’s leadership team and grab optional opportunities to learn Design Thinking, Leadership and Entrepreneurship (read: what makes a startup successful. We will tell you from experience)
4. Work on end-to-end projects that add real value to your portfolio.
5. We care about you as a person and the work you do, more than spreadsheets and corporate KPIs. In fact if you love spreadsheets, this role is not for you.
6. We are obsessed about pop culture, good movies, TV shows, books and music. We will probably judge you by your Netflix Watch History more than your CV.

Responsibilities:

1. Build end-to-end web applications and test for performance based on predefined scope.
2. Work with Ycenter's leadership team to integrate business requirements with technical architecture and understand the product development roadmap.
3. Analyze & optimize user metrics, system performance and database security.
4. Work with Ycenter’s leadership team to conduct user research and design UX/UI.
5. Optimize search engine performance.
6. Maintain third-party API integrations & help automate client business processes. 

Skills & technologies: 

• Should be proficient in at least one object oriented programming language: C++ / Java / Python / JavaScript
• Skilled at and experienced in web application development with the following full-stack competency:

1. Preferred stack: MERN (MongoDB, ExpressJS, React, NodeJS)
   Alternate stack: LAMP with Laravel framework
2. Should be familiar with building Progressive Web Applications using custom service workers for offline functionality
3. Experience with offline storage, threading, and performance tuning 
4. Proficient in frontend development using HTML5, CSS3, JavaScript, JQuery, JSON
5. Knowledge of Javascript-based data visualization & graph libraries
6. Knowledge of and experience in server-side scripting and process automation
7. Knowledge of and experience in MySQL database operations & optimization.
8. Knowledge of and experience in building & handling REST APIs
9. Knowledge of and experience in server environment setup & application deployment in either AWS or Microsoft Azure
10. Knowledge of building Python-based applications is a bonus but not a requirement

• Should have experience with UI/UX design
• Should be familiar with the Git version control system.
• Should be experienced in application testing (manual) and CI/CD workflow
• Should be comfortable working with DevOps processes using Agile methodology

Who We Are Looking For:

We are looking for a driven Blockchain & Solidity Developer who learns fast, who is humble and values teamwork. The ideal candidate will be technical, data-driven, creative, and efficient. The kind of person who joins our Team is passionate and willing to think outside of the box and execute on it. We are committed to helping you grow, challenging you with hard, meaningful work and celebrating our successes and failures together.

Preferred Experience:

• 3+ years of software experience ( Full stack) , 1+ years of Solidity development experience
• Presently leading as CTO, Tech Lead or Technical Project manager at established crypto project

Technical Skills

• Experience in development of solidity smart contracts and operating mechanism of blockchain encryption algorithms, consensus mechanism, security protocols etc.
• Proven work experience of deployments on ETH/BSC/MATIC networks and other EVM Chains
• Understanding of virtual machine architecture, memory, and stack.
• Familiar with Truffle, Waffle, and Hardhat, and the pros and cons of each framework.
• Familiarity with code versioning tools (git) and repo management.
• (Plus) Understanding of mainstream DeFi ecosystems like Uniswap, Compound, Curve etc.

Soft Skills

• Proficiency in English & Communication
• Team Collaboration and task management

What You Will Be Doing:

• Collaborates with the team on conceptualizing and developing new applications. Write high-quality, pragmatic code as part of a multidisciplinary agile team.
• Participate in design, development and code reviews.
• Take accountability for end-to-end production, testing, and shipping of code.

Our Offering:

• Purpose: You’ll be part of something bigger, working towards building a decentralized financial ecosystem.
• Culture: You’ll work in a thriving, friendly, and fun environment that promotes open discussions, jokes, learning, video games, and lots of fun.
• People: You’ll work with some of the most driven and intelligent people in the crypto space, engaging with a network of diverse talent team members & advisors.
• Flexible vacation policy: work with your manager to take time off when you need it