MERN Stack Engineer (Full Stack)

Job Title : Full Stack TypeScript Developer (Web3)

Location : Remote

Experience Level : 3+ Years

Role Overview :

Join our innovative, funded Web3 startup as a Full Stack TypeScript Developer and play a key role in building a wallet-to-wallet audio calling platform. You’ll collaborate with cross-functional teams to deliver a seamless user experience by integrating real-time communication, blockchain payments, and advanced analytics into our platform.

Key Responsibilities:

Development & Blockchain Integration :

• Design and develop a responsive React + TypeScript frontend using Vite.
• Build a scalable TypeScript, Express.js backend to manage wallets and on-chain transactions.
• Integrate wallet connection frameworks like RainbowKit and Wagmi.
• Implement blockchain payment systems using Superfluid Finance and on-chain revenue sharing with 0xSplits.

Real-Time Communication :

• Develop and optimize real-time audio streaming for calls and Spaces using Jitsi or 100ms.
• Ensure low-latency performance, scalability, and smooth user interactions for high-concurrency scenarios.

Data Management & Analytics :

• Manage relational data with Drizzle ORM and Neon Postgres.
• Develop analytics features using The Graph or custom indexers to query blockchain data effectively.

Collaboration & Documentation :

• Collaborate closely with product, design, and blockchain teams to align on technical solutions and goals.
• Document APIs, workflows, and architectural decisions to ensure clarity and smooth handoffs.

Required Skills:

• Strong proficiency in React, TypeScript, and Express.js.
• Hands-on experience with blockchain tools such as ethers.js, Superfluid, 0xSplits, and The Graph.
• Familiarity with real-time audio communication systems like Jitsi or 100ms.
• Expertise in relational databases like Postgres and scalable storage solutions.
• Excellent debugging, optimization, and problem-solving skills.

Preferred Qualifications:

• Prior experience in Web3 or blockchain-based applications.
• Knowledge of decentralized systems and protocols.
• Understanding of agile development processes and CI/CD pipelines.
• Strong attention to detail with the ability to write clean, maintainable code.

What We Offer:

• A chance to work at the forefront of Web3 innovation.
• Fully remote, flexible work environment.
• Competitive salary and equity options.
• Opportunity to make a significant impact in a growing startup.

Position Title: Lead Software Engineer

Level: Mid - Senior L5

Years: 6-8 Yrs

Job Location: Delhi/NCR (Hybrid)

Position: 1

About Omni.US

Omni is the ultimate B2B outreach platform backed by the decade-long expertise of co-founders in cold outreach and scaling SaaS companies. We've obsessively focused on cold outreach and built a powerful tool perfect for Enterprise and SMB companies to get clients.  Our team has deep experience building and scaling B2B SaaS companies to millions in ARR. We understand what it takes to create a successful product, so we're excited about Omni.  

Meet your Team Members

Alex Berman, Co-Founder

Navjyotsingh Rajput, Co-Founder

Madhuri Pandit, Product Owner

About the Role

As a Lead Engineer, you will need to produce and implement functional software solutions. You will work with a senior engineer to define software requirements and take the lead on operational and technical projects. In this role, you should be able to work with minimal supervision.  Your goal will be to develop high-quality software that is aligned with customer needs and business goals.

Responsibilities

• You will need to ensure that software deliverables comply with quality standards and are completed on time.
• Experience or proactive working in mission-critical 24*7 systems.
• Review the performance of the operating system used in the Company and upgrade it as and when required. 
• Conducts peer code reviews and design reviews. 
• Should have knowledge and experience working with SAAS-based applications in early or mid-stage startups. 
• Undertaking engineering tasks that are complex in nature and also working on big modules and defining the architectural layouts, both on the Application, API, and Database levels. 
• Demonstrates broad and deep expertise in multiple computer languages and frameworks (e.g., open-source).
• Designs, Develop and approve end-to-end functionality of a product line, platform, or infrastructure.
• 3+ Years of experience as Technical Lead. 
• 6+ years of software development experience with at least one full-cycle implementation.
• Strong exposure working on projects related to MERN stack. Maintains deep technical knowledge within areas of expertise
• Experience in building highly scalable distributed systems

Desired Experience

Technical Skills: 

• Programming and working with mobile or website systems & security principles. 
• Strong experience in Tech Stack - MERN (Node.JS, Express, React.JS, Mongodb) with GraphQl as preferred API. 
• Experience working in Product lifecycle management from requirement gatherings to user experience. 
• Strong experience in JS libraries. 
• Must have delivered at least 1 product (which should be available in the public domain for reference)

Soft Skills: 

• Creating end goals for their team.
• Experience in a delegation of responsibilities. 
• Can multitask and Should have experience managing/working with a team of 5- 10 resources.
• Offering support and guidance to the team when needed, able to provide clear instructions and set expectations.
• Prior experience working with Startups and Senior developers or Tech leads. 

Interview Process

• 1st Round - Technical 
• 2nd Round - Product Manager 
• 3rd Round - Manager 
• 3rd Round - HR Manager

Qualifications

• BE/BTech/MCA/ME/MTech-E&C/IT/CS or equivalent experience.

Responsibilities:

• Writing and reviewing great quality code.
• Understanding functional requirements thoroughly and analysing the client's needs in the context of the project.
• Envisioning the overall solution for defined functional and non-functional requirements, and being able to define technologies, patterns and frameworks to realize it.
• Determining and implementing design methodologies and tool sets.
• Enabling application development by coordinating requirements, schedules, and activities.
• Being able to lead/support UAT and production roll outs.
• Creating, understanding and validating WBS and estimated effort for given module/task, and being able to justify it.
• Addressing issues promptly, responding positively to setbacks and challenges with a mindset of continuous improvement.
• Giving constructive feedback to the team members and setting clear expectations.
• Helping the team in troubleshooting and resolving of complex bugs.
• Coming up with solutions to any issue that is raised during code/design review and being able to justify the decision taken.
• Carrying out POCs to make sure that suggested design/technologies meet the requirements.
• Passionate about building great solutions.
• Mentoring the team members to meet the client's needs and holding them accountable for high standards of delivery.
• Being able to understand and relate technology integration scenarios and be able to apply these learnings in complex troubleshooting scenarios.

• Relevant expertise in C#, . Net framework/. Net core, Web Services/WCF/Web API, ASP. Net/MVC. JavaScript, OO JavaScript (ES6 onwards), HTML5/CSS, Angular/React/VueJS, OOA and OOD Concepts, Serverside JS: NodeJS/Express.
• Experience in Relational Database: SQL Server/MySQL/Oracle, Cloud Platform: Amazon/Azure/Google Cloud.
• Experience in Testing Frameworks (Web): MSTest/NUnit/Jasmine/Karma/Mocha, Repositories: Git/SVN/TFS, CI/CD Tools: Jenkins/Grunt/Gitlab/Azure DevOps, Container Ecosystem: Docker/Kubernetes/Anthos.
• NoSQL DB: MongoDB/Cassandra/CouchDB/HBase/MarkLogic, Cloud Database: CosmosDB/ IBM DB2/SAP HANA/Amazon Aurora/DynamoDB.
• Knowledge of high-quality professional software engineering practices for agile software development cycle, including coding standards, code reviews, source control management, build processes, testing, and deployment.
• Fundamental knowledge of design patterns.
• Experience in communicating effectively with users, other technical teams, and management to collect requirements, describe software product features, and technical designs.
• Languages: C#, JavaScript, OO JavaScript (ES6 onwards).
• App Framework: . Net Framework/. Net Core.
• Web Framework: ASP. Net/MVC.
• Markups: HTML5/CSS.
• CSS Framework: Bootstrap/Foundation/Bulma.
• Frontend Framework: Angular 6 ( ) /React/VueJS.
• API Framework: WebServices/WCF/WebAPI.
• Relational Database: SQL Server/MySQL/Oracle.
• Cloud Platform: Amazon/Azure/Google Cloud.
• Testing Frameworks (Web): MSTest/NUnit/Jasmine/Karma/Mocha.
• Repositories: Git/SVN/TFS.

• +2 years experience working as a react.js developer.
• In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
• Knowledge of REACT tools including React.js, Redux, Material UI.
• Experience with user interface design & user experience design
• Knowledge of performance testing frameworks including Mocha and Jest.
• Experience with browser-based debugging and performance testing software.
• Excellent troubleshooting skills.
• Good project management skills.
• Developing applications in React including component design and state management for specific use cases
• Experience working with at least one SQL and NoSQL Database (MongoDB, SQL Server, Snowflake, Postgres preferred)
• Basic experience with AWS platform

You will be responsible for architecting and developing features on the application end to end. You will work closely with the Product Managers and the Technical architect to develop high-quality, resilient, and highly performant applications.

• Design and develop SaaS-based applications based on microservices architecture.
• Work on the core backend and ensure it meets the performance benchmarks.
• Work on the front end with ReactJS.
• Designing and developing APIs for the front end to consume.
• Constantly improve the architecture of the application by clearing the technical backlog.
• Meeting both technical and consumer needs.
• Staying abreast of developments in web applications and programming languages.

An enthusiastic individual with the following skills. Please do not hesitate to apply if you do not match all of them. We are open to promising candidates who are passionate about their work and are team players.

• Education - BE/MCA or equivalent.
• Overall 4+ years of experience.
• Agnostic/Polyglot with multiple tech stacks.
• Worked on open source technologies – NodeJS, ReactJS, MySQL, NoSQL, MongoDB, DynamoDB.
• Good experience with Front-end technologies like JavaScript frameworks, ReactJS, and AngularJS.
• Backend exposure – good knowledge of building API.
• Worked on serverless technologies.
• Efficient in building microservices in combining server & front-end.
• Knowledge of cloud architecture.
• Should have sound working experience with relational and columnar DB.
• Should be innovative and communicative in approach.
• Will be responsible for functional/technical track of a project.

‍

You will closely work with the engineering team and support the Product Team of Plum.

A wholesome opportunity in a fast-paced environment that will enable you to juggle between concepts, yet maintain the quality of content, interact, and share your ideas and have loads of learning while at work. Work with a team of highly talented young professionals and enjoy the benefits of being at this company

It  is a rapidly growing fintech SaaS firm that propels business growth while focusing on human motivation. Backed by Giift and Apis Partners Growth Fund II, Company offers a suite of three products - Plum, Empuls, and Compass. works with more than 2000 clients across 10+ countries and over 2.5 million users. Headquartered in Bengaluru, It  is a 300+ strong team with four global offices in San Francisco, Dublin, Singapore, New Delhi.

We look forward to connecting with you. As you may take time to review this opportunity, we will wait for a reasonable time of around 3-5 days before we screen the collected applications and start lining up job discussions with the hiring manager. We however assure you that we will attempt to maintain a reasonable time window for successfully closing this requirement. The candidates will be kept informed and updated on the feedback and application status.

• Previous working experience as a MERN/MEAN  Stack Developer for 1 year (Minimum).
• In depth knowledge of NodeJS, ExpressJS or Restify
• Experience implementing applications using Angular 2+ versions or React
• Experience creating front end applications using HTML5, Angular/React, LESS/SASS
• Hands on experience with JavaScript
• Development on both client and server-side
• Experience on Angular 2+  and React Js will be an plus point
• Experience on both MEAN/MERN Technologies will be an advantage.

SellerGeni is an early-stage VC Funded SAAS Product in the Ecommerce Growth space. Our products GrowZ and SmartPlug enable sellers on Amazon to grow their sales and improve the quality of their listings through automated tools. Our vision is to simplify Growth across all ecommerce channels. We make traffic generation as simple as launching a Shopify website. You will be working closely with key stakeholders across the organization and leading a team of motivated engineers and professionals trying to change the status quo in online business growth. Join us if you love solving real-world problems with technically robust solutions.

Open to SDE-2, SDE-3, FSE & SWE.

What you will be doing

• Write test-driven code for Client and Server side application
• Creating functional codes that implement product requirements
• Participating in the design and creation of scalable software
• Testing and fixing bugs and/or other coding issues
• Take ownership of code, tasks and system architecture
• Brainstorming to scale the system for millions of users
• Mentoring juniors and champion the Agile Development Practices

What you need to have

• Knowledge of Javascript back-end languages & frameworks (e.g NodeJS, ExpressJS, GraphQL, TypeScript etc)
• Knowledge of Javascript front-end frameworks (e.g.NextJS, ReactJS, Angular etc)
• Experience in SQL/NoSQL databases (e.g. MongoDB, MySQL, DynamoDB, etc)
• Experience in building and maintaining large-scale production (e.g Redis, Jobs, Queue, Async sockets, etc)
• Knowledge of modern javascript libraries (e.g JWT, Webpack, Browserify, jQuery, Bootstrap, Semantic etc)
• Decent understanding of networking technologies (e.g TCP, HTTP, websockets, server-sent events, etc)
• Excellent communication and teamwork skills
• Good understanding of System design, architecture and Web Security
• Knowledge of version control software like Git, Github, BitBucket

Nice to have

• GSoC (or) Open Source contributions
• Prior startup (or) SAAS product experience
• Experience with building B2B products
• Amazon SP-API, MWS and advertising API
• Consumer Web Development Experience for High-Traffic, queue based applications
• Software security and SDLC
• UI/UX Product design & decision
• Experience in development workflow integrations (e.g CI/CD, Docker, Kube, pods, etc)
• Experience in building REST APIs, server-side architecture
• Decent understanding of Cloud & DevSecOps (e.g ECS ELB, SSM, SQS, Lambda, Kafka etc)

Benefits

• Competitive Salary & Equity
• MacBook Pro
• Flexible Work Timings
• Work With Experienced Team (Ex Amazon, Paytm, Oracle & GSoCers)

Total Experience : 2-6 years Relevant Experience: 2-3+ years