Senior MERN Stack Developer

LendFlow is an AI-powered home loan assessment platform that helps mortgage brokers and lenders save hours by automating document analysis, income validation, and serviceability assessment. We turn complex financial documents into clear insights—fast.

We’re building a smart assistant that ingests client docs (bank statements, payslips, loan summaries) and uses modular AI agents to extract, classify, and summarize financial data in minutes, not hours. Think OCR + AI agents + compliance-ready outputs.

🛠️ What You’ll Be Building

As part of our early technical team, you’ll help us develop and launch our MVP. Key modules include:

• Document ingestion and OCR processing (Textract, Document AI)
• AI agent workflows using LangChain or CrewAI
• Serviceability calculators with business rule engines
• React + Next.js frontend for brokers and analysts
• FastAPI backend with PostgreSQL
• Security, encryption, audit logging (privacy-first design)

🎯 We’re Looking For:

Must-Have Skills:

• Strong experience with Python (FastAPI, OCR, LLMs, prompt engineering)
• Familiarity with AI agent frameworks (LangChain, CrewAI, Autogen, or similar)
• Frontend skills in React.js / Next.js
• Experience with PostgreSQL and cloud storage (AWS/GCP)
• Understanding of financial documents and data privacy best practices

Bonus Points:

• Experience with OCR tools like Amazon Textract, Tesseract, or Document AI
• Building ML/NLP pipelines in real-world apps
• Prior work in fintech, lending, or proptech sectors

• Web Development: Creating and implementing the technical aspects of websites and web applications

• This involves working with programming languages such as HTML, CSS, and JavaScript to build the front-end (user interface) and back-end (server-side logic)

• Web Design: Collaborating with designers and using design tools to translate mockups and wireframes into functional web pages that align with the visual and user experience (UX) design

• Front-end Development: Focusing on the client-side of the application, ensuring responsive and interactive user interfaces, optimizing for various devices and screen sizes

• Back-end Development: Dealing with the server-side logic and databases to handle data storage, retrieval, and manipulation

• This may involve working with technologies like Node.js, Python, PHP, and more.

• Database Management: Creating and maintaining databases that store website/application data efficiently and securely

• Testing and Debugging: Identifying and fixing technical issues, ensuring the website or application functions smoothly across different browsers and devices

• Website Optimization: Improving website/application performance, load times, and overall user experience

• Version Control: Using version control systems (e g, Git) to manage code and collaborate with other developers

• Security: Implementing security measures to protect websites and applications from potential threats and vulnerabilities

• Collaboration: Working closely with designers, other developers, and stakeholders to ensure project requirements are met and deadlines are followed

• Continuous Learning: Keeping up with the latest web technologies, trends, and best practices to improve skills and stay current in the rapidly evolving web development landscape

• Deployment and Maintenance: Deploying websites/applications to servers and performing regular updates and maintenance to keep them running smoothly

• Troubleshooting: Investigating and resolving technical issues that arise from user feedback or testing

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Desired Candidate Profile

• Engineering graduate (BE/B.Tech) or BCA/MCA from a reputed university.

• Ability to develop and manage e-commerce websites and web applications.

• Good understanding of fundamentals and concepts of PHP Scripting language.

• Good understanding of Smarty language.

• Hands-on experience in front-end technologies such as JavaScript, HTML5, jQuery and CSS3.

• Knowledge of OOPS & Database.

• Strong written and oral communication skills.

• Attention to detail and excellent organizational skills.

• Alternate Saturday and all Sunday will be fixed off

About Us

Zentosys Solutions Pvt. Ltd. is a technology-driven IT services company specializing in modern web and mobile application development. We empower businesses worldwide with innovative, scalable, and efficient software solutions. Be a part of our dynamic team and contribute to building impactful digital products.

Responsibilities

• Develop, maintain, and optimize full-stack applications using modern technologies.
• Implement backend logic using Node.js, TypeScript, and frameworks like Express.js or NestJS.
• Build intuitive, responsive, and high-performance frontend applications using React.js, Next.js, or similar frameworks.
• Design and integrate RESTful APIs and ensure seamless communication between front-end and back-end systems.
• Utilize CI/CD pipelines for automated deployment and continuous integration.
• Manage and optimize cloud infrastructure using AWS services.
• Debug, troubleshoot, and ensure application reliability and performance across the stack.
• Design database schemas and manage MongoDB for efficient data handling.
• Collaborate with cross-functional teams, including DevOps, designers, and product managers, to deliver high-quality solutions.
• Stay updated with the latest technologies, frameworks, and best practices in software development.

Requirements

• Experience: 2+ years in full-stack development.
• Strong expertise in Node.js, TypeScript, and backend frameworks like Express.js, NestJS, or Fastify.
• Proficiency in frontend technologies like React.js, Next.js, HTML5, CSS3, and JavaScript (ES6+).
• Hands-on experience with CI/CD pipelines and tools such as Jenkins, GitHub Actions, GitLab CI, or similar.
• Practical knowledge of AWS services, including EC2, S3, RDS, Lambda, and IAM.
• Experience with database schema design and management using MongoDB.
• Strong problem-solving skills with a logical and analytical approach to challenges.
• Familiarity with Git for version control and collaboration in a team environment.
• Excellent communication and teamwork skills to contribute effectively in a collaborative setting.

Preferred Skills

• Exposure to GraphQL for API development.
• Knowledge of Docker and container orchestration.
• Familiarity with Serverless Framework for deploying cloud-native applications.
• Experience with testing frameworks like Jest, Mocha, or Cypress.
• Understanding of state management libraries like Redux, Zustand, or similar.
• Hands-on experience with Terraform or other infrastructure-as-code tools.

What We Value

• Problem Solvers: Professionals who can tackle challenges with creativity and precision.
• Team Players: Individuals who thrive in a collaborative, dynamic environment.
• Growth Mindset: Developers who are eager to learn, adapt, and grow with the organization.

What We Offer

• Competitive salary in the range of ₹6 LPA to ₹15 LPA based on skills and experience.
• Work on diverse and impactful projects for a global clientele.
• A culture that encourages innovation, professional growth, and skill enhancement.
• Flexible working hours and a healthy work-life balance.
• Exposure to cutting-edge technologies and tools.

Job Type: Full-time

Pay: ₹600,000.00 - ₹1,500,000.00 per year

Benefits:

• Provident Fund

Schedule:

• Monday to Friday

Education:

• Bachelor's (Required)

Experience:

• Full-stack development: 2 years (Required)

Work Location: In person

Expected Start Date: 05/02/2025

We are dedicated to revolutionizing the tech industry through our advanced software solutions. We are in search of a talented and passionate Full Stack Developer (MERN STACK) with expertise in both frontend and backend technologies. This role is crucial for driving innovation and enhancing the performance of our web applications, ensuring an exceptional user experience.

I. Key Responsibilities:

A. Frontend Development:

1. Develop and maintain high-quality web applications using React.js and other frontend technologies.

2. Create responsive, user-friendly interfaces adhering to UI/UX design principles.

3. Optimize web applications for maximum speed and scalability.

B. Backend Development:

1. Develop and maintain efficient, reusable, and reliable code using Node.js, Express.js, or other backend frameworks.

2. Implement effective RESTful APIs and server-side rendering techniques.

3. Collaborate with the team to design and implement database schemas, ensuring data integrity and security.

C. Collaboration and Communication:

1. Work closely with cross-functional teams, including UX/UI designers, backend developers, and product stakeholders.

2. Participate in code reviews and provide constructive feedback to peers.

3. Communicate effectively with team members and clients to manage expectations and coordinate tasks.

II. Skills and Qualifications:

A. Frontend Technologies:

1. Proficiency in HTML5, CSS, JavaScript ES6, React.js, and Bootstrap.

2. Familiarity with state management libraries (e.g., Redux) and frontend development tools (Babel, Webpack, NPM).

B. Backend Technologies:

1. Proficiency in Node.js, Express.js, Django, Flask, or other backend frameworks.

2. Experience with databases and ORM frameworks (SQL, NoSQL, Sequelize, SQLAlchemy, etc.).

C. Development Practices:

1. Solid understanding of the full web development life cycle and RESTful API design.

2. Experience with testing frameworks (Jest, Mocha, etc.) and version control systems (GitLab, GitHub).

3. Familiarity with continuous integration/continuous deployment pipelines (e.g., Jenkins, Strider) and containerization (Docker, Kubernetes).

D. General Skills:

• Total experience should be 10 yrs with minimum experience as full stack developer 5 plus years
• Effective team player with strong problem-solving skills.
• Excellent verbal and written communication skills.
• Bachelor’s degree in Computer Science, Engineering, or a related field.

Title

Full Stack MERN/ MEAN Tech Lead

Location

Bangalore

About the company

With over a decade of experience, we specialize in crafting bespoke integration solutions and empowering businesses across the globe with a combined approach to emerging technology. We use cutting edge enterprise platforms - Microsoft, Salesforce, SAP and more Since our establishment in 2004, with our headquarters located in Tampa, USA, eCosmos has been extending global reach and domestic support to a diverse range of organizations, from start-ups to Fortune 500 companies

. Job Summary:

The Lead Developer provides technical expertise which requires a working knowledge of the technical infrastructure underpinning the applications. Plans, consults, and coordinates complex project assignments in the design, development and implementation of applications software. Works as part of a service or project team to implement complex technical solutions that meet business requirements. Responsible for contributing to the planning of the work programs and the review, development, and modification of best practices and technical solutions. Provides supervision to a team of Developers

. What success looks like in this role:

• You will lead a team of 5-10 developers building web apps with React, Node.js, Express and MongoDB, and mobile apps with React Native.

• Architect scalable and high-performance web and mobile apps using proven JavaScript stacks like MERN and MEAN

• Establish best practices for web and mobile development, code quality, testing, and CI/CD

• Proficiency in TypeScript is required to develop and maintain the front-end and back-end of our web applications.

• Plan sprints, assign tasks, and oversee code reviews, testing, and releases

• Troubleshoot and debug applications across the stack

• Manage technical debt and spearhead migrations to new libraries/frameworks when needed

• Hire and mentor developers and promote an engineering culture of learning and excellence.

Skills Required:

• Excellent communication skills, both written and oral.

• Quick problem-solving skills with exceptional aptitude and reasoning. • Good orator, presenter with influencing skills to manage and negotiate complex conflicting resolutions.

• Ability to frame ideas in words to provide a perspective and outcome from analyzing them.

• Experience in leading, managing, mentoring a team of junior developers.

You will be successful in this role if you have:

: • Bachelor's in engineering (B.E or BTech.), MCA.

• 5+ years' experience leading web and/or mobile engineering teams

• Deep expertise with JavaScript, Node.js, React, React Native, and MongoDB • Experience building web apps with MERN or similar stacks • Experience building mobile apps with React Native or similar frameworks

• Excellent verbal and written communication skills

• Comfortable with Agile methodologies like Scrum and Kanban

• Strong leadership skills and commitment to building a world-class engineering team

Compensation & Benefits:

For the right candidate, e-Cosmos is ready to provide an extremely competitive salary and added incentive bonus potential

. e-Cosmos provides an attractive and complete benefits package:

✓ Accidental Death & Dismemberment Insurance

✓ Training and certification assistance

✓ Employee referral bonus program

✓ Vertical and Lateral increments

ETHICS COMPLIANCE:

: e-Cosmos is firmly committed to conducting business in compliance with the letter and spirit of the law and other accepted standards of business conduct as reflected in the company's policies.

• Front-end skills (HTML5, CSS3, JavaScript, ES6+, Ajax);
• 3+ years working with React/Redux + Typescript front-end applications
• Must have experience technologies like Python, React, node.js, PostgreSQL, AWS
• Experience with centrally managed state (Redux) and React Router
• Experience with data structuring libraries (Immutable.js / Immer)
• Experience of TDD/BDD, QA/Test frameworks such as Selenium, load testing (Blazemeter), unit testing (Mocha/Chai/Jest) etc.
• Experience optimising the performance of front-end applications
• A good understanding of agile development practices and common methodologies
• Experience building responsive, cross browser compatibility websites and applications
• Experience of integrating with web services and APIs, including REST endpoints.
• Experience using code version control systems (GIT) and CI/CD.

Qualifications for Ruby

Time Zone EST Overlap of 3-4 hours/day

• Proficient in Ruby, and one of the Javascript UI frameworks like React, Ember, Angular, etc.
• Experience working with MySQL, BigQuery, and Snowflake.
• Experience in UI frameworks like React, Ember, Angular, etc.
• Experience building and deploying applications in an Amazon Web Services (AWS) ecosystem. 
• 5+ years of software engineering experience developing scalable production software incorporating testing, evaluation, and monitoring.
• Full-stack development experience
• Strong knowledge of CS fundamentals and code organization best practices
• Bachelor's degree in Computer Science or equivalent practical experience.
• Built systems that make use of complex job queues and offline processing
• Experience with Docker/ECS/AWS
• Experience with testing and writing test cases
• Experience with Jest, Enzyme, and RSpec