Mern Stack Developer

Role: MERN Developer

Experience: 4-6 Years

Location: Andheri, Mumbai

Immediate Joiners Only

Highlights of Requirement

Databases: MongoDB (Expert Level), PostgreSQL

Queue Systems: Kafka

Job Scheduler: Bull

Infrastructure: Docker, Kubernetes (K8s)

Additional Requirements:

Experience working with large datasets

Expertise in logging, tracing, and application monitoring

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 an 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 a plus.

Role Summary

We are seeking a Full-Stack Developer to build and secure features for our Therapy Planning Software (TPS), which integrates with RMS/RIS, EMR systems, devices (DICOM, Bluetooth, VR, robotics, FES), and supports ICD–ICF–ICHI coding. The role involves ~40% frontend and 60% backend development, with end-to-end responsibility for security across application layers.

Responsibilities

Frontend (40%)

1. Build responsive, accessible UI in React + TypeScript (or Angular/Vue).
2. Implement multilingual (i18n/l10n) and WCAG 2.1 accessibility standards.
3. Develop offline-capable PWAs for home programs.
4. Integrate REST/FHIR APIs for patient workflows, scheduling, and reporting.
5. Support features like voice-to-text, video capture, and compression.

Backend (60%)

1. Design and scale REST APIs using Python (FastAPI/Django).
2. Build modules for EMR storage, assessments, therapy plans, and data logging.
3. Implement HL7/FHIR endpoints and secure integrations with external EMRs.
4. Handle file uploads (virus scanning, HD video compression, secure storage).
5. Optimize PostgreSQL schemas and queries for performance.
6. Implement RBAC, MFA, PDPA compliance, edit locks, and audit trails.

Security Layer (Ownership)

1. Identity & Access: OAuth2/OIDC, JWT, MFA, SSO.
2. Data Protection: TLS, AES-256 at rest, field-level encryption, immutable audit logs.
3. Compliance: PDPA, HIPAA principles, MDA requirements.
4. DevSecOps: Secure coding (OWASP ASVS), dependency scanning, secrets management.
5. Monitoring: Logging/metrics (ELK/Prometheus), anomaly detection, DR/BCP preparedness.

Requirements

• Strong skills in Python (FastAPI/Django) and React + TypeScript.
• Experience with HL7/FHIR, EMR data, and REST APIs.
• Knowledge of OAuth2/JWT authentication, RBAC, audit logging.
• Proficiency with PostgreSQL and database optimization.
• Cloud deployment (AWS/Azure) and containerization (Docker/K8s) a plus.

Added Advantage

• Familiarity with ICD, ICF, ICHI coding systems or medical diagnosis workflows.

Success Metrics

• Deliver secure end-to-end features with clinical workflow integration.
• Pass OWASP/ASVS L2 security baseline.
• Establish full audit trail and role-based access across at least one clinical workflow.

Job Purpose

We are looking for an energetic and self-starter software developer to join our product development practice as a Senior Software Engineer (SSE).

You will get to work with some of the best and knowledgeable tech talent in the financial world and you will build next generation digital services and platforms that will lead the transformation goals for our customers. You will work closely with the engineering, UX, product and test automation communities, as part of the agile team, to lead product design and development and to help the Digital Service Product Owner to deliver and maximize value.

You will drive engineering and architecture best practices for writing and encouraging others to write secure code and dev-ops process while getting opportunities for learning new business domain and topics, to work with industry SMEs and to learn new technology and behavioral skills.

Key Responsibilities

As a Full-stack Developer

• 8+ year’s professional experience in enterprise software design and development in an N-tier architecture environment;
• Understanding of 12-factor app framework is highly desirable
• Must have experience building web applications using .NET core 3.x (.NET 5.0 is better), Web API, HTML5, React OR other JS-based frameworks like Angular
• Must have experience with tools such as Jira, Github, Confluence (or other wiki), SonarQube (or similar), OWASP ZAP (or similar) and Snyk (or similar)
• Experience with data visualization libraries /framework like D3js, Plotly, HighCharts etc. will be an advantage
• Must have experience with SOA and Web Service standards (REST & JSON/SOAP & WSDL/WS-I Basic Profile), and IIS
• Understand the business requirements from the product owner(s)
• Design and implement the system from scratch & build enhancements, features request using modern application frameworks using C# and React with .NET Core, Web API, AWS services etc.
• Participate in both development & maintenance tasks
• Independently troubleshoot difficult and complex issues on production and other environments

As a Technical Lead in the pod

• Must have experience of working in an automated CI/CD environment and with fast moving teams using Scrum/Agile; Experience with AWS and other cloud providers is highly desirable
• Must have extensive experience with object oriented design principles. Ability to articulate the pros and cons of design/implementation options
• Participate in design review and peer code review
• Work collaboratively in a global setting, should be eager to learn new technologies
• Responsible for extending and maintaining existing codebase with focus on quality, re-usability, maintainability and consistency
• Coach teams on best practices and architecture design

As member of the Engineering community

• Must have extensive experience with object oriented design principles.
• Ability to articulate the pros and cons of design/implementation options
• Good understanding and knowledge of areas including but not limited to requirement gathering, designing, development, testing, maintenance, quality control etc.
• Stay up-to-date on latest developments in technology
• Learn and share learnings with the community

Behavioral Competencies

• A self-starter, excellent planner and executor and above all, a good team player
• Excellent communication skills and inter-personal skills are a must
• Must have organizational skills, including multi-task capability, priority setting and meeting deadlines
• Ability to build collaborative relationships and effectively leverage networks to mobilize resources
• Liking and initiative to learn business domain is highly desirable
• Likes dynamic and constantly evolving environment and requirements

Description

Zycus is looking for a Meanstack/Mernstack Developer, who is motivated to combine the art of design with the art of programming. Responsibilities include implementing visual elements and their behavior with user interactions.. You will also be playing an active role on front end as well as backend development, and defining how the application looks and functions. We are looking for candidates with strong experience in MongoDB, Express.js, Angular, Node.js, Javascript, HTML, CSS, Jquery, Ajax. If you are a Mean Stack or full stack developer with a strong technical experience, then you could be the best fit for the role!

Roles & Responsibilities

· Creating Apps by working on all layers of architecture Understanding the flow of code and how it interacts with different components.

· Creating technical design documents by understanding requirements, and product objectives.

· Writing effective Unit tests

· Good analytical skills and innovative mind.

· Source code management.

· Excellent communication skills.

Requirements

· Total experience of 5 - 8 years

· Experience on Mean Stack/Mernstack (MongoDB, Express.js, Angular, Node.js)

· Strong understanding of JavaScript, object-oriented JS, its quirks, and workarounds·

· Strong hands on experience in JavaScript· Strong proficiency with JavaScript or CoffeeScript depending on your technology stack.·

· Good understanding of server-side CSS preprocessors such as Stylus, Less·

· Basic understanding of web markup, including HTML5 and CSS3· Good understanding of asynchronous request handling, partial page updates, JQuery, and AJAX·

· Proficient understanding of cross-browser compatibility issues and ways to work around such issues· Familiarity with JavaScript module loaders, such as Require.js and AMD·

· Proficient understanding of code versioning tools, such as SVN· Good understanding of browser rendering behaviour and performance

· Key Programming Skills: MEAN stack, full stack, Angular, Java, HTML/CSS, Javascript, Bootstrap.

· Experience working with Rest based APIs

Five Reasons Why You Should Join Zycus

1. Cloud Product Company: We are a Cloud SaaS Company and our products are created by using the latest technologies like ML and AI. Our UI is in Angular JS and we are developing our mobile apps using React.

2. A Market Leader: Zycus is recognized by Gartner (world’s leading market research analyst) as a Leader in Procurement Software Suites.

3. Move between Roles: We believe that change leads to growth and therefore we allow our employees to shift careers and move to different roles and functions within the organization

4. Get a Global Exposure: You get to work and deal with our global customers.

5. Create an Impact: Zycus gives you the environment to create an impact on the product and transform your ideas into reality. Even our junior engineers get the opportunity to work on different product features.

• Design and implementation of the overall web architecture
• Pixel-perfect implementation and integration of our approved user interface
• Design and construction of REST API
• Build efficient, testable, and reusable PHP modules
• Design and deployment of database
• Integration of data storage solutions including various databases, blob stores, key-value pairs, etc.
• Solve complex performance problems and architectural challenges
• Ensuring the entire stack is designed and built for speed and scalability
• Design and implementation of continuous integration and deployment
• Handle overall website deployment and build process
• Work closely with different stakeholders to both develop detailed specification documents with clear project deliverables and timelines, and to ensure timely completion of deliverables.

• 3-5 years of experience in web development and coding within a cross-disciplinary environment
• Good at writing HTML, CSS,Bootstrap and JavaScript. Being up on the latest practices is a must, e.g., HTML5, CSS3, and ECMAScript 6 (minimum)
• Good experience in JQuery, JavaScript
• Must have exp. on PHP, MYSQL, MVC, Linux, logging, Unit testing, Subversion, Restful/soap
• Experience with Source Control tools (Subversion
• Expert in back-end programming language PHP with Laravel framework and IDE
• Good experience in JQuery, JavaScript.
• ReactJS, AngularJS or VueJS would be preferred
• Experience with Source Control tools (Subversion)
• Ideally, familiarity with CSS preprocessors, bundlers, and associated languages/ syntaxes/ libraries
• Database design and management with No-SQL, Mysql, including being up on the latest practices and associated version
• Familiarity with databases (e.g. MySQL, MongoDB), web servers (e.g. Apache) and UI/UX design
• Excellent communication and teamwork skills
• Familiarity with a relevant and globally supported framework both front-end and back-end
• Thorough understanding of user experience and possibly even product strategy
• Experience implementing testing platforms and unit tests
• Proficiency with version control system preferred Git
• Appreciation for clean and well-documented code
• Experienced in full web development life cycle from requirements gathering to Server management and deployment for the relevant environment
• WordPress Experience is a plus.
• Understanding of SEO principles.

What we're looking for

An experienced Software Engineer with a love for Web products, with demonstrated ability to contribute individually as well as in a team. If you love spending time on Hackernews/Github and love experimenting with latest technologies, this might be the role for you.

Responsibilities

• Own the development of product features end-to-end including scoping, architecting, coding, testing, and rolling out features
• Work closely with PMs, designers, and other engineers to ideate solutions to user problems
• Become an expert in your product area and our tech stack
• Make improvements to developer productivity through process / code improvements and mentorship

• 3+ years of experience designing and building complex JavaScript web based software systems
• Demonstrable Full Stack development experience with Angular or React and Node.JS in Typescript.
• Knowledge of multiple modern computer languages and frameworks with an understanding of using the right technology for the right purpose
• Experience with remote development teams working on the same platform
• Experience with writing testable code and driven by best practices Agile development process knowledge/experience
• Bachelor’s degree in Computer Science or related field

• Work with development teams and product managers to ideate software solutions
• Design client-side and server-side architecture
• Build the front-end of applications through appealing visual design
• Develop and manage well-functioning databases and applications
• Write effective APIs
• Test software to ensure responsiveness and efficiency
• Troubleshoot, debug and upgrade software
• Create security and data protection settings
• Build features and applications with a mobile responsive design
• Write technical documentation
• Work with data scientists and analysts to improve software

• Proven experience as a Full Stack Developer or similar role
• Experience developing desktop and mobile applications
• Familiarity with common stacks
• Knowledge of multiple front-end languages and libraries (e.g. HTML/ CSS, JavaScript)
• Knowledge of multiple back-end languages (e.g. Javascript, PHP, WordPress) and JavaScript frameworks (e.g. Angular, React, Node.js)
• Familiarity with databases (e.g. MySQL, MongoDB), web servers (e.g. Apache)
• Excellent communication and teamwork skills
• Great attention to detail
• Organizational skills
• An analytical mind
• Degree in Computer Science, Statistics or relevant field