Sr. Blockchain Developer

Senior Full-Stack Engineer — Backend-Focused

Remote · Platform Engineering · Full-time · 4–5 years experience

About the Role

We're a healthcare technology company building a multi-tenant case-management platform that orchestrates

complex clinical, payment, and communication workflows. You'll build backend services that power the product

— a TypeScript GraphQL API on Node.js, backed by PostgreSQL/Prisma and deployed on Google Cloud,

integrating a broad ecosystem of third-party healthcare, payment, and communication providers.

This is a senior, high-ownership role on a remote-first team. You'll design systems, lead complex integrations,

mentor engineers, and influence our architecture as we scale.

What You'll Do

• Design, build, and operate backend features on our Node.js + TypeScript platform using Express + Apollo

GraphQL in a modular-monolith architecture.

• Model and evolve a large, multi-tenant data layer with Prisma 7 on PostgreSQL (including read replicas),

with attention to performance, indexing, and data integrity.

• Build and harden third-party integrations — payments (Stripe, NMI), communications (SendGrid, Twilio),

CRM (HubSpot), scheduling (Calendly), and healthcare systems (Dosespot, pharmacy/consult-provider

APIs).

• Design event-driven and asynchronous workflows using Google Cloud Pub/Sub, scheduled jobs (App

Engine Cron), and Cloud Functions — for payment retries, follow-ups, escalations, and batch processing.

• Implement secure authentication and RBAC (Firebase Admin, JWT, OTP flows, granular permissions) in a

multi-tenant, compliance-sensitive context.

• Work with GCP services — App Engine, Cloud Storage, BigQuery, Document AI, Secret Manager — and

contribute to CI/CD via GitHub Actions and Prisma migration pipelines.

• Make full-stack changes when needed — wiring up the Vue 3 / Apollo frontend to ship a feature completely.

• Write robust tests with Vitest + Supertest and Firebase emulators; ensure reliability, observability

(Winston/Cloud Logging), and safe rollouts.

• Mentor engineers, lead design discussions, and own systems end-to-end in production.

What We're Looking For

• 4–5 years of professional backend or full-stack engineering experience, with a track record on

medium-to-large-scale production systems.

• Strong Node.js + TypeScript expertise and solid API design skills (GraphQL strongly preferred; strong

REST background welcome).

• Deep relational database experience — schema design, query optimization, migrations — ideally with

Prisma/PostgreSQL or comparable ORMs.

• Experience building and maintaining complex third-party integrations and webhook-driven systems,

including payments.

• Familiarity with cloud infrastructure (GCP preferred; AWS/Azure transferable), async messaging/queues,

caching (Redis), and CI/CD.

• Solid grasp of authentication, authorization (RBAC), and security best practices.

• Enough frontend competence to contribute to a Vue/React + GraphQL client when a feature demands it.

• Demonstrated ability to own systems independently, take responsibility for reliability and on-call quality,

and reason about scale and trade-offs.

• Excellent written and verbal communication — essential for our remote, async culture.

• Leadership qualities: you mentor others, drive technical design, and raise engineering standards.

Nice to Have

• Experience with Pub/Sub, BigQuery, Document AI, or other GCP-native services.

• Background in healthcare, fintech, or regulated/compliance-sensitive domains (HIPAA awareness a plus).

• Experience with multi-tenant SaaS architecture and data isolation.

• Familiarity with AI/LLM integrations (Claude, OpenAI, vector DBs like Pinecone).

• Experience scaling systems with rate limiting, observability, and performance tuning.

Position - Full Stack Developer (MERN + Laravel/PHP)

Responsibilities:

• Front-End Development: Build responsive and modern interfaces using React.js, JavaScript (ES6+), HTML5, and CSS3.
• Back-End Development:
• Develop APIs and server-side logic with Node.js, Express.js, PHP, and Laravel.
• Database & API Work:
• Work with MySQL, MongoDB, and integrate RESTful APIs and third-party services.

Collaboration & Delivery: Contribute in an Agile/Scrum environment, using Git for version control and CI/CD pipelines for deployments.

Problem Solving: Debug, optimize, and ensure scalability and maintainability of applications.

Required Skills & Qualifications:

• Strong knowledge of React.js (hooks, lifecycle, state management).
• Proficiency in JavaScript (ES6+), HTML5, CSS3, and responsive design.Hands-on experience with Node.js + Express.js (middleware, error handling, authentication/authorization).Solid expertise in PHP & Laravel framework (routing, middleware, Eloquent ORM, Artisan CLI).Experience in API design, authentication (JWT, Laravel Sanctum), and integration.Familiarity with Git/GitHub and basic CI/CD tools.Strong problem-solving ability and teamwork in Agile projects.

Job Role: Senior Full Stack Developer

Location: Trichy

Job Type: Full Time

Experience Required: 5+ Years

Reporting to : Product Head

About Us:

At Zybisys Consulting Services LLP, we are a leading company in Cloud Managed Services and Cloud Computing. We believe in creating a vibrant and inclusive workplace where talented people can grow and succeed. We are looking for a dedicated leader who is passionate about supporting our team, developing talent, and enhancing our company culture.

Role Overview:

Are you a seasoned Full Stack Developer with a passion for crafting innovative solutions? We are looking for an experienced Senior Full Stack Developer to enhance our team and lead the development of innovative solutions.

Key Responsibilities:

• Develop and Maintain Applications: Design, develop, and maintain scalable and efficient full-stack applications using modern technologies.
• Database Design: Expertise in both relational and NoSQL databases, including schema design, query optimization, and data modeling.
• Collaborate with Teams: Work closely with front-end and back-end developers along with the Engineering team to integrate and optimize APIs and services.
• Implement Best Practices: Ensure high-quality code, adherence to best practices, and efficient use of technologies.
• Troubleshoot and Debug: Identify and resolve complex issues, providing solutions and improvements.
• Code Review and Quality Assurance: Skill in reviewing code, ensuring adherence to coding standards, and implementing best practices for software quality.
• Agile Methodologies: Experience with Agile frameworks (e.g., Scrum, Kanban) to facilitate iterative development and continuous improvement.
• Test-Driven Development (TDD): Knowledge of TDD practices, writing unit tests, and integrating automated testing (CI/CD) into the development workflow.
• Technical Documentation: Ability to write clear and concise technical documentation for codebases, APIs, and system architecture.

Technical Skills:

• Backend: Node.js, Express.js, Python, Golang, gRPC
• Frontend: React.js, Next.js, HTML, HTML5, CSS3, jQuery
• Database: MongoDB, MySQL, Redis, OpenSearch
• API : RESTful APIs, SOAP services, or GraphQL
• Tools & Technologies: Docker, Git, Kafka
• Design & Development: Figma, Linux
• Containers & container orchestration: Docker, Kubernetes
• Networking & OS Knowledge

What We Offer:

• Growth Opportunities: Expand your skills and career within a forward-thinking company.
• Collaborative Environment: Join a team that values innovation and teamwork.

If your ready to take on exciting challenges and work in a collaborative environment, wed love to hear from you!

Apply now to join our team as a Senior Full Stack Developer and make waves with your skills!

About Plum

We are making health insurance - simple, accessible and affordable. Hundreds of businesses of all sizes from startups to large corporates trust Plum for their employee's health protection.

Healthcare in India is seeing a phenomenal shift. Healthcare cost is seeing an inflation that is three times the general inflation. Treatments of diseases including Covid-19 can wipe out entire household savings. Majority of Indians won't be able to afford a health insurance on their own. As many as 600mn Indians would depend on employer-sponsored insurance.

Enter Plum. Plum is re-imagining the health insurance stack, and accelerating the penetration of health insurance in India to 100%. Plum has forged new underwriting and fraud detection algorithms to enable companies as small as 2 to benefit from a group insurance. The platform enables realtime insurance design & pricing to enable companies to buy insurance in 3-clicks. And offers employees a hassle-free claims experience through an integrated digital process.

Plum is backed by leading global investors including Tiger Global, Sequoia Capital, Tanglin Ventures and Incubate Fund (read more https://www.plumhq.com/blog/plum-series-a-funding">here)

About the role

Having found exceptional product/market fit, we’re in the midst of transitioning from 'start-up' to ‘scale-up’, and looking for a full stack engineer to help us scale Plum.

You will have a direct impact on the customer experience through the design and implementation of new features and functionalities in our product. You'll work as part of a small but rapidly growing high-energy team delivering incredible, creative improvements to our product. You'll be in charge of reviewing the implementation of applications following code standards and style guides.

• Spec, build, test, and deliver new features while improving the performance and quality of the product.
• Run test-harness to guarantee the structure, integrity, and design of the application.
• Solve complex CSS, HTML, and User Interface compatibility issues across browsers.
• Optimize JavaScript implementations to ensure that code remains performant.
• Implement front-end development workflows: build systems, dependency management, quality checkers (linting), etc.
• Push things over the line, ship awesome features, and delight customers.

• 4+ years of hands-on experience building web applications with Nodejs, React.
• Comfortable with Responsive Web Design and Development and weave out beautiful code in React.
• Strong product and design sensibilities and has an obsessive attention to detail.
• Write testable, maintainable code that's easy to understand.
• Understand complex problems and break them down into smaller tasks.
• Strong sense of ownership and integrity demonstrated through clear communication and collaboration.

Job Profile

A NodeJs developer will be required to deploy and maintain network applications. Manage the exchange of data between servers and users, develop back-end components, and connect applications with other web services. Will also act as a support front-end developer by integrating web-based applications in Angular. With good hand's on experience in Rational Database i.e. MySQL & PostgreSQL.

Desired Candidate Profile

• Minimum 3+ years experience on Node JS
• Mandatory experience of 2 years in Angular 2 & above
• Experience on Bootstrap or any other JS Framework
• Very good knowledge of rational databases MySQL & PostgreSQL
• Good Knowledge of MongoDB.
• Excellent on web technologies including HTML, CSS, JavaScript, AJAX jQuery
• Experience in common third-party APIs
• Strong debugging skills
• Strong analytical skills and problem-solving aptitude

Excellent English writing and speaking skills are a must

Annual CTC : INR. 5,00,000/- to INR. 10,00,000/-

• Architect, design and build complex, highly scalable, high performance enterprise applications
• Lead, mentor and work with a team of engineers to deliver on clients application expectations
• Work with clients engineering needs and deliver on requirements in a team environment
• Accelerate development velocity for all engineers and deliver continuous improvements to the teams process and codebase
• Build automation to prevent and/or remediate service problems from becoming production incidents

We are looking for a Node.js Developer responsible for managing the interchange of data between the server and the users. Your primary focus will be the development of all server-side logic, definition and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end. You will also be responsible for integrating the front-end elements built by your co-workers into the application. Therefore, a basic understanding of front-end technologies is an advantage as well.

Responsibilities

• Integration of user-facing elements developed by front-end developers with server side logic
• Writing reusable, testable, and efficient code
• Design and implementation of low-latency, high-availability, and performant applications
• Implementation of security and data protection
• Integration of data storage solutions by using mySQL database.

Skills And Qualifications

• Should have industry experience of at least 1 year.
• Strong proficiency with JavaScript and strong knowledge of Node.js and sails frameworks
• Understanding the nature of asynchronous programming and its quirks and workarounds
• Good understanding of server-side templating languages such as EJS
• Good understanding of front-end technologies, such as HTML5, and CSS3
• Understanding accessibility and security compliance 
• User authentication and authorization between multiple systems, servers, and environments
• Integration of multiple data sources and databases into one system
• Understanding fundamental design principles behind a scalable application
• Understanding differences between multiple delivery platforms, such as mobile vs. desktop, and optimizing output to match the specific platform
• Creating database schemas that represent and support business processes
• Implementing automated testing platforms and unit tests
• Proficient understanding of code versioning tools, such as Git