Fullstack Engineer

Job Description: Full Stack Engineer (SDE-2)

Experience: 7-9 Years

Location: Perungudi, Chennai

Timing: 1PM to 10PM IST

Type: Full-Time

Sub-Disciplines & Target Specializations

I. Core Tech Stack

a. Frontend: React, TypeScript, JavaScript (ES6+), SPAs.

b. Backend: C# / .NET Core, Python, REST APIs, Dependency Injection, Async Programming.

II. Database: PostgreSQL (multi-tenant schema isolation, joins, transactions).

III. Key Responsibilities

I. Full-Stack Ownership: End-to-end feature development across UI, API, database, and async workflows for healthcare web apps.

II. Architectural & Security: Maintain single API contracts (auth, pagination, errors), secure tenant data boundaries, and handle payment checkout/webhooks safely.

III. Performance & Observability: Profile/tune hot paths (N+1 queries, latency), set up structured logging/tracing, and manage SLIs/SLOs.

IV. Modern SDLC: Spec-driven development using AI coding assistants (with full ownership of code security and correctness).

IV. DevOps & Infrastructure

a. CI/CD pipelines, containerization (Docker), and cloud infrastructure (AWS).

V. Competency Focus

a. High emphasis on practical problem-solving, C# and React coding, High-Level & Low-Level Design (SaaS architecture, LLD patterns, N+1 fixes), and applied data structures/query optimization.

Position Overview

We are looking for a skilled Full Stack Engineer with 8 to 11 years of experience to join our core engineering team. In this role, you will own features end to end from responsive user interfaces through APIs, data, and background processing for high-availability web applications used by healthcare practices. You will collaborate closely with product and design to ship modular, accessible, and reliable experiences across the stack. We want someone who is strong in React / TypeScript and C# / .NET, comfortable in a multi-tenant SaaS environment, and keen on spec-driven development and AI-augmented SDLC practices to raise quality and delivery speed.

Key Responsibilities

• Feature development: Design and ship end-to-end features in React, TypeScript, and ASP.NET Core UI, API contracts, persistence, and async workflows.

• Architecture & contracts: Keep frontend and backend aligned on a single contract (auth, pagination, error handling). Contribute to evolving a large existing codebase without breaking public APIs or tenant boundaries.

• Payments & integrations: Build checkout and saved-card experiences using hosted payment fields (card data never touches our servers), and implement idempotent server-side handling of provider webhooks and retries.

• Security & tenancy: Enforce authentication/authorization on both the SPA and the API. Scope data by tenant in the URL and in queries;

• Observability: Instrument client and server with structured logs, metrics, and distributed traces. Define SLIs/SLOs (latency, error rate, saturation), use dashboards and alerts to find regressions, and drive issues to root cause rather than restart-and-hope.

• Performance & scaling: Profile and tune hot paths query plans, N+1 access, payload size, bundle/cache strategy, p95/p99 API and page latency. Plan for horizontal scale (stateless APIs, connection pooling, queue-backed work, pagination) and load/capacity characteristics of multi-tenant traffic.

• Quality: Write automated tests on both stacks and participate in code review with focused, maintainable diffs.

• AI-augmented workflows: Work spec-first (requirements and design before implementation). Use AI coding assistants to draft, then own correctness, security, and production behaviour.

Required Skills & Qualifications

• Experience: 8+ years building production web products, with recent, substantial time in both a React frontend and a typed backend.
• Frontend: Deep expertise in React, TypeScript, and JavaScript (ES6+); comfortable with authenticated SPAs, forms, routing, and responsive layouts.
• Backend: Strong C# / .NET (or equivalent, with ability to ramp quickly): REST APIs, async programming, and dependency injection.
• Data: Hands-on PostgreSQL (or equivalent) at the query level joins, transactions, and safe concurrent writes.
• Full-stack ownership: You regularly ship features across UI, API, and data
• Tooling: Proficient with Git, CI/CD, and writing clean, reviewable code on both sides of the stack.
• Problem solving: Strong debugging across browser, API, and database; experience with multi-tenant or high-sensitivity data (access control, least privilege, no secrets in source).
• Cloud & Infrastructure: Familiarity with containerization (Docker), cloud infrastructure (AWS or equivalent), and CI/CD pipelines.

Nice to Have

• Domain exposure to healthcare or revenue cycle (patient billing, insurance claims, or similar regulated workflows).
• Experience with payment processors, Realtime client updates, or message-based background workers.
• interest in AI-integrated developer tools (spec-driven workflows, LLM-assisted coding) used with tests — not instead of them.