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Deservely Technologies Pvt Ltd

Full Stack Engineer (SDE-2)
Experience: 8–11 Years
Location: Chennai. Work Days: Monday to Friday Working Hours: 1:00 PM – 10:00 PM Employment Type: Full-Time
Position Overview
Digiclarity is looking for an experienced Full Stack Engineer (SDE-2) with 8–11 years of hands-on experience in building scalable, secure, and high-performance web applications. The ideal candidate should have strong expertise in React, TypeScript, JavaScript, C#/.NET Core, REST APIs, and PostgreSQL.
You will take end-to-end ownership of features, working across the frontend, backend, database, and asynchronous workflows. You will contribute to healthcare-focused, high-availability web applications while working closely with Product, Design, QA, and Engineering teams.
The role requires strong practical problem-solving skills, understanding of SaaS architecture, secure development practices, performance optimization, and modern software development methodologies.
Key Responsibilities
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Develop and deliver end-to-end features using React, TypeScript, JavaScript, C#/.NET Core, and PostgreSQL.
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Build responsive and accessible Single Page Applications (SPAs) with secure authentication, forms, routing, and reusable components.
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Design and maintain scalable REST APIs, including consistent authentication, pagination, validation, and error-handling contracts.
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Implement backend services using C#/.NET Core, Dependency Injection, and asynchronous programming.
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Work with PostgreSQL for complex joins, transactions, query optimization, and safe concurrent data operations.
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Build secure multi-tenant SaaS applications, ensuring proper tenant-level data isolation and access control.
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Develop secure payment integrations, including checkout flows and reliable webhook processing with idempotency and retry handling.
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Identify and resolve performance issues such as N+1 queries, slow database operations, large payloads, and API latency.
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Implement observability using structured logging, metrics, tracing, dashboards, and alerts to improve system reliability.
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Contribute to High-Level Design (HLD) and Low-Level Design (LLD), including scalable SaaS architecture and reusable design patterns.
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Write automated tests, perform code reviews, and maintain clean, secure, and maintainable code.
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Follow spec-driven development and use AI coding assistants responsibly while maintaining complete ownership of code quality, security, and correctness.
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Work with Docker, AWS, Git, and CI/CD pipelines to support reliable application delivery.
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Required Skills &amp; Qualifications
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8+ years of professional experience developing production-grade web applications.
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Strong hands-on experience with React, TypeScript, and JavaScript (ES6+).
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Strong knowledge of C# and .NET Core / ASP.NET Core.
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Experience developing REST APIs, asynchronous services, and dependency-injected applications.
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Strong hands-on experience with PostgreSQL, including joins, transactions, query optimization, and concurrent operations.
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Experience working with multi-tenant SaaS applications and sensitive data.
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Strong debugging and problem-solving skills across frontend, backend, and database layers.
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Experience with Git, CI/CD, Docker, and AWS/cloud infrastructure.
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Good understanding of HLD, LLD, data structures, design patterns, and system scalability.
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Ability to analyze and resolve production performance issues.
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Nice to Have
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Experience in healthcare, patient billing, insurance, or revenue cycle management.
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Experience with payment processors, webhooks, real-time updates, or message-based background workers.
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Exposure to AI-assisted development, LLM-based coding tools, and spec-driven engineering workflows.
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Experience designing systems for high availability, horizontal scaling, and large multi-tenant workloads.
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Ideal Candidate
We are looking for a hands-on engineer who can think across the complete technology stack, solve complex technical problems, make sound design decisions, and take ownership from requirements through production. Strong coding ability in React and C#, along with practical database and system-design knowledge, is essential.