Senior Software Developer

Quantiphi; Mumbai; On-site; INR 1,200,000 - 2,000,000; Full time

Job summary

Quantiphi in Mumbai is seeking a Senior Software Developer with 4–7 years of experience to design and build scalable .NET applications, APIs and services across Windows and Linux environments.

You will migrate legacy code, implement reliable, testable components, and mentor teammates while working with Docker, Kubernetes, CI/CD and modern tooling. Strong knowledge of REST/OpenAPI and EF Core/Dapper is required.

Qualifications

• Strong production experience with .NET Framework 4.x and modern .NET (>= .NET 8).
• Experience migrating .NET Framework to modern .NET, including System.Web/OWIN/WCF replacements.
• Experience with ASP.NET Core services, Windows/Linux hosting, and containers.
• Proficient in REST APIs, OpenAPI, and data access (EF Core/Dapper).
• Unit and integration testing with xUnit/NUnit; familiarity with TDD.

Responsibilities

• Design and implement services, adapters and agents with robust interfaces and tests.
• Migrate and refactor legacy components while preserving behavior.
• Build secure, observable, and resilient components for unattended operation at customer sites.
• Participate in code reviews, design discussions and release support; mentor peers.

Skills

C# & .NET

ASP.NET Core

Async programming

Unit testing (xUnit/NUnit)

OpenAPI

REST design

Migrations/EF Core/Dapper

Education

Bachelors in CS or related

Tools

Docker

Kubernetes

CI/CD pipelines

RabbitMQ

WiX/MSI installers

OpenAPI tooling

Job description

While technology is the heart of our business, a global and diverse culture is the heart of our success. We love our people and we take pride in catering them to a culture built on transparency, diversity, integrity, learning and growth.If working in an environment that encourages you to innovate and excel, not just in professional but personal life, interests you- you would enjoy your career with Quantiphi!Role: Senior Software DeveloperExperience: 4-7 yearsLocation: Mumbai/BangaloreMust-Have SkillsC# and .NET: Strong production experience with .NET Framework 4.x and modern .NET (.NET 8+), async programming, dependency injection, configuration.Services and hosting: ASP.NET Core, Worker Services, Windows services, and hosting the same code base on Windows and Linux/containers.Legacy modernization: Migrating .NET Framework projects to modern .NET, replacing System.Web/OWIN/WCF dependencies, multi-targeting, characterization tests.Windows platform knowledge: WMI, registry, event log, certificate store, service accounts, 32-bit/64-bit and native interop.APIs: REST design, versioning, authentication and authorization, OpenAPI.Data: PostgreSQL (Npgsql, EF Core/Dapper), migrations; exposure to SQL Server and SQLite.Reliability: Scheduling, retries, timeouts, cancellation, failure isolation, structured logging.Testing: Unit and integration tests (xUnit/NUnit), mocking, TDD practices.Good-to-Have SkillsMessaging (RabbitMQ), outbox and idempotent-delivery patterns.Docker, Kubernetes basics, CI/CD pipelines.Python for tooling and integrations; WiX/MSI installers.Industrial protocols such as OPC UA; exposure to OT/ICS environments.Key ResponsibilitiesDesign and implement services, adapters and agents with clear interfaces and strong test coverage.Migrate and refactor legacy components while preserving existing behavior.Build secure, observable and resilient components that run unattended at customer sites.Participate in code reviews, design discussions and release support; mentor peers.QualificationsBachelor's degree in Computer Science, Engineering, or a related field.If you like wild growth and working with happy, enthusiastic over-achievers, you'll enjoy your career with us!