Senior Backend Engineer (.NET Core)

Sass Innovations; Nashik District, Pune District; Hybrid; INR 2,800,000 - 4,200,000; Full time

Job summary

Sass Innovations is seeking a Senior Backend Engineer (.NET Core) to design, build, and maintain scalable backend services and APIs. You will mentor engineers across levels and drive platform-level backend initiatives within EcoTools and Unify efforts.

The role requires hands-on leadership in REST API design, cloud-native development on Azure, and a strong foundation in microservices and distributed systems. Collaboration with frontend, DevOps, and platform teams is essential for success.

Qualifications

• Bachelor’s or Master’s in CS/Engineering or related field.
• 6–9 years of backend development with .NET Core/ASP.NET Core.
• Strong REST API, microservices, and distributed systems experience.
• Hands-on with Azure cloud services and modern security patterns.
• Experience in Agile environments and scalable backend design.

Responsibilities

• Design, develop, and maintain scalable backend services and APIs using .NET Core (8.0+).
• Build microservices-based backend APIs aligned with EcoTools platform architecture.
• Develop secure REST APIs used by micro frontend apps and services.
• Contribute to backend architecture decisions, API standards, auth and data access patterns.
• Integrate backend services with platform services like authentication and messaging.
• Meet non-functional requirements: performance, scalability, reliability, security.
• Mentor backend engineers through code reviews and design discussions.
• Collaborate with frontend, DevOps, and platform teams for seamless integration.
• Implement unit and integration tests to ensure code quality and reliability.
• Contribute to CI/CD pipelines, deployment automation, and observability improvements.
• Participate in ADRs and architectural governance reviews.
• Support production troubleshooting and system stability improvements.

Skills

.NET Core

ASP.NET Core

REST API design

Microservices

Distributed systems

CI/CD practices

Agile methodologies

Cloud-native development

Communication

Troubleshooting

Performance optimization

Ownership mindset

Education

Bachelor's or Master's in CS/Engineering

Tools

Azure

SQL Server

PostgreSQL

NoSQL

Event Hub

Service Bus

Dapr

Job description

Job Title: Senior Backend Engineer (.NET Core)Location: Pune/Nashik (Hybrid)Experience: 8+ yearsWe are looking for a Senior Backend Engineer (.NET Core) to join our team. This is a hands-on individual contributor role with additional responsibility to guide and mentor backend engineers across senior, mid, and junior levels. The ideal candidate should have strong experience in .NET Core (8.0+), microservices architecture, API design, and cloud-native development on Azure. The candidate will actively contribute to platform-level backend services, shared components, and integrations across EcoTools and Unify initiatives, while helping establish backend engineering best practices across the team.Kindly source relevant profiles as per the below points :

• We specifically need strong frontend developers who are also full stack, due to the majority of work being frontend.
• Full stack skill set with Strong Frontend skills and experience, preferably React.
• Recent hands-on experience
• Senior or strong intermediate moving to senior
• Engineering backgrounds with good aptitude

Key responsibilities:

• Design, develop, and maintain scalable backend services and APIs using .NET Core (8.0+).
• Build microservices-based backend APIs and tools aligned with EcoTools platform architecture.
• Develop secure and high-performance REST APIs used by micro frontend applications and other services.
• Contribute to backend architecture decisions, including service design, API standards, authentication, and data access patterns.
• Integrate backend services with platform services such as authentication, messaging, logging, and shared Unify components.
• Ensure backend solutions meet non-functional requirements (performance, scalability, reliability, and security).
• Guide and mentor backend engineers through code reviews, design discussions, and architectural best practices.
• Collaborate with frontend engineers, DevOps, and platform teams to ensure seamless system integration.
• Implement unit and integration tests to ensure high code quality and reliability.
• Contribute to CI/CD pipelines, deployment automation, and observability improvements.
• Participate in technical documentation, ADR discussions, and architectural governance reviews.
• Support engineering teams in troubleshooting production issues and improving system stability.

Essential requirements

• Bachelors or Master's degree in Computer Science, Engineering, or a related field.
• 6-9 years of hands-on backend development experience using .NET Core / ASP.NET Core.
• AI Skill Level: Has built or contributed to AI-powered features. Understands prompt, design, evaluation, guardrails, and failure modes.
• Have hands on in spec/skill driven agentic AI development.
• Strong expertise in REST API design, microservices architecture, and distributed systems.
• Experience working with Azure cloud services (App Services, Azure SQL, Event Hub, Service Bus, or similar).
• Solid understanding of authentication and authorization mechanisms (OAuth2, JWT, OpenID Connect).
• Experience with database technologies such as SQL Server, PostgreSQL, or NoSQL systems.
• Strong knowledge of clean architecture principles, SOLID design patterns, and scalable backend design.
• Experience working in Agile software development environments.
• Strong communication and collaboration skills.
• Strong problem-solving skills, debugging, and performance optimization skills, ownership mindset, and ability to collaborate across teams.
• Experience working in Agile software development methodologies.
• Ability to manage responsibilities independently and deliver results within deadlines.

Desired skills and competencies

• Experience with distributed application frameworks such as Dapr.
• Exposure to event-driven architectures and messaging systems.
• Familiarity with API Management, gateway patterns, and platform integrations.
• Experience working with large-scale SaaS platforms and micro services architectures.
• Exposure to AI-assisted development tools and modern engineering practices.