Advanced Software Engineer - .NET

EPAM Systems; India; On-site; INR 4,500,000 - 6,500,000; Full time

Job summary

EPAM Systems in India seeks a highly skilled Advanced Software Engineer with deep expertise in the .NET ecosystem to design, evolve, and optimize large-scale, high-load systems, ensuring top-tier performance, security, and reliability.

You will leverage modern AI development tools to boost productivity, craft secure REST APIs, and govern AI-generated outputs to maintain engineering standards.

Qualifications

• 12+ years of professional software engineering experience.
• Deep expertise in C# / .NET ecosystem and high-load systems.
• Proven track record designing large monolithic and scalable services.
• Strong REST API design including security and versioning; SOAP/legacy integrations.
• Advanced MSSQL performance tuning, concurrency handling and optimization.
• Secure coding practices, OWASP Top 10 awareness, threat modeling.
• Experience using AI development tools to generate production code and tests.
• Proficient English (Upper-Intermediate/B2+).

Responsibilities

• Design, develop, and maintain large monolithic systems for scalability.
• Build and optimize high-load apps using C# / .NET.
• Design REST APIs with scalability, versioning, and security; integrate with SOAP/legacy systems.
• Conduct MSSQL performance tuning, concurrency management, and optimization.
• Drive performance optimization and fault tolerance across services.
• Implement TLS/SSL secure communication and certificate handling.
• Apply secure coding practices and mitigate OWASP vulnerabilities.
• Conduct threat modeling and mitigation strategies for critical systems.
• Identify and prevent vulnerabilities like injections and data leaks.
• Leverage AI tools to generate production-quality code/tests and govern AI output.

Skills

12+ years of professional software eng

C# / .NET ecosystem

High-load systems design

REST API design

SOAP / legacy integration

MSSQL performance tuning

Secure coding practices

Threat modeling

AI development tools usage

English proficiency (B2+)

Tools

MSSQL

TLS/SSL

AI tooling

Job description

We are seeking a highly skilled Advanced Software Engineer with deep expertise in the .NET ecosystem to join our team. In this role, you will design, evolve, and optimize large-scale, high-load systems while ensuring top-tier performance, security, and reliability. You will also leverage modern AI development tools to enhance productivity and code quality.

Responsibilities

• Design, develop, and maintain large monolithic systems, ensuring scalability and long-term evolution.
• Build and optimize high-load applications using the C# / .NET ecosystem.
• Design REST APIs with a focus on scalability, versioning, and security.
• Integrate with SOAP and legacy systems as needed.
• Perform advanced MSSQL performance tuning, transaction optimization, and handle blocking, locking, and concurrency.
• Drive performance optimization, concurrency management, and fault tolerance across services.
• Implement secure communication using TLS/SSL and manage certificate handling.
• Apply secure coding practices and mitigate common vulnerabilities (OWASP Top 10).
• Conduct threat modeling and define mitigation strategies for critical systems.
• Identify and prevent vulnerabilities such as injection attacks, authentication flaws, and data leaks.
• Leverage AI development tools and agents to generate production-quality code and tests.
• Review, evaluate, and govern AI-generated output to maintain high engineering standards.

Requirements

• 12+ years of professional software engineering experience.
• Deep expertise in the C# / .NET ecosystem.
• Proven background in designing and working with high-load systems.
• Strong skills in REST API design (scalability, versioning, security) and SOAP / legacy integrations.
• Advanced proficiency in MSSQL, including performance tuning at scale, transaction optimization, and concurrency handling (blocking and locking).
• Showcase of designing and evolving large monolithic systems.
• Expertise in performance optimization, concurrency, and fault tolerance.
• Deep understanding of application security, including TLS/SSL, secure communication, and certificate handling.
• Familiarity with secure coding practices, OWASP Top 10, and threat modeling and mitigation strategies.
• Capability to identify and prevent vulnerabilities such as injection, authentication flaws, and data leaks.
• Strong experience using and evaluating AI development tools and agents for generating production-quality code, tests, and governing AI output.
• Proficiency in English at an Upper-Intermediate level (B2) or higher.