{"id":3299643,"url":"https://alion.io/job/epam-systems-advanced-software-engineer-net","title":"Advanced Software Engineer - .NET","company":{"id":92,"name":"EPAM Systems","domain":"epam.com","url":"https://alion.io/company/epam-systems","size_band":"5000+","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"HeadHunter","truth_index":{"grade":"D","score":52,"open_postings":67,"ghost_share":0.776,"stale_share":0,"repost_share":0.09,"time_to_fill_p50_days":46,"computed_at":"2026-10-29T05:49:05Z"}},"role":"Backend","role_family":"Backend","seniority":"staff","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Pune, India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":28000,"max_usd":68000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":26},"experience_years_min":12,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C#","optional":false},{"name":"MS SQL","optional":false},{"name":"OWASP Top 10","optional":false},{"name":"Rest API","optional":false},{"name":"SOAP","optional":false},{"name":"Threat Modeling","optional":false}],"status":"live","first_seen_at":"2026-10-26T22:00:37Z","employer_posted_date":null,"last_verified_at":"2026-10-26T22:00:37Z","board_verified":false,"closed_at":null,"days_open":2,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":2},"description":"We are seeking a highly skilled Advanced Software Engineer with deep expertise in the .NET ecosystem to join our team.\n\nIn 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.\n\nResponsibilities\n\nDesign, develop, and maintain large monolithic systems, ensuring scalability and long-term evolution\nBuild and optimize high-load applications using the C# / .NET ecosystem\nDesign REST APIs with a focus on scalability, versioning, and security\nIntegrate with SOAP and legacy systems as needed\nPerform advanced MSSQL performance tuning, transaction optimization, and handle blocking, locking, and concurrency\nDrive performance optimization, concurrency management, and fault tolerance across services\nImplement secure communication using TLS/SSL and manage certificate handling\nApply secure coding practices and mitigate common vulnerabilities (OWASP Top 10)\nConduct threat modeling and define mitigation strategies for critical systems\nIdentify and prevent vulnerabilities such as injection attacks, authentication flaws, and data leaks\nLeverage AI development tools and agents to generate production-quality code and tests\nReview, evaluate, and govern AI-generated output to maintain high engineering standards\n\nRequirements\n\n12+ years of professional software engineering experience\nDeep expertise in the C# / .NET ecosystem\nProven background in designing and working with high-load systems\nStrong skills in REST API design (scalability, versioning, security) and SOAP / legacy integrations\nAdvanced proficiency in MSSQL, including performance tuning at scale, transaction optimization, and concurrency handling (blocking and locking)\nShowcase of designing and evolving large monolithic systems\nExpertise in performance optimization, concurrency, and fault tolerance\nDeep understanding of application security, including TLS/SSL, secure communication, and certificate handling\nFamiliarity with secure coding practices, OWASP Top 10, and threat modeling and mitigation strategies\nCapability to identify and prevent vulnerabilities such as injection, 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