{"id":1418797,"url":"https://alion.io/job/clean-harbors-senior-software-engineer-sse-ii","title":"Senior Software Engineer - SSE II","company":{"id":1849239,"name":"Clean Harbors","domain":"cleanharbors.com","url":"https://alion.io/company/cleanharbors-com","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Oracle","truth_index":{"grade":"B","score":76,"open_postings":70,"ghost_share":0,"stale_share":0.957,"repost_share":0,"time_to_fill_p50_days":31,"computed_at":"2026-10-19T05:45:15Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Hyderabad, India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":14000,"max_usd":32000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":139},"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Angular","optional":false},{"name":"ASP.NET Core","optional":false},{"name":"C#","optional":false},{"name":"Copilot","optional":false},{"name":"Cursor","optional":false},{"name":"Git","optional":false},{"name":"GitHub","optional":false},{"name":"JavaScript","optional":false},{"name":"Scrum","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"xUnit","optional":false}],"status":"live","first_seen_at":"2026-08-12T15:08:07Z","employer_posted_date":"2026-08-12","last_verified_at":"2026-10-19T17:19:13Z","board_verified":true,"closed_at":null,"days_open":68,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":68},"description":"Clean Harbors Inc. (www.cleanharbors.com) is a NYSE listed US based $6.5 billion company. Clean Harbors was founded in 1980 near Boston by Mr. Alan S. McKim, Everywhere industry meets environment, Clean Harbors is on-site, providing premier environmental, energy and industrial services. Clean Harbors employs a dedicated workforce of 25,000 employees and has over 750 service locations across the U.S., Canada and Mexico. Beyond addressing the environmental needs of its more than 300,000 customers, the Company has been on the front lines of addressing some of the largest emergency response events in North America of the past several decades including the BP Oil Spill in the Gulf of Mexico, the anthrax attacks in New York, the 2015 avian flu outbreak that devastated the poultry industry, Hurricanes Katrina, Rita and Sandy, and the oil pipeline breaks that affected the Yellowstone and Kalamazoo rivers, along with other major chemical releases into the environment.\nJob Title: Senior Engineer - .NET Fullstack\nExperience: 8 - 12 Years\nLocation: Hyderabad (Work from Office)\nWorking hours: 12.00 PM to 9.00 PM IST\n Design, develop, and maintain high-performance .NET applications using Microsoft .NET, ASP.NET, .NET 10 Core, and related frameworks. \nBuild, enhance, and optimize RESTful APIs for large-scale, high-availability systems. \nWork with SQL databases to write basic queries, stored procedures, and views \nStrong Development Skills in creating web applications using Angular, TypeScript, HTML5,CSS3, Git and Responsive Design\nCollaborate in Agile/Scrum teams and contribute to sprint planning, estimation, and delivery. \nUtilize GitHub, GitHub Copilot, and other DevOps tools to improve development speed, maintainability, and code quality. \nImplement best practices in software design, including SOLID principles, secure coding, and performance optimization. \nWrite unit tests using unit, NUnit, or equivalent testing frameworks. \n Minimum 8+ years of proven experience as a Full Stack Developer or similar role.\nStrong expertise in:Microsoft .NET, ASP.NET MVC, .NET 10 Core \nC#, ADO.NET \nASP.NET Web API \nJavaScript, TypeScript, CSS \nAngular\n\n5+ years of hands-on experience building and maintaining RESTful APIs. \nSQL development knowledge (Beginner-Intermediate acceptable). \nFamiliarity with Git, GitHub, GitHub Copilot, or TFS for version control and code collaboration. \nSolid 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