{"id":1556779,"url":"https://alion.io/job/quartile-senior-backend-developer","title":"Senior Backend Developer","company":{"id":669323,"name":"Quartile","domain":"quartile.com","url":"https://alion.io/company/quartile-2","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Rippling","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"contractor","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":[],"countries":[],"hiring_countries":["BR"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":48000,"max_usd":105000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":17},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"ASP.NET Core","optional":false},{"name":"Azure","optional":false},{"name":"C#","optional":false},{"name":"Flask","optional":false},{"name":"Git","optional":false},{"name":"Python","optional":false},{"name":"SQL","optional":false}],"status":"live","first_seen_at":"2026-09-17T20:00:44Z","employer_posted_date":"2026-09-17","last_verified_at":"2026-10-06T00:04:24Z","board_verified":true,"closed_at":null,"days_open":18,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":18},"description":"WHO WE ARE:\nQuartile, the world's largest retail media optimization platform, is a trusted partner for multichannel e-commerce success. Through unmatched expertise and patented AI technology, we fuel growth for 5,300+ brands and sellers worldwide and manage an annual ad spend exceeding $2 billion. The award-winning platform covers major marketplaces and ad channels for optimal reach. The result is unprecedented granularity, smarter budgeting, and bespoke solutions for retailers.\nQuartile is proud to be an equal opportunity employer with employees stemming from a wide range of backgrounds and experiences. As a business, we value the enrichment that diversity brings to our organization and are committed to a culture that creates a sense of inclusion and belonging. We welcome new perspectives and affirm that all employment decisions are made without regard to race, color, ancestry, religion, national origin, age, familial or marital status, sex, sexual orientation, pregnancy, gender identity or expression, disability, genetic information, veteran status, or any other classification protected by federal, state, or local law.\nOVERVIEW:\nWe are looking for a Backend Developer to join our Interface Team!\nREQUIREMENTS:\nProven experience as a back-end developer, preferably with at least 5 years of experience\nProficiency in .NET (C#) and knowledge in Phyton\nExperience in web application development using relevant frameworks such as ASP.NET Core and/or Flask\nSolid knowledge of SQL Server and data modeling\nAbility to optimize SQL queries and database performance\nFamiliarity with system integration through RESTful APIs and microservices\nExperience with version control systems, such as Git\nTroubleshooting and debugging skills\nAbility to work both 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