{"id":2352940,"url":"https://alion.io/job/constructor-tech-senior-software-engineer-c","title":"Senior Software Engineer (C#)","company":{"id":1984326,"name":"Constructor Tech","domain":"constructor.tech","url":"https://alion.io/company/constructor-tech","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Bulgaria"],"countries":["BG"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":45000,"max_usd":85000,"period":"year","method":"role_seniority_country_cell","sample_n":8},"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Azure","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"SQL","optional":false},{"name":"JavaScript","optional":true},{"name":"React.js","optional":true},{"name":"TypeScript","optional":true},{"name":"Vue.js","optional":true}],"status":"live","first_seen_at":"2025-09-25T12:47:59Z","employer_posted_date":"2026-09-17","last_verified_at":"2026-10-12T19:02:41Z","board_verified":true,"closed_at":null,"days_open":382,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":382},"description":"Our mission\nConstructor’s mission is to enable all educational organisations to provide high-quality digital education to 10x people with 10x efficiency. \nWith strong expertise in machine intelligence and data science, Constructor’s all-in-one platform for education and research addresses today’s pressing educational challenges: access inequality, tech clutter, and low engagement of students.\nPlease send your resume in English only.\nThe type of contract is a full-time legal agreement in Bulgaria, Serbia, and Turkey, not a B2B contract.\nDuties and Responsibilities:\nMost of your time will be devoted to coding and reviewing the code of your teammates. Unit tests are a must. \nYou will help DevOps prepare products for build and deployment, adding support for necessary product configuration options. \nDevelop integration solutions to join our platform with customers' data. \nDig into complex product issues reported by customers. \nBuild APIs in a serverless microservice architecture\nQualifications and Experience:\nBachelor’s degree or higher in computer science or related field \n6+ years' work experience in frontend or backend development \nStrong C#, good knowledge of .Net Core and SQL \nYour code must be readable, testable, and follow best practices like SOLID \nCustomer-centric ideas to shape and improve the product \nExperience with continuous delivery. \nHands-on experience with Azure stack \nNice to Have but not Obligatory: \nMicroservices, cloud-based, event-driven architecture experience \nBasic experience in JavaScript/TypeScript and one of the well-known client frameworks: React, VueJS \nMobile app development experience \nSome experience with AI/ML \nWhat We Offer\n Choice of work equipment (e.g., laptop, monitor, etc.)\n English classes (iTalki - $130 monthly)\n Flexible schedule (we usually work between 09:00/10:00 and 18:00/19:00)\n Newborn bonus (€500 per child)\n Patent remuneration\n Paid leave\n Remote work in locations without our offices\n Hybrid work in locations with offices (2 days in-office, 3 days remote)\nConstructor fosters equal opportunity for people of all backgrounds and identities. We are led by a gender-balanced board committed to building a diverse and inclusive organisation where everyone can become their best self. We do not discriminate based on age, disability, gender identity, sexual orientation, ethnicity, race, religion or belief, parental and family status, or other protected characteristics. We welcome applications from women, men and non-binary candidates of all ethnicities and socio-economic backgrounds. 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