{"id":3752824,"url":"https://alion.io/job/blackthorn-vision-middle-full-stack-engineer-react-net","title":"Middle Full-Stack Engineer (React+.NET)","company":{"id":2397435,"name":"Blackthorn Vision","domain":"blackthorn-vision.com","url":"https://alion.io/company/blackthorn-vision","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":"middle","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Lviv, Ukraine"],"countries":["UA"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Azure","optional":false},{"name":"C#","optional":false},{"name":"Entity Framework Core","optional":false},{"name":"JavaScript","optional":false},{"name":"Microsoft Entra ID","optional":false},{"name":"React Hook Form","optional":false},{"name":"React Router","optional":false},{"name":"React.js","optional":false},{"name":"Redux Toolkit","optional":false},{"name":"Rest API","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"Zod","optional":false},{"name":"Agile","optional":true},{"name":"Docker","optional":true},{"name":"Kubernetes","optional":true},{"name":"RabbitMQ","optional":true},{"name":"Redux","optional":true}],"status":"live","first_seen_at":"2026-11-04T14:35:43Z","employer_posted_date":null,"last_verified_at":"2026-11-04T14:35:43Z","board_verified":false,"closed_at":null,"days_open":2,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":2},"description":"Blackthorn Vision is seeking a Middle Full-Stack Engineer (React + .NET). Our client, established in 2011 and based in Colorado, is a leading player in the U.S. application management market. We’ve had a successful partnership with this client and are seeking candidates who are eager to take ownership and improve a product already trusted by over 6,000 enterprises.\n\nRequirements:\n\n3+ years of commercial software development experience.\n\nStrong production experience with React, TypeScript, JavaScript, HTML, and CSS.\n\nStrong production experience with .NET / C#.\n\nExperience with Redux Toolkit / RTK Query, REST APIs, and complex application state.\n\nUnderstanding of data access technologies, including Entity Framework and MongoDB.\n\nExperience with both SQL and NoSQL databases.\n\nExperience with microservice-oriented architecture, parallel, and asynchronous programming design patterns.\n\nExperience with Azure technologies, including Azure Entra ID, Azure Storage Accounts, Azure Service Bus, and Azure Container Registry.\n\nKnowledge of design and architectural patterns.\n\nFamiliarity with React Router, React Hook Form, Zod, and frontend testing.\n\nUnderstanding of authentication, permissions, accessibility, and responsive UI.\n\nUpper-Intermediate English.\n\nNice To Have:\n\nExperience with Kubernetes, Docker, and RabbitMQ.\n\nResponsibilities:\n\nDevelop and maintain high-quality software solutions using React and .NET 10.0.\n\nTake full ownership of delivering new features to end users, including designing architecture, implementing, testing, and onboarding the customer support team with new functionality.\n\nBuild and maintain complex features across customer and admin portals.\n\nIntegrate APIs and deliver reliable, tested user experiences.\n\nImplement access controls, feature flags, and real-time UI updates.\n\nCollaborate with product owners, the support team, end users, product, design, backend, and QA teams to understand project requirements and deliver solutions.\n\nParticipate in code reviews to enhance overall code quality.\n\nEnsure applications are high-performing, responsive, and of excellent quality.\n\nTroubleshoot and resolve technical issues and defects promptly.\n\nCreate code documentation, technical specifications, and architecture diagrams for new features.\n\nFollow Agile methodologies and participate in regular sprint planning and review meetings.\n\nYou are compatible with us if you:\n\nHave a strong product mindset.\n\nHave a proactive approach to taking ownership of decisions/features.\n\nPossess a strong, curiosity-driven mindset.\n\nAre comfortable with challenges.\n\nHave the ability to collaborate and build relationships with diverse personalities.\n\nDemonstrate customer-focused decision-making.\n\nExhibit clear and timely communication.\n\nAre open to giving and receiving constructive feedback.\n\nValue the quality of your code.\n\nAre able to solve the required technical tasks and communicate throughout the process (for example, asking clarifying questions 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