{"id":136119,"url":"https://alion.io/job/investorflow-mid-level-full-stack-software-engineer","title":"Mid-Level Full-Stack Software Engineer","company":{"id":6517,"name":"InvestorFlow","domain":"investorflow.com","url":"https://alion.io/company/investorflow","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"A","score":95,"open_postings":5,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":91,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":"middle","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United 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development, working closely with engineering and Product teams to build high quality products.\nExposure to modern AI tools and services (such as GitHub Copilot or APIs from providers like Anthropic) is beneficial.\nYou Will:\nDesign, develop, and maintain RESTful APIs using .NET Core. \nWork with data from SQL (MS-SQL server) and NoSQL (MongoDb) databases and external APIs. \nEnsure secure coding practices are followed throughout the development lifecycle.\nCollaborate with cross-functional teams to integrate APIs with frontend and backend systems. \nBuild and maintain responsive, accessible user interfaces using React, JavaScript/TypeScript, HTML, and CSS. \nOptimize API performance and ensure scalability. \nWrite unit and integration tests to ensure code quality. \nParticipate in code reviews and contribute to continuous improvement. \nWork with CI/CD pipelines and Infrastructure as Code (IaC) tools to automate deployments. \nLeverage modern developer tools (e.g., GitHub Copilot) to improve productivity where appropriate.\nYou Have:\nRequired\n3-5 years of experience in .NET Core and API development. \nStrong understanding of RESTful API design principles, software design patterns, and secure coding standards. \nExperience with Entity Framework, SQL Server, and version control systems (e.g., Git). \nHands-on experience with front-end development using React, JavaScript/TypeScript, HTML, and CSS. \nExperience with modern front-end tooling and build systems (e.g., Vite, Webpack) and state management libraries. \nExperience with CI/CD tools (e.g., GitHub Actions), IaC (e.g., Terraform), and cloud platforms (Azure/AWS).\nLeverage modern AI tools (e.g. GitHub Copilot, Claude Code, etc.) to improve productivity where appropriate. \nGood problem-solving skills and understanding of scalable system design. \nNice to Have\nBasic awareness of AI/LLM concepts or experience consuming AI APIs (e.g. simple integrations). \nFamiliarity with tools or platforms from providers like Anthropic. \nExperience in developing, building, and deploying financial services grade applications and platforms. \nKnowledge of core Azure services (Azure Functions, Azure API Management, Azure Service Bus, Azure Monitor, Application Insights, Azure Front Door, Azure CDN). \nExperience with containerization and orchestration tools such as Docker and Kubernetes. \nKey Competencies\nStrong problem solving and analytical thinking \nClean coding and attention to detail \nCollaboration and communication skills \nOwnership mindset with focus on quality and delivery \nWillingness to learn new technologies (including AI where relevant)","description_format":"text","description_chars":2986,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United 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