Software Developer (UK)

We are looking for a motivated Software Developer to help build and maintain the backend services, data infrastructure, and cloud platform behind Vinley - our AI-driven investment intelligence engine spanning 38,000 publicly listed companies, 9,000 ETFs, and millions of data points across 60 global markets.

This is a backend-focused role. You will work primarily with .NET (C#), SQL Server, Python, and Microsoft Azure. You do not need to be a frontend specialist, but you should be comfortable making minor adjustments to a React application when needed.

What You Will Do

• Build and maintain .NET APIs - Develop and extend ASP.NET Core Web APIs and Razor Pages applications (user management, admin tools, financial data services) using C# and Dapper ORM.
• Design and optimize SQL Server databases - Write and maintain stored procedures, manage database schema changes using SQL Server Database Projects (dacpac/sqlpackage), and optimize queries across large financial datasets.
• Maintain Python data pipelines and APIs - Support and extend Python-based Flask API endpoints and data processing pipelines using pandas, ensuring data flows reliably from external sources into the platform.
• Work with Azure cloud services - Deploy and manage applications on Azure App Service, Azure Static Web Apps, and Azure SQL Database. Work with Azure Managed Identity and Azure Entra ID for authentication.
• Implement authentication, authorization, and security - Work with OpenID Connect (OIDC), JWT tokens, Azure Entra ID, and Microsoft Graph API to manage secure authentication flows, product-based authorization, role-based access control (RBAC), and Azure Managed Identity. Maintain rate limiting, audit logging, and input validation across services.
• Manage CI/CD pipelines - Write and maintain Azure DevOps YAML pipelines for building, testing, and deploying services across development, test, and production environments.
• Integrate third-party services - Work with Stripe for subscription billing (webhooks, subscription lifecycle) and external financial data APIs.
• Support frontend changes - Make minor adjustments to the Vinley web application (React/Vite) in coordination with the frontend team when needed.
• Collaborate on AI integration - Help integrate AI-generated financial data and insights into platform APIs and user-facing features, working with external AI services and data feeds.

• 2-5 years of professional software development experience.
• C# / .NET - Experience building web APIs or web applications with ASP.NET Core.
• SQL Server - Solid experience writing stored procedures, designing schemas, and optimizing queries. Comfort working with large datasets.
• Python - Working knowledge of Python for data processing, scripting, or API development (Flask, pandas).
• Git + Azure DevOps - Familiarity with Git version control and Azure DevOps workflows (branching, pull requests, code review, YAML pipelines).
• Microsoft Azure - Experience with or willingness to learn Azure services (App Service, Azure SQL, Entra ID, DevOps).
• REST APIs - Understanding of RESTful API design and JSON-based communication.
• Security awareness - Understanding of authentication/authorization patterns, secure API design, and common web application security principles (OWASP Top 10).
• Communication - Clear verbal and written communication skills in English.

Nice To Have

• Experience with Dapper ORM or micro-ORM patterns.
• Familiarity with Azure Entra ID (Azure AD), OpenID Connect, or Microsoft Graph API.
• Experience with Stripe integration or subscription billing systems.
• Exposure to React, Vite, or modern frontend tooling.
• Familiarity with SQL Server Database Projects (SSDT/dacpac) and sqlpackage deployments.
• Interest in or background in financial markets or investment analysis.

NextGenValueInvesting Sàrl (LLC) is a fintech company headquartered in Luxembourg, fully incorporated since January 2025. Our flagship product, Vinley, launched in November 2023, is an AI-supported investment and valuation risk tool built for value investors worldwide. Vinley empowers investors with AI-driven financial insights, simplifying complex analyses to support informed investment decisions. The platform delivers brand-related intelligence, analyzes customer and employee sentiment, identifies undervalued stocks, and assesses company-specific financial risks. It also streamlines the review of lengthy financial reports, boosting the productivity of investors around the world. We are expanding our engineering team with the intention of opening a new R&D office in Edinburgh to complement our Luxembourg headquarters.