Mid-Level Full-Stack Software Engineer
InvestorFlow, London
- Pay
- Not listed by the employer
- Work type
- Hybrid
- Level
- Not stated
- Area
- Software engineering
- Posted
- Aug 25, 2026
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About the role
InvestorFlow is the only company of its kind to deliver industry specialized CRM, built on Salesforce, and digital portals to help alternative asset firms find opportunities, create and manage relationships, and turn relationship insights into action with increased productivity and transparency.
We are seeking a skilled and passionate Full-Stack Software Engineer with strong experience in C#/.NET Core and modern front-end technologies (React, JavaScript/TypeScript, HTML, CSS) to design, develop, and maintain robust APIs and user interfaces for our enterprise applications.
The ideal candidate will be passionate about clean code, scalable architecture, and collaborative development, working closely with engineering and Product teams to build high quality products.
Exposure to modern AI tools and services (such as GitHub Copilot or APIs from providers like Anthropic) is beneficial.
You Will: - Design, develop, and maintain RESTful APIs using .NET Core.
- Work with data from SQL (MS-SQL server) and NoSQL (MongoDb) databases and external APIs.
- Ensure secure coding practices are followed throughout the development lifecycle.
- Collaborate with cross-functional teams to integrate APIs with frontend and backend systems.
- Build and maintain responsive, accessible user interfaces using React, JavaScript/TypeScript, HTML, and CSS.
- Optimize API performance and ensure scalability.
- Write unit and integration tests to ensure code quality.
- Participate in code reviews and contribute to continuous improvement.
- Work with CI/CD pipelines and Infrastructure as Code (IaC) tools to automate deployments.
- Leverage modern developer tools (e.g., GitHub Copilot) to improve productivity where appropriate.
You Have: Required
- 3–5 years of experience in .NET Core and API development.
- Strong understanding of RESTful API design principles, software design patterns, and secure coding standards.
- Experience with Entity Framework, SQL Server, and version control systems (e.g., Git).
- Hands-on experience with front-end development using React, JavaScript/TypeScript, HTML, and CSS.
- Experience with modern front-end tooling and build systems (e.g., Vite, Webpack) and state management libraries.
- Experience with CI/CD tools (e.g., GitHub Actions), IaC (e.g., Terraform), and cloud platforms (Azure/AWS).
- Leverage modern AI tools (e.g. GitHub Copilot, Claude Code, etc.) to improve productivity where appropriate.
- Good problem-solving skills and understanding of scalable system design.
Nice to Have
- Basic awareness of AI/LLM concepts or experience consuming AI APIs (e.g. simple integrations).
- Familiarity with tools or platforms from providers like Anthropic.
- Experience in developing, building, and deploying financial services grade applications and platforms.
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Listed on InvestorFlow's Lever job board; checked 4 h ago. First seen by us 32 h ago. Being listed doesn't mean the team is actively interviewing. We found this board in a public directory and haven't yet confirmed it against the company's own careers page.