Contract Senior .NET/C# Full-Stack Developer

Company Description

VentureRadar is a niche B2B SaaS business providing a highly custom-built technology platform for analysing, scoring, and reporting on innovative companies. Our stack has evolved over 13 years, combining deep domain knowledge with powerful technical infrastructure – including crawler systems, automated import processes, and multi-source data enrichment.

With our founding technical lead stepping away after a long tenure, we\’re looking to bring in a part-time senior developer who can take ownership of the platform, guide future technical strategy, and ensure system continuity.

Role Description

• Take over from the outgoing tech lead with full support and documentation during a transition period
• Manage hosting and infrastructure, including cost optimisation
• Act as lead developer, providing hands-on development, particularly for new features or refactors
• Contribute to product discussions and prioritisation
• Be the technical steward of a system with real IP value and active users
• Own the technical roadmap, ensuring scalability, maintainability, and alignment with business goals

The role is remote and on-going, with UK-based applicants preferred (outside IR35) for occasional meet-ups. Beginning in September/October 2025.

The role initially is for 2 days per month.

Qualifications

• 5+ years’ C#/.NET full-stack experience
• Strong Azure knowledge
• Familiarity with MongoDB, Elasticsearch, and SQL Server
• Comfortable navigating and modernising legacy systems
• Independent, structured, and proactive mindset
• Strategic thinking – able to balance product evolution with maintenance
• (Bonus) Experience with data-driven SaaS platforms
• (Bonus) Experience with crawlers or data enrichment pipelines

The Tech Stack

The platform comprises:

• C# (.NET) applications, including multiple websites
• Microsoft Azure
• Elasticsearch
• MongoDB
• SQL Server
• Custom-built infrastructure across crawling, data processing orchestration system and internal tools and dashboards

The system is stable and mature, but has plenty of opportunity for a technical lead to bring value.

Why Join?

• Become part of a small team running an impactful business with an established user base and proven revenue model
• Flexible, part-time commitment to fit around other roles or projects
• Take real ownership – technically and strategically

To Apply

Along with applying through LinkedIn please drop us a brief note to info@ventureradar.com with your experience, availability, and what interests you about this role. Please include your expected day rate in your application. If shortlisted, you’ll be given a small technical task to get a feel for the system and its structure.