Senior Dotnet Developer - Build Mission-Critical Systems, Not Tickets.

• Senior .NET Developer | Investment Management
• Daily Rate Contract: €650-€700
• Dublin (Hybrid: 3 days onsite, 2 remote)

Build Mission-Critical Systems, Not Tickets

In this role, you will tackle complex engineering problems inside a market-leading, global investment management firm.

Own the full lifecycle, from design through to production, across a broad portfolio of business-critical systems spanning trading, risk, research, payments and investment operations.

Skip the sprint treadmill and the ticket queue. Make real architectural decisions, choose the right tools and see the results running in production, where performance, reliability and data integrity decide whether a solution succeeds.

Why Join?

• Real technical ownership: Make the calls on architecture and approach. Define the solution rather than implement someone else’s spec.
• Hard problems, visible results: Untangle legacy complexity and ship modern systems that the business uses every day.
• Variety without the chaos: Move across trading, risk, research, payments and operations. Learn a new domain, stack and set of constraints with each project.
• Direct line to the people using the software: Skip the layers of process. Talk to the users, understand the need and build the right thing first time.
• Room to grow: Join a fast-growing technology function where engineering standards are still being shaped, with strong potential for an extended engagement.

What You’ll Own

• Design and build backend services, desktop/UI applications and system integrations
• Modernize legacy platforms into scalable, future-proof architecture
• Define technical standards and shape direction across multiple codebases
• Own delivery from first design discussion to production release

What Success Looks Like

• Create clean, resilient systems that hold up under real-world load
• Replace fragile legacy components with modern, maintainable solutions
• Establish best-in-class engineering practices across a growing technology function

What You’ll Bring

• Deep, hands-on expertise in C#, .NET and SQL, with Python where it adds value
• Proven experience building and integrating backend services and desktop/UI applications
• A track record of modernizing and extending legacy codebases

Engagement Terms

• Rate: €650-€700 per day
• Term: 6-month initial contract, with strong potential for extension
• Location: Dublin, hybrid (3 days onsite, 2 days remote)
• Environment: A growing technology function within a global investment management firm

Next Steps

Start a confidential conversation. Apply via the link or send a CV and contact number to john.conlon@archer.ie.