Forward Deployed Engineers Should Not Be Used as Glorified Consultants

A common mistake is hiring a Forward Deployed Engineer (FDE) to deliver a Statement of Work (SOW). Consultants are paid to satisfy the customer with a specific deliverable; FDEs are paid to make the product viable for a specific market. If your FDE spends 40 hours a week writing custom Python scripts that will never be merged into the main codebase, you do not have an FDE—you have a contractor with a fancy title.

The fundamental difference between a consultant and an FDE lies in the feedback loop. A consultant succeeds when a project milestone receives sign-off. By contrast, a Forward Deployed Engineer is judged by how much the core product evolves based on the friction encountered in the field. Treating an FDE as a consultant creates a “service layer” that shields the product team from the user’s actual pain. This produces a dangerous vacuum: the product team believes a feature works because the FDE is “making it work” through manual patches and custom scripts, while the actual product remains stagnant or broken for the end user.

In practice, the “pure” FDE role should focus on the gap between a general-purpose platform and a high-value use case. The FDE serves as a bridge, working alongside the customer to pinpoint exactly where the product fails to meet the requirements of a specific vertical. Their job is not to create a bespoke solution for one client. It is to identify the pattern within that client’s need and bring the requirement back to the product roadmap, turning the solution into a native feature for all users.

For example, at Citadel, the only metric that mattered was whether the software actually helped portfolio managers generate alpha. In that high-stakes environment, the difference between “customer satisfaction” and “product viability” was stark. If the FDE spent three weeks building a dashboard that looked great but did not move PnL, it was a failure, regardless of whether the customer “liked” the dashboard. A consultant would have been praised for delivering a visually appealing dashboard on time; an FDE is judged by whether the tool actually drove the primary business outcome—in this case, alpha generation.

To stop the “glorified consultant” trend, companies must change how they evaluate FDE performance. Instead of tracking billable hours or SOW completion percentages, they should track the number of product requirements documents (PRDs) influenced by FDE field data or the number of custom scripts successfully refactored into core product features.

If the FDE is merely a buffer that absorbs customer complaints and resolves them with one-off hacks, you are essentially paying a premium for a support engineer. To use the role fully, the FDE needs a direct line to the product managers and the authority to say, “This custom request is a distraction; however, the underlying problem is a product gap that we must solve for the entire market.” Only then does the role shift from delivering a project to ensuring the long-term viability of the product.