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# Implementation Engineer

- **Company:** Plaid Inc.
- **Location:** London, UK
- **Experience:** Experienced
- **Salary:** £69,193.0 - £81,774.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Software Debugging, Online Banking, JSON, CURL, OAuth, Software Engineering, SQL Databases, Postman, Restful APIs, Webhooks, Api Management
- **Published:** October 16, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5930273704

## About the Role

* 4+ years in a customer-facing technical role, such as implementation, integration, solutions, or technical account management, ideally at an API platform.
 * Hands-on experience with REST APIs, OAuth, webhooks, JSON, and web and mobile SDKs.
 * Comfort working in Postman or curl and reading API documentation critically.
 * Experience with SQL or other data querying tools.
 * A track record of owning technical projects end to end, with real deadlines and direct relationships with customer engineers.
 * Clear written communication skills, including plans, handovers, and customer updates.
 * Comfort working independently in a small regional team alongside a globally distributed function.

Nice-to-Haves

 * Knowledge of open banking, including UK Open Banking, PSD2/PSD3, AIS/PIS, and VRP.
 * Domain depth in payments, identity verification, or credit and underwriting.
 * A formal technical background or prior software engineering experience.
 * Experience with mobile integrations.
 * Fluency in a second European language.

## Description

* Own a portfolio of customer integrations from signature to production launch, including plans, milestones, and exit criteria.
 * Run scheduled implementation support for standard integrations, as well as one-off debugging engagements for customers who need a targeted fix.
 * Lead technical onboarding for existing customers adopting a new Plaid product, use case, or market.
 * Debug integration issues hands-on with customer engineers across API, SDK, OAuth redirect, and webhook behaviour.
 * Validate sandbox implementations and run go-live readiness checks.
 * Use Plaid's own data to proactively diagnose integration and conversion problems.
 * Produce written handovers to Account Management and maintain the team's reusable implementation resources.
 * Escalate recurring integration failures to Product and Engineering as clear patterns, backed by evidence.