BPO Collections Ltd
Full Stack Developer
Sept 2025 - Apr 2026 · Contract
Rebuilt the payment flow on Fiserv and led the platform's migration off legacy ASP.NET onto typed Next.js, with the estate trading throughout.
80% more mobile payments since launch
- 70% of that increase came through Apple Pay, across both single and continuous payments, on a Fiserv integration built end to end.
- Reduced a four-screen payment flow to one interaction with no loss of compliance coverage, worth roughly £500,000 a month more through the platform.
- Migrated off ASP.NET with a PCI-DSS estate of 97+ stored procedures live throughout. The platform never came down.
- Planned and ran the production cutover: three runbooks split by server to enforce ordering, and a backout procedure written before deployment rather than during it.
Next.js · TypeScript · ASP.NET · SQL Server · Fiserv