I take products from a brief to production.
Senior software engineer in Ireland. 8+ years in .NET and TypeScript, mostly on finance products. I spec, design and build features end to end, without waiting for a PM.
- Two apps: the tenant web and the platform portal.
- Each one sits behind its own BFF.
- One API, run as a web process and a worker process.
- One PostgreSQL database, with a schema per module.
- Row Level Security on every tenant table. No account can bypass it.
Selected work
Own project. .NET 10, Next.js, PostgreSQL.
Multi-tenant SaaS Starter
A production-grade foundation for B2B SaaS, designed and built solo.
Read the case study
Accounting software for law firms. I own the project end to end.
Credit notes at a legal accounting product
Making credit notes a first-class document, split into eight pipelined slices.
Read the case study
Tech Lead over 30+ repositories.
Retiring my own AI review bot
Building a pre-review bot to learn, then retiring it when the platform caught up.
Read the case study
Also building: Aercura, AI for aviation maintenance, in development.
How I work
Write it down first
I turn a brief into one written document that settles every decision before code. The first one I wrote at Efimis got approved in a single meeting.
Design before building
I design the screens before I build, so the UI is agreed early.
Ship in small slices
I ship in small slices. QA tests one while I build the next.
Experience
Jun 2026 to present
Software Engineer, Efimis (ATI Global)
Accounting software for law firms. Own the credit notes project end to end.
Jan 2025 to Jun 2026
Tech Lead (Applications Manager), AerCap
Owned the claims platform that processes all outgoing payments. Modernised legacy apps to .NET Core and React with zero customer disruption; defect resolution time down 35%. Cut a 3-day maintenance cost integration to 2 hours (36x).
Jan 2023 to Jan 2025
Software Engineer, AerCap
Migrated 4 legacy apps to .NET Core and React; load times down 50%, defects down 40%. Oracle reporting time down 60%.
Mar 2020 to Sep 2021
Software Engineer, NTT Data
Istanbul.
Aug 2018 to Mar 2020
Software Engineer, Boraq Group
Istanbul.
Contact
Email is the fastest way to reach me. My resume has the full detail.
sufyantaskin@gmail.com