I'm Jaswinder. Based out of Barcelona, Spain.
Eight years building systems where the cost of a bug is somebody
losing money or trust β payment engines for UK/EU at Barclays, an
enterprise wallet from scratch at Zbyte, a multi-merchant onramp +
checkout shipped in a week at Pingpay, and a recurring-payment
engine that runs trust-minimised inside a TEE. Open systems, hard
problems, things that have to be right the first time.
Currently:
- ποΈ Lead Developer @ Pingpay β payment infra in TypeScript, Rust, WASM, and Phala TEE
- π§ Early contributor to
Ironclaw β a Rust,
privacy-first AI assistant framework - π€ Daily practitioner of the Ralph Wiggum
technique β long-running autonomous coding agents, spec-driven, test-gated - π οΈ Co-founder @ Harmonic Guild β a small open-source dev collective
On using AI for the actual work: I run cloud coding agents
(Claude Code, Devin, Replit Agent) as part of how I ship β
multi-agent PR-and-review loops, autonomous bash-loop agents
grinding on a spec until the tests pass, evals on the prompt the
same way you'd eval a model. The interesting part isn't the model,
it's the orchestration around it.
π¬ jaswinder@harmonicguild.io . π¦ @jassification . πΌ linkedin



