Principal Software Engineer, AMER — Open Banking Payments Lead

Trustly; San Francisco (CA); Hybrid; USD 210,000 - 320,000; Full time

Benefits offered by this job

Flexible PTO

Medical Insurance

Home office stipend

Parental leave

401k match

Job summary

Trustly is seeking an experienced Senior Principal Engineer to own cross-domain contracts among payments, bank connectivity, and risk, and to lead the US Platform squad from the San Francisco hybrid office. You will architect, implement, and operate critical pathways, with a focus on scalable, secure cross-system changes.

The role emphasizes setting technical direction, writing production code, and guiding multiple teams across regions while leveraging AI judiciously in regulated fintech

Qualifications

• 15+ years in software engineering.
• Designed, built and operated large-scale payment/banking/ledger systems.
• Proven ability to set technical direction through code and writing.
• Strong product judgment for platform trade-offs.
• Deep distributed systems expertise: consistency, idempotency, concurrency, failure handling.
• Practical, current use of AI in engineering with regulatory awareness.

Responsibilities

• Write and merge code on the critical path weekly: reference implementations, contract tests and fixes.
• Own the contracts between payments, bank connectivity and risk as versioned specs with contract tests in CI.
• Build the first version of hard cross-domain changes and hand them to the owning team.
• Own our global API specification and collaborate with merchant-facing API teams.
• Lead technical response to P0/P1 incidents across domains and participate in escalation rotation.
• Run peak-event readiness: load tests, failure drills and capacity planning.
• Lead the US Platform squad: set priorities and contracts across payments, connectivity and infra.

Skills

Distributed systems

Platform leadership

Code ownership

AI in engineering

Cross-team collaboration

Job description

Trustly is seeking an experienced Senior Principal Engineer to own cross-domain contracts among payments, bank connectivity, and risk, and to lead the US Platform squad from the San Francisco hybrid office. You will architect, implement, and operate critical pathways, with a focus on scalable, secure cross-system changes.

The role emphasizes setting technical direction, writing production code, and guiding multiple teams across regions while leveraging AI judiciously in regulated fintech