Staff Engineer, API & Partner Integrations

About the Position

Staff Engineer, API & Partner Integrations

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About the Company

At Trustly, we're building a smarter, faster, and more secure financial future by revolutionizing the world of payments. As a global leader in Open Banking Payments, we are establishing Pay by Bank as the new standard at checkout, providing unparalleled freedom, speed, and ease to millions of consumers and merchants worldwide.

Our Ambition: To build the world’s most disruptive payment network and redefine what the payment experience should feel like.

Trustly is a global team of innovators, collaborators, and doers. If you are driven by a strong sense of purpose and thrive in a dynamic, entrepreneurial, and high-growth environment, join us and be part of a team that’s transforming the way the world pays.

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Responsibilities

• Own the architecture, service contracts, and production health of API and Partner Integrations.
• Own the operation of your services: on-call, SLAs, incident response, and root-cause fixes.
• Meet the observability standards set for every service, and make the service measurably better each quarter.
• Use AI tools to understand existing code quickly, then turn what you learn into design docs, interface definitions, and runbooks.
• Partner with the engineers who run these systems today, across the Americas and Europe, to transfer knowledge.
• Direct AI-assisted implementation: write and close implementation plans, review output against requirements, and own integration testing.
• Help hire and shape the team that will own this domain.

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Requirements

• Typically 10+ years building and operating production software systems, including several years owning systems at staff level or equivalent.
• Hands-on experience with payments, banking, or other financial systems where correctness, auditability, and uptime matter most.
• You have carried the pager for systems you built, and improved them because of it.
• A track record of taking over an unfamiliar, business-critical codebase and becoming its owner.
• Daily use of AI coding tools (such as Claude Code, Cursor, or Copilot), with clear views on where they help and where human review has to hold.
• Strong distributed systems design: data consistency, idempotency, concurrency.
• Clear writing. Your design docs and incident write-ups are the ones other people reuse.
• Production experience with Java or a comparable backend language.
• Experience building integrations with bank APIs, core banking, or online banking providers, or data aggregators, including consent and token management.

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Nice to Have

• Experience with ACH, RTP, FedNow, or open banking.
• Experience helping build a new engineering hub or leading a major platform transition.

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We Offer

• Flexible paid time off & generous PTO accrual plans
• Comprehensive medical, dental, vision, and other insurances
• FSA & HSA plans for medical and dependent care
• Home office set-up allowance
• Internet stipend
• Retirement plan match for 401k and RRSP
• Gender-neutral paid parental leave, and more!

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About the Location

This is a hybrid role based out of our San Francisco office. We look for team members to be in the office Tuesday through Thursday.

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Compensation

• Salary Range: $190K – $284K
• Offers Equity
• Offers Bonus

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Application

Applications for this role are accepted on an ongoing basis.

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Equal Opportunity Employer

At Trustly, we embrace and celebrate diversity of all forms and the value it brings to our employees and customers. We are proud and committed to being an Equal Opportunity Employer and believe an open and inclusive environment enables people to do their best work. All decisions regarding hiring, advancement, and any other aspects of employment are made solely on the basis of qualifications, merit, and business need.