Senior Software Engineer developing reliable, scalable, and secure payment flows integrated with core banking. Join Luminor to build a local banking champion in Estonia.
About the role
- Staff Software Engineer leading engineering culture while developing financial tracking systems for Sentry. Architecting software to process billions of events efficiently with high reliability and accuracy.
Responsibilities
- Architect and build the next generation of Sentry’s usage tracking pipeline, processing hundreds of billions of events daily with low latency and financial-grade accuracy.
- Design flexible pricing primitives that support everything from per-event usage billing to complex enterprise contracts, enabling product and sales teams to experiment rapidly while maintaining revenue accuracy and reduced time-to-market for new products.
- Lead technical decisions on data consistency challenges unique to billing—like handling event delays, retroactive pricing changes, and distributed count reconciliation across our infrastructure.
- Establish billing-specific engineering standards across Sentry—defining patterns for usage tracking, financial data modeling, and audit logging that other teams can adopt
Requirements
- Built or significantly improved systems that handle financial data or high-stakes accuracy requirements—billing systems, payment processing, accounting platforms, or financial data pipelines.
- Experience with data modeling — distilling complex business problems into elegant, maintainable schemas
- Mentored engineers through ambiguous, high-stakes projects where technical decisions have direct revenue implications.
- Operated services at Sentry’s scale (millions of events per second) where reliability includes uptime and also financial correctness.
Benefits
- A successful candidate will be eligible to participate in Sentry’s employee benefit plans/programs applicable to the candidate’s position (including incentive compensation, equity grants, paid time off, and group health insurance coverage).
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