Senior Software Engineer - Stability

Mercury prides itself in providing powerful banking services. But if those services aren’t reliable, Mercury will fail. The Stability team exists to help product engineers see patterns of instability and remedy them. We champion and improve observability, have defined incident response, introduced and support robust background work processing, and monitor and build tooling around platform and database health. With your help, we will explore how to make Mercury even more reliable.

• Lead Projects End-to-End: Drive technical projects from concept to production. Define solutions, analyze tradeoffs, make critical decisions, and deliver software that works today and is sustainable for tomorrow.
• Champion Reliability: Make technical choices that improve the reliability of Mercury's systems and make it easier to get reliability by default. Participate in Stability's on-call and advocate for improvements based on that experience.
• Measure Your Outcomes: Define and collect metrics that show how your work creates value for the business.
• Approach Code with Craft: Write clear, testable, and maintainable code. Establish patterns and best practices that Engineering can follow, ensuring long‑term scalability and reliability.
• Build for Quality & Sustainability: Design extensible systems, make balanced decisions on tech debt, plan careful rollouts, and own the quality of your work through post‑launch monitoring.
• Improve the Developer
  
  Experience:
  
  Approach problems with a product mindset. Get close to internal customers by supporting them and getting feedback from them. You care as much about the business impact of what you build as the technical design.

• Has expertise in Postgre
  
  SQL with query optimization, tuning, replication, pooling/proxying, or client‑side libraries.
• Has worked with other data systems supporting a relational database: event streaming, OLAP, caches, etc.
• Has authored and operated Temporal workflows.
• Is familiar with tracing and Open Telemetry.
• Has learned by leading moderate‑to‑large technical projects, including planning, execution, and stakeholder management.
• Has past Site Reliability Engineering or Dev Ops experience.
• Has Haskell or other functional programming experience.

Our salary and equity ranges are highly competitive within the SaaS and fintech industry and are updated regularly using the most reliable compensation survey data for our industry. New hire offers are made based on a job candidate’s experience, expertise, geographic location, and internal pay equity relative to peers.

• US employees (any location): $166,
• Canadian employees (any location): CAD $157,

Mercury values diversity & belonging and is proud to be an Equal Employment Opportunity employer. All individuals seeking employment at Mercury are considered without regard to race, color, religion, national origin, age, sex, marital status, ancestry, physical or mental disability, veteran status, gender identity, sexual orientation, or any other legally protected characteristic. We are committed to providing reasonable accommodations throughout the recruitment process for applicants with disabilities or special needs.

If you need assistance, or an accommodation, please let your recruiter know once you are contacted about a role.