San Francisco, CA, New York, NY, Portland, OR, or Remote within Canada or United States Venetian merchants transformed commerce by creating a system where every transaction told a complete story. What seemed like simple ledger entries actually captured the flow of value through entire trading networks, turning chaotic financial records into reliable foundations for business decisions. Double-entry bookkeeping became the navigation system that enabled the Age of Exploration and global trade. At Mercury, we see the same opportunity in modern financial workflows that those Venetian merchants saw centuries ago: the chance to fundamentally reimagine how businesses understand their financial operations. Just as double-entry bookkeeping brought clarity to medieval commerce, we're building tools that make financial management more automated and delightful for today's ambitious startups. Our product engineering teams are expanding Mercury's platform to better serve the complex financial needs of growing businesses. We're enhancing our existing accounting integrations and capabilities, building robust API infrastructure that supports our financial platform. This role will focus on building and maintaining backend services that power Mercury's financial capabilities, serving both internal product teams and external partners who integrate with our platform. As part of this role, you will: Build and scale a Python API service that enables Mercury's financial platform capabilities Create and maintain comprehensive API documentation to enable frictionless integrations for internal teams and external partners Optimize data schemas and queries to support growing transaction volumes and client scale Develop intelligent data categorization pipelines for automated transaction tagging and enrichment Champion the API consumer experience by gathering feedback, defining integration standards and evolving our documentation and tooling accordingly Enable engineers from other Mercury teams to easily contribute to and work with the Python API service Establish and evangelize Python development best practices for testing, documentation and code quality The ideal candidate for the role has: 3-7 years of backend development experience with a track record of building scalable APIs Proficiency in Python and SQL, with experience designing and optimizing database schemas for high-volume applications Experience building and maintaining API documentation and developer-facing tools Domain knowledge of financial systems and workflows, or exceptional ability to quickly master complex business processes Made architectural decisions in the past and measured the impact of those decisions over time - can clearly articulate your technical opinions and lay out tradeoffs Experience working with AI/ML systems for data categorization or classification applications Has been the technical lead of complex projects with many stakeholders, with a proven track record of shipping reliable software Communicates and collaborates effectively with peers and cross-functional counterparts by being helpful and engaged If this role interests you, we invite you to explore our public demo at demo.mercury.com . The total rewards package at Mercury includes base salary, equity (stock options), and benefits. 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 candidate’s experience, expertise, geographic location, and internal pay equity relative to peers. Our target new hire base salary ranges for this role are the following: US employees (any location): $166,600 - $208,300 Canadian employees (any location): CAD 157,400 - 196,800 *Mercury is a financial technology company, not a bank. Banking services provided through Choice Financial Group, Column N.A, and Evolve Bank & Trust, Members FDIC. 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. We use Covey as part of our hiring and / or promotional process for jobs in NYC and certain features may qualify it as an AEDT. As part of the evaluation process we provide Covey with job requirements and candidate submitted applications. We began using Covey Scout for Inbound on January 22, 2024. Please see the independent bias audit report covering our use of Coveyhere . #LI-ME1 Create a Job Alert Interested in building your career at Mercury? 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