Senior Software Engineer - Investments

In Renaissance Florence, wealthy merchants faced a dilemma: where could they safely store their gold without it sitting idle. The Medici family offered a radical alternative. Deposit your assets with them and your assets would be secure, earn consistent returns, and, crucially, be accessible when needed. It was one of the first smart options for wealth: safe, productive, and liquid. The spirit of innovation and financial ingenuity that defined Renaissance Florence finds a powerful echo in the modern startup world.

Mercury brings that same spirit to building an exceptional banking experience for all. Our Treasury team builds the answer founders are looking for what to do with their idle cash. We’ve created a financial platform that helps startups put their idle cash to work. It helps startups manage their cash with confidence, combining safety and yield in one elegant package. Think of it as institutional-grade cash management, reimagined for ambitious startups.

The Treasury team is a team of full-stack engineers that are building thoughtful products that manage billions in customer funds, all while helping Mercury scale. We operate with a high degree of quality and care because we understand today's startups, like their historical counterparts, require solutions that go beyond.

As part of this role, you will:

• Lead high-impact, cross-functional projects across Treasury engineering, operations, compliance, and risk teams to build stable and scalable systems and processes
• Play a significant role in defining the technical architecture and experience of the Treasury product
• Collaborate with product, design, and operations to ship thoughtful features for our customers and internal users
• Feel a strong sense of product ownership and actively seek responsibility – we want someone excited to help shape and build Mercury’s future
• Join a team of experienced and junior product engineers managing billions of dollars of customer assets

The ideal candidate for the role:

• Experienced with Haskell or another programming language with sufficiently similar static typing or functional paradigms
• Domain knowledge of broker‑dealer trading or custody systems that support both individual securities (equities, fixed income) as well as ETFs and mutual funds
• Has been the technical lead of complex projects with many stakeholders with a track record of success
• Made architectural decisions measuring the impact of those decisions over time. You should be able to clearly articulate your technical opinions and lay out tradeoffs
• Comfortable mentoring both junior and senior engineers
• 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.

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.

Our target new hire base salary ranges for this role are the following:

• US employees (any location): $166,600 - 263,450
• Canadian employees (any location): CAD $157,400 - 248,950

Mercury is a fintech company, not an FDIC‑insured bank. Banking services are provided through Choice Financial Group and Column N.A., 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.