Software Engineer - Mercury Command

Like the ATM, Mercury is building technology that pushes forward financial interfaces for the long term. Command is Mercury's LLM-powered financial assistant, launched to all customers in June 2026. It lets users understand their finances and take action in plain language, from asking about cash flow to sending payments, issuing cards, and managing invoices. With the product now in customers' hands, the work is to evolve it, extend its capabilities, and find new ways to leverage LLMs to give Mercury customers a more powerful banking experience.

What You'll Do

• Ship new capabilities users love.
• Feel a strong sense of product ownership and actively seek responsibility – help design and ship new Command skills.
• Partner with product and compliance teams to define what "working correctly" means for each new capability, then build the tests that prove it.
• Join a small but mighty team of experienced product and AI engineers building the future of Mercury.
• Work in ambiguity within a scrappy startup environment as product priorities shift.

The Ideal Candidate

• Has 1-4 years of backend or full-stack development experience, with knowledge of or excitement to learn Haskell, React, TypeScript, and Redux.
• Experience building LLM-powered products.
• A builder who is passionately product-minded and has experience building and shipping new products.
• Empathizes with users and can channel their perspective to build lovable products.
• Can balance tradeoffs and find creative solutions to accomplish goals.
• Actively incorporates AI tools into their workflow and is excited about leveraging them to amplify their impact — whether that's accelerating development, improving code quality, or finding creative solutions to hard problems.

Total Rewards

The total rewards package at Mercury includes base salary, equity (stock options/RSUs), and benefits. New hire offers are made based on a candidate’s experience, expertise, geographic location, and internal pay equity relative to peers.