InternFlow

Greenhouse ·

full-time

Senior Full-stack Engineer

Mercury · San Francisco, CA, New York, NY, Portland, OR, or Remote within Canada or United States

Mercury is a fintech company focused on building specialized banking and financial software tailored for startups. As a senior full-stack engineer, you will join one of the company's product groups, such as Banking, Experiences, Expansion, or Risk, to develop and refine the platform's user-facing features. The role involves working in an autonomous, product-minded environment where you will collaborate closely with designers and product leaders to ship intuitive and efficient financial tools. Daily responsibilities include taking ownership of small to medium-sized projects, balancing technical tradeoffs, and leveraging AI tools to accelerate development and improve code quality. This position is well-suited for experienced developers with three to seven years of professional experience who are proficient in or eager to learn the company's core technology stack, which includes Haskell, React, TypeScript, and Redux. The ideal candidate is a pragmatic problem-solver who prioritizes user empathy and is motivated by the challenge of replacing legacy industry tools with modern, high-quality software solutions.

full-stack developmentfintechhaskellreacttypescriptproduct engineeringsenior developerstartup environment

Since the dawn of aviation, pilots have faced the constant challenge of air resistance, much like sailors navigating the friction of water. Amidst this relentless struggle, the trim tab emerges as an ingenious yet understated marvel. Just as the wheel revolutionized transportation by easing movement over land, the trim tab simplifies flight, allowing for smoother navigation through the skies. It embodies the elegance of simplicity in engineering, transforming the demanding task of controlling an aircraft into a more graceful and manageable endeavor. At Mercury, we are committed to crafting an exceptional banking* experience for startups. Our team is passionately focused on ensuring our product not only meets but anticipates the needs of our customers. Our product engineering group is growing and we’re looking to hire senior full-stack engineers . We’re a team of pragmatic, product-minded engineers motivated by the desire to create lovable products that rescue our customers from frustrating, expensive legacy industry tools. As part of this role, you will: Feel a strong sense of product ownership and actively seek responsibility – we often self-organize on small/medium projects, and we want someone excited to help shape and build Mercury’s future. Work in an autonomous environment on a close-knit team, with a “startup within a startup” feel. Partner closely with designers and product leaders to ship lovable experiences. We want to transcend the status quo for banking and fintech software, and many of our customers are startups and appreciate our slick, magical designs. Join a team of experienced product engineers within one of our Mercury product groups such as Banking, Experiences, Expansion, or Risk. The ideal candidate for the role: Has 3-7 years of full-stack development experience, with knowledge of or excitement to learn Haskell, React, TypeScript, and Redux. 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. Communicates and collaborates effectively with peers and cross-functional counterparts. If this role interests you, we invite you to explore our public demo at demo.mercury.com . *Mercury is a fintech company, not an FDIC-insured bank. Banking services 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. #LI-DNI Total Rewards The total rewards package at Mercury includes base salary, equity (stock options/RSUs), 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 USD Canadian employees (any location): $157,400 — $196,800 CAD

RoleSenior Full-stack Engineer
CompanyMercury
LocationSan Francisco, CA, New York, NY, Portland, OR, or Remote within Canada or United States
Typeinternship
CompensationNot disclosed
Posted2026-09-30
DeadlineRolling

Typical process for this type of role

A general guide — the exact steps for this specific listing may vary; check the original posting for details.

  1. 1ApplicationSubmit your resume through the apply link.
  2. 2ScreeningRecruiter reviews your background against the role.
  3. 3AssessmentA technical test, assignment, or coding round, depending on the role.
  4. 4Interview(s)One or more rounds with the hiring team.
  5. 5OfferOffer letter with compensation and start date.

Before you apply

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Senior Full-stack Engineer at Mercury: frequently asked questions

What is the salary for this role?
Mercury has not stated compensation in the listing. Check the original posting or ask during the application process.
Is the Senior Full-stack Engineer position remote, hybrid or onsite?
The listing marks this role as remote, with San Francisco, CA, New York, NY, Portland, OR, or Remote within Canada or United States as the location.
What is the application deadline?
Mercury has not listed a fixed deadline, so apply early in case the opening is filled.
How do I apply for the Senior Full-stack Engineer role?
Use the Apply button on this page. It opens the original listing on job-boards.greenhouse.io, where you submit your application with the company.

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