Senior Frontend Engineer, Mercury

Design Systems

$166.6-208.3k

Plus equity (stock options/RSUs). Canadian employees (any location): CAD 157,400 - 196,800

React

TypeScript

Mid and Senior level

New York

San Francisco Bay Area

Remote from Canada, US

Banking services for startups and small businesses

Open for applications

Banking services for startups and small businesses

1001+ employees

FintechB2BBankingFinancial Services

Open for applications

$166.6-208.3k

Plus equity (stock options/RSUs). Canadian employees (any location): CAD 157,400 - 196,800

React

TypeScript

Mid and Senior level

New York

San Francisco Bay Area

Remote from Canada, US

1001+ employees

FintechB2BBankingFinancial Services

Company mission

To make scaling tech companies simpler with a personalized banking stack for startups, and power the next generation of companies that will shape the American industry.

Job

Company

Role

Who you are

We are looking for someone who is fluent at that intersection: deeply versed in design systems, and equally as serious about what it takes to build a system that holds up at the leading edge of AI
We're looking for someone who cares about the foundational work that lets other people do their best work, and who's eager to help define what a design system means in a world where agents build alongside us
4+ years of frontend development, with deep experience in React, TypeScript, and modern web technologies
Experience building or maintaining a design system or shared component library
A thorough command of modern frontend tooling: build systems, CI/CD, and testing
High agency, and comfort creating clarity in ambiguous spaces. You take ownership and move without waiting for a defined path
First-principles systems thinking that stays oriented to outcomes. You make clear decisions that drive toward results instead of getting stuck in open questions
Strong product taste, and an instinct for leverage: the change that makes many teams better, not the one component polished in isolation
Hands-on fluency at the intersection of AI and software development: a real command of how emerging AI paradigms are changing the way software gets built, and the ability to turn that into practical leverage, both for the design system itself and for the people who build on it

What the job involves

As a Senior Frontend Engineer on the Design Systems team, you will build and care for those patterns: the components and foundations that everything else at Mercury is built on. Done well, a single decision here makes every product team faster
The ground under that work is shifting, though. Software is being built in new ways, and AI is increasingly part of how design systems are made and used
Build and maintain the components, patterns, and foundations (tokens, type, color, layout) that Mercury's product is woven from, holding a high bar for accessibility, performance, and pixel-level craft
Work hand-in-hand with design partners to bring new patterns from concept to production, tightening the loop between ideation and what actually ships
Lead projects that ship new UI patterns to solve real pain points for product teams, helping them build better experiences faster
Develop a design system that's as ready for AI as it is for people, applying the technology to create leveraged outcomes
Invest in the design system's prototyping experience, shaping the next iteration of how our design function rapidly prototypes, iterates on the product, and explores new concepts
Raise the craft and AI fluency of the people around you, through mentorship and clear best practices

Our take

Frustrated by the archaic, fee-laden banking services offered to entrepreneurs, the founders of Mercury set out to create a better solution. They envisioned a platform that was dynamic, tech-driven, and free from unnecessary fees.

Mercury delivers on this vision by automating business payment processes, offering FDIC-insured accounts, and providing full API access, empowering entrepreneurs with greater control and efficiency. This approach stands in stark contrast to traditional startup banking, which often burdens young businesses with high fees and limited functionality.

By prioritizing user experience and offering a free service tier, Mercury has attracted over 200,000 businesses and, off the back of a $300 million Series C round, achieved a $5.2B valuation as of 2026. As a rising unicorn in the stagnant world of startup banking, Mercury is poised for continued growth, constantly adding new features and expanding its team to further disrupt the industry.

Kirsty

Company Specialist at Welcome to the Jungle

Insights

Top investors

50% employee growth in 12 months

Glassdoor (4.4)

Trustpilot (3.9)

Company

Funding (last 2 of 6 rounds)

May 2026

$200m

SERIES D

Mar 2025

$300m

SERIES C

Total funding: $650.9m

Company benefits

Health, dental, & vision
12+ weeks of paid parental leave
$600 USD custom WFH equipment setup
Unlimited vacation policy (with a mandatory minimum)
Annual $1K learning & development budget
Paid 6-week sabbatical after the 5-year mark
Weekly $100 food budget
Monthly $100 wellness budget
Monthly $50 cellphone reimbursement
Pet-friendly offices with free tea and beverages, plus lunch and snacks
Unlimited vacation policy (with a mandatory minimum)
Retirement matching up to 4% of base salary (401K/RRSP)
Inclusive fertility, hormonal health, and family-forming benefits through Carrot Fertility

Company HQ

SoMa, San Francisco, CA

Leadership

Jason Zhang

(Co-Founder & COO)

Jason graduated from Stanford University with a Bachelor of Science in Biology before spending over 4 years at Heyzap in Business Development.

Immad Akhund

(Co-Founder & CEO)

Immad graduated from the University of Cambridge with a Masters in Computer Science. He then worked as a Software Developer at Aquila and Bloomberg. He also founded Clickpass and Heyzap, and was a Part-time Partner at Y Combinator.

Salary benchmarks

We don't have enough data yet to provide salary benchmarks for this role.

Submit your salary to help other candidates with crowdsourced salary estimates.

Share this job

View 43 more jobs at Mercury