Senior Software Engineer, Mercury

Growth Infrastructure

$200.7-250.9k

+ Equity. For Canadian employees (any location): $189,700 - $237,100

Haskell

Senior and Expert level

New York

San Francisco Bay Area

Remote from Canada, US

Banking services for startups and small businesses

Job no longer available

Banking services for startups and small businesses

1001+ employees

FintechB2BBankingFinancial Services

Job no longer available

$200.7-250.9k

+ Equity. For Canadian employees (any location): $189,700 - $237,100

Haskell

Senior and Expert 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

Has 6+ years of software development experience, with a knowledge of or excitement to learn Haskell
Is highly autonomous and thrives in a fast-moving environment, capable of making impactful product and technical decisions
Is passionate about APIs and understands how to design and maintain robust, developer-friendly interfaces that drive adoption and engagement
Has strong product thinking—you should be excited about working on growth-related challenges and be comfortable prioritizing impactful work that increases user acquisition
Has experience with system design and architecture, with a track record of making tradeoff decisions and measuring their impact over time
Has expertise in API security and understands best practices for protecting sensitive data
Enjoys cross-functional collaboration, working closely with stakeholders across product and sales to align API development with Mercury’s growth strategy
Is comfortable navigating ambiguity, iterating quickly, and focusing on the highest-leverage opportunities to scale Mercury’s distribution through API partnerships

What the job involves

As a member of the Growth Infrastructure team, you will be at the forefront of Mercury’s expansion, developing a public-facing API that drives adoption, increases activation, and scales Mercury’s reach
Grow Mercury’s Public API to enable seamless partner integration, making Mercury’s financial services more accessible across diverse ecosystems
Expand and refine our public endpoints to drive distribution and scale Mercury’s presence in partner products, accelerating new customer acquisition
Design and implement API security measures including authentication, authorization, and compliance to ensure safe and scalable integrations
Optimize performance and scalability to handle high-throughput traffic and provide a seamless experience for partners embedding Mercury
Develop and maintain versioning strategies to ensure stability and backward compatibility while quickly iterating on features
Unlock new partnership opportunities by refining tools and levers that remove friction in integrations, enhancing adoption, and driving growth

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 achieved a $3.5B valuation as of 2025. As a rising unicorn in the stagnant world of startup banking, mercury is backed by substantial funding and 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 (4.5)

Trustpilot (4.1)

Company

Funding (last 2 of 5 rounds)

Mar 2025

$300m

SERIES C

Jul 2021

$120m

SERIES B

Total funding: $450.9m

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.

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