Home › Companies › Parafin › Senior Software Engineer, Merchant Decisioning
Senior Software Engineer, Merchant Decisioning
Parafin · San Francisco, CA · Hybrid · Active · $230,000–$265,000 / year · Ashby
Job facts
| Field | Value |
|---|---|
| Company | Parafin |
| Title | Senior Software Engineer, Merchant Decisioning |
| Normalized title | - |
| Department / team | Engineering / Engineering |
| Location | San Francisco, CA, United States |
| Work model | Hybrid / Hybrid |
| Employment type | Full Time |
| Salary | $230,000–$265,000 / year |
| Status | active |
| ATS provider | Ashby |
| Posted / first seen | — / 2026-05-29 |
| Changed / last seen | 2026-05-29 / 2026-06-06 |
Related slices
| Page | What it contains | Open |
|---|---|---|
| Company jobs | Active postings from Parafin. | Open |
| Company breakdowns | Role, location, ATS, and work model facets for this company. | Open |
| ATS provider jobs | Active postings observed through Ashby. | Open |
| Provider filtered search | The same provider as a filtered job collection. | Open |
| City jobs | Active postings in San Francisco. | Open |
| Department jobs | Active postings in Engineering. | Open |
| Work model jobs | Active Hybrid postings. | Open |
| Lifecycle events | Open, update, close, and reopen events for this posting. | Open |
| Original posting | Canonical source or apply URL captured from the ATS. | Open |
Linked records
| Company | Parafin |
| Source | 6bde73b9-3a52-4460-999f-86ada4ddcb69 |
| ATS provider | Ashby |
Description
About Us:
At Parafin, we’re on a mission to grow small businesses.
Small businesses are the backbone of our economy, but traditional banks often don’t have their backs. We build tech that makes it simple for small businesses to access the financial tools they need through the platforms they already sell on.
We partner with companies like DoorDash, Amazon, Worldpay, and Mindbody to offer fast and flexible funding, spend management, and savings tools to their small business users via a simple integration. Parafin takes on all the complexity of capital markets, underwriting, servicing, compliance, and customer service for our partners.
We’re a tight-knit team of innovators hailing from Stripe, Square, Plaid, Coinbase, Robinhood, CERN, and more — all united by a passion for building tools that help small businesses succeed. Parafin is backed by prominent venture capitalists including GIC, Notable Capital, Redpoint Ventures, Ribbit Capital, and Thrive Capital. Parafin is a Series C company, and we have raised more than $194M in equity and $340M in debt facilities.
Join us in creating a future where every small business has the financial tools they need.
We are looking for an experienced software engineer to join the merchant decisioning team and build a scalable platform/infrastructure that is critical for underwriting and decisioning hundreds of thousands of businesses on a daily basis. As part of the team, you will be working closely with Data Science, Growth and Risk stakeholders to efficiently serve the product initiatives that serve Parafin’s portfolio and empower stakeholders with controls to determine Parafin’s growth and bottom line.
Are you an excellent software engineer with a drive to solve impactful and difficult problems and eager to build the merchant decisioning platform for an ambitious and growing startup? If so, come join us!
What You’ll Be Doing:
You will own our Python-based underwriting and application decisioning product and drive its development.
You will closely define the architecture and underlying infrastructure all the way from the technologies we use to the design principles that we apply.
You will work closely with our data scientists to build a platform that is reliable, scalable, and easily iterable.
You will be integrating ML Infrastructure into the platform to make DS-driven decisioning more powerful and intelligent.
What We’re Searching For:
5+ years of experience working in an engineering role
You care deeply about building high-quality infrastructure with relevant experience and take immense pride in your craft.
You are comfortable owning and driving the development of the product from 0 to 1.
You thrive in ambiguity and have a strong grasp of engineering fundamentals.
You are excited about working on a small team and helping us set the foundations for the company.
What We Offer:
Salary Range: $230k-$265k
Equity grant
Medical, dental & vision insurance
Work from home flexibility
Unlimited PTO
Commuter benefits
Free lunches
Paid parental leave
401(k)
Employee assistance program
If you require reasonable accommodation in completing this application, interviewing, completing any pre-employment testing, or otherwise participating in the employee selection process, please contact us.
Full job record
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| Org ID | da88721d-a5c3-4458-a711-7a304058f7fa |
| Source ID | 6bde73b9-3a52-4460-999f-86ada4ddcb69 |
| Board ID | 6bde73b9-3a52-4460-999f-86ada4ddcb69 |
| Provider | ashby |
| Provider Job Key | ed17e3cc-aa2c-431e-bced-2ef574cec16f |
| Title | Senior Software Engineer, Merchant Decisioning |
| Normalized Title | — |
| Status | active |
| Active | yes |
| Location Text | San Francisco, CA |
| Department | Engineering |
| Team | Engineering |
| Employment Type | full_time |
| Workplace Type | hybrid |
| Remote Policy | hybrid |
| Country | United States |
| Region | CA |
| City | San Francisco |
| Salary Raw | Salary Range: $230k-$265k Equity grant Medical, dental & vision insurance Work from home flexibility Unli |
| Salary Min | 230,000 |
| Salary Max | 265,000 |
| Salary Currency | USD |
| Salary Period | year |
| Source URL | https://jobs.ashbyhq.com/parafin/ed17e3cc-aa2c-431e-bced-2ef574cec16f |
| Apply URL | https://jobs.ashbyhq.com/parafin/ed17e3cc-aa2c-431e-bced-2ef574cec16f/application |
| First Seen At | 2026-05-29 06:09:56Z |
| Last Seen At | 2026-06-06 09:07:47Z |
| Last Checked At | 2026-06-06 09:07:47Z |
| Last Changed At | 2026-05-29 06:09:56Z |
| Inactive At | — |
| Source Posted At | — |
| Source Updated At | — |
| Raw Payload Uri | s3://job-postings-prod-raw-590183727216/raw/provider=ashby/board=parafin/date=2026-06-06/2026-06-06T09-07-27-791Z-084dbb6258fc6e7ae2d2d6f3d8226a68863309194ead6326c72f74bcf79d1be9.json |
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