Software Engineer (Senior)

Modern Treasury
San Francisco, CA

OVERVIEW

This position can be based out of San Francisco, New York, or remote (we accept candidates from the following states: AZ, CA, CO, CT, FL, GA, HI, IL, MA, MI, MN, MT, NC, NJ, NV, NY, OH, OK, OR, PA, TX, UT, WA, WI ).

We're looking for Software Engineers to join our Engineering team. In this role, you will build innovative payments products that delight both engineering and finance teams. As an early member of the engineering team, you will help shape the engineering culture of a fast-growing startup.

The core platform at Modern Treasury sits between our customers and their banks. In the same way that Twilio abstracted away the complexity of working with communication networks, we have built an easy-to-use, common interface into the banking system. Our customers use our products to do things like move money to or from their users, automate back-office work, and record their transaction ledgers. The companies that can use Modern Treasury move over $750 trillion a year via bank payments, as compared to only $2 trillion per year on card payments.

Our API is often the most critical piece of infrastructure that our customers use. We place a premium on building robust, scalable systems that can sustain a high volume of API calls and exceed the reliability requirements to move money at scale. We complement this with well-thought out interfaces for our users and pride in writing quality API docs .

We believe in using the best tool for the job, rather than always using open source or building things ourselves. We actively embrace open source in parts of our system but aren't afraid to roll our own solution for things like writing and parsing bank files. We also contribute to open source (for example, ).

In addition to our API, we have had a web platform since day 1 that is used by accountants, controllers, and engineers. They use our platform to do things like manage payment workflows and monitor their business. As an engineer, you will work with our product team to build products and features for these users.

ABOUT MODERN TREASURY

Modern Treasury is the operating system for money movement. Our payment operations platform combines a suite of APIs and dashboards to help companies unlock new payments revenue, strengthen customer experiences, and drive efficiency through their business. Our end-to-end platform moves enterprises forward with faster payments, efficient workflows, full data visibility, and seamless bank integrations.

WEEK BY WEEK

During your first week you will:

  • Get to know our leadership, culture, and values

  • Onboard with the engineering team

  • Ship your first commit on day 1

  • Take on 1-2 small tickets to address bugs or make minor improvements

  • Read our favorite industry primers

During your first six weeks you will:

  • Ship your first major project

  • Write your first blog post. We love writing at Modern Treasury (and have been on the front page of Hacker News multiple times with posts like "What Happens When You ACH a Dead Person?" and "How to Build an Insurance Company")

  • Shadow a few customer and partner meetings every week

During your first six months you will:

  • Work with our product team to scope and ship products for both our engineering and finance users

  • Help grow our team by mentoring new engineers, writing internal tooling and documentation, and interviewing new hires

WHAT YOU SHOULD HAVE

  • 6+ years of professional software engineering experience

  • Experience working with SQL/Relational databases

  • Experience working with large-scale, high-availability systems

TECHNOLOGIES WE USE

  • Ruby on Rails for our backend framework

  • React, GraphQL, and Tailwind CSS on the front end

  • Postgres for our database

  • Redis for caching

  • AWS for infrastructure and hosting

  • Docker for containerization

  • GitHub for source code management

  • Buildkite for continuous integration

Modern Treasury is committed to equal employment opportunity and does not discriminate in any employment opportunities or practices based on an individual's race, color, creed, gender (including gender identity and gender expression), religion (all aspects of religious beliefs, observance or practice, including religious dress or grooming practices), marital status, registered domestic partner status, age, national origin or ancestry (including language use restrictions and possession of a driver’s license issued under California Vehicle Code section 12801.9), natural hair, physical or mental disability, political affiliation, medical condition (including cancer or a record or history of cancer, and genetic characteristics), sex (including pregnancy, childbirth, breastfeeding or related medical condition), genetic information, sexual orientation, military and veteran status or any other consideration made unlawful by federal, state, or local laws. It also prohibits unlawful discrimination based on the perception that anyone has any of those characteristics, or is associated with a person who has or is perceived as having any of those characteristics.

Modern Treasury participates in E-Verify and will provide the federal government with your Form I-9 information to confirm that you are authorized to work in the U.S.

Posted 2025-09-14

Recommended Jobs

Senior Developer

SAP
Palo Alto, CA

Requisition ID: 433742 Work Area: Software-Design and Development Expected Travel: 0% Career Status: Professional Employment Type: Regular Full Time Career Level: T3-1 Original Pos…

View Details
Posted 2025-09-09

Veterinary Technician Level 2-3 at Animal Hospital of Thousand Oaks

Animal Hospital of Thousand Oaks
Thousand Oaks, CA

Job Description Job Description Would you like to join a team where your skills and talent are appreciated? Look no further! We are a privately owned small animal general practice with two great …

View Details
Posted 2025-07-29

Attorney-Workers Compensation Associate

Goldberg Segalla LLP
Orange County, CA

THE POSITION Goldberg Segalla LLP, a national law firm with more than 20 offices in 10 states, has an immediate opportunity for associates to join our Workers’ Compensation group in our California…

View Details
Posted 2025-07-31

Human Resources Clerk ll

City of Livermore, CA
Livermore, CA

Human Resources Clerk ll Location Livermore, CA : Description CLICK HERE for a copy of the job announcement. DEFINITION Under general supervision, performs a variety of routine to difficult, conf…

View Details
Posted 2025-09-13

Room Service Coordinator (Full-Time) *free parking*

Hilton
Riverside, CA

Earn paid time off from day 1 Free parking and free meals Option to be paid daily Discounted hotel stays for team members and family and friends. Debt free education What will I be doin…

View Details
Posted 2025-09-10

Busser

Skillet'z Cafe
Fremont, CA

Description Skillet’z Cafe is looking for a hardworking and efficient Busser to support our dining room team. As a Busser, you will play a crucial role in creating a clean and comfortable environm…

View Details
Posted 2025-08-07

Line Cooks

Albano Dito Family Restaurant Group
Sonoma, CA

Job Description Job Description Come work where you love to eat! Mary's Pizza Shack on 423 N McDowell Blvd in Petaluma are hiring Line Cooks. Apply online at Marys Pizza Shack is a fami…

View Details
Posted 2025-07-30

Senior Manager of Research & Development

Sakata Seed America, Inc.
Woodland, CA

JOB SUMMARY: We are seeking a strategic and people-focused Senior Manager of Research and Development. This position will support the Director in managing the research department and leading operatio…

View Details
Posted 2025-09-10

Wealth Advisory Associate Director of Operations

Civic Minds
San Francisco, CA

Position- Wealth Advisory Associate Director of Operations Location- San Francisco, CA Mode- Hybrid (3:2) You must have RIA Operations experience to apply for this role. Key r…

View Details
Posted 2025-09-10

Temporary Support Associate

Coach
Torrance, CA

Coach is seeking a Temporary Support Associate in Torrance, CA, to assist with retail operations and asset protection. This role involves maintaining inventory, supporting sales associates, and ensuri…

View Details
Posted 2025-09-01