Modern Treasury

Software Engineer - Infrastructure

San Francisco, CA
AWS API SQL React CSS PostgreSQL Ruby GraphQL Redis Docker


This position is based out of San Francisco.

We're looking for a software engineer focusing on core infrastructure to join the Modern Treasury Engineering team. In this role, you will be building the infrastructure to scale Modern Treasury's products and platform. Our payments product is the core of our platform that helps businesses move and track money, reconciling over $2.5B in volume per month. The ledgers product is a novel managed database product that helps customers maintain a source of truth for high-volume financial transactions and is already tracking hundreds of millions of dollars for customers.

Each of our products involve complex data architectures with critical reliability and stability requirements. We are hiring an infrastructure expert who can inform key architectural decisions during development. Specifically, this part of our team might be right for you if:

  • You have architected several layers of infrastructure — storage, networking, orchestration, deployment, data processing, observability and monitoring for high reliability and availability systems on bare-metal or cloud providers.

  • You have owned production and developer operations for engineering teams and instituted methods to increase productivity and efficiency of tools and systems.

  • You have built large-scale infrastructure for payments or related systems.

  • You are excited about supporting internal stakeholders and building tools that accelerate our product iteration and delivery.

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.

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.


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.


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:

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


  • Experience building web applications professionally for 3+ years

  • Experience working with SQL/Relational databases and other types of data storage systems

  • Experience with containerization and cloud-native deployments


  • Ruby on Rails for our backend framework

  • React, GraphQL, and Tailwind CSS on the frontend

  • 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.

Modern Treasury
Modern Treasury
Banking Finance FinTech Payments

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