Software Engineer

Modern Treasury; New York (NY); Hybrid; USD 120,000 - 240,000; Full time

Job summary

A leading financial technology firm is seeking a Full‑Stack Software Engineer to develop APIs and build features in a high-volume payment system. You will collaborate in a dynamic team environment, focusing on financial workflows and resilient processes. Preferred candidates will have experience with Ruby on Rails, React, and Postgres, as well as an interest in the payments space. This role offers a competitive salary range of $120,000 to $240,000, and the flexibility to work from various locations, including New York and remotely.

Qualifications

• 2+ years of professional software engineering experience.
• History of collaborating with a team to ship a major feature.
• Interested in full-stack development, including backend jobs, DBs, and frontend UX.

Responsibilities

• Build end-to-end features individually or in small teams.
• Iterate and ship code frequently.
• Participate in maintenance and ownership of a core component.

Skills

Full-stack development

Collaboration

Software engineering

Tools

Ruby on Rails

Postgres

React

Job description

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, TN, TX, UT, WA, WI).

We’re looking for Full‑Stack Software Engineers who want to help businesses of any size move money worldwide. You will contribute to APIs, banking infrastructure and financial workflows that ensure our customers can adopt and scale with Modern Treasury.

Whereas most SaaS companies move data, we move money. Our systems must scale to high volumes, with high accuracy and high reliability. Engineers at Modern Treasury design thoughtful design APIs, implement resilient processes, choose infrastructure that prioritizes fault tolerance and long‑term maintainability over chasing latest trends.

Our application is powered by Ruby on Rails, Postgres, Redis and ParadeDB. As of today, we are on the latest version of each technology. Github and typical CI/CD automation is used for deployments to AWS. While engineers have specialties, engineers can easily contribute to all layers and components of the application without friction.

Modern Treasury provides trusted infrastructure for money movement. The company helps teams launch and scale payment experiences in days, not months. With best‑in‑class developer tools and a single API for fiat and stablecoins—plus built‑in compliance, ledgering, and reporting—Modern Treasury enables businesses to move money instantly, reliably, and at scale.

What You’ll Do

• Build end‑to‑end features individually or in small teams.
• Iterate and ship code frequently.
• Participate in maintenance and ownership of a core component.
• Learn the payments space and shape projects before development.
• Be mentored and eventually become a mentor.

Minimum Requirements

• 2+ years of professional software engineering experience.
• Interested in full‑stack development, including backend jobs, DBs and frontend UX.
• A history of collaborating with a team to ship a major feature.

Preferred Requirements

• Experience with Ruby on Rails, React & Postgres.
• Experience with financial software for banks, credit card processing or cryptocurrencies.
• Ability to thrive in autonomous, engineer‑driven environment.

Compensation Range

$120,000.00/yr - $240,000.00/yr

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.