Stash

Backend Engineer III

Stash$140K — $160K *
Finance & Insurance
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • 3-5 years of backend software development experience.
  • Strong skills in Go or Rails, or expertise in another backend language with readiness to learn Go.
  • Experience in event-driven and asynchronous architectures.
  • Ability to make data-driven decisions and iterate quickly.
  • Familiarity with relational and distributed databases, particularly CockroachDB or PostgreSQL.
  • Experience in building scalable and fault-tolerant backend services.
  • Knowledge of testing best practices and debugging techniques.

Responsibilities

  • Design and maintain backend services for the Core Banking System, focusing on performance and reliability.
  • Architect and implement asynchronous workflows for efficient banking transaction processes.
  • Optimize and ensure scalability of the system as user demands grow.
  • Lead architectural design and rapid implementation of services with AI coding tools.
  • Collaborate with operations and infrastructure teams for seamless service delivery.
  • Deploy and monitor services in a cloud-based environment continuously.
  • Debug, test, and document code to uphold high software quality.

Benefits

  • Comprehensive total rewards package including health care benefits.
  • Complimentary subscription to Stash+ account.
  • Flexible work policy allowing a mix of remote work and in-office collaboration.
  • Flexible PTO policy for work-life balance.
  • Annual reimbursement for learning and development opportunities.
  • Stipends for home office equipment and internet costs.
  • Paid parental leave for all types of parents.
  • Enhanced health and wellness benefits through partnerships with various health services.
Full Job Description
As a key member of the Accounts Team, you will play a pivotal role in managing and enhancing our Core Banking System. Our system is built using Go, with a robust asynchronous architecture, and CockroachDB as the primary database. We are looking for engineers who are eager to tackle challenges in fintech, build scalable backend services, and contribute to the next generation of banking infrastructure.

This position operates on a hybrid schedule, requiring you to be on-site in our New York office at leastthree days per week to work with stakeholders andfoster team collaboration.

What you'll do:
  • Design, develop, and maintain backend services for our Core Banking System, ensuring performance, reliability, and scalability.
  • Architect and implement robust asynchronous workflows to process banking transactions efficiently.
  • Optimize and scale our system as we continue to grow, ensuring high availability and security.
  • Act as an "Agent Conductor" to architect, design, and rapidly implement services by leveraging AI coding assistants.
  • Collaborate with cross-functional teams, including operations and infrastructure teams, to deliver seamless experiences.
  • Continuously deploy and monitor services in a cloud-based environment.
  • Debug, test, and document code to ensure high-quality software development.

What we're looking for:
  • 3 - 5 years of professional experience in backend software development.
  • Strong proficiency in Go or Rails (or deep experience in another backend language with a willingness to learn Go).
  • Experience working with event-driven, asynchronous architectures.
  • Data-driven decision maker, willing to take risks, fail fast, and iterate at the speed of AI generation.
  • Proficiency in working with relational and distributed databases, preferably CockroachDB, PostgreSQL, or similar.
  • Hands-on experience building highly scalable, fault-tolerant backend services.
  • A strong understanding of testing best practices, debugging, and profiling.
  • Familiarity with cloud platforms (AWS).
  • Excellent problem-solving skills and a mindset for continuous improvement.

Gold Stars:
  • Knowledge of multi-region architectures.
  • Familiarity with CI/CD pipelines, Terraform, and Datadog.
  • Understanding of banking or fintech-related systems.

#LI-Hybrid

Helping You Invest in Yourself
  • Comprehensive total rewards package, comprising compensation (salary and equity) and health care benefits
  • Complimentary subscription to Stash+ account
  • Flexible work policy - We offer a flexible work environment that blends working from home with in-person collaboration at our NYC office to support productivity and team culture.
  • Flexible PTO
  • Annual learning and development reimbursement benefit
  • Work-from-home equipment stipends; home internet subsidy
  • Paid Parental Leave (offerings for birth giving and non-birth giving parents) Primary & Secondary
  • Enhanced health and wellness benefits through One Medical, Gympass, and Maven Health

Salary Range: $140,000 - $160,000

The base salary range represents the reasonably anticipated low and high end of the salary range for this position. Actual salaries will vary and will be based on various factors, such as the candidate's qualifications, skills, experience and competencies, as well as internal equity and alignment with market data for companies of our size and industry.

**No recruiters, please**

About Stash

Stash is a financial services company that provides a mobile app designed to help users save and invest money. The app offers a range of investment options, including stocks, bonds, and exchange-traded funds, and allows users to invest with as little as $5. Stash was founded in 2015 by Brandon Krieg and Ed Robinson, and is headquartered in New York, New York. The company has raised over $300 million in funding and has over 5 million users.
Learn more about Stash
Size
500 employees
Industry
Founded
2015

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