Platform Software Engineer



About Sandbox

Sandbox Banking is building a universal adapter for banks. Sandbox helps institutions quickly and securely integrate new software from vendors and fintech startups.

About the role

Skills: Django, Python, PostgreSQL, Amazon Web Services (AWS), JavaScript, CSS, HTML, TCP/IP

Sandbox Banking ( is looking for an exceptional software engineer who wants to reshape how innovative software is integrated in the financial services industry. We have rapidly growing revenue, are backed by Y Combinator (W17), and have raised seed capital. We are a remote team with employees across the continental US.

Sandbox is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.


Sandbox is a universal adapter for banks. It provides financial institutions (FIs) a better way to integrate fintech software with their existing systems.

US regional/community banks and credit unions are looking to overhaul the digital experiences they deliver to customers. Increasingly, they solve this challenge by sourcing software from fintechs — new companies that specialize in building and operating financial services software. Unfortunately, distributing new software to FIs has historically been a long and painful process because of data security and system integration hurdles.

Sandbox empowers FIs and vendors to quickly and safely build new integrations — our Glyue application lets anyone who can use Excel formulas connect banking systems. Furthermore, the platform's fine-grained authentication and permissions model provides FIs with strict control over which people/software can access particular banking data and operations.

FIs and fintechs love the platform. FIs are able to quickly and cost-effectively leverage cutting-edge solutions without compromising on integration; fintechs don't need to spend time and money on activities outside of core product development and distribution.

Why Work at Sandbox?

  • Small team — your impact will be meaningful
  • Teammates who are smart, curious, and driven to succeed. You will always be learning.
  • You'll be joining a rocketship company with rapid revenue growth, a significant client base (40+ banks and credit unions), prestigious investors (e.g. Y Combinator, SixThirty, Startupbootcamp), and great unit economics. There are a myriad of benefits to working for a company that wins.
  • Ownership of problems from start to finish
  • Significant customer interaction
  • Your ideas and opinions about the product will matter. Everyone in our company contributes to our product roadmap.
  • You'll use a variety of technologies across our entire software stack
  • Remote-first organization that provides geographic flexibility (although all employees must live in the US)
  • Salary and stock option compensation
  • Your work will transform an entire industry


Our engineer will need to handle a variety of tasks:

  • Build, maintain, and extend our Glyue integration platform
  • Provide feedback about Glyue so it can be improved for internal and external users
  • Construct unit and integration tests to help maintain our organization's high software delivery throughput
  • Use JIRA to track development tasks, convey customer project statuses, highlight blockers, and communicate with teammates
  • Write high quality documentation for both customer and internal use
  • Perform basic AWS-based and on premise sysadmin work
  • Identify and vocalize problems as they arise, especially in regards to data security
  • Help solve a multitude of early-stage startup tasks
  • Behave in a manner aligned with our high ethical standards


Successful applicants will need to possess certain specific skills and attributes:

  • Proficiency with Python.  Prior experience with the language is required, although our definition of experience is broad and would include undergraduate/graduate assignments, demonstrable project work, and coding bootcamps.  Our hiring process involves technical interviews for which knowledge of Python is necessary.
  • Proficiency with JavaScript coupled with web front-end development experience using a reactive framework (e.g. Vue.js, React.js) and HTML/CSS. We're looking for someone who can dive into our Vue front-end and be productive within a couple weeks. Our hiring process involves technical interviews for which knowledge of JavaScript is necessary.
  • Proficiency with both Windows and Linux
  • Understanding of basic software design patterns, unit testing, object-oriented language principles, functional language principles, and networking
  • Strong verbal and written communication skills in English
  • Strong deductive and inductive reasoning abilities
  • Ability to learn quickly from verbal and written information sources in a self-directed manner
  • Highly organized and capable of tracking current status, blockers, and next steps across multiple projects

There are additional requirements related to logistics and behavior:

  • Willingness to live and work in the US
  • Ability to work from our office in downtown Boston, MA for at least two weeks at start of employment.  Sandbox will cover travel expense for employee during this period.
  • Legal authorization to work for Sandbox Banking.  NOTE: We are unable to sponsor work visas at this time.
  • Willingness and ability to proactively collaborate with our customers and project managers.  To succeed, this individual will need to constantly discuss/record/broadcast business processes and requirements.  There are times when acquiring a single piece of critical information requires two or three conversations with different project stakeholders; this engineer must be unrelenting in such scenarios.
  • Fanatical passion for delivering the best possible experience to users
  • Willingness to re-prioritize work as product hypotheses and requirements change
  • Obsession with code quality, design patterns, documentation, testing, and other aspects of software engineering that empower teams to maintain high productivity over time
  • Team-first attitude coupled with an unrelenting desire to win

Experience in the following areas will be considered a bonus:

  • Financial services programming (especially for banks or vendors)
  • Early-stage startups
  • Software integration projects
  • Consulting
  • SaaS product development
  • Information security and regulatory compliance
  • JavaScript, C#, Java, Django, Postgres, HTML, CSS, front-end JS frameworks (e.g. React, Angular, Vue), and AWS

Next Steps

Please email resumes, CVs, and other relevant materials to [email protected] along with a brief description of why you’re interested in the role.


Our stack is comprised of Python, Django, Postgres, an assortment of AWS services, and a sprinkle of Vue.js.

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Onkar By: Onkar